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STM32: L0 LL layer 

Introduce the L0 LL Layer from STM32 cube.
pull/3629/head
Laurent MEUNIER 2017-01-23 18:01:30 +01:00
parent 04a31f3b39
commit 32d04ead8a
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targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_ll_adc.c Normal file
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/**
******************************************************************************
* @file stm32l0xx_ll_adc.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief ADC LL module driver
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_adc.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (ADC1)
/** @addtogroup ADC_LL ADC
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @addtogroup ADC_LL_Private_Constants
* @{
*/
/* Definitions of ADC hardware constraints delays */
/* Note: Only ADC IP HW delays are defined in ADC LL driver driver, */
/* not timeout values: */
/* Timeout values for ADC operations are dependent to device clock */
/* configuration (system clock versus ADC clock), */
/* and therefore must be defined in user application. */
/* Refer to @ref ADC_LL_EC_HW_DELAYS for description of ADC timeout */
/* values definition. */
/* Note: ADC timeout values are defined here in CPU cycles to be independent */
/* of device clock setting. */
/* In user application, ADC timeout values should be defined with */
/* temporal values, in function of device clock settings. */
/* Highest ratio CPU clock frequency vs ADC clock frequency: */
/* - ADC clock from synchronous clock with AHB prescaler 512, */
/* APB prescaler 16, ADC prescaler 4. */
/* - ADC clock from asynchronous clock (HSI) with prescaler 1, */
/* with highest ratio CPU clock frequency vs HSI clock frequency: */
/* CPU clock frequency max 32MHz, HSI frequency 16MHz: ratio 2. */
/* Unit: CPU cycles. */
#define ADC_CLOCK_RATIO_VS_CPU_HIGHEST ((uint32_t) 512U * 16U * 4U)
#define ADC_TIMEOUT_DISABLE_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 1U)
#define ADC_TIMEOUT_STOP_CONVERSION_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 1U)
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup ADC_LL_Private_Macros
* @{
*/
/* Check of parameters for configuration of ADC hierarchical scope: */
/* common to several ADC instances. */
#define IS_LL_ADC_COMMON_CLOCK(__CLOCK__) \
( ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV1) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV2) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV4) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV6) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV8) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV10) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV12) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV16) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV32) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV64) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV128) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV256) \
)
#define IS_LL_ADC_CLOCK_FREQ_MODE(__CLOCK_FREQ_MODE__) \
( ((__CLOCK_FREQ_MODE__) == LL_ADC_CLOCK_FREQ_MODE_HIGH) \
|| ((__CLOCK_FREQ_MODE__) == LL_ADC_CLOCK_FREQ_MODE_LOW) \
)
/* Check of parameters for configuration of ADC hierarchical scope: */
/* ADC instance. */
#define IS_LL_ADC_CLOCK(__CLOCK__) \
( ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV4) \
|| ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV2) \
|| ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV1) \
|| ((__CLOCK__) == LL_ADC_CLOCK_ASYNC) \
)
#define IS_LL_ADC_RESOLUTION(__RESOLUTION__) \
( ((__RESOLUTION__) == LL_ADC_RESOLUTION_12B) \
|| ((__RESOLUTION__) == LL_ADC_RESOLUTION_10B) \
|| ((__RESOLUTION__) == LL_ADC_RESOLUTION_8B) \
|| ((__RESOLUTION__) == LL_ADC_RESOLUTION_6B) \
)
#define IS_LL_ADC_DATA_ALIGN(__DATA_ALIGN__) \
( ((__DATA_ALIGN__) == LL_ADC_DATA_ALIGN_RIGHT) \
|| ((__DATA_ALIGN__) == LL_ADC_DATA_ALIGN_LEFT) \
)
#define IS_LL_ADC_LOW_POWER(__LOW_POWER__) \
( ((__LOW_POWER__) == LL_ADC_LP_MODE_NONE) \
|| ((__LOW_POWER__) == LL_ADC_LP_AUTOWAIT) \
|| ((__LOW_POWER__) == LL_ADC_LP_AUTOPOWEROFF) \
|| ((__LOW_POWER__) == LL_ADC_LP_AUTOWAIT_AUTOPOWEROFF) \
)
/* Check of parameters for configuration of ADC hierarchical scope: */
/* ADC group regular */
#define IS_LL_ADC_REG_TRIG_SOURCE(__REG_TRIG_SOURCE__) \
( ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_SOFTWARE) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM6_TRGO) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM21_CH2) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_TRGO) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_CH4) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM22_TRGO) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_CH3) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM3_TRGO) \
|| ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_EXTI_LINE11) \
)
#define IS_LL_ADC_REG_CONTINUOUS_MODE(__REG_CONTINUOUS_MODE__) \
( ((__REG_CONTINUOUS_MODE__) == LL_ADC_REG_CONV_SINGLE) \
|| ((__REG_CONTINUOUS_MODE__) == LL_ADC_REG_CONV_CONTINUOUS) \
)
#define IS_LL_ADC_REG_DMA_TRANSFER(__REG_DMA_TRANSFER__) \
( ((__REG_DMA_TRANSFER__) == LL_ADC_REG_DMA_TRANSFER_NONE) \
|| ((__REG_DMA_TRANSFER__) == LL_ADC_REG_DMA_TRANSFER_LIMITED) \
|| ((__REG_DMA_TRANSFER__) == LL_ADC_REG_DMA_TRANSFER_UNLIMITED) \
)
#define IS_LL_ADC_REG_OVR_DATA_BEHAVIOR(__REG_OVR_DATA_BEHAVIOR__) \
( ((__REG_OVR_DATA_BEHAVIOR__) == LL_ADC_REG_OVR_DATA_PRESERVED) \
|| ((__REG_OVR_DATA_BEHAVIOR__) == LL_ADC_REG_OVR_DATA_OVERWRITTEN) \
)
#define IS_LL_ADC_REG_SEQ_SCAN_DISCONT_MODE(__REG_SEQ_DISCONT_MODE__) \
( ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_DISABLE) \
|| ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_1RANK) \
)
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup ADC_LL_Exported_Functions
* @{
*/
/** @addtogroup ADC_LL_EF_Init
* @{
*/
/**
* @brief De-initialize registers of all ADC instances belonging to
* the same ADC common instance to their default reset values.
* @note This function is performing a hard reset, using high level
* clock source RCC ADC reset.
* @param ADCxy_COMMON ADC common instance
* (can be set directly from CMSIS definition or by using helper macro @ref __LL_ADC_COMMON_INSTANCE() )
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ADC common registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_ADC_CommonDeInit(ADC_Common_TypeDef *ADCxy_COMMON)
{
/* Check the parameters */
assert_param(IS_ADC_COMMON_INSTANCE(ADCxy_COMMON));
/* Force reset of ADC clock (core clock) */
LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_ADC1);
/* Release reset of ADC clock (core clock) */
LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_ADC1);
return SUCCESS;
}
/**
* @brief Initialize some features of ADC common parameters
* (all ADC instances belonging to the same ADC common instance)
* and multimode (for devices with several ADC instances available).
* @note The setting of ADC common parameters is conditioned to
* ADC instances state:
* All ADC instances belonging to the same ADC common instance
* must be disabled.
* @param ADCxy_COMMON ADC common instance
* (can be set directly from CMSIS definition or by using helper macro @ref __LL_ADC_COMMON_INSTANCE() )
* @param ADC_CommonInitStruct Pointer to a @ref LL_ADC_CommonInitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ADC common registers are initialized
* - ERROR: ADC common registers are not initialized
*/
ErrorStatus LL_ADC_CommonInit(ADC_Common_TypeDef *ADCxy_COMMON, LL_ADC_CommonInitTypeDef *ADC_CommonInitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_ADC_COMMON_INSTANCE(ADCxy_COMMON));
assert_param(IS_LL_ADC_COMMON_CLOCK(ADC_CommonInitStruct->CommonClock));
/* Note: Hardware constraint (refer to description of functions */
/* "LL_ADC_SetCommonXXX()": */
/* On this STM32 serie, setting of these features is conditioned to */
/* ADC state: */
/* All ADC instances of the ADC common group must be disabled. */
if(__LL_ADC_IS_ENABLED_ALL_COMMON_INSTANCE(ADCxy_COMMON) == 0U)
{
/* Configuration of ADC hierarchical scope: */
/* - common to several ADC */
/* (all ADC instances belonging to the same ADC common instance) */
/* - Set ADC clock (conversion clock) */
LL_ADC_SetCommonClock(ADCxy_COMMON, ADC_CommonInitStruct->CommonClock);
}
else
{
/* Initialization error: One or several ADC instances belonging to */
/* the same ADC common instance are not disabled. */
status = ERROR;
}
return status;
}
/**
* @brief Set each @ref LL_ADC_CommonInitTypeDef field to default value.
* @param ADC_CommonInitStruct Pointer to a @ref LL_ADC_CommonInitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_ADC_CommonStructInit(LL_ADC_CommonInitTypeDef *ADC_CommonInitStruct)
{
/* Set ADC_CommonInitStruct fields to default values */
/* Set fields of ADC common */
/* (all ADC instances belonging to the same ADC common instance) */
ADC_CommonInitStruct->CommonClock = LL_ADC_CLOCK_ASYNC_DIV2;
}
/**
* @brief De-initialize registers of the selected ADC instance
* to their default reset values.
* @note To reset all ADC instances quickly (perform a hard reset),
* use function @ref LL_ADC_CommonDeInit().
* @note If this functions returns error status, it means that ADC instance
* is in an unknown state.
* In this case, perform a hard reset using high level
* clock source RCC ADC reset.
* Refer to function @ref LL_ADC_CommonDeInit().
* @param ADCx ADC instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ADC registers are de-initialized
* - ERROR: ADC registers are not de-initialized
*/
ErrorStatus LL_ADC_DeInit(ADC_TypeDef *ADCx)
{
ErrorStatus status = SUCCESS;
__IO uint32_t timeout_cpu_cycles = 0U;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(ADCx));
/* Disable ADC instance if not already disabled. */
if(LL_ADC_IsEnabled(ADCx) == 1U)
{
/* Set ADC group regular trigger source to SW start to ensure to not */
/* have an external trigger event occurring during the conversion stop */
/* ADC disable process. */
LL_ADC_REG_SetTriggerSource(ADCx, LL_ADC_REG_TRIG_SOFTWARE);
/* Stop potential ADC conversion on going on ADC group regular. */
if(LL_ADC_REG_IsConversionOngoing(ADCx) != 0U)
{
if(LL_ADC_REG_IsStopConversionOngoing(ADCx) == 0U)
{
LL_ADC_REG_StopConversion(ADCx);
}
}
/* Wait for ADC conversions are effectively stopped */
timeout_cpu_cycles = ADC_TIMEOUT_STOP_CONVERSION_CPU_CYCLES;
while (LL_ADC_REG_IsStopConversionOngoing(ADCx) == 1U)
{
if(timeout_cpu_cycles-- == 0U)
{
/* Time-out error */
status = ERROR;
}
}
/* Disable the ADC instance */
LL_ADC_Disable(ADCx);
/* Wait for ADC instance is effectively disabled */
timeout_cpu_cycles = ADC_TIMEOUT_DISABLE_CPU_CYCLES;
while (LL_ADC_IsDisableOngoing(ADCx) == 1U)
{
if(timeout_cpu_cycles-- == 0U)
{
/* Time-out error */
status = ERROR;
}
}
}
/* Check whether ADC state is compliant with expected state */
if(READ_BIT(ADCx->CR,
( ADC_CR_ADSTP | ADC_CR_ADSTART
| ADC_CR_ADDIS | ADC_CR_ADEN )
)
== 0U)
{
/* ========== Reset ADC registers ========== */
/* Reset register IER */
CLEAR_BIT(ADCx->IER,
( LL_ADC_IT_ADRDY
| LL_ADC_IT_EOC
| LL_ADC_IT_EOS
| LL_ADC_IT_OVR
| LL_ADC_IT_EOSMP
| LL_ADC_IT_AWD1 )
);
/* Reset register ISR */
SET_BIT(ADCx->ISR,
( LL_ADC_FLAG_ADRDY
| LL_ADC_FLAG_EOC
| LL_ADC_FLAG_EOS
| LL_ADC_FLAG_OVR
| LL_ADC_FLAG_EOSMP
| LL_ADC_FLAG_AWD1 )
);
/* Reset register CR */
/* Bits ADC_CR_ADCAL, ADC_CR_ADSTP, ADC_CR_ADSTART are in access mode */
/* "read-set": no direct reset applicable. */
CLEAR_BIT(ADCx->CR, ADC_CR_ADVREGEN);
/* Reset register CFGR1 */
CLEAR_BIT(ADCx->CFGR1,
( ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL | ADC_CFGR1_DISCEN
| ADC_CFGR1_AUTOFF | ADC_CFGR1_WAIT | ADC_CFGR1_CONT | ADC_CFGR1_OVRMOD
| ADC_CFGR1_EXTEN | ADC_CFGR1_EXTSEL | ADC_CFGR1_ALIGN | ADC_CFGR1_RES
| ADC_CFGR1_SCANDIR | ADC_CFGR1_DMACFG | ADC_CFGR1_DMAEN )
);
/* Reset register CFGR2 */
/* Note: Update of ADC clock mode is conditioned to ADC state disabled: */
/* already done above. */
CLEAR_BIT(ADCx->CFGR2,
( ADC_CFGR2_CKMODE
| ADC_CFGR2_TOVS | ADC_CFGR2_OVSS | ADC_CFGR2_OVSR
| ADC_CFGR2_OVSE | ADC_CFGR2_CKMODE )
);
/* Reset register SMPR */
CLEAR_BIT(ADCx->SMPR, ADC_SMPR_SMP);
/* Reset register TR */
MODIFY_REG(ADCx->TR, ADC_TR_HT | ADC_TR_LT, ADC_TR_HT);
/* Reset register CHSELR */
#if defined(ADC_CCR_VLCDEN)
CLEAR_BIT(ADCx->CHSELR,
( ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17 | ADC_CHSELR_CHSEL16
| ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12
| ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8
| ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4
| ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0 )
);
#else
CLEAR_BIT(ADCx->CHSELR,
( ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17
| ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12
| ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8
| ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4
| ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0 )
);
#endif
/* Reset register DR */
/* bits in access mode read only, no direct reset applicable */
/* Reset register CALFACT */
CLEAR_BIT(ADCx->CALFACT, ADC_CALFACT_CALFACT);
}
else
{
/* ADC instance is in an unknown state */
/* Need to performing a hard reset of ADC instance, using high level */
/* clock source RCC ADC reset. */
/* Caution: On this STM32 serie, if several ADC instances are available */
/* on the selected device, RCC ADC reset will reset */
/* all ADC instances belonging to the common ADC instance. */
status = ERROR;
}
return status;
}
/**
* @brief Initialize some features of ADC instance.
* @note These parameters have an impact on ADC scope: ADC instance.
* Refer to corresponding unitary functions into
* @ref ADC_LL_EF_Configuration_ADC_Instance .
* @note The setting of these parameters by function @ref LL_ADC_Init()
* is conditioned to ADC state:
* ADC instance must be disabled.
* This condition is applied to all ADC features, for efficiency
* and compatibility over all STM32 families. However, the different
* features can be set under different ADC state conditions
* (setting possible with ADC enabled without conversion on going,
* ADC enabled with conversion on going, ...)
* Each feature can be updated afterwards with a unitary function
* and potentially with ADC in a different state than disabled,
* refer to description of each function for setting
* conditioned to ADC state.
* @note After using this function, some other features must be configured
* using LL unitary functions.
* The minimum configuration remaining to be done is:
* - Set ADC group regular sequencer:
* map channel on rank corresponding to channel number.
* Refer to function @ref LL_ADC_REG_SetSequencerChannels();
* - Set ADC channel sampling time
* Refer to function LL_ADC_SetChannelSamplingTime();
* @param ADCx ADC instance
* @param ADC_InitStruct Pointer to a @ref LL_ADC_REG_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ADC registers are initialized
* - ERROR: ADC registers are not initialized
*/
ErrorStatus LL_ADC_Init(ADC_TypeDef *ADCx, LL_ADC_InitTypeDef *ADC_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(ADCx));
assert_param(IS_LL_ADC_CLOCK(ADC_InitStruct->Clock));
assert_param(IS_LL_ADC_RESOLUTION(ADC_InitStruct->Resolution));
assert_param(IS_LL_ADC_DATA_ALIGN(ADC_InitStruct->DataAlignment));
assert_param(IS_LL_ADC_LOW_POWER(ADC_InitStruct->LowPowerMode));
/* Note: Hardware constraint (refer to description of this function): */
/* ADC instance must be disabled. */
if(LL_ADC_IsEnabled(ADCx) == 0U)
{
/* Configuration of ADC hierarchical scope: */
/* - ADC instance */
/* - Set ADC data resolution */
/* - Set ADC conversion data alignment */
/* - Set ADC low power mode */
MODIFY_REG(ADCx->CFGR1,
ADC_CFGR1_RES
| ADC_CFGR1_ALIGN
| ADC_CFGR1_WAIT
| ADC_CFGR1_AUTOFF
,
ADC_InitStruct->Resolution
| ADC_InitStruct->DataAlignment
| ADC_InitStruct->LowPowerMode
);
}
else
{
/* Initialization error: ADC instance is not disabled. */
status = ERROR;
}
return status;
}
/**
* @brief Set each @ref LL_ADC_InitTypeDef field to default value.
* @param ADC_InitStruct Pointer to a @ref LL_ADC_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_ADC_StructInit(LL_ADC_InitTypeDef *ADC_InitStruct)
{
/* Set ADC_InitStruct fields to default values */
/* Set fields of ADC instance */
ADC_InitStruct->Clock = LL_ADC_CLOCK_SYNC_PCLK_DIV2;
ADC_InitStruct->Resolution = LL_ADC_RESOLUTION_12B;
ADC_InitStruct->DataAlignment = LL_ADC_DATA_ALIGN_RIGHT;
ADC_InitStruct->LowPowerMode = LL_ADC_LP_MODE_NONE;
}
/**
* @brief Initialize some features of ADC group regular.
* @note These parameters have an impact on ADC scope: ADC group regular.
* Refer to corresponding unitary functions into
* @ref ADC_LL_EF_Configuration_ADC_Group_Regular
* (functions with prefix "REG").
* @note The setting of these parameters by function @ref LL_ADC_Init()
* is conditioned to ADC state:
* ADC instance must be disabled.
* This condition is applied to all ADC features, for efficiency
* and compatibility over all STM32 families. However, the different
* features can be set under different ADC state conditions
* (setting possible with ADC enabled without conversion on going,
* ADC enabled with conversion on going, ...)
* Each feature can be updated afterwards with a unitary function
* and potentially with ADC in a different state than disabled,
* refer to description of each function for setting
* conditioned to ADC state.
* @note After using this function, other features must be configured
* using LL unitary functions.
* The minimum configuration remaining to be done is:
* - Set ADC group regular sequencer:
* map channel on rank corresponding to channel number.
* Refer to function @ref LL_ADC_REG_SetSequencerChannels();
* - Set ADC channel sampling time
* Refer to function LL_ADC_SetChannelSamplingTime();
* @param ADCx ADC instance
* @param ADC_REG_InitStruct Pointer to a @ref LL_ADC_REG_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ADC registers are initialized
* - ERROR: ADC registers are not initialized
*/
ErrorStatus LL_ADC_REG_Init(ADC_TypeDef *ADCx, LL_ADC_REG_InitTypeDef *ADC_REG_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(ADCx));
assert_param(IS_LL_ADC_REG_TRIG_SOURCE(ADC_REG_InitStruct->TriggerSource));
assert_param(IS_LL_ADC_REG_SEQ_SCAN_DISCONT_MODE(ADC_REG_InitStruct->SequencerDiscont));
assert_param(IS_LL_ADC_REG_CONTINUOUS_MODE(ADC_REG_InitStruct->ContinuousMode));
assert_param(IS_LL_ADC_REG_DMA_TRANSFER(ADC_REG_InitStruct->DMATransfer));
assert_param(IS_LL_ADC_REG_OVR_DATA_BEHAVIOR(ADC_REG_InitStruct->Overrun));
/* Note: Hardware constraint (refer to description of this function): */
/* ADC instance must be disabled. */
if(LL_ADC_IsEnabled(ADCx) == 0U)
{
/* Configuration of ADC hierarchical scope: */
/* - ADC group regular */
/* - Set ADC group regular trigger source */
/* - Set ADC group regular sequencer discontinuous mode */
/* - Set ADC group regular continuous mode */
/* - Set ADC group regular conversion data transfer: no transfer or */
/* transfer by DMA, and DMA requests mode */
/* - Set ADC group regular overrun behavior */
/* Note: On this STM32 serie, ADC trigger edge is set to value 0x0 by */
/* setting of trigger source to SW start. */
MODIFY_REG(ADCx->CFGR1,
ADC_CFGR1_EXTSEL
| ADC_CFGR1_EXTEN
| ADC_CFGR1_DISCEN
| ADC_CFGR1_CONT
| ADC_CFGR1_DMAEN
| ADC_CFGR1_DMACFG
| ADC_CFGR1_OVRMOD
,
ADC_REG_InitStruct->TriggerSource
| ADC_REG_InitStruct->SequencerDiscont
| ADC_REG_InitStruct->ContinuousMode
| ADC_REG_InitStruct->DMATransfer
| ADC_REG_InitStruct->Overrun
);
}
else
{
/* Initialization error: ADC instance is not disabled. */
status = ERROR;
}
return status;
}
/**
* @brief Set each @ref LL_ADC_REG_InitTypeDef field to default value.
* @param ADC_REG_InitStruct Pointer to a @ref LL_ADC_REG_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_ADC_REG_StructInit(LL_ADC_REG_InitTypeDef *ADC_REG_InitStruct)
{
/* Set ADC_REG_InitStruct fields to default values */
/* Set fields of ADC group regular */
/* Note: On this STM32 serie, ADC trigger edge is set to value 0x0 by */
/* setting of trigger source to SW start. */
ADC_REG_InitStruct->TriggerSource = LL_ADC_REG_TRIG_SOFTWARE;
ADC_REG_InitStruct->SequencerDiscont = LL_ADC_REG_SEQ_DISCONT_DISABLE;
ADC_REG_InitStruct->ContinuousMode = LL_ADC_REG_CONV_SINGLE;
ADC_REG_InitStruct->DMATransfer = LL_ADC_REG_DMA_TRANSFER_NONE;
ADC_REG_InitStruct->Overrun = LL_ADC_REG_OVR_DATA_OVERWRITTEN;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* ADC1 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_comp.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief COMP LL module driver
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_comp.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (COMP1) || defined (COMP2)
/** @addtogroup COMP_LL COMP
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup COMP_LL_Private_Macros
* @{
*/
/* Check of parameters for configuration of COMP hierarchical scope: */
/* COMP instance. */
#define IS_LL_COMP_POWER_MODE(__POWER_MODE__) \
( ((__POWER_MODE__) == LL_COMP_POWERMODE_MEDIUMSPEED) \
|| ((__POWER_MODE__) == LL_COMP_POWERMODE_ULTRALOWPOWER) \
)
#if defined (STM32L011xx) || defined (STM32L021xx)
#define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \
(((__COMP_INSTANCE__) == COMP1) \
? ( \
(__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1 \
) \
: \
( \
((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO3) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO4) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO5) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO6) \
) \
)
#else
#define IS_LL_COMP_INPUT_PLUS(__COMP_INSTANCE__, __INPUT_PLUS__) \
(((__COMP_INSTANCE__) == COMP1) \
? ( \
(__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1 \
) \
: \
( \
((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO1) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO2) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO3) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO4) \
|| ((__INPUT_PLUS__) == LL_COMP_INPUT_PLUS_IO5) \
) \
)
#endif
/* Note: On this STM32 serie, comparator input minus parameters are */
/* the different depending on COMP instances. */
#define IS_LL_COMP_INPUT_MINUS(__COMP_INSTANCE__, __INPUT_MINUS__) \
(((__COMP_INSTANCE__) == COMP1) \
? ( \
((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) \
) \
: \
( \
((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_4VREFINT) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_1_2VREFINT) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_3_4VREFINT) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_VREFINT) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH1) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_DAC1_CH2) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO1) \
|| ((__INPUT_MINUS__) == LL_COMP_INPUT_MINUS_IO2) \
) \
)
#define IS_LL_COMP_OUTPUT_POLARITY(__POLARITY__) \
( ((__POLARITY__) == LL_COMP_OUTPUTPOL_NONINVERTED) \
|| ((__POLARITY__) == LL_COMP_OUTPUTPOL_INVERTED) \
)
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup COMP_LL_Exported_Functions
* @{
*/
/** @addtogroup COMP_LL_EF_Init
* @{
*/
/**
* @brief De-initialize registers of the selected COMP instance
* to their default reset values.
* @note If comparator is locked, de-initialization by software is
* not possible.
* The only way to unlock the comparator is a device hardware reset.
* @param COMPx COMP instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: COMP registers are de-initialized
* - ERROR: COMP registers are not de-initialized
*/
ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(COMPx));
/* Note: Hardware constraint (refer to description of this function): */
/* COMP instance must not be locked. */
if(LL_COMP_IsLocked(COMPx) == 0U)
{
if(COMPx == COMP1)
{
CLEAR_BIT(COMPx->CSR,
( COMP_CSR_COMP1EN
| COMP_CSR_COMP1INNSEL
| COMP_CSR_COMP1WM
| COMP_CSR_COMP1LPTIM1IN1
| COMP_CSR_COMP1POLARITY
| COMP_CSR_COMP1LOCK
)
);
}
else
{
CLEAR_BIT(COMPx->CSR,
( COMP_CSR_COMP2EN
| COMP_CSR_COMP2SPEED
| COMP_CSR_COMP2INNSEL
| COMP_CSR_COMP2INPSEL
| COMP_CSR_COMP2LPTIM1IN2
| COMP_CSR_COMP2LPTIM1IN1
| COMP_CSR_COMP2POLARITY
| COMP_CSR_COMP2LOCK
)
);
}
}
else
{
/* Comparator instance is locked: de-initialization by software is */
/* not possible. */
/* The only way to unlock the comparator is a device hardware reset. */
status = ERROR;
}
return status;
}
/**
* @brief Initialize some features of COMP instance.
* @note This function configures features of the selected COMP instance.
* Some features are also available at scope COMP common instance
* (common to several COMP instances).
* Refer to functions having argument "COMPxy_COMMON" as parameter.
* @param COMPx COMP instance
* @param COMP_InitStruct Pointer to a @ref LL_COMP_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: COMP registers are initialized
* - ERROR: COMP registers are not initialized
*/
ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(COMPx));
if(COMPx == COMP2)
{
assert_param(IS_LL_COMP_POWER_MODE(COMP_InitStruct->PowerMode));
assert_param(IS_LL_COMP_INPUT_PLUS(COMPx, COMP_InitStruct->InputPlus));
}
assert_param(IS_LL_COMP_INPUT_MINUS(COMPx, COMP_InitStruct->InputMinus));
assert_param(IS_LL_COMP_OUTPUT_POLARITY(COMP_InitStruct->OutputPolarity));
/* Note: Hardware constraint (refer to description of this function) */
/* COMP instance must not be locked. */
if(LL_COMP_IsLocked(COMPx) == 0U)
{
/* Configuration of comparator instance : */
/* - PowerMode */
/* - InputPlus */
/* - InputMinus */
/* - OutputPolarity */
/* Note: Connection switch is applicable only to COMP instance COMP1, */
/* therefore is COMP2 is selected the equivalent bit is */
/* kept unmodified. */
if(COMPx == COMP1)
{
MODIFY_REG(COMPx->CSR,
( COMP_CSR_COMP1INNSEL
| COMP_CSR_COMP1POLARITY
)
,
( COMP_InitStruct->InputMinus
| COMP_InitStruct->OutputPolarity
)
);
}
else
{
MODIFY_REG(COMPx->CSR,
( COMP_CSR_COMP2SPEED
| COMP_CSR_COMP2INPSEL
| COMP_CSR_COMP2INNSEL
| COMP_CSR_COMP2POLARITY
)
,
( COMP_InitStruct->PowerMode
| COMP_InitStruct->InputPlus
| COMP_InitStruct->InputMinus
| COMP_InitStruct->OutputPolarity
)
);
}
}
else
{
/* Initialization error: COMP instance is locked. */
status = ERROR;
}
return status;
}
/**
* @brief Set each @ref LL_COMP_InitTypeDef field to default value.
* @param COMP_InitStruct: pointer to a @ref LL_COMP_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_COMP_StructInit(LL_COMP_InitTypeDef *COMP_InitStruct)
{
/* Set COMP_InitStruct fields to default values */
COMP_InitStruct->PowerMode = LL_COMP_POWERMODE_MEDIUMSPEED;
COMP_InitStruct->InputPlus = LL_COMP_INPUT_PLUS_IO1;
COMP_InitStruct->InputMinus = LL_COMP_INPUT_MINUS_VREFINT;
COMP_InitStruct->OutputPolarity = LL_COMP_OUTPUTPOL_NONINVERTED;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* COMP1 || COMP2 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_comp.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of COMP LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_COMP_H
#define __STM32L0xx_LL_COMP_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (COMP1) || defined (COMP2)
/** @defgroup COMP_LL COMP
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup COMP_LL_Private_Constants COMP Private Constants
* @{
*/
/* COMP registers bits positions */
#define LL_COMP_OUTPUT_LEVEL_BITOFFSET_POS ((uint32_t)30U) /* Value equivalent to POSITION_VAL(COMP_CSR_COMP1VALUE) */
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup COMP_LL_ES_INIT COMP Exported Init structure
* @{
*/
/**
* @brief Structure definition of some features of COMP instance.
*/
typedef struct
{
uint32_t PowerMode; /*!< Set comparator operating mode to adjust power and speed.
This parameter can be a value of @ref COMP_LL_EC_POWERMODE
This feature can be modified afterwards using unitary function @ref LL_COMP_SetPowerMode(). */
uint32_t InputPlus; /*!< Set comparator input plus (non-inverting input).
This parameter can be a value of @ref COMP_LL_EC_INPUT_PLUS
This feature can be modified afterwards using unitary function @ref LL_COMP_SetInputPlus(). */
uint32_t InputMinus; /*!< Set comparator input minus (inverting input).
This parameter can be a value of @ref COMP_LL_EC_INPUT_MINUS
This feature can be modified afterwards using unitary function @ref LL_COMP_SetInputMinus(). */
uint32_t OutputPolarity; /*!< Set comparator output polarity.
This parameter can be a value of @ref COMP_LL_EC_OUTPUT_POLARITY
This feature can be modified afterwards using unitary function @ref LL_COMP_SetOutputPolarity(). */
} LL_COMP_InitTypeDef;
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/* Exported constants --------------------------------------------------------*/
/** @defgroup COMP_LL_Exported_Constants COMP Exported Constants
* @{
*/
/** @defgroup COMP_LL_EC_COMMON_WINDOWMODE Comparator common modes - Window mode
* @{
*/
#define LL_COMP_WINDOWMODE_DISABLE ((uint32_t)0x00000000U) /*!< Window mode disable: Comparators 1 and 2 are independent */
#define LL_COMP_WINDOWMODE_COMP1_INPUT_PLUS_COMMON (COMP_CSR_COMP1WM) /*!< Window mode enable: Comparators instances pair COMP1 and COMP2 have their input plus connected together. The common input is COMP1 input plus (COMP2 input plus is no more accessible). */
/**
* @}
*/
/** @defgroup COMP_LL_EC_POWERMODE Comparator modes - Power mode
* @{
*/
#define LL_COMP_POWERMODE_ULTRALOWPOWER ((uint32_t)0x00000000U) /*!< COMP power mode to low speed (specific to COMP instance: COMP2) */
#define LL_COMP_POWERMODE_MEDIUMSPEED (COMP_CSR_COMP2SPEED) /*!< COMP power mode to fast speed (specific to COMP instance: COMP2) */
/**
* @}
*/
/** @defgroup COMP_LL_EC_INPUT_PLUS Comparator inputs - Input plus (input non-inverting) selection
* @{
*/
#define LL_COMP_INPUT_PLUS_IO1 ((uint32_t)0x00000000U) /*!< Comparator input plus connected to IO1 (pin PA1 for COMP1, pin PA3 for COMP2) */
#define LL_COMP_INPUT_PLUS_IO2 (COMP_CSR_COMP2INPSEL_0) /*!< Comparator input plus connected to IO2 (pin PB4 for COMP2) (specific to COMP instance: COMP2) */
#define LL_COMP_INPUT_PLUS_IO3 (COMP_CSR_COMP2INPSEL_1) /*!< Comparator input plus connected to IO3 (pin PA5 for COMP2) (specific to COMP instance: COMP2) */
#define LL_COMP_INPUT_PLUS_IO4 (COMP_CSR_COMP2INPSEL_0 | COMP_CSR_COMP2INPSEL_1) /*!< Comparator input plus connected to IO4 (pin PB6 for COMP2) (specific to COMP instance: COMP2) */
#define LL_COMP_INPUT_PLUS_IO5 (COMP_CSR_COMP2INPSEL_2) /*!< Comparator input plus connected to IO5 (pin PB7 for COMP2) (specific to COMP instance: COMP2) */
#if defined (STM32L011xx) || defined (STM32L021xx)
#define LL_COMP_INPUT_PLUS_IO6 (COMP_CSR_COMP2INPSEL_2 | COMP_CSR_COMP2INPSEL_0) /*!< Comparator input plus connected to IO6 (pin PA7 for COMP2) (specific to COMP instance: COMP2) (Available only on devices STM32L0 category 1) */
#endif
/**
* @}
*/
/** @defgroup COMP_LL_EC_INPUT_MINUS Comparator inputs - Input minus (input inverting) selection
* @{
*/
#define LL_COMP_INPUT_MINUS_1_4VREFINT (COMP_CSR_COMP2INNSEL_2 ) /*!< Comparator input minus connected to 1/4 VrefInt (specifity of COMP2 related to path to enable via SYSCFG: refer to comment in function @ref LL_COMP_SetInputMinus() ) (specific to COMP instance: COMP2) */
#define LL_COMP_INPUT_MINUS_1_2VREFINT (COMP_CSR_COMP2INNSEL_2 | COMP_CSR_COMP2INNSEL_0) /*!< Comparator input minus connected to 1/2 VrefInt (specifity of COMP2 related to path to enable via SYSCFG: refer to comment in function @ref LL_COMP_SetInputMinus() ) (specific to COMP instance: COMP2) */
#define LL_COMP_INPUT_MINUS_3_4VREFINT (COMP_CSR_COMP2INNSEL_2 | COMP_CSR_COMP2INNSEL_1 ) /*!< Comparator input minus connected to 3/4 VrefInt (specifity of COMP2 related to path to enable via SYSCFG: refer to comment in function @ref LL_COMP_SetInputMinus() ) (specific to COMP instance: COMP2) */
#define LL_COMP_INPUT_MINUS_VREFINT ((uint32_t)0x00000000U) /*!< Comparator input minus connected to VrefInt (specifity of COMP2 related to path to enable via SYSCFG: refer to comment in function @ref LL_COMP_SetInputMinus() ) */
#define LL_COMP_INPUT_MINUS_DAC1_CH1 ( COMP_CSR_COMP2INNSEL_1 ) /*!< Comparator input minus connected to DAC1 channel 1 (DAC_OUT1) */
#define LL_COMP_INPUT_MINUS_DAC1_CH2 ( COMP_CSR_COMP2INNSEL_1 | COMP_CSR_COMP2INNSEL_0) /*!< Comparator input minus connected to DAC1 channel 2 (DAC_OUT2) */
#define LL_COMP_INPUT_MINUS_IO1 ( COMP_CSR_COMP2INNSEL_0) /*!< Comparator input minus connected to IO1 (pin PA0 for COMP1, pin PA2 for COMP2) */
#define LL_COMP_INPUT_MINUS_IO2 (COMP_CSR_COMP2INNSEL_2 | COMP_CSR_COMP2INNSEL_1 | COMP_CSR_COMP2INNSEL_0) /*!< Comparator input minus connected to IO2 (pin PB3 for COMP2) (specific to COMP instance: COMP2) */
/**
* @}
*/
/** @defgroup COMP_LL_EC_OUTPUT_SELECTION_LPTIM Comparator output - Output selection specific to LPTIM peripheral
* @{
*/
#define LL_COMP_OUTPUT_LPTIM1_IN1_COMP1 (COMP_CSR_COMP1LPTIM1IN1) /*!< COMP output connected to TIM2 input capture 4 */
#define LL_COMP_OUTPUT_LPTIM1_IN1_COMP2 (COMP_CSR_COMP2LPTIM1IN1) /*!< COMP output connected to TIM2 input capture 4 */
#define LL_COMP_OUTPUT_LPTIM1_IN2_COMP2 (COMP_CSR_COMP2LPTIM1IN2) /*!< COMP output connected to TIM2 input capture 4 */
/**
* @}
*/
/** @defgroup COMP_LL_EC_OUTPUT_POLARITY Comparator output - Output polarity
* @{
*/
#define LL_COMP_OUTPUTPOL_NONINVERTED ((uint32_t)0x00000000U) /*!< COMP output polarity is not inverted: comparator output is high when the plus (non-inverting) input is at a higher voltage than the minus (inverting) input */
#define LL_COMP_OUTPUTPOL_INVERTED (COMP_CSR_COMP1POLARITY) /*!< COMP output polarity is inverted: comparator output is low when the plus (non-inverting) input is at a lower voltage than the minus (inverting) input */
/**
* @}
*/
/** @defgroup COMP_LL_EC_OUTPUT_LEVEL Comparator output - Output level
* @{
*/
#define LL_COMP_OUTPUT_LEVEL_LOW ((uint32_t)0x00000000U) /*!< Comparator output level low (if the polarity is not inverted, otherwise to be complemented) */
#define LL_COMP_OUTPUT_LEVEL_HIGH ((uint32_t)0x00000001U) /*!< Comparator output level high (if the polarity is not inverted, otherwise to be complemented) */
/**
* @}
*/
/** @defgroup COMP_LL_EC_HW_DELAYS Definitions of COMP hardware constraints delays
* @note Only COMP IP HW delays are defined in COMP LL driver driver,
* not timeout values.
* For details on delays values, refer to descriptions in source code
* above each literal definition.
* @{
*/
/* Delay for comparator startup time. */
/* Note: Delay required to reach propagation delay specification. */
/* Literal set to maximum value (refer to device datasheet, */
/* parameter "tSTART"). */
/* Unit: us */
#define LL_COMP_DELAY_STARTUP_US ((uint32_t) 25U) /*!< Delay for COMP startup time */
/* Delay for comparator voltage scaler stabilization time */
/* (voltage from VrefInt, delay based on VrefInt startup time). */
/* Literal set to maximum value (refer to device datasheet, */
/* parameter "TVREFINT"). */
/* Unit: us */
#define LL_COMP_DELAY_VOLTAGE_SCALER_STAB_US ((uint32_t)3000U) /*!< Delay for COMP voltage scaler stabilization time */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup COMP_LL_Exported_Macros COMP Exported Macros
* @{
*/
/** @defgroup COMP_LL_EM_WRITE_READ Common write and read registers macro
* @{
*/
/**
* @brief Write a value in COMP register
* @param __INSTANCE__ comparator instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_COMP_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in COMP register
* @param __INSTANCE__ comparator instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_COMP_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/** @defgroup COMP_LL_EM_HELPER_MACRO COMP helper macro
* @{
*/
/**
* @brief Helper macro to select the COMP common instance
* to which is belonging the selected COMP instance.
* @note COMP common register instance can be used to
* set parameters common to several COMP instances.
* Refer to functions having argument "COMPxy_COMMON" as parameter.
* @param __COMPx__ COMP instance
* @retval COMP common instance or value "0" if there is no COMP common instance.
*/
#define __LL_COMP_COMMON_INSTANCE(__COMPx__) \
(COMP12_COMMON)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup COMP_LL_Exported_Functions COMP Exported Functions
* @{
*/
/** @defgroup COMP_LL_EF_Configuration_comparator_common Configuration of COMP hierarchical scope: common to several COMP instances
* @{
*/
/**
* @brief Set window mode of a pair of comparators instances
* (2 consecutive COMP instances odd and even COMP<x> and COMP<x+1>).
* @rmtoll COMP1_CSR COMP1WM LL_COMP_SetCommonWindowMode
* @param COMPxy_COMMON Comparator common instance
* (can be set directly from CMSIS definition or by using helper macro @ref __LL_COMP_COMMON_INSTANCE() )
* @param WindowMode This parameter can be one of the following values:
* @arg @ref LL_COMP_WINDOWMODE_DISABLE
* @arg @ref LL_COMP_WINDOWMODE_COMP1_INPUT_PLUS_COMMON
* @retval None
*/
__STATIC_INLINE void LL_COMP_SetCommonWindowMode(COMP_Common_TypeDef *COMPxy_COMMON, uint32_t WindowMode)
{
MODIFY_REG(COMPxy_COMMON->CSR, COMP_CSR_COMP1WM, WindowMode);
}
/**
* @brief Get window mode of a pair of comparators instances
* (2 consecutive COMP instances odd and even COMP<x> and COMP<x+1>).
* @rmtoll COMP1_CSR COMP1WM LL_COMP_GetCommonWindowMode
* @param COMPxy_COMMON Comparator common instance
* (can be set directly from CMSIS definition or by using helper macro @ref __LL_COMP_COMMON_INSTANCE() )
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_WINDOWMODE_DISABLE
* @arg @ref LL_COMP_WINDOWMODE_COMP1_INPUT_PLUS_COMMON
*/
__STATIC_INLINE uint32_t LL_COMP_GetCommonWindowMode(COMP_Common_TypeDef *COMPxy_COMMON)
{
return (uint32_t)(READ_BIT(COMPxy_COMMON->CSR, COMP_CSR_COMP1WM));
}
/**
* @}
*/
/** @defgroup COMP_LL_EF_Configuration_comparator_modes Configuration of comparator modes
* @{
*/
/**
* @brief Set comparator instance operating mode to adjust power and speed.
* @rmtoll COMP2_CSR COMP2SPEED LL_COMP_SetPowerMode
* @param COMPx Comparator instance
* @param PowerMode This parameter can be one of the following values:
* @arg @ref LL_COMP_POWERMODE_MEDIUMSPEED (1)
* @arg @ref LL_COMP_POWERMODE_ULTRALOWPOWER (1)
*
* (1) Available only on COMP instance: COMP2.
* @retval None
*/
__STATIC_INLINE void LL_COMP_SetPowerMode(COMP_TypeDef *COMPx, uint32_t PowerMode)
{
MODIFY_REG(COMPx->CSR, COMP_CSR_COMP2SPEED, PowerMode);
}
/**
* @brief Get comparator instance operating mode to adjust power and speed.
* @note Available only on COMP instance: COMP2.
* @rmtoll COMP2_CSR COMP2SPEED LL_COMP_GetPowerMode\n
* @param COMPx Comparator instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_POWERMODE_MEDIUMSPEED (1)
* @arg @ref LL_COMP_POWERMODE_ULTRALOWPOWER (1)
*
* (1) Available only on COMP instance: COMP2.
*/
__STATIC_INLINE uint32_t LL_COMP_GetPowerMode(COMP_TypeDef *COMPx)
{
return (uint32_t)(READ_BIT(COMPx->CSR, COMP_CSR_COMP2SPEED));
}
/**
* @}
*/
/** @defgroup COMP_LL_EF_Configuration_comparator_inputs Configuration of comparator inputs
* @{
*/
/**
* @brief Set comparator inputs minus (inverting) and plus (non-inverting).
* @note This function shall only be used for COMP2.
* For setting COMP1 input it is recommended to use LL_COMP_SetInputMinus()
* Plus (non-inverting) input is not configurable on COMP1.
* Using this function for COMP1 will corrupt COMP1WM register
* @note On this STM32 serie, specificity if using COMP instance COMP2
* with COMP input based on VrefInt (VrefInt or subdivision
* of VrefInt): scaler bridge is based on VrefInt and requires
* to enable path from VrefInt (refer to literal
* SYSCFG_CFGR3_ENBUFLP_VREFINT_COMP).
* @rmtoll COMP2_CSR COMP2INNSEL LL_COMP_ConfigInputs\n
* COMP2_CSR COMP2INPSEL LL_COMP_ConfigInputs
* @param COMPx Comparator instance
* @param InputMinus This parameter can be one of the following values:
* @arg @ref LL_COMP_INPUT_MINUS_VREFINT
* @arg @ref LL_COMP_INPUT_MINUS_IO1
* @arg @ref LL_COMP_INPUT_MINUS_DAC1_CH1
* @arg @ref LL_COMP_INPUT_MINUS_DAC1_CH2
* @arg @ref LL_COMP_INPUT_MINUS_1_4VREFINT
* @arg @ref LL_COMP_INPUT_MINUS_1_2VREFINT
* @arg @ref LL_COMP_INPUT_MINUS_3_4VREFINT
* @arg @ref LL_COMP_INPUT_MINUS_IO2
* @param InputPlus This parameter can be one of the following values:
* @arg @ref LL_COMP_INPUT_PLUS_IO1 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO2 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO3 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO4 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO5 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO6 (1)(2)
*
* (1) Available only on COMP instance: COMP2.
* (2) Available only on devices STM32L0 category 1.
* @retval None
*/
__STATIC_INLINE void LL_COMP_ConfigInputs(COMP_TypeDef *COMPx, uint32_t InputMinus, uint32_t InputPlus)
{
MODIFY_REG(COMPx->CSR,
COMP_CSR_COMP2INNSEL | COMP_CSR_COMP2INPSEL,
InputMinus | InputPlus);
}
/**
* @brief Set comparator input plus (non-inverting).
* @note Only COMP2 allows to set the input plus (non-inverting).
* For COMP1 it is always PA1 IO, except when Windows Mode is selected.
* @rmtoll COMP2_CSR COMP2INPSEL LL_COMP_SetInputPlus
* @param COMPx Comparator instance
* @param InputPlus This parameter can be one of the following values:
* @arg @ref LL_COMP_INPUT_PLUS_IO1 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO2 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO3 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO4 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO5 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO6 (1)(2)
*
* (1) Available only on COMP instance: COMP2.
* (2) Available only on devices STM32L0 category 1.
* @retval None
*/
__STATIC_INLINE void LL_COMP_SetInputPlus(COMP_TypeDef *COMPx, uint32_t InputPlus)
{
MODIFY_REG(COMPx->CSR, COMP_CSR_COMP2INPSEL, InputPlus);
}
/**
* @brief Get comparator input plus (non-inverting).
* @note Only COMP2 allows to set the input plus (non-inverting).
* For COMP1 it is always PA1 IO, except when Windows Mode is selected.
* @rmtoll COMP2_CSR COMP2INPSEL LL_COMP_GetInputPlus
* @param COMPx Comparator instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_INPUT_PLUS_IO1 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO2 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO3 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO4 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO5 (1)
* @arg @ref LL_COMP_INPUT_PLUS_IO6 (1)(2)
*
* (1) Available only on COMP instance: COMP2.
* (2) Available only on devices STM32L0 category 1.
*/
__STATIC_INLINE uint32_t LL_COMP_GetInputPlus(COMP_TypeDef *COMPx)
{
return (uint32_t)(READ_BIT(COMPx->CSR, COMP_CSR_COMP2INPSEL));
}
/**
* @brief Set comparator input minus (inverting).
* @note In case of comparator input selected to be connected to IO:
* GPIO pins are specific to each comparator instance.
* Refer to description of parameters or to reference manual.
* @note On this STM32 serie, specificity if using COMP instance COMP2
* with COMP input based on VrefInt (VrefInt or subdivision
* of VrefInt): scaler bridge is based on VrefInt and requires
* to enable path from VrefInt (refer to literal
* SYSCFG_CFGR3_ENBUFLP_VREFINT_COMP).
* @rmtoll COMP1_CSR COMP1INNSEL LL_COMP_SetInputMinus\n
* COMP2_CSR COMP2INNSEL LL_COMP_SetInputMinus
* @param COMPx Comparator instance
* @param InputMinus This parameter can be one of the following values:
* @arg @ref LL_COMP_INPUT_MINUS_VREFINT
* @arg @ref LL_COMP_INPUT_MINUS_IO1
* @arg @ref LL_COMP_INPUT_MINUS_DAC1_CH1
* @arg @ref LL_COMP_INPUT_MINUS_DAC1_CH2
* @arg @ref LL_COMP_INPUT_MINUS_1_4VREFINT (*)
* @arg @ref LL_COMP_INPUT_MINUS_1_2VREFINT (*)
* @arg @ref LL_COMP_INPUT_MINUS_3_4VREFINT (*)
* @arg @ref LL_COMP_INPUT_MINUS_IO2 (*)
*
* (*) Available only on COMP instance: COMP2.
* @retval None
*/
__STATIC_INLINE void LL_COMP_SetInputMinus(COMP_TypeDef *COMPx, uint32_t InputMinus)
{
MODIFY_REG(COMPx->CSR, COMP_CSR_COMP2INNSEL, InputMinus);
}
/**
* @brief Get comparator input minus (inverting).
* @note In case of comparator input selected to be connected to IO:
* GPIO pins are specific to each comparator instance.
* Refer to description of parameters or to reference manual.
* @rmtoll COMP1_CSR COMP1INNSEL LL_COMP_GetInputMinus\n
* COMP2_CSR COMP2INNSEL LL_COMP_GetInputMinus
* @param COMPx Comparator instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_INPUT_MINUS_VREFINT
* @arg @ref LL_COMP_INPUT_MINUS_IO1
* @arg @ref LL_COMP_INPUT_MINUS_DAC1_CH1
* @arg @ref LL_COMP_INPUT_MINUS_DAC1_CH2
* @arg @ref LL_COMP_INPUT_MINUS_1_4VREFINT (*)
* @arg @ref LL_COMP_INPUT_MINUS_1_2VREFINT (*)
* @arg @ref LL_COMP_INPUT_MINUS_3_4VREFINT (*)
* @arg @ref LL_COMP_INPUT_MINUS_IO2 (*)
*
* (*) Available only on COMP instance: COMP2.
*/
__STATIC_INLINE uint32_t LL_COMP_GetInputMinus(COMP_TypeDef *COMPx)
{
return (uint32_t)(READ_BIT(COMPx->CSR, COMP_CSR_COMP2INNSEL));
}
/**
* @}
*/
/** @defgroup COMP_LL_EF_Configuration_comparator_output Configuration of comparator output
* @{
*/
/**
* @brief Set comparator output LPTIM.
* @rmtoll COMP1_CSR COMP1LPTIMIN1 LL_COMP_SetOutputLPTIM\n
* COMP2_CSR COMP2LPTIMIN1 LL_COMP_SetOutputLPTIM\n
* COMP2_CSR COMP2LPTIMIN2 LL_COMP_SetOutputLPTIM
* @param COMPx Comparator instance
* @param OutputLptim This parameter can be one of the following values:
* @arg @ref LL_COMP_OUTPUT_LPTIM1_IN1_COMP1 (*)
* @arg @ref LL_COMP_OUTPUT_LPTIM1_IN1_COMP2 (**)
* @arg @ref LL_COMP_OUTPUT_LPTIM1_IN2_COMP2 (**)
*
* (*) Available only on COMP instance: COMP1.\n
* (**) Available only on COMP instance: COMP2.
* @retval None
*/
__STATIC_INLINE void LL_COMP_SetOutputLPTIM(COMP_TypeDef *COMPx, uint32_t OutputLptim)
{
MODIFY_REG(COMPx->CSR, (COMP_CSR_COMP1LPTIM1IN1 | COMP_CSR_COMP2LPTIM1IN1 | COMP_CSR_COMP2LPTIM1IN2), OutputLptim);
}
/**
* @brief Get comparator output LPTIM.
* @rmtoll COMP1_CSR COMP1LPTIMIN1 LL_COMP_GetOutputLPTIM\n
* COMP2_CSR COMP2LPTIMIN1 LL_COMP_GetOutputLPTIM\n
* COMP2_CSR COMP2LPTIMIN2 LL_COMP_GetOutputLPTIM
* @param COMPx Comparator instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_OUTPUT_LPTIM1_IN1_COMP1 (*)
* @arg @ref LL_COMP_OUTPUT_LPTIM1_IN1_COMP2 (**)
* @arg @ref LL_COMP_OUTPUT_LPTIM1_IN2_COMP2 (**)
*
* (*) Available only on COMP instance: COMP1.\n
* (**) Available only on COMP instance: COMP2.
*/
__STATIC_INLINE uint32_t LL_COMP_GetOutputLPTIM(COMP_TypeDef *COMPx)
{
return (uint32_t)(READ_BIT(COMPx->CSR, (COMP_CSR_COMP1LPTIM1IN1 | COMP_CSR_COMP2LPTIM1IN1 | COMP_CSR_COMP2LPTIM1IN2)));
}
/**
* @brief Set comparator instance output polarity.
* @rmtoll COMP COMP1POLARITY LL_COMP_SetOutputPolarity
* @param COMPx Comparator instance
* @param OutputPolarity This parameter can be one of the following values:
* @arg @ref LL_COMP_OUTPUTPOL_NONINVERTED
* @arg @ref LL_COMP_OUTPUTPOL_INVERTED
* @retval None
*/
__STATIC_INLINE void LL_COMP_SetOutputPolarity(COMP_TypeDef *COMPx, uint32_t OutputPolarity)
{
MODIFY_REG(COMPx->CSR, COMP_CSR_COMPxPOLARITY, OutputPolarity);
}
/**
* @brief Get comparator instance output polarity.
* @rmtoll COMP COMP1POLARITY LL_COMP_GetOutputPolarity
* @param COMPx Comparator instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_OUTPUTPOL_NONINVERTED
* @arg @ref LL_COMP_OUTPUTPOL_INVERTED
*/
__STATIC_INLINE uint32_t LL_COMP_GetOutputPolarity(COMP_TypeDef *COMPx)
{
return (uint32_t)(READ_BIT(COMPx->CSR, COMP_CSR_COMPxPOLARITY));
}
/**
* @}
*/
/** @defgroup COMP_LL_EF_Operation Operation on comparator instance
* @{
*/
/**
* @brief Enable comparator instance.
* @note After enable from off state, comparator requires a delay
* to reach reach propagation delay specification.
* Refer to device datasheet, parameter "tSTART".
* @rmtoll COMP1_CSR COMP1EN LL_COMP_Enable\n
* COMP2_CSR COMP2EN LL_COMP_Enable
* @param COMPx Comparator instance
* @retval None
*/
__STATIC_INLINE void LL_COMP_Enable(COMP_TypeDef *COMPx)
{
SET_BIT(COMPx->CSR, COMP_CSR_COMPxEN);
}
/**
* @brief Disable comparator instance.
* @rmtoll COMP1_CSR COMP1EN LL_COMP_Disable\n
* COMP2_CSR COMP2EN LL_COMP_Disable
* @param COMPx Comparator instance
* @retval None
*/
__STATIC_INLINE void LL_COMP_Disable(COMP_TypeDef *COMPx)
{
CLEAR_BIT(COMPx->CSR, COMP_CSR_COMPxEN);
}
/**
* @brief Get comparator enable state
* (0: COMP is disabled, 1: COMP is enabled)
* @rmtoll COMP1_CSR COMP1EN LL_COMP_IsEnabled\n
* COMP2_CSR COMP2EN LL_COMP_IsEnabled
* @param COMPx Comparator instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_COMP_IsEnabled(COMP_TypeDef *COMPx)
{
return (READ_BIT(COMPx->CSR, COMP_CSR_COMPxEN) == (COMP_CSR_COMPxEN));
}
/**
* @brief Lock comparator instance.
* @note Once locked, comparator configuration can be accessed in read-only.
* @note The only way to unlock the comparator is a device hardware reset.
* @rmtoll COMP1_CSR COMP1LOCK LL_COMP_Lock\n
* COMP2_CSR COMP2LOCK LL_COMP_Lock
* @param COMPx Comparator instance
* @retval None
*/
__STATIC_INLINE void LL_COMP_Lock(COMP_TypeDef *COMPx)
{
SET_BIT(COMPx->CSR, COMP_CSR_COMPxLOCK);
}
/**
* @brief Get comparator lock state
* (0: COMP is unlocked, 1: COMP is locked).
* @note Once locked, comparator configuration can be accessed in read-only.
* @note The only way to unlock the comparator is a device hardware reset.
* @rmtoll COMP1_CSR COMP1LOCK LL_COMP_IsLocked\n
* COMP2_CSR COMP2LOCK LL_COMP_IsLocked
* @param COMPx Comparator instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_COMP_IsLocked(COMP_TypeDef *COMPx)
{
return (READ_BIT(COMPx->CSR, COMP_CSR_COMPxLOCK) == (COMP_CSR_COMPxLOCK));
}
/**
* @brief Read comparator instance output level.
* @note The comparator output level depends on the selected polarity
* (Refer to function @ref LL_COMP_SetOutputPolarity()).
* If the comparator polarity is not inverted:
* - Comparator output is low when the input plus
* is at a lower voltage than the input minus
* - Comparator output is high when the input plus
* is at a higher voltage than the input minus
* If the comparator polarity is inverted:
* - Comparator output is high when the input plus
* is at a lower voltage than the input minus
* - Comparator output is low when the input plus
* is at a higher voltage than the input minus
* @rmtoll COMP1_CSR COMP1VALUE LL_COMP_ReadOutputLevel\n
* COMP2_CSR COMP2VALUE LL_COMP_ReadOutputLevel
* @param COMPx Comparator instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_COMP_OUTPUT_LEVEL_LOW
* @arg @ref LL_COMP_OUTPUT_LEVEL_HIGH
*/
__STATIC_INLINE uint32_t LL_COMP_ReadOutputLevel(COMP_TypeDef *COMPx)
{
return (uint32_t)(READ_BIT(COMPx->CSR, COMP_CSR_COMPxOUTVALUE)
>> LL_COMP_OUTPUT_LEVEL_BITOFFSET_POS);
}
/**
* @}
*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup COMP_LL_EF_Init Initialization and de-initialization functions
* @{
*/
ErrorStatus LL_COMP_DeInit(COMP_TypeDef *COMPx);
ErrorStatus LL_COMP_Init(COMP_TypeDef *COMPx, LL_COMP_InitTypeDef *COMP_InitStruct);
void LL_COMP_StructInit(LL_COMP_InitTypeDef *COMP_InitStruct);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* COMP1 || COMP2 */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_COMP_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_cortex.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of CORTEX LL module.
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The LL CORTEX driver contains a set of generic APIs that can be
used by user:
(+) SYSTICK configuration used by @ref LL_mDelay and @ref LL_Init1msTick
functions
(+) Low power mode configuration (SCB register of Cortex-MCU)
(+) MPU API to configure and enable regions
(+) API to access to MCU info (CPUID register)
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_CORTEX_H
#define __STM32L0xx_LL_CORTEX_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
/** @defgroup CORTEX_LL CORTEX
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup CORTEX_LL_Exported_Constants CORTEX Exported Constants
* @{
*/
/** @defgroup CORTEX_LL_EC_CLKSOURCE_HCLK SYSTICK Clock Source
* @{
*/
#define LL_SYSTICK_CLKSOURCE_HCLK_DIV8 ((uint32_t)0x00000000U) /*!< AHB clock divided by 8 selected as SysTick clock source.*/
#define LL_SYSTICK_CLKSOURCE_HCLK ((uint32_t)SysTick_CTRL_CLKSOURCE_Msk) /*!< AHB clock selected as SysTick clock source. */
/**
* @}
*/
#if __MPU_PRESENT
/** @defgroup CORTEX_LL_EC_CTRL_HFNMI_PRIVDEF MPU Control
* @{
*/
#define LL_MPU_CTRL_HFNMI_PRIVDEF_NONE ((uint32_t)0x00000000U) /*!< Disable NMI and privileged SW access */
#define LL_MPU_CTRL_HARDFAULT_NMI MPU_CTRL_HFNMIENA_Msk /*!< Enables the operation of MPU during hard fault, NMI, and FAULTMASK handlers */
#define LL_MPU_CTRL_PRIVILEGED_DEFAULT MPU_CTRL_PRIVDEFENA_Msk /*!< Enable privileged software access to default memory map */
#define LL_MPU_CTRL_HFNMI_PRIVDEF (MPU_CTRL_HFNMIENA_Msk | MPU_CTRL_PRIVDEFENA_Msk) /*!< Enable NMI and privileged SW access */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_REGION MPU Region Number
* @{
*/
#define LL_MPU_REGION_NUMBER0 ((uint32_t)0x00U) /*!< REGION Number 0 */
#define LL_MPU_REGION_NUMBER1 ((uint32_t)0x01U) /*!< REGION Number 1 */
#define LL_MPU_REGION_NUMBER2 ((uint32_t)0x02U) /*!< REGION Number 2 */
#define LL_MPU_REGION_NUMBER3 ((uint32_t)0x03U) /*!< REGION Number 3 */
#define LL_MPU_REGION_NUMBER4 ((uint32_t)0x04U) /*!< REGION Number 4 */
#define LL_MPU_REGION_NUMBER5 ((uint32_t)0x05U) /*!< REGION Number 5 */
#define LL_MPU_REGION_NUMBER6 ((uint32_t)0x06U) /*!< REGION Number 6 */
#define LL_MPU_REGION_NUMBER7 ((uint32_t)0x07U) /*!< REGION Number 7 */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_REGION_SIZE MPU Region Size
* @{
*/
#define LL_MPU_REGION_SIZE_32B ((uint32_t)(0x04U << MPU_RASR_SIZE_Pos)) /*!< 32B Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_64B ((uint32_t)(0x05U << MPU_RASR_SIZE_Pos)) /*!< 64B Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_128B ((uint32_t)(0x06U << MPU_RASR_SIZE_Pos)) /*!< 128B Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_256B ((uint32_t)(0x07U << MPU_RASR_SIZE_Pos)) /*!< 256B Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_512B ((uint32_t)(0x08U << MPU_RASR_SIZE_Pos)) /*!< 512B Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_1KB ((uint32_t)(0x09U << MPU_RASR_SIZE_Pos)) /*!< 1KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_2KB ((uint32_t)(0x0AU << MPU_RASR_SIZE_Pos)) /*!< 2KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_4KB ((uint32_t)(0x0BU << MPU_RASR_SIZE_Pos)) /*!< 4KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_8KB ((uint32_t)(0x0CU << MPU_RASR_SIZE_Pos)) /*!< 8KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_16KB ((uint32_t)(0x0DU << MPU_RASR_SIZE_Pos)) /*!< 16KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_32KB ((uint32_t)(0x0EU << MPU_RASR_SIZE_Pos)) /*!< 32KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_64KB ((uint32_t)(0x0FU << MPU_RASR_SIZE_Pos)) /*!< 64KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_128KB ((uint32_t)(0x10U << MPU_RASR_SIZE_Pos)) /*!< 128KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_256KB ((uint32_t)(0x11U << MPU_RASR_SIZE_Pos)) /*!< 256KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_512KB ((uint32_t)(0x12U << MPU_RASR_SIZE_Pos)) /*!< 512KB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_1MB ((uint32_t)(0x13U << MPU_RASR_SIZE_Pos)) /*!< 1MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_2MB ((uint32_t)(0x14U << MPU_RASR_SIZE_Pos)) /*!< 2MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_4MB ((uint32_t)(0x15U << MPU_RASR_SIZE_Pos)) /*!< 4MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_8MB ((uint32_t)(0x16U << MPU_RASR_SIZE_Pos)) /*!< 8MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_16MB ((uint32_t)(0x17U << MPU_RASR_SIZE_Pos)) /*!< 16MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_32MB ((uint32_t)(0x18U << MPU_RASR_SIZE_Pos)) /*!< 32MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_64MB ((uint32_t)(0x19U << MPU_RASR_SIZE_Pos)) /*!< 64MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_128MB ((uint32_t)(0x1AU << MPU_RASR_SIZE_Pos)) /*!< 128MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_256MB ((uint32_t)(0x1BU << MPU_RASR_SIZE_Pos)) /*!< 256MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_512MB ((uint32_t)(0x1CU << MPU_RASR_SIZE_Pos)) /*!< 512MB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_1GB ((uint32_t)(0x1DU << MPU_RASR_SIZE_Pos)) /*!< 1GB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_2GB ((uint32_t)(0x1EU << MPU_RASR_SIZE_Pos)) /*!< 2GB Size of the MPU protection region */
#define LL_MPU_REGION_SIZE_4GB ((uint32_t)(0x1FU << MPU_RASR_SIZE_Pos)) /*!< 4GB Size of the MPU protection region */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_REGION_PRIVILEDGES MPU Region Privileges
* @{
*/
#define LL_MPU_REGION_NO_ACCESS ((uint32_t)(0x00U << MPU_RASR_AP_Pos)) /*!< No access*/
#define LL_MPU_REGION_PRIV_RW ((uint32_t)(0x01U << MPU_RASR_AP_Pos)) /*!< RW privileged (privileged access only)*/
#define LL_MPU_REGION_PRIV_RW_URO ((uint32_t)(0x02U << MPU_RASR_AP_Pos)) /*!< RW privileged - RO user (Write in a user program generates a fault) */
#define LL_MPU_REGION_FULL_ACCESS ((uint32_t)(0x03U << MPU_RASR_AP_Pos)) /*!< RW privileged & user (Full access) */
#define LL_MPU_REGION_PRIV_RO ((uint32_t)(0x05U << MPU_RASR_AP_Pos)) /*!< RO privileged (privileged read only)*/
#define LL_MPU_REGION_PRIV_RO_URO ((uint32_t)(0x06U << MPU_RASR_AP_Pos)) /*!< RO privileged & user (read only) */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_TEX MPU TEX Level
* @{
*/
#define LL_MPU_TEX_LEVEL0 ((uint32_t)(0x00U << MPU_RASR_TEX_Pos)) /*!< b000 for TEX bits */
#define LL_MPU_TEX_LEVEL1 ((uint32_t)(0x01U << MPU_RASR_TEX_Pos)) /*!< b001 for TEX bits */
#define LL_MPU_TEX_LEVEL2 ((uint32_t)(0x02U << MPU_RASR_TEX_Pos)) /*!< b010 for TEX bits */
#define LL_MPU_TEX_LEVEL4 ((uint32_t)(0x04U << MPU_RASR_TEX_Pos)) /*!< b100 for TEX bits */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_INSTRUCTION_ACCESS MPU Instruction Access
* @{
*/
#define LL_MPU_INSTRUCTION_ACCESS_ENABLE ((uint32_t)0x00U) /*!< Instruction fetches enabled */
#define LL_MPU_INSTRUCTION_ACCESS_DISABLE MPU_RASR_XN_Msk /*!< Instruction fetches disabled*/
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_SHAREABLE_ACCESS MPU Shareable Access
* @{
*/
#define LL_MPU_ACCESS_SHAREABLE MPU_RASR_S_Msk /*!< Shareable memory attribute */
#define LL_MPU_ACCESS_NOT_SHAREABLE ((uint32_t)0x00U) /*!< Not Shareable memory attribute */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_CACHEABLE_ACCESS MPU Cacheable Access
* @{
*/
#define LL_MPU_ACCESS_CACHEABLE MPU_RASR_C_Msk /*!< Cacheable memory attribute */
#define LL_MPU_ACCESS_NOT_CACHEABLE ((uint32_t)0x00U) /*!< Not Cacheable memory attribute */
/**
* @}
*/
/** @defgroup CORTEX_LL_EC_BUFFERABLE_ACCESS MPU Bufferable Access
* @{
*/
#define LL_MPU_ACCESS_BUFFERABLE MPU_RASR_B_Msk /*!< Bufferable memory attribute */
#define LL_MPU_ACCESS_NOT_BUFFERABLE ((uint32_t)0x00U) /*!< Not Bufferable memory attribute */
/**
* @}
*/
#endif /* __MPU_PRESENT */
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup CORTEX_LL_Exported_Functions CORTEX Exported Functions
* @{
*/
/** @defgroup CORTEX_LL_EF_SYSTICK SYSTICK
* @{
*/
/**
* @brief This function checks if the Systick counter flag is active or not.
* @note It can be used in timeout function on application side.
* @rmtoll STK_CTRL COUNTFLAG LL_SYSTICK_IsActiveCounterFlag
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_SYSTICK_IsActiveCounterFlag(void)
{
return ((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) == (SysTick_CTRL_COUNTFLAG_Msk));
}
/**
* @brief Configures the SysTick clock source
* @rmtoll STK_CTRL CLKSOURCE LL_SYSTICK_SetClkSource
* @param Source This parameter can be one of the following values:
* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK_DIV8
* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK
* @retval None
*/
__STATIC_INLINE void LL_SYSTICK_SetClkSource(uint32_t Source)
{
if (Source == LL_SYSTICK_CLKSOURCE_HCLK)
{
SET_BIT(SysTick->CTRL, LL_SYSTICK_CLKSOURCE_HCLK);
}
else
{
CLEAR_BIT(SysTick->CTRL, LL_SYSTICK_CLKSOURCE_HCLK);
}
}
/**
* @brief Get the SysTick clock source
* @rmtoll STK_CTRL CLKSOURCE LL_SYSTICK_GetClkSource
* @retval Returned value can be one of the following values:
* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK_DIV8
* @arg @ref LL_SYSTICK_CLKSOURCE_HCLK
*/
__STATIC_INLINE uint32_t LL_SYSTICK_GetClkSource(void)
{
return READ_BIT(SysTick->CTRL, LL_SYSTICK_CLKSOURCE_HCLK);
}
/**
* @brief Enable SysTick exception request
* @rmtoll STK_CTRL TICKINT LL_SYSTICK_EnableIT
* @retval None
*/
__STATIC_INLINE void LL_SYSTICK_EnableIT(void)
{
SET_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk);
}
/**
* @brief Disable SysTick exception request
* @rmtoll STK_CTRL TICKINT LL_SYSTICK_DisableIT
* @retval None
*/
__STATIC_INLINE void LL_SYSTICK_DisableIT(void)
{
CLEAR_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk);
}
/**
* @brief Checks if the SYSTICK interrupt is enabled or disabled.
* @rmtoll STK_CTRL TICKINT LL_SYSTICK_IsEnabledIT
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_SYSTICK_IsEnabledIT(void)
{
return (READ_BIT(SysTick->CTRL, SysTick_CTRL_TICKINT_Msk) == (SysTick_CTRL_TICKINT_Msk));
}
/**
* @}
*/
/** @defgroup CORTEX_LL_EF_LOW_POWER_MODE LOW POWER MODE
* @{
*/
/**
* @brief Processor uses sleep as its low power mode
* @rmtoll SCB_SCR SLEEPDEEP LL_LPM_EnableSleep
* @retval None
*/
__STATIC_INLINE void LL_LPM_EnableSleep(void)
{
/* Clear SLEEPDEEP bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
}
/**
* @brief Processor uses deep sleep as its low power mode
* @rmtoll SCB_SCR SLEEPDEEP LL_LPM_EnableDeepSleep
* @retval None
*/
__STATIC_INLINE void LL_LPM_EnableDeepSleep(void)
{
/* Set SLEEPDEEP bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
}
/**
* @brief Configures sleep-on-exit when returning from Handler mode to Thread mode.
* @note Setting this bit to 1 enables an interrupt-driven application to avoid returning to an
* empty main application.
* @rmtoll SCB_SCR SLEEPONEXIT LL_LPM_EnableSleepOnExit
* @retval None
*/
__STATIC_INLINE void LL_LPM_EnableSleepOnExit(void)
{
/* Set SLEEPONEXIT bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
}
/**
* @brief Do not sleep when returning to Thread mode.
* @rmtoll SCB_SCR SLEEPONEXIT LL_LPM_DisableSleepOnExit
* @retval None
*/
__STATIC_INLINE void LL_LPM_DisableSleepOnExit(void)
{
/* Clear SLEEPONEXIT bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
}
/**
* @brief Enabled events and all interrupts, including disabled interrupts, can wakeup the
* processor.
* @rmtoll SCB_SCR SEVEONPEND LL_LPM_EnableEventOnPend
* @retval None
*/
__STATIC_INLINE void LL_LPM_EnableEventOnPend(void)
{
/* Set SEVEONPEND bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
}
/**
* @brief Only enabled interrupts or events can wakeup the processor, disabled interrupts are
* excluded
* @rmtoll SCB_SCR SEVEONPEND LL_LPM_DisableEventOnPend
* @retval None
*/
__STATIC_INLINE void LL_LPM_DisableEventOnPend(void)
{
/* Clear SEVEONPEND bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
}
/**
* @}
*/
/** @defgroup CORTEX_LL_EF_MCU_INFO MCU INFO
* @{
*/
/**
* @brief Get Implementer code
* @rmtoll SCB_CPUID IMPLEMENTER LL_CPUID_GetImplementer
* @retval Value should be equal to 0x41 for ARM
*/
__STATIC_INLINE uint32_t LL_CPUID_GetImplementer(void)
{
return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_IMPLEMENTER_Msk) >> SCB_CPUID_IMPLEMENTER_Pos);
}
/**
* @brief Get Variant number (The r value in the rnpn product revision identifier)
* @rmtoll SCB_CPUID VARIANT LL_CPUID_GetVariant
* @retval Value between 0 and 255 (0x0: revision 0)
*/
__STATIC_INLINE uint32_t LL_CPUID_GetVariant(void)
{
return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_VARIANT_Msk) >> SCB_CPUID_VARIANT_Pos);
}
/**
* @brief Get Architecture number
* @rmtoll SCB_CPUID ARCHITECTURE LL_CPUID_GetArchitecture
* @retval Value should be equal to 0xC for Cortex-M0+ devices
*/
__STATIC_INLINE uint32_t LL_CPUID_GetArchitecture(void)
{
return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_ARCHITECTURE_Msk) >> SCB_CPUID_ARCHITECTURE_Pos);
}
/**
* @brief Get Part number
* @rmtoll SCB_CPUID PARTNO LL_CPUID_GetParNo
* @retval Value should be equal to 0xC60 for Cortex-M0+
*/
__STATIC_INLINE uint32_t LL_CPUID_GetParNo(void)
{
return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_PARTNO_Msk) >> SCB_CPUID_PARTNO_Pos);
}
/**
* @brief Get Revision number (The p value in the rnpn product revision identifier, indicates patch release)
* @rmtoll SCB_CPUID REVISION LL_CPUID_GetRevision
* @retval Value between 0 and 255 (0x1: patch 1)
*/
__STATIC_INLINE uint32_t LL_CPUID_GetRevision(void)
{
return (uint32_t)(READ_BIT(SCB->CPUID, SCB_CPUID_REVISION_Msk) >> SCB_CPUID_REVISION_Pos);
}
/**
* @}
*/
#if __MPU_PRESENT
/** @defgroup CORTEX_LL_EF_MPU MPU
* @{
*/
/**
* @brief Enable MPU with input options
* @rmtoll MPU_CTRL ENABLE LL_MPU_Enable
* @param Options This parameter can be one of the following values:
* @arg @ref LL_MPU_CTRL_HFNMI_PRIVDEF_NONE
* @arg @ref LL_MPU_CTRL_HARDFAULT_NMI
* @arg @ref LL_MPU_CTRL_PRIVILEGED_DEFAULT
* @arg @ref LL_MPU_CTRL_HFNMI_PRIVDEF
* @retval None
*/
__STATIC_INLINE void LL_MPU_Enable(uint32_t Options)
{
/* Enable the MPU*/
WRITE_REG(MPU->CTRL, (MPU_CTRL_ENABLE_Msk | Options));
/* Ensure MPU settings take effects */
__DSB();
/* Sequence instruction fetches using update settings */
__ISB();
}
/**
* @brief Disable MPU
* @rmtoll MPU_CTRL ENABLE LL_MPU_Disable
* @retval None
*/
__STATIC_INLINE void LL_MPU_Disable(void)
{
/* Make sure outstanding transfers are done */
__DMB();
/* Disable MPU*/
WRITE_REG(MPU->CTRL, 0U);
}
/**
* @brief Check if MPU is enabled or not
* @rmtoll MPU_CTRL ENABLE LL_MPU_IsEnabled
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_MPU_IsEnabled(void)
{
return (READ_BIT(MPU->CTRL, MPU_CTRL_ENABLE_Msk) == (MPU_CTRL_ENABLE_Msk));
}
/**
* @brief Enable a MPU region
* @rmtoll MPU_RASR ENABLE LL_MPU_EnableRegion
* @param Region This parameter can be one of the following values:
* @arg @ref LL_MPU_REGION_NUMBER0
* @arg @ref LL_MPU_REGION_NUMBER1
* @arg @ref LL_MPU_REGION_NUMBER2
* @arg @ref LL_MPU_REGION_NUMBER3
* @arg @ref LL_MPU_REGION_NUMBER4
* @arg @ref LL_MPU_REGION_NUMBER5
* @arg @ref LL_MPU_REGION_NUMBER6
* @arg @ref LL_MPU_REGION_NUMBER7
* @retval None
*/
__STATIC_INLINE void LL_MPU_EnableRegion(uint32_t Region)
{
/* Set Region number */
WRITE_REG(MPU->RNR, Region);
/* Enable the MPU region */
SET_BIT(MPU->RASR, MPU_RASR_ENABLE_Msk);
}
/**
* @brief Configure and enable a region
* @rmtoll MPU_RNR REGION LL_MPU_ConfigRegion\n
* MPU_RBAR REGION LL_MPU_ConfigRegion\n
* MPU_RBAR ADDR LL_MPU_ConfigRegion\n
* MPU_RASR XN LL_MPU_ConfigRegion\n
* MPU_RASR AP LL_MPU_ConfigRegion\n
* MPU_RASR S LL_MPU_ConfigRegion\n
* MPU_RASR C LL_MPU_ConfigRegion\n
* MPU_RASR B LL_MPU_ConfigRegion\n
* MPU_RASR SIZE LL_MPU_ConfigRegion
* @param Region This parameter can be one of the following values:
* @arg @ref LL_MPU_REGION_NUMBER0
* @arg @ref LL_MPU_REGION_NUMBER1
* @arg @ref LL_MPU_REGION_NUMBER2
* @arg @ref LL_MPU_REGION_NUMBER3
* @arg @ref LL_MPU_REGION_NUMBER4
* @arg @ref LL_MPU_REGION_NUMBER5
* @arg @ref LL_MPU_REGION_NUMBER6
* @arg @ref LL_MPU_REGION_NUMBER7
* @param Address Value of region base address
* @param SubRegionDisable Sub-region disable value between Min_Data = 0x00 and Max_Data = 0xFF
* @param Attributes This parameter can be a combination of the following values:
* @arg @ref LL_MPU_REGION_SIZE_32B or @ref LL_MPU_REGION_SIZE_64B or @ref LL_MPU_REGION_SIZE_128B or @ref LL_MPU_REGION_SIZE_256B or @ref LL_MPU_REGION_SIZE_512B
* or @ref LL_MPU_REGION_SIZE_1KB or @ref LL_MPU_REGION_SIZE_2KB or @ref LL_MPU_REGION_SIZE_4KB or @ref LL_MPU_REGION_SIZE_8KB or @ref LL_MPU_REGION_SIZE_16KB
* or @ref LL_MPU_REGION_SIZE_32KB or @ref LL_MPU_REGION_SIZE_64KB or @ref LL_MPU_REGION_SIZE_128KB or @ref LL_MPU_REGION_SIZE_256KB or @ref LL_MPU_REGION_SIZE_512KB
* or @ref LL_MPU_REGION_SIZE_1MB or @ref LL_MPU_REGION_SIZE_2MB or @ref LL_MPU_REGION_SIZE_4MB or @ref LL_MPU_REGION_SIZE_8MB or @ref LL_MPU_REGION_SIZE_16MB
* or @ref LL_MPU_REGION_SIZE_32MB or @ref LL_MPU_REGION_SIZE_64MB or @ref LL_MPU_REGION_SIZE_128MB or @ref LL_MPU_REGION_SIZE_256MB or @ref LL_MPU_REGION_SIZE_512MB
* or @ref LL_MPU_REGION_SIZE_1GB or @ref LL_MPU_REGION_SIZE_2GB or @ref LL_MPU_REGION_SIZE_4GB
* @arg @ref LL_MPU_REGION_NO_ACCESS or @ref LL_MPU_REGION_PRIV_RW or @ref LL_MPU_REGION_PRIV_RW_URO or @ref LL_MPU_REGION_FULL_ACCESS
* or @ref LL_MPU_REGION_PRIV_RO or @ref LL_MPU_REGION_PRIV_RO_URO
* @arg @ref LL_MPU_TEX_LEVEL0 or @ref LL_MPU_TEX_LEVEL1 or @ref LL_MPU_TEX_LEVEL2 or @ref LL_MPU_TEX_LEVEL4
* @arg @ref LL_MPU_INSTRUCTION_ACCESS_ENABLE or @ref LL_MPU_INSTRUCTION_ACCESS_DISABLE
* @arg @ref LL_MPU_ACCESS_SHAREABLE or @ref LL_MPU_ACCESS_NOT_SHAREABLE
* @arg @ref LL_MPU_ACCESS_CACHEABLE or @ref LL_MPU_ACCESS_NOT_CACHEABLE
* @arg @ref LL_MPU_ACCESS_BUFFERABLE or @ref LL_MPU_ACCESS_NOT_BUFFERABLE
* @retval None
*/
__STATIC_INLINE void LL_MPU_ConfigRegion(uint32_t Region, uint32_t SubRegionDisable, uint32_t Address, uint32_t Attributes)
{
/* Set Region number */
WRITE_REG(MPU->RNR, Region);
/* Set base address */
WRITE_REG(MPU->RBAR, (Address & 0xFFFFFFE0U));
/* Configure MPU */
WRITE_REG(MPU->RASR, (MPU_RASR_ENABLE_Msk | Attributes | SubRegionDisable << MPU_RASR_SRD_Pos));
}
/**
* @brief Disable a region
* @rmtoll MPU_RNR REGION LL_MPU_DisableRegion\n
* MPU_RASR ENABLE LL_MPU_DisableRegion
* @param Region This parameter can be one of the following values:
* @arg @ref LL_MPU_REGION_NUMBER0
* @arg @ref LL_MPU_REGION_NUMBER1
* @arg @ref LL_MPU_REGION_NUMBER2
* @arg @ref LL_MPU_REGION_NUMBER3
* @arg @ref LL_MPU_REGION_NUMBER4
* @arg @ref LL_MPU_REGION_NUMBER5
* @arg @ref LL_MPU_REGION_NUMBER6
* @arg @ref LL_MPU_REGION_NUMBER7
* @retval None
*/
__STATIC_INLINE void LL_MPU_DisableRegion(uint32_t Region)
{
/* Set Region number */
WRITE_REG(MPU->RNR, Region);
/* Disable the MPU region */
CLEAR_BIT(MPU->RASR, MPU_RASR_ENABLE_Msk);
}
/**
* @}
*/
#endif /* __MPU_PRESENT */
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_CORTEX_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_crc.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief CRC LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_crc.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (CRC)
/** @addtogroup CRC_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup CRC_LL_Exported_Functions
* @{
*/
/** @addtogroup CRC_LL_EF_Init
* @{
*/
/**
* @brief De-initialize CRC registers (Registers restored to their default values).
* @param CRCx CRC Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: CRC registers are de-initialized
* - ERROR: CRC registers are not de-initialized
*/
ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_CRC_ALL_INSTANCE(CRCx));
if (CRCx == CRC)
{
/* Force CRC reset */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_CRC);
/* Release CRC reset */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_CRC);
}
else
{
status = ERROR;
}
return (status);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined (CRC) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_crc.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of CRC LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_CRC_H
#define __STM32L0xx_LL_CRC_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(CRC)
/** @defgroup CRC_LL CRC
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup CRC_LL_Exported_Constants CRC Exported Constants
* @{
*/
/** @defgroup CRC_LL_EC_POLYLENGTH Polynomial length
* @{
*/
#define LL_CRC_POLYLENGTH_32B (uint32_t)0x00000000U /*!< 32 bits Polynomial size */
#define LL_CRC_POLYLENGTH_16B CRC_CR_POLYSIZE_0 /*!< 16 bits Polynomial size */
#define LL_CRC_POLYLENGTH_8B CRC_CR_POLYSIZE_1 /*!< 8 bits Polynomial size */
#define LL_CRC_POLYLENGTH_7B (CRC_CR_POLYSIZE_1 | CRC_CR_POLYSIZE_0) /*!< 7 bits Polynomial size */
/**
* @}
*/
/** @defgroup CRC_LL_EC_INDATA_REVERSE Input Data Reverse
* @{
*/
#define LL_CRC_INDATA_REVERSE_NONE (uint32_t)0x00000000U /*!< Input Data bit order not affected */
#define LL_CRC_INDATA_REVERSE_BYTE CRC_CR_REV_IN_0 /*!< Input Data bit reversal done by byte */
#define LL_CRC_INDATA_REVERSE_HALFWORD CRC_CR_REV_IN_1 /*!< Input Data bit reversal done by half-word */
#define LL_CRC_INDATA_REVERSE_WORD (CRC_CR_REV_IN_1 | CRC_CR_REV_IN_0) /*!< Input Data bit reversal done by word */
/**
* @}
*/
/** @defgroup CRC_LL_EC_OUTDATA_REVERSE Output Data Reverse
* @{
*/
#define LL_CRC_OUTDATA_REVERSE_NONE (uint32_t)0x00000000U /*!< Output Data bit order not affected */
#define LL_CRC_OUTDATA_REVERSE_BIT CRC_CR_REV_OUT /*!< Output Data bit reversal done by bit */
/**
* @}
*/
/** @defgroup CRC_LL_EC_Default_Polynomial_Value Default CRC generating polynomial value
* @brief Normal representation of this polynomial value is
* X^32 + X^26 + X^23 + X^22 + X^16 + X^12 + X^11 + X^10 +X^8 + X^7 + X^5 + X^4 + X^2 + X + 1 .
* @{
*/
#define LL_CRC_DEFAULT_CRC32_POLY (uint32_t)0x04C11DB7U /*!< Default CRC generating polynomial value */
/**
* @}
*/
/** @defgroup CRC_LL_EC_Default_InitValue Default CRC computation initialization value
* @{
*/
#define LL_CRC_DEFAULT_CRC_INITVALUE (uint32_t)0xFFFFFFFFU /*!< Default CRC computation initialization value */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup CRC_LL_Exported_Macros CRC Exported Macros
* @{
*/
/** @defgroup CRC_LL_EM_WRITE_READ Common Write and read registers Macros
* @{
*/
/**
* @brief Write a value in CRC register
* @param __INSTANCE__ CRC Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_CRC_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in CRC register
* @param __INSTANCE__ CRC Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_CRC_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup CRC_LL_Exported_Functions CRC Exported Functions
* @{
*/
/** @defgroup CRC_LL_EF_Configuration CRC Configuration functions
* @{
*/
/**
* @brief Reset the CRC calculation unit.
* @note If Programmable Initial CRC value feature
* is available, also set the Data Register to the value stored in the
* CRC_INIT register, otherwise, reset Data Register to its default value.
* @rmtoll CR RESET LL_CRC_ResetCRCCalculationUnit
* @param CRCx CRC Instance
* @retval None
*/
__STATIC_INLINE void LL_CRC_ResetCRCCalculationUnit(CRC_TypeDef *CRCx)
{
SET_BIT(CRCx->CR, CRC_CR_RESET);
}
/**
* @brief Configure size of the polynomial.
* @rmtoll CR POLYSIZE LL_CRC_SetPolynomialSize
* @param CRCx CRC Instance
* @param PolySize This parameter can be one of the following values:
* @arg @ref LL_CRC_POLYLENGTH_32B
* @arg @ref LL_CRC_POLYLENGTH_16B
* @arg @ref LL_CRC_POLYLENGTH_8B
* @arg @ref LL_CRC_POLYLENGTH_7B
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetPolynomialSize(CRC_TypeDef *CRCx, uint32_t PolySize)
{
MODIFY_REG(CRCx->CR, CRC_CR_POLYSIZE, PolySize);
}
/**
* @brief Return size of the polynomial.
* @rmtoll CR POLYSIZE LL_CRC_GetPolynomialSize
* @param CRCx CRC Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRC_POLYLENGTH_32B
* @arg @ref LL_CRC_POLYLENGTH_16B
* @arg @ref LL_CRC_POLYLENGTH_8B
* @arg @ref LL_CRC_POLYLENGTH_7B
*/
__STATIC_INLINE uint32_t LL_CRC_GetPolynomialSize(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_BIT(CRCx->CR, CRC_CR_POLYSIZE));
}
/**
* @brief Configure the reversal of the bit order of the input data
* @rmtoll CR REV_IN LL_CRC_SetInputDataReverseMode
* @param CRCx CRC Instance
* @param ReverseMode This parameter can be one of the following values:
* @arg @ref LL_CRC_INDATA_REVERSE_NONE
* @arg @ref LL_CRC_INDATA_REVERSE_BYTE
* @arg @ref LL_CRC_INDATA_REVERSE_HALFWORD
* @arg @ref LL_CRC_INDATA_REVERSE_WORD
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetInputDataReverseMode(CRC_TypeDef *CRCx, uint32_t ReverseMode)
{
MODIFY_REG(CRCx->CR, CRC_CR_REV_IN, ReverseMode);
}
/**
* @brief Return type of reversal for input data bit order
* @rmtoll CR REV_IN LL_CRC_GetInputDataReverseMode
* @param CRCx CRC Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRC_INDATA_REVERSE_NONE
* @arg @ref LL_CRC_INDATA_REVERSE_BYTE
* @arg @ref LL_CRC_INDATA_REVERSE_HALFWORD
* @arg @ref LL_CRC_INDATA_REVERSE_WORD
*/
__STATIC_INLINE uint32_t LL_CRC_GetInputDataReverseMode(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_BIT(CRCx->CR, CRC_CR_REV_IN));
}
/**
* @brief Configure the reversal of the bit order of the Output data
* @rmtoll CR REV_OUT LL_CRC_SetOutputDataReverseMode
* @param CRCx CRC Instance
* @param ReverseMode This parameter can be one of the following values:
* @arg @ref LL_CRC_OUTDATA_REVERSE_NONE
* @arg @ref LL_CRC_OUTDATA_REVERSE_BIT
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetOutputDataReverseMode(CRC_TypeDef *CRCx, uint32_t ReverseMode)
{
MODIFY_REG(CRCx->CR, CRC_CR_REV_OUT, ReverseMode);
}
/**
* @brief Configure the reversal of the bit order of the Output data
* @rmtoll CR REV_OUT LL_CRC_GetOutputDataReverseMode
* @param CRCx CRC Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRC_OUTDATA_REVERSE_NONE
* @arg @ref LL_CRC_OUTDATA_REVERSE_BIT
*/
__STATIC_INLINE uint32_t LL_CRC_GetOutputDataReverseMode(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_BIT(CRCx->CR, CRC_CR_REV_OUT));
}
/**
* @brief Initialize the Programmable initial CRC value.
* @note If the CRC size is less than 32 bits, the least significant bits
* are used to write the correct value
* @note LL_CRC_DEFAULT_CRC_INITVALUE could be used as value for InitCrc parameter.
* @rmtoll INIT INIT LL_CRC_SetInitialData
* @param CRCx CRC Instance
* @param InitCrc Value to be programmed in Programmable initial CRC value register
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetInitialData(CRC_TypeDef *CRCx, uint32_t InitCrc)
{
WRITE_REG(CRCx->INIT, InitCrc);
}
/**
* @brief Return current Initial CRC value.
* @note If the CRC size is less than 32 bits, the least significant bits
* are used to read the correct value
* @rmtoll INIT INIT LL_CRC_GetInitialData
* @param CRCx CRC Instance
* @retval Value programmed in Programmable initial CRC value register
*/
__STATIC_INLINE uint32_t LL_CRC_GetInitialData(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->INIT));
}
/**
* @brief Initialize the Programmable polynomial value
* (coefficients of the polynomial to be used for CRC calculation).
* @note LL_CRC_DEFAULT_CRC32_POLY could be used as value for PolynomCoef parameter.
* @note Please check Reference Manual and existing Errata Sheets,
* regarding possible limitations for Polynomial values usage.
* For example, for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65
* @rmtoll POL POL LL_CRC_SetPolynomialCoef
* @param CRCx CRC Instance
* @param PolynomCoef Value to be programmed in Programmable Polynomial value register
* @retval None
*/
__STATIC_INLINE void LL_CRC_SetPolynomialCoef(CRC_TypeDef *CRCx, uint32_t PolynomCoef)
{
WRITE_REG(CRCx->POL, PolynomCoef);
}
/**
* @brief Return current Programmable polynomial value
* @note Please check Reference Manual and existing Errata Sheets,
* regarding possible limitations for Polynomial values usage.
* For example, for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65
* @rmtoll POL POL LL_CRC_GetPolynomialCoef
* @param CRCx CRC Instance
* @retval Value programmed in Programmable Polynomial value register
*/
__STATIC_INLINE uint32_t LL_CRC_GetPolynomialCoef(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->POL));
}
/**
* @}
*/
/** @defgroup CRC_LL_EF_Data_Management Data_Management
* @{
*/
/**
* @brief Write given 32-bit data to the CRC calculator
* @rmtoll DR DR LL_CRC_FeedData32
* @param CRCx CRC Instance
* @param InData value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFFFFFFFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_FeedData32(CRC_TypeDef *CRCx, uint32_t InData)
{
WRITE_REG(CRCx->DR, InData);
}
/**
* @brief Write given 16-bit data to the CRC calculator
* @rmtoll DR DR LL_CRC_FeedData16
* @param CRCx CRC Instance
* @param InData 16 bit value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFFFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_FeedData16(CRC_TypeDef *CRCx, uint16_t InData)
{
*(uint16_t __IO *)(&CRCx->DR) = (uint16_t) InData;
}
/**
* @brief Write given 8-bit data to the CRC calculator
* @rmtoll DR DR LL_CRC_FeedData8
* @param CRCx CRC Instance
* @param InData 8 bit value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_FeedData8(CRC_TypeDef *CRCx, uint8_t InData)
{
*(uint8_t __IO *)(&CRCx->DR) = (uint8_t) InData;
}
/**
* @brief Return current CRC calculation result. 32 bits value is returned.
* @rmtoll DR DR LL_CRC_ReadData32
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (32 bits).
*/
__STATIC_INLINE uint32_t LL_CRC_ReadData32(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->DR));
}
/**
* @brief Return current CRC calculation result. 16 bits value is returned.
* @note This function is expected to be used in a 16 bits CRC polynomial size context.
* @rmtoll DR DR LL_CRC_ReadData16
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (16 bits).
*/
__STATIC_INLINE uint16_t LL_CRC_ReadData16(CRC_TypeDef *CRCx)
{
return (uint16_t)READ_REG(CRCx->DR);
}
/**
* @brief Return current CRC calculation result. 8 bits value is returned.
* @note This function is expected to be used in a 8 bits CRC polynomial size context.
* @rmtoll DR DR LL_CRC_ReadData8
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (8 bits).
*/
__STATIC_INLINE uint8_t LL_CRC_ReadData8(CRC_TypeDef *CRCx)
{
return (uint8_t)READ_REG(CRCx->DR);
}
/**
* @brief Return current CRC calculation result. 7 bits value is returned.
* @note This function is expected to be used in a 7 bits CRC polynomial size context.
* @rmtoll DR DR LL_CRC_ReadData7
* @param CRCx CRC Instance
* @retval Current CRC calculation result as stored in CRC_DR register (7 bits).
*/
__STATIC_INLINE uint8_t LL_CRC_ReadData7(CRC_TypeDef *CRCx)
{
return (uint8_t)(READ_REG(CRCx->DR) & 0x7FU);
}
/**
* @brief Return data stored in the Independent Data(IDR) register.
* @note This register can be used as a temporary storage location for one byte.
* @rmtoll IDR IDR LL_CRC_Read_IDR
* @param CRCx CRC Instance
* @retval Value stored in CRC_IDR register (General-purpose 8-bit data register).
*/
__STATIC_INLINE uint32_t LL_CRC_Read_IDR(CRC_TypeDef *CRCx)
{
return (uint32_t)(READ_REG(CRCx->IDR));
}
/**
* @brief Store data in the Independent Data(IDR) register.
* @note This register can be used as a temporary storage location for one byte.
* @rmtoll IDR IDR LL_CRC_Write_IDR
* @param CRCx CRC Instance
* @param InData value to be stored in CRC_IDR register (8-bit) between between Min_Data=0 and Max_Data=0xFF
* @retval None
*/
__STATIC_INLINE void LL_CRC_Write_IDR(CRC_TypeDef *CRCx, uint32_t InData)
{
*((uint8_t __IO *)(&CRCx->IDR)) = (uint8_t) InData;
}
/**
* @}
*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup CRC_LL_EF_Init Initialization and de-initialization functions
* @{
*/
ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* defined(CRC) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_CRC_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_crs.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief CRS LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_crs.h"
#include "stm32l0xx_ll_bus.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(CRS)
/** @defgroup CRS_LL CRS
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup CRS_LL_Exported_Functions
* @{
*/
/** @addtogroup CRS_LL_EF_Init
* @{
*/
/**
* @brief De-Initializes CRS peripheral registers to their default reset values.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: CRS registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_CRS_DeInit(void)
{
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_CRS);
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_CRS);
return SUCCESS;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined(CRS) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_crs.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of CRS LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_CRS_H
#define __STM32L0xx_LL_CRS_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(CRS)
/** @defgroup CRS_LL CRS
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup CRS_LL_Private_Constants CRS Private Constants
* @{
*/
/* Defines used for the bit position in the register and perform offsets*/
#define CRS_POSITION_TRIM (uint32_t)8U /* bit position in CR reg */
#define CRS_POSITION_FECAP (uint32_t)16U /* bit position in ISR reg */
#define CRS_POSITION_RELOAD (uint32_t)0U /* bit position in CFGR reg */
#define CRS_POSITION_FELIM (uint32_t)16U /* bit position in CFGR reg */
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup CRS_LL_Exported_Constants CRS Exported Constants
* @{
*/
/** @defgroup CRS_LL_EC_GET_FLAG Get Flags Defines
* @brief Flags defines which can be used with LL_CRS_ReadReg function
* @{
*/
#define LL_CRS_ISR_SYNCOKF CRS_ISR_SYNCOKF
#define LL_CRS_ISR_SYNCWARNF CRS_ISR_SYNCWARNF
#define LL_CRS_ISR_ERRF CRS_ISR_ERRF
#define LL_CRS_ISR_ESYNCF CRS_ISR_ESYNCF
#define LL_CRS_ISR_SYNCERR CRS_ISR_SYNCERR
#define LL_CRS_ISR_SYNCMISS CRS_ISR_SYNCMISS
#define LL_CRS_ISR_TRIMOVF CRS_ISR_TRIMOVF
/**
* @}
*/
/** @defgroup CRS_LL_EC_IT IT Defines
* @brief IT defines which can be used with LL_CRS_ReadReg and LL_CRS_WriteReg functions
* @{
*/
#define LL_CRS_CR_SYNCOKIE CRS_CR_SYNCOKIE
#define LL_CRS_CR_SYNCWARNIE CRS_CR_SYNCWARNIE
#define LL_CRS_CR_ERRIE CRS_CR_ERRIE
#define LL_CRS_CR_ESYNCIE CRS_CR_ESYNCIE
/**
* @}
*/
/** @defgroup CRS_LL_EC_SYNC_DIV Synchronization Signal Divider
* @{
*/
#define LL_CRS_SYNC_DIV_1 ((uint32_t)0x00U) /*!< Synchro Signal not divided (default) */
#define LL_CRS_SYNC_DIV_2 CRS_CFGR_SYNCDIV_0 /*!< Synchro Signal divided by 2 */
#define LL_CRS_SYNC_DIV_4 CRS_CFGR_SYNCDIV_1 /*!< Synchro Signal divided by 4 */
#define LL_CRS_SYNC_DIV_8 (CRS_CFGR_SYNCDIV_1 | CRS_CFGR_SYNCDIV_0) /*!< Synchro Signal divided by 8 */
#define LL_CRS_SYNC_DIV_16 CRS_CFGR_SYNCDIV_2 /*!< Synchro Signal divided by 16 */
#define LL_CRS_SYNC_DIV_32 (CRS_CFGR_SYNCDIV_2 | CRS_CFGR_SYNCDIV_0) /*!< Synchro Signal divided by 32 */
#define LL_CRS_SYNC_DIV_64 (CRS_CFGR_SYNCDIV_2 | CRS_CFGR_SYNCDIV_1) /*!< Synchro Signal divided by 64 */
#define LL_CRS_SYNC_DIV_128 CRS_CFGR_SYNCDIV /*!< Synchro Signal divided by 128 */
/**
* @}
*/
/** @defgroup CRS_LL_EC_SYNC_SOURCE Synchronization Signal Source
* @{
*/
#define LL_CRS_SYNC_SOURCE_GPIO ((uint32_t)0x00U) /*!< Synchro Signal soucre GPIO */
#define LL_CRS_SYNC_SOURCE_LSE CRS_CFGR_SYNCSRC_0 /*!< Synchro Signal source LSE */
#define LL_CRS_SYNC_SOURCE_USB CRS_CFGR_SYNCSRC_1 /*!< Synchro Signal source USB SOF (default)*/
/**
* @}
*/
/** @defgroup CRS_LL_EC_SYNC_POLARITY Synchronization Signal Polarity
* @{
*/
#define LL_CRS_SYNC_POLARITY_RISING ((uint32_t)0x00U) /*!< Synchro Active on rising edge (default) */
#define LL_CRS_SYNC_POLARITY_FALLING CRS_CFGR_SYNCPOL /*!< Synchro Active on falling edge */
/**
* @}
*/
/** @defgroup CRS_LL_EC_FREQERRORDIR Frequency Error Direction
* @{
*/
#define LL_CRS_FREQ_ERROR_DIR_UP ((uint32_t)0x00U) /*!< Upcounting direction, the actual frequency is above the target */
#define LL_CRS_FREQ_ERROR_DIR_DOWN ((uint32_t)CRS_ISR_FEDIR) /*!< Downcounting direction, the actual frequency is below the target */
/**
* @}
*/
/** @defgroup CRS_LL_EC_DEFAULTVALUES Default Values
* @{
*/
/**
* @brief Reset value of the RELOAD field
* @note The reset value of the RELOAD field corresponds to a target frequency of 48 MHz
* and a synchronization signal frequency of 1 kHz (SOF signal from USB)
*/
#define LL_CRS_RELOADVALUE_DEFAULT ((uint32_t)0xBB7FU)
/**
* @brief Reset value of Frequency error limit.
*/
#define LL_CRS_ERRORLIMIT_DEFAULT ((uint32_t)0x22U)
/**
* @brief Reset value of the HSI48 Calibration field
* @note The default value is 32, which corresponds to the middle of the trimming interval.
* The trimming step is around 67 kHz between two consecutive TRIM steps.
* A higher TRIM value corresponds to a higher output frequency
*/
#define LL_CRS_HSI48CALIBRATION_DEFAULT ((uint32_t)0x20U)
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup CRS_LL_Exported_Macros CRS Exported Macros
* @{
*/
/** @defgroup CRS_LL_EM_WRITE_READ Common Write and read registers Macros
* @{
*/
/**
* @brief Write a value in CRS register
* @param __INSTANCE__ CRS Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_CRS_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in CRS register
* @param __INSTANCE__ CRS Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_CRS_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/** @defgroup CRS_LL_EM_Exported_Macros_Calculate_Reload Exported_Macros_Calculate_Reload
* @{
*/
/**
* @brief Macro to calculate reload value to be set in CRS register according to target and sync frequencies
* @note The RELOAD value should be selected according to the ratio between
* the target frequency and the frequency of the synchronization source after
* prescaling. It is then decreased by one in order to reach the expected
* synchronization on the zero value. The formula is the following:
* RELOAD = (fTARGET / fSYNC) -1
* @param __FTARGET__ Target frequency (value in Hz)
* @param __FSYNC__ Synchronization signal frequency (value in Hz)
* @retval Reload value (in Hz)
*/
#define __LL_CRS_CALC_CALCULATE_RELOADVALUE(__FTARGET__, __FSYNC__) (((__FTARGET__) / (__FSYNC__)) - 1U)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup CRS_LL_Exported_Functions CRS Exported Functions
* @{
*/
/** @defgroup CRS_LL_EF_Configuration Configuration
* @{
*/
/**
* @brief Enable Frequency error counter
* @note When this bit is set, the CRS_CFGR register is write-protected and cannot be modified
* @rmtoll CR CEN LL_CRS_EnableFreqErrorCounter
* @retval None
*/
__STATIC_INLINE void LL_CRS_EnableFreqErrorCounter(void)
{
SET_BIT(CRS->CR, CRS_CR_CEN);
}
/**
* @brief Disable Frequency error counter
* @rmtoll CR CEN LL_CRS_DisableFreqErrorCounter
* @retval None
*/
__STATIC_INLINE void LL_CRS_DisableFreqErrorCounter(void)
{
CLEAR_BIT(CRS->CR, CRS_CR_CEN);
}
/**
* @brief Check if Frequency error counter is enabled or not
* @rmtoll CR CEN LL_CRS_IsEnabledFreqErrorCounter
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsEnabledFreqErrorCounter(void)
{
return (READ_BIT(CRS->CR, CRS_CR_CEN) == (CRS_CR_CEN));
}
/**
* @brief Enable Automatic trimming counter
* @rmtoll CR AUTOTRIMEN LL_CRS_EnableAutoTrimming
* @retval None
*/
__STATIC_INLINE void LL_CRS_EnableAutoTrimming(void)
{
SET_BIT(CRS->CR, CRS_CR_AUTOTRIMEN);
}
/**
* @brief Disable Automatic trimming counter
* @rmtoll CR AUTOTRIMEN LL_CRS_DisableAutoTrimming
* @retval None
*/
__STATIC_INLINE void LL_CRS_DisableAutoTrimming(void)
{
CLEAR_BIT(CRS->CR, CRS_CR_AUTOTRIMEN);
}
/**
* @brief Check if Automatic trimming is enabled or not
* @rmtoll CR AUTOTRIMEN LL_CRS_IsEnabledAutoTrimming
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsEnabledAutoTrimming(void)
{
return (READ_BIT(CRS->CR, CRS_CR_AUTOTRIMEN) == (CRS_CR_AUTOTRIMEN));
}
/**
* @brief Set HSI48 oscillator smooth trimming
* @note When the AUTOTRIMEN bit is set, this field is controlled by hardware and is read-only
* @rmtoll CR TRIM LL_CRS_SetHSI48SmoothTrimming
* @param Value a number between Min_Data = 0 and Max_Data = 63
* @note Default value can be set thanks to @ref LL_CRS_HSI48CALIBRATION_DEFAULT
* @retval None
*/
__STATIC_INLINE void LL_CRS_SetHSI48SmoothTrimming(uint32_t Value)
{
MODIFY_REG(CRS->CR, CRS_CR_TRIM, Value << CRS_POSITION_TRIM);
}
/**
* @brief Get HSI48 oscillator smooth trimming
* @rmtoll CR TRIM LL_CRS_GetHSI48SmoothTrimming
* @retval a number between Min_Data = 0 and Max_Data = 63
*/
__STATIC_INLINE uint32_t LL_CRS_GetHSI48SmoothTrimming(void)
{
return (uint32_t)(READ_BIT(CRS->CR, CRS_CR_TRIM) >> CRS_POSITION_TRIM);
}
/**
* @brief Set counter reload value
* @rmtoll CFGR RELOAD LL_CRS_SetReloadCounter
* @param Value a number between Min_Data = 0 and Max_Data = 0xFFFF
* @note Default value can be set thanks to @ref LL_CRS_RELOADVALUE_DEFAULT
* Otherwise it can be calculated in using macro @ref __LL_CRS_CALC_CALCULATE_RELOADVALUE (_FTARGET_, _FSYNC_)
* @retval None
*/
__STATIC_INLINE void LL_CRS_SetReloadCounter(uint32_t Value)
{
MODIFY_REG(CRS->CFGR, CRS_CFGR_RELOAD, Value);
}
/**
* @brief Get counter reload value
* @rmtoll CFGR RELOAD LL_CRS_GetReloadCounter
* @retval a number between Min_Data = 0 and Max_Data = 0xFFFF
*/
__STATIC_INLINE uint32_t LL_CRS_GetReloadCounter(void)
{
return (uint32_t)(READ_BIT(CRS->CFGR, CRS_CFGR_RELOAD));
}
/**
* @brief Set frequency error limit
* @rmtoll CFGR FELIM LL_CRS_SetFreqErrorLimit
* @param Value a number between Min_Data = 0 and Max_Data = 255
* @note Default value can be set thanks to @ref LL_CRS_ERRORLIMIT_DEFAULT
* @retval None
*/
__STATIC_INLINE void LL_CRS_SetFreqErrorLimit(uint32_t Value)
{
MODIFY_REG(CRS->CFGR, CRS_CFGR_FELIM, Value << CRS_POSITION_FELIM);
}
/**
* @brief Get frequency error limit
* @rmtoll CFGR FELIM LL_CRS_GetFreqErrorLimit
* @retval A number between Min_Data = 0 and Max_Data = 255
*/
__STATIC_INLINE uint32_t LL_CRS_GetFreqErrorLimit(void)
{
return (uint32_t)(READ_BIT(CRS->CFGR, CRS_CFGR_FELIM) >> CRS_POSITION_FELIM);
}
/**
* @brief Set division factor for SYNC signal
* @rmtoll CFGR SYNCDIV LL_CRS_SetSyncDivider
* @param Divider This parameter can be one of the following values:
* @arg @ref LL_CRS_SYNC_DIV_1
* @arg @ref LL_CRS_SYNC_DIV_2
* @arg @ref LL_CRS_SYNC_DIV_4
* @arg @ref LL_CRS_SYNC_DIV_8
* @arg @ref LL_CRS_SYNC_DIV_16
* @arg @ref LL_CRS_SYNC_DIV_32
* @arg @ref LL_CRS_SYNC_DIV_64
* @arg @ref LL_CRS_SYNC_DIV_128
* @retval None
*/
__STATIC_INLINE void LL_CRS_SetSyncDivider(uint32_t Divider)
{
MODIFY_REG(CRS->CFGR, CRS_CFGR_SYNCDIV, Divider);
}
/**
* @brief Get division factor for SYNC signal
* @rmtoll CFGR SYNCDIV LL_CRS_GetSyncDivider
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRS_SYNC_DIV_1
* @arg @ref LL_CRS_SYNC_DIV_2
* @arg @ref LL_CRS_SYNC_DIV_4
* @arg @ref LL_CRS_SYNC_DIV_8
* @arg @ref LL_CRS_SYNC_DIV_16
* @arg @ref LL_CRS_SYNC_DIV_32
* @arg @ref LL_CRS_SYNC_DIV_64
* @arg @ref LL_CRS_SYNC_DIV_128
*/
__STATIC_INLINE uint32_t LL_CRS_GetSyncDivider(void)
{
return (uint32_t)(READ_BIT(CRS->CFGR, CRS_CFGR_SYNCDIV));
}
/**
* @brief Set SYNC signal source
* @rmtoll CFGR SYNCSRC LL_CRS_SetSyncSignalSource
* @param Source This parameter can be one of the following values:
* @arg @ref LL_CRS_SYNC_SOURCE_GPIO
* @arg @ref LL_CRS_SYNC_SOURCE_LSE
* @arg @ref LL_CRS_SYNC_SOURCE_USB
* @retval None
*/
__STATIC_INLINE void LL_CRS_SetSyncSignalSource(uint32_t Source)
{
MODIFY_REG(CRS->CFGR, CRS_CFGR_SYNCSRC, Source);
}
/**
* @brief Get SYNC signal source
* @rmtoll CFGR SYNCSRC LL_CRS_GetSyncSignalSource
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRS_SYNC_SOURCE_GPIO
* @arg @ref LL_CRS_SYNC_SOURCE_LSE
* @arg @ref LL_CRS_SYNC_SOURCE_USB
*/
__STATIC_INLINE uint32_t LL_CRS_GetSyncSignalSource(void)
{
return (uint32_t)(READ_BIT(CRS->CFGR, CRS_CFGR_SYNCSRC));
}
/**
* @brief Set input polarity for the SYNC signal source
* @rmtoll CFGR SYNCPOL LL_CRS_SetSyncPolarity
* @param Polarity This parameter can be one of the following values:
* @arg @ref LL_CRS_SYNC_POLARITY_RISING
* @arg @ref LL_CRS_SYNC_POLARITY_FALLING
* @retval None
*/
__STATIC_INLINE void LL_CRS_SetSyncPolarity(uint32_t Polarity)
{
MODIFY_REG(CRS->CFGR, CRS_CFGR_SYNCPOL, Polarity);
}
/**
* @brief Get input polarity for the SYNC signal source
* @rmtoll CFGR SYNCPOL LL_CRS_GetSyncPolarity
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRS_SYNC_POLARITY_RISING
* @arg @ref LL_CRS_SYNC_POLARITY_FALLING
*/
__STATIC_INLINE uint32_t LL_CRS_GetSyncPolarity(void)
{
return (uint32_t)(READ_BIT(CRS->CFGR, CRS_CFGR_SYNCPOL));
}
/**
* @brief Configure CRS for the synchronization
* @rmtoll CR TRIM LL_CRS_ConfigSynchronization\n
* CFGR RELOAD LL_CRS_ConfigSynchronization\n
* CFGR FELIM LL_CRS_ConfigSynchronization\n
* CFGR SYNCDIV LL_CRS_ConfigSynchronization\n
* CFGR SYNCSRC LL_CRS_ConfigSynchronization\n
* CFGR SYNCPOL LL_CRS_ConfigSynchronization
* @param HSI48CalibrationValue a number between Min_Data = 0 and Max_Data = 63
* @param ErrorLimitValue a number between Min_Data = 0 and Max_Data = 0xFFFF
* @param ReloadValue a number between Min_Data = 0 and Max_Data = 255
* @param Settings This parameter can be a combination of the following values:
* @arg @ref LL_CRS_SYNC_DIV_1 or @ref LL_CRS_SYNC_DIV_2 or @ref LL_CRS_SYNC_DIV_4 or @ref LL_CRS_SYNC_DIV_8
* or @ref LL_CRS_SYNC_DIV_16 or @ref LL_CRS_SYNC_DIV_32 or @ref LL_CRS_SYNC_DIV_64 or @ref LL_CRS_SYNC_DIV_128
* @arg @ref LL_CRS_SYNC_SOURCE_GPIO or @ref LL_CRS_SYNC_SOURCE_LSE or @ref LL_CRS_SYNC_SOURCE_USB
* @arg @ref LL_CRS_SYNC_POLARITY_RISING or @ref LL_CRS_SYNC_POLARITY_FALLING
* @retval None
*/
__STATIC_INLINE void LL_CRS_ConfigSynchronization(uint32_t HSI48CalibrationValue, uint32_t ErrorLimitValue, uint32_t ReloadValue, uint32_t Settings)
{
MODIFY_REG(CRS->CR, CRS_CR_TRIM, HSI48CalibrationValue);
MODIFY_REG(CRS->CFGR,
CRS_CFGR_RELOAD | CRS_CFGR_FELIM | CRS_CFGR_SYNCDIV | CRS_CFGR_SYNCSRC | CRS_CFGR_SYNCPOL,
ReloadValue | (ErrorLimitValue << CRS_POSITION_FELIM) | Settings);
}
/**
* @}
*/
/** @defgroup CRS_LL_EF_CRS_Management CRS_Management
* @{
*/
/**
* @brief Generate software SYNC event
* @rmtoll CR SWSYNC LL_CRS_GenerateEvent_SWSYNC
* @retval None
*/
__STATIC_INLINE void LL_CRS_GenerateEvent_SWSYNC(void)
{
SET_BIT(CRS->CR, CRS_CR_SWSYNC);
}
/**
* @brief Get the frequency error direction latched in the time of the last
* SYNC event
* @rmtoll ISR FEDIR LL_CRS_GetFreqErrorDirection
* @retval Returned value can be one of the following values:
* @arg @ref LL_CRS_FREQ_ERROR_DIR_UP
* @arg @ref LL_CRS_FREQ_ERROR_DIR_DOWN
*/
__STATIC_INLINE uint32_t LL_CRS_GetFreqErrorDirection(void)
{
return (uint32_t)(READ_BIT(CRS->ISR, CRS_ISR_FEDIR));
}
/**
* @brief Get the frequency error counter value latched in the time of the last SYNC event
* @rmtoll ISR FECAP LL_CRS_GetFreqErrorCapture
* @retval A number between Min_Data = 0x0000 and Max_Data = 0xFFFF
*/
__STATIC_INLINE uint32_t LL_CRS_GetFreqErrorCapture(void)
{
return (uint32_t)(READ_BIT(CRS->ISR, CRS_ISR_FECAP) >> CRS_POSITION_FECAP);
}
/**
* @}
*/
/** @defgroup CRS_LL_EF_FLAG_Management FLAG_Management
* @{
*/
/**
* @brief Check if SYNC event OK signal occurred or not
* @rmtoll ISR SYNCOKF LL_CRS_IsActiveFlag_SYNCOK
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_SYNCOK(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_SYNCOKF) == (CRS_ISR_SYNCOKF));
}
/**
* @brief Check if SYNC warning signal occurred or not
* @rmtoll ISR SYNCWARNF LL_CRS_IsActiveFlag_SYNCWARN
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_SYNCWARN(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_SYNCWARNF) == (CRS_ISR_SYNCWARNF));
}
/**
* @brief Check if Synchronization or trimming error signal occurred or not
* @rmtoll ISR ERRF LL_CRS_IsActiveFlag_ERR
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_ERR(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_ERRF) == (CRS_ISR_ERRF));
}
/**
* @brief Check if Expected SYNC signal occurred or not
* @rmtoll ISR ESYNCF LL_CRS_IsActiveFlag_ESYNC
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_ESYNC(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_ESYNCF) == (CRS_ISR_ESYNCF));
}
/**
* @brief Check if SYNC error signal occurred or not
* @rmtoll ISR SYNCERR LL_CRS_IsActiveFlag_SYNCERR
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_SYNCERR(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_SYNCERR) == (CRS_ISR_SYNCERR));
}
/**
* @brief Check if SYNC missed error signal occurred or not
* @rmtoll ISR SYNCMISS LL_CRS_IsActiveFlag_SYNCMISS
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_SYNCMISS(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_SYNCMISS) == (CRS_ISR_SYNCMISS));
}
/**
* @brief Check if Trimming overflow or underflow occurred or not
* @rmtoll ISR TRIMOVF LL_CRS_IsActiveFlag_TRIMOVF
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsActiveFlag_TRIMOVF(void)
{
return (READ_BIT(CRS->ISR, CRS_ISR_TRIMOVF) == (CRS_ISR_TRIMOVF));
}
/**
* @brief Clear the SYNC event OK flag
* @rmtoll ICR SYNCOKC LL_CRS_ClearFlag_SYNCOK
* @retval None
*/
__STATIC_INLINE void LL_CRS_ClearFlag_SYNCOK(void)
{
WRITE_REG(CRS->ICR, CRS_ICR_SYNCOKC);
}
/**
* @brief Clear the SYNC warning flag
* @rmtoll ICR SYNCWARNC LL_CRS_ClearFlag_SYNCWARN
* @retval None
*/
__STATIC_INLINE void LL_CRS_ClearFlag_SYNCWARN(void)
{
WRITE_REG(CRS->ICR, CRS_ICR_SYNCWARNC);
}
/**
* @brief Clear TRIMOVF, SYNCMISS and SYNCERR bits and consequently also
* the ERR flag
* @rmtoll ICR ERRC LL_CRS_ClearFlag_ERR
* @retval None
*/
__STATIC_INLINE void LL_CRS_ClearFlag_ERR(void)
{
WRITE_REG(CRS->ICR, CRS_ICR_ERRC);
}
/**
* @brief Clear Expected SYNC flag
* @rmtoll ICR ESYNCC LL_CRS_ClearFlag_ESYNC
* @retval None
*/
__STATIC_INLINE void LL_CRS_ClearFlag_ESYNC(void)
{
WRITE_REG(CRS->ICR, CRS_ICR_ESYNCC);
}
/**
* @}
*/
/** @defgroup CRS_LL_EF_IT_Management IT_Management
* @{
*/
/**
* @brief Enable SYNC event OK interrupt
* @rmtoll CR SYNCOKIE LL_CRS_EnableIT_SYNCOK
* @retval None
*/
__STATIC_INLINE void LL_CRS_EnableIT_SYNCOK(void)
{
SET_BIT(CRS->CR, CRS_CR_SYNCOKIE);
}
/**
* @brief Disable SYNC event OK interrupt
* @rmtoll CR SYNCOKIE LL_CRS_DisableIT_SYNCOK
* @retval None
*/
__STATIC_INLINE void LL_CRS_DisableIT_SYNCOK(void)
{
CLEAR_BIT(CRS->CR, CRS_CR_SYNCOKIE);
}
/**
* @brief Check if SYNC event OK interrupt is enabled or not
* @rmtoll CR SYNCOKIE LL_CRS_IsEnabledIT_SYNCOK
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsEnabledIT_SYNCOK(void)
{
return (READ_BIT(CRS->CR, CRS_CR_SYNCOKIE) == (CRS_CR_SYNCOKIE));
}
/**
* @brief Enable SYNC warning interrupt
* @rmtoll CR SYNCWARNIE LL_CRS_EnableIT_SYNCWARN
* @retval None
*/
__STATIC_INLINE void LL_CRS_EnableIT_SYNCWARN(void)
{
SET_BIT(CRS->CR, CRS_CR_SYNCWARNIE);
}
/**
* @brief Disable SYNC warning interrupt
* @rmtoll CR SYNCWARNIE LL_CRS_DisableIT_SYNCWARN
* @retval None
*/
__STATIC_INLINE void LL_CRS_DisableIT_SYNCWARN(void)
{
CLEAR_BIT(CRS->CR, CRS_CR_SYNCWARNIE);
}
/**
* @brief Check if SYNC warning interrupt is enabled or not
* @rmtoll CR SYNCWARNIE LL_CRS_IsEnabledIT_SYNCWARN
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsEnabledIT_SYNCWARN(void)
{
return (READ_BIT(CRS->CR, CRS_CR_SYNCWARNIE) == (CRS_CR_SYNCWARNIE));
}
/**
* @brief Enable Synchronization or trimming error interrupt
* @rmtoll CR ERRIE LL_CRS_EnableIT_ERR
* @retval None
*/
__STATIC_INLINE void LL_CRS_EnableIT_ERR(void)
{
SET_BIT(CRS->CR, CRS_CR_ERRIE);
}
/**
* @brief Disable Synchronization or trimming error interrupt
* @rmtoll CR ERRIE LL_CRS_DisableIT_ERR
* @retval None
*/
__STATIC_INLINE void LL_CRS_DisableIT_ERR(void)
{
CLEAR_BIT(CRS->CR, CRS_CR_ERRIE);
}
/**
* @brief Check if Synchronization or trimming error interrupt is enabled or not
* @rmtoll CR ERRIE LL_CRS_IsEnabledIT_ERR
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsEnabledIT_ERR(void)
{
return (READ_BIT(CRS->CR, CRS_CR_ERRIE) == (CRS_CR_ERRIE));
}
/**
* @brief Enable Expected SYNC interrupt
* @rmtoll CR ESYNCIE LL_CRS_EnableIT_ESYNC
* @retval None
*/
__STATIC_INLINE void LL_CRS_EnableIT_ESYNC(void)
{
SET_BIT(CRS->CR, CRS_CR_ESYNCIE);
}
/**
* @brief Disable Expected SYNC interrupt
* @rmtoll CR ESYNCIE LL_CRS_DisableIT_ESYNC
* @retval None
*/
__STATIC_INLINE void LL_CRS_DisableIT_ESYNC(void)
{
CLEAR_BIT(CRS->CR, CRS_CR_ESYNCIE);
}
/**
* @brief Check if Expected SYNC interrupt is enabled or not
* @rmtoll CR ESYNCIE LL_CRS_IsEnabledIT_ESYNC
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_CRS_IsEnabledIT_ESYNC(void)
{
return (READ_BIT(CRS->CR, CRS_CR_ESYNCIE) == (CRS_CR_ESYNCIE));
}
/**
* @}
*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup CRS_LL_EF_Init Initialization and de-initialization functions
* @{
*/
ErrorStatus LL_CRS_DeInit(void);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* defined(CRS) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_CRS_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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@ -0,0 +1,284 @@
/**
******************************************************************************
* @file stm32l0xx_ll_dac.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief DAC LL module driver
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_dac.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (DAC1)
/** @addtogroup DAC_LL DAC
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup DAC_LL_Private_Macros
* @{
*/
#if defined(DAC_CHANNEL2_SUPPORT)
#define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
( \
((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
|| ((__DAC_CHANNEL__) == LL_DAC_CHANNEL_2) \
)
#else
#define IS_LL_DAC_CHANNEL(__DACX__, __DAC_CHANNEL__) \
( \
((__DAC_CHANNEL__) == LL_DAC_CHANNEL_1) \
)
#endif /* DAC_CHANNEL2_SUPPORT */
#define IS_LL_DAC_TRIGGER_SOURCE(__TRIGGER_SOURCE__) \
( ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_SOFTWARE) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM2_TRGO) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM3_TRGO) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM3_CH3) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM6_TRGO) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM7_TRGO) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_TIM21_TRGO) \
|| ((__TRIGGER_SOURCE__) == LL_DAC_TRIG_EXT_EXTI_LINE9) \
)
#define IS_LL_DAC_WAVE_AUTO_GENER_MODE(__WAVE_AUTO_GENERATION_MODE__) \
( ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NONE) \
|| ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_NOISE) \
|| ((__WAVE_AUTO_GENERATION_MODE__) == LL_DAC_WAVE_AUTO_GENERATION_TRIANGLE) \
)
#define IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(__WAVE_AUTO_GENERATION_CONFIG__) \
( ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BIT0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS1_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS2_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS3_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS4_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS5_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS6_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS7_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS8_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS9_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS10_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_NOISE_LFSR_UNMASK_BITS11_0) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_3) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_7) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_15) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_31) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_63) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_127) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_255) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_511) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_1023) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_2047) \
|| ((__WAVE_AUTO_GENERATION_CONFIG__) == LL_DAC_TRIANGLE_AMPLITUDE_4095) \
)
#define IS_LL_DAC_OUTPUT_BUFFER(__OUTPUT_BUFFER__) \
( ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_ENABLE) \
|| ((__OUTPUT_BUFFER__) == LL_DAC_OUTPUT_BUFFER_DISABLE) \
)
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup DAC_LL_Exported_Functions
* @{
*/
/** @addtogroup DAC_LL_EF_Init
* @{
*/
/**
* @brief De-initialize registers of the selected DAC instance
* to their default reset values.
* @param DACx DAC instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DAC registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_DAC_DeInit(DAC_TypeDef *DACx)
{
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(DACx));
/* Force reset of DAC clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_DAC1);
/* Release reset of DAC clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_DAC1);
return SUCCESS;
}
/**
* @brief Initialize some features of DAC instance.
* @note The setting of these parameters by function @ref LL_DAC_Init()
* is conditioned to DAC state:
* DAC instance must be disabled.
* @param DACx DAC instance
* @param DAC_Channel This parameter can be one of the following values:
* @arg @ref LL_DAC_CHANNEL_1
* @arg @ref LL_DAC_CHANNEL_2 (1)
*
* (1) On this STM32 family, parameter not available on all devices.
* Refer to device datasheet for channels availability.
* @param DAC_InitStruct Pointer to a @ref LL_DAC_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DAC registers are initialized
* - ERROR: DAC registers are not initialized
*/
ErrorStatus LL_DAC_Init(DAC_TypeDef *DACx, uint32_t DAC_Channel, LL_DAC_InitTypeDef *DAC_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_DAC_ALL_INSTANCE(DACx));
assert_param(IS_LL_DAC_CHANNEL(DACx, DAC_Channel));
assert_param(IS_LL_DAC_TRIGGER_SOURCE(DAC_InitStruct->TriggerSource));
assert_param(IS_LL_DAC_OUTPUT_BUFFER(DAC_InitStruct->OutputBuffer));
assert_param(IS_LL_DAC_WAVE_AUTO_GENER_MODE(DAC_InitStruct->WaveAutoGeneration));
if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
{
assert_param(IS_LL_DAC_WAVE_AUTO_GENER_CONFIG(DAC_InitStruct->WaveAutoGenerationConfig));
}
/* Note: Hardware constraint (refer to description of this function) */
/* DAC instance must be disabled. */
if(LL_DAC_IsEnabled(DACx, DAC_Channel) == 0U)
{
/* Configuration of DAC channel: */
/* - TriggerSource */
/* - WaveAutoGeneration */
/* - OutputBuffer */
if (DAC_InitStruct->WaveAutoGeneration != LL_DAC_WAVE_AUTO_GENERATION_NONE)
{
MODIFY_REG(DACx->CR,
( DAC_CR_TSEL1
| DAC_CR_WAVE1
| DAC_CR_MAMP1
| DAC_CR_BOFF1
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
,
( DAC_InitStruct->TriggerSource
| DAC_InitStruct->WaveAutoGeneration
| DAC_InitStruct->WaveAutoGenerationConfig
| DAC_InitStruct->OutputBuffer
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
);
}
else
{
MODIFY_REG(DACx->CR,
( DAC_CR_TSEL1
| DAC_CR_WAVE1
| DAC_CR_BOFF1
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
,
( DAC_InitStruct->TriggerSource
| LL_DAC_WAVE_AUTO_GENERATION_NONE
| DAC_InitStruct->OutputBuffer
) << (DAC_Channel & DAC_CR_CHX_BITOFFSET_MASK)
);
}
}
else
{
/* Initialization error: DAC instance is not disabled. */
status = ERROR;
}
return status;
}
/**
* @brief Set each @ref LL_DAC_InitTypeDef field to default value.
* @param DAC_InitStruct pointer to a @ref LL_DAC_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_DAC_StructInit(LL_DAC_InitTypeDef *DAC_InitStruct)
{
/* Set DAC_InitStruct fields to default values */
DAC_InitStruct->TriggerSource = LL_DAC_TRIG_SOFTWARE;
DAC_InitStruct->WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
/* Note: Parameter discarded if wave auto generation is disabled, */
/* set anyway to its default value. */
DAC_InitStruct->WaveAutoGenerationConfig = LL_DAC_NOISE_LFSR_UNMASK_BIT0;
DAC_InitStruct->OutputBuffer = LL_DAC_OUTPUT_BUFFER_ENABLE;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* DAC1 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_dma.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief DMA LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_dma.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (DMA1)
/** @defgroup DMA_LL DMA
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup DMA_LL_Private_Macros
* @{
*/
#define IS_LL_DMA_DIRECTION(__VALUE__) (((__VALUE__) == LL_DMA_DIRECTION_PERIPH_TO_MEMORY) || \
((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_PERIPH) || \
((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_MEMORY))
#define IS_LL_DMA_MODE(__VALUE__) (((__VALUE__) == LL_DMA_MODE_NORMAL) || \
((__VALUE__) == LL_DMA_MODE_CIRCULAR))
#define IS_LL_DMA_PERIPHINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_PERIPH_INCREMENT) || \
((__VALUE__) == LL_DMA_PERIPH_NOINCREMENT))
#define IS_LL_DMA_MEMORYINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_MEMORY_INCREMENT) || \
((__VALUE__) == LL_DMA_MEMORY_NOINCREMENT))
#define IS_LL_DMA_PERIPHDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_PDATAALIGN_BYTE) || \
((__VALUE__) == LL_DMA_PDATAALIGN_HALFWORD) || \
((__VALUE__) == LL_DMA_PDATAALIGN_WORD))
#define IS_LL_DMA_MEMORYDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_MDATAALIGN_BYTE) || \
((__VALUE__) == LL_DMA_MDATAALIGN_HALFWORD) || \
((__VALUE__) == LL_DMA_MDATAALIGN_WORD))
#define IS_LL_DMA_NBDATA(__VALUE__) ((__VALUE__) <= (uint32_t)0x0000FFFFU)
#define IS_LL_DMA_PERIPHREQUEST(__VALUE__) (((__VALUE__) == LL_DMA_REQUEST_0) || \
((__VALUE__) == LL_DMA_REQUEST_1) || \
((__VALUE__) == LL_DMA_REQUEST_2) || \
((__VALUE__) == LL_DMA_REQUEST_3) || \
((__VALUE__) == LL_DMA_REQUEST_4) || \
((__VALUE__) == LL_DMA_REQUEST_5) || \
((__VALUE__) == LL_DMA_REQUEST_6) || \
((__VALUE__) == LL_DMA_REQUEST_7) || \
((__VALUE__) == LL_DMA_REQUEST_8) || \
((__VALUE__) == LL_DMA_REQUEST_9) || \
((__VALUE__) == LL_DMA_REQUEST_10) || \
((__VALUE__) == LL_DMA_REQUEST_11) || \
((__VALUE__) == LL_DMA_REQUEST_12) || \
((__VALUE__) == LL_DMA_REQUEST_13) || \
((__VALUE__) == LL_DMA_REQUEST_14) || \
((__VALUE__) == LL_DMA_REQUEST_15))
#define IS_LL_DMA_PRIORITY(__VALUE__) (((__VALUE__) == LL_DMA_PRIORITY_LOW) || \
((__VALUE__) == LL_DMA_PRIORITY_MEDIUM) || \
((__VALUE__) == LL_DMA_PRIORITY_HIGH) || \
((__VALUE__) == LL_DMA_PRIORITY_VERYHIGH))
#if defined (DMA1_Channel6) && defined (DMA1_Channel7)
#define IS_LL_DMA_ALL_CHANNEL_INSTANCE(INSTANCE, CHANNEL) ((((INSTANCE) == DMA1) && \
(((CHANNEL) == LL_DMA_CHANNEL_1)|| \
((CHANNEL) == LL_DMA_CHANNEL_2) || \
((CHANNEL) == LL_DMA_CHANNEL_3) || \
((CHANNEL) == LL_DMA_CHANNEL_4) || \
((CHANNEL) == LL_DMA_CHANNEL_5) || \
((CHANNEL) == LL_DMA_CHANNEL_6) || \
((CHANNEL) == LL_DMA_CHANNEL_7))))
#elif defined (DMA1_Channel6)
#define IS_LL_DMA_ALL_CHANNEL_INSTANCE(INSTANCE, CHANNEL) ((((INSTANCE) == DMA1) && \
(((CHANNEL) == LL_DMA_CHANNEL_1)|| \
((CHANNEL) == LL_DMA_CHANNEL_2) || \
((CHANNEL) == LL_DMA_CHANNEL_3) || \
((CHANNEL) == LL_DMA_CHANNEL_4) || \
((CHANNEL) == LL_DMA_CHANNEL_5) || \
((CHANNEL) == LL_DMA_CHANNEL_6))))
#else
#define IS_LL_DMA_ALL_CHANNEL_INSTANCE(INSTANCE, CHANNEL) ((((INSTANCE) == DMA1) && \
(((CHANNEL) == LL_DMA_CHANNEL_1)|| \
((CHANNEL) == LL_DMA_CHANNEL_2) || \
((CHANNEL) == LL_DMA_CHANNEL_3) || \
((CHANNEL) == LL_DMA_CHANNEL_4) || \
((CHANNEL) == LL_DMA_CHANNEL_5))))
#endif /* DMA1_Channel6 && DMA1_Channel7 */
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup DMA_LL_Exported_Functions
* @{
*/
/** @addtogroup DMA_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the DMA registers to their default reset values.
* @param DMAx DMAx Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_DMA_CHANNEL_1
* @arg @ref LL_DMA_CHANNEL_2
* @arg @ref LL_DMA_CHANNEL_3
* @arg @ref LL_DMA_CHANNEL_4
* @arg @ref LL_DMA_CHANNEL_5
* @arg @ref LL_DMA_CHANNEL_6 (*)
* @arg @ref LL_DMA_CHANNEL_7 (*)
* @arg @ref LL_DMA_CHANNEL_ALL
*
* (*) value not defined in all devices
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DMA registers are de-initialized
* - ERROR: DMA registers are not de-initialized
*/
uint32_t LL_DMA_DeInit(DMA_TypeDef *DMAx, uint32_t Channel)
{
DMA_Channel_TypeDef *tmp = (DMA_Channel_TypeDef *)DMA1_Channel1;
ErrorStatus status = SUCCESS;
/* Check the DMA Instance DMAx and Channel parameters*/
assert_param(IS_LL_DMA_ALL_CHANNEL_INSTANCE(DMAx, Channel) || (Channel == LL_DMA_CHANNEL_ALL));
if (Channel == LL_DMA_CHANNEL_ALL)
{
if (DMAx == DMA1)
{
/* Force reset of DMA clock */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA1);
/* Release reset of DMA clock */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA1);
}
#if defined(DMA2)
else if (DMAx == DMA2)
{
/* Force reset of DMA clock */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA2);
/* Release reset of DMA clock */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA2);
}
#endif
else
{
status = ERROR;
}
}
else
{
tmp = (DMA_Channel_TypeDef *)(__LL_DMA_GET_CHANNEL_INSTANCE(DMAx, Channel));
/* Disable the selected DMAx_Channely */
CLEAR_BIT(tmp->CCR, DMA_CCR_EN);
/* Reset DMAx_Channely control register */
LL_DMA_WriteReg(tmp, CCR, 0U);
/* Reset DMAx_Channely remaining bytes register */
LL_DMA_WriteReg(tmp, CNDTR, 0U);
/* Reset DMAx_Channely peripheral address register */
LL_DMA_WriteReg(tmp, CPAR, 0U);
/* Reset DMAx_Channely memory address register */
LL_DMA_WriteReg(tmp, CMAR, 0U);
/* Reset Request register field for DMAx Channel */
LL_DMA_SetPeriphRequest(DMAx, Channel, LL_DMA_REQUEST_0);
if (Channel == LL_DMA_CHANNEL_1)
{
/* Reset interrupt pending bits for DMAx Channel1 */
LL_DMA_ClearFlag_GI1(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_2)
{
/* Reset interrupt pending bits for DMAx Channel2 */
LL_DMA_ClearFlag_GI2(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_3)
{
/* Reset interrupt pending bits for DMAx Channel3 */
LL_DMA_ClearFlag_GI3(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_4)
{
/* Reset interrupt pending bits for DMAx Channel4 */
LL_DMA_ClearFlag_GI4(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_5)
{
/* Reset interrupt pending bits for DMAx Channel5 */
LL_DMA_ClearFlag_GI5(DMAx);
}
#if defined(DMA1_Channel6)
else if (Channel == LL_DMA_CHANNEL_6)
{
/* Reset interrupt pending bits for DMAx Channel6 */
LL_DMA_ClearFlag_GI6(DMAx);
}
#endif
#if defined(DMA1_Channel7)
else if (Channel == LL_DMA_CHANNEL_7)
{
/* Reset interrupt pending bits for DMAx Channel7 */
LL_DMA_ClearFlag_GI7(DMAx);
}
#endif
else
{
status = ERROR;
}
}
return status;
}
/**
* @brief Initialize the DMA registers according to the specified parameters in DMA_InitStruct.
* @note To convert DMAx_Channely Instance to DMAx Instance and Channely, use helper macros :
* @arg @ref __LL_DMA_GET_INSTANCE
* @arg @ref __LL_DMA_GET_CHANNEL
* @param DMAx DMAx Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_DMA_CHANNEL_1
* @arg @ref LL_DMA_CHANNEL_2
* @arg @ref LL_DMA_CHANNEL_3
* @arg @ref LL_DMA_CHANNEL_4
* @arg @ref LL_DMA_CHANNEL_5
* @arg @ref LL_DMA_CHANNEL_6 (*)
* @arg @ref LL_DMA_CHANNEL_7 (*)
*
* (*) value not defined in all devices
* @param DMA_InitStruct pointer to a @ref LL_DMA_InitTypeDef structure.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DMA registers are initialized
* - ERROR: Not applicable
*/
uint32_t LL_DMA_Init(DMA_TypeDef *DMAx, uint32_t Channel, LL_DMA_InitTypeDef *DMA_InitStruct)
{
/* Check the DMA Instance DMAx and Channel parameters*/
assert_param(IS_LL_DMA_ALL_CHANNEL_INSTANCE(DMAx, Channel));
/* Check the DMA parameters from DMA_InitStruct */
assert_param(IS_LL_DMA_DIRECTION(DMA_InitStruct->Direction));
assert_param(IS_LL_DMA_MODE(DMA_InitStruct->Mode));
assert_param(IS_LL_DMA_PERIPHINCMODE(DMA_InitStruct->PeriphOrM2MSrcIncMode));
assert_param(IS_LL_DMA_MEMORYINCMODE(DMA_InitStruct->MemoryOrM2MDstIncMode));
assert_param(IS_LL_DMA_PERIPHDATASIZE(DMA_InitStruct->PeriphOrM2MSrcDataSize));
assert_param(IS_LL_DMA_MEMORYDATASIZE(DMA_InitStruct->MemoryOrM2MDstDataSize));
assert_param(IS_LL_DMA_NBDATA(DMA_InitStruct->NbData));
assert_param(IS_LL_DMA_PERIPHREQUEST(DMA_InitStruct->PeriphRequest));
assert_param(IS_LL_DMA_PRIORITY(DMA_InitStruct->Priority));
/*---------------------------- DMAx CCR Configuration ------------------------
* Configure DMAx_Channely: data transfer direction, data transfer mode,
* peripheral and memory increment mode,
* data size alignment and priority level with parameters :
* - Direction: DMA_CCR_DIR and DMA_CCR_MEM2MEM bits
* - Mode: DMA_CCR_CIRC bit
* - PeriphOrM2MSrcIncMode: DMA_CCR_PINC bit
* - MemoryOrM2MDstIncMode: DMA_CCR_MINC bit
* - PeriphOrM2MSrcDataSize: DMA_CCR_PSIZE[1:0] bits
* - MemoryOrM2MDstDataSize: DMA_CCR_MSIZE[1:0] bits
* - Priority: DMA_CCR_PL[1:0] bits
*/
LL_DMA_ConfigTransfer(DMAx, Channel, DMA_InitStruct->Direction | \
DMA_InitStruct->Mode | \
DMA_InitStruct->PeriphOrM2MSrcIncMode | \
DMA_InitStruct->MemoryOrM2MDstIncMode | \
DMA_InitStruct->PeriphOrM2MSrcDataSize | \
DMA_InitStruct->MemoryOrM2MDstDataSize | \
DMA_InitStruct->Priority);
/*-------------------------- DMAx CMAR Configuration -------------------------
* Configure the memory or destination base address with parameter :
* - MemoryOrM2MDstAddress: DMA_CMAR_MA[31:0] bits
*/
LL_DMA_SetMemoryAddress(DMAx, Channel, DMA_InitStruct->MemoryOrM2MDstAddress);
/*-------------------------- DMAx CPAR Configuration -------------------------
* Configure the peripheral or source base address with parameter :
* - PeriphOrM2MSrcAddress: DMA_CPAR_PA[31:0] bits
*/
LL_DMA_SetPeriphAddress(DMAx, Channel, DMA_InitStruct->PeriphOrM2MSrcAddress);
/*--------------------------- DMAx CNDTR Configuration -----------------------
* Configure the peripheral base address with parameter :
* - NbData: DMA_CNDTR_NDT[15:0] bits
*/
LL_DMA_SetDataLength(DMAx, Channel, DMA_InitStruct->NbData);
/*--------------------------- DMAx CSELR Configuration -----------------------
* Configure the peripheral base address with parameter :
* - PeriphRequest: DMA_CSELR[31:0] bits
*/
LL_DMA_SetPeriphRequest(DMAx, Channel, DMA_InitStruct->PeriphRequest);
return SUCCESS;
}
/**
* @brief Set each @ref LL_DMA_InitTypeDef field to default value.
* @param DMA_InitStruct Pointer to a @ref LL_DMA_InitTypeDef structure.
* @retval None
*/
void LL_DMA_StructInit(LL_DMA_InitTypeDef *DMA_InitStruct)
{
/* Set DMA_InitStruct fields to default values */
DMA_InitStruct->PeriphOrM2MSrcAddress = (uint32_t)0x00000000U;
DMA_InitStruct->MemoryOrM2MDstAddress = (uint32_t)0x00000000U;
DMA_InitStruct->Direction = LL_DMA_DIRECTION_PERIPH_TO_MEMORY;
DMA_InitStruct->Mode = LL_DMA_MODE_NORMAL;
DMA_InitStruct->PeriphOrM2MSrcIncMode = LL_DMA_PERIPH_NOINCREMENT;
DMA_InitStruct->MemoryOrM2MDstIncMode = LL_DMA_MEMORY_NOINCREMENT;
DMA_InitStruct->PeriphOrM2MSrcDataSize = LL_DMA_PDATAALIGN_BYTE;
DMA_InitStruct->MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_BYTE;
DMA_InitStruct->NbData = (uint32_t)0x00000000U;
DMA_InitStruct->PeriphRequest = LL_DMA_REQUEST_0;
DMA_InitStruct->Priority = LL_DMA_PRIORITY_LOW;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* DMA1 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_exti.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief EXTI LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_exti.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (EXTI)
/** @defgroup EXTI_LL EXTI
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup EXTI_LL_Private_Macros
* @{
*/
#define IS_LL_EXTI_LINE_0_31(__VALUE__) (((__VALUE__) & ~LL_EXTI_LINE_ALL_0_31) == 0x00000000U)
#define IS_LL_EXTI_MODE(__VALUE__) (((__VALUE__) == LL_EXTI_MODE_IT) \
|| ((__VALUE__) == LL_EXTI_MODE_EVENT) \
|| ((__VALUE__) == LL_EXTI_MODE_IT_EVENT))
#define IS_LL_EXTI_TRIGGER(__VALUE__) (((__VALUE__) == LL_EXTI_TRIGGER_NONE) \
|| ((__VALUE__) == LL_EXTI_TRIGGER_RISING) \
|| ((__VALUE__) == LL_EXTI_TRIGGER_FALLING) \
|| ((__VALUE__) == LL_EXTI_TRIGGER_RISING_FALLING))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup EXTI_LL_Exported_Functions
* @{
*/
/** @addtogroup EXTI_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the EXTI registers to their default reset values.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: EXTI registers are de-initialized
* - ERROR: not applicable
*/
uint32_t LL_EXTI_DeInit(void)
{
/* Interrupt mask register set to default reset values */
LL_EXTI_WriteReg(IMR, 0x3F840000U);
/* Event mask register set to default reset values */
LL_EXTI_WriteReg(EMR, 0x00000000U);
/* Rising Trigger selection register set to default reset values */
LL_EXTI_WriteReg(RTSR, 0x00000000U);
/* Falling Trigger selection register set to default reset values */
LL_EXTI_WriteReg(FTSR, 0x00000000U);
/* Software interrupt event register set to default reset values */
LL_EXTI_WriteReg(SWIER, 0x00000000U);
/* Pending register set to default reset values */
LL_EXTI_WriteReg(PR, 0x007BFFFFU);
return SUCCESS;
}
/**
* @brief Initialize the EXTI registers according to the specified parameters in EXTI_InitStruct.
* @param EXTI_InitStruct pointer to a @ref LL_EXTI_InitTypeDef structure.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: EXTI registers are initialized
* - ERROR: not applicable
*/
uint32_t LL_EXTI_Init(LL_EXTI_InitTypeDef *EXTI_InitStruct)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_LL_EXTI_LINE_0_31(EXTI_InitStruct->Line_0_31));
assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->LineCommand));
assert_param(IS_LL_EXTI_MODE(EXTI_InitStruct->Mode));
/* ENABLE LineCommand */
if (EXTI_InitStruct->LineCommand != DISABLE)
{
assert_param(IS_LL_EXTI_TRIGGER(EXTI_InitStruct->Trigger));
/* Configure EXTI Lines in range from 0 to 31 */
if (EXTI_InitStruct->Line_0_31 != LL_EXTI_LINE_NONE)
{
switch (EXTI_InitStruct->Mode)
{
case LL_EXTI_MODE_IT:
/* First Disable Event on provided Lines */
LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
/* Then Enable IT on provided Lines */
LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
break;
case LL_EXTI_MODE_EVENT:
/* First Disable IT on provided Lines */
LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
/* Then Enable Event on provided Lines */
LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
break;
case LL_EXTI_MODE_IT_EVENT:
/* Directly Enable IT & Event on provided Lines */
LL_EXTI_EnableIT_0_31(EXTI_InitStruct->Line_0_31);
LL_EXTI_EnableEvent_0_31(EXTI_InitStruct->Line_0_31);
break;
default:
status = ERROR;
break;
}
if (EXTI_InitStruct->Trigger != LL_EXTI_TRIGGER_NONE)
{
switch (EXTI_InitStruct->Trigger)
{
case LL_EXTI_TRIGGER_RISING:
/* First Disable Falling Trigger on provided Lines */
LL_EXTI_DisableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
/* Then Enable Rising Trigger on provided Lines */
LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
break;
case LL_EXTI_TRIGGER_FALLING:
/* First Disable Rising Trigger on provided Lines */
LL_EXTI_DisableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
/* Then Enable Falling Trigger on provided Lines */
LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
break;
case LL_EXTI_TRIGGER_RISING_FALLING:
LL_EXTI_EnableRisingTrig_0_31(EXTI_InitStruct->Line_0_31);
LL_EXTI_EnableFallingTrig_0_31(EXTI_InitStruct->Line_0_31);
break;
default:
status = ERROR;
break;
}
}
}
}
/* DISABLE LineCommand */
else
{
/* De-configure EXTI Lines in range from 0 to 31 */
LL_EXTI_DisableIT_0_31(EXTI_InitStruct->Line_0_31);
LL_EXTI_DisableEvent_0_31(EXTI_InitStruct->Line_0_31);
}
return status;
}
/**
* @brief Set each @ref LL_EXTI_InitTypeDef field to default value.
* @param EXTI_InitStruct Pointer to a @ref LL_EXTI_InitTypeDef structure.
* @retval None
*/
void LL_EXTI_StructInit(LL_EXTI_InitTypeDef *EXTI_InitStruct)
{
EXTI_InitStruct->Line_0_31 = LL_EXTI_LINE_NONE;
EXTI_InitStruct->LineCommand = DISABLE;
EXTI_InitStruct->Mode = LL_EXTI_MODE_IT;
EXTI_InitStruct->Trigger = LL_EXTI_TRIGGER_FALLING;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined (EXTI) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_gpio.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief GPIO LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_gpio.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOH)
/** @addtogroup GPIO_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup GPIO_LL_Private_Macros
* @{
*/
#define IS_LL_GPIO_PIN(__VALUE__) ((((uint32_t)0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL)))
#define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\
((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\
((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\
((__VALUE__) == LL_GPIO_MODE_ANALOG))
#define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\
((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
#define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\
((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\
((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH) ||\
((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH))
#define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\
((__VALUE__) == LL_GPIO_PULL_UP) ||\
((__VALUE__) == LL_GPIO_PULL_DOWN))
#define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\
((__VALUE__) == LL_GPIO_AF_1 ) ||\
((__VALUE__) == LL_GPIO_AF_2 ) ||\
((__VALUE__) == LL_GPIO_AF_3 ) ||\
((__VALUE__) == LL_GPIO_AF_4 ) ||\
((__VALUE__) == LL_GPIO_AF_5 ) ||\
((__VALUE__) == LL_GPIO_AF_6 ) ||\
((__VALUE__) == LL_GPIO_AF_7 ))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup GPIO_LL_Exported_Functions
* @{
*/
/** @addtogroup GPIO_LL_EF_Init
* @{
*/
/**
* @brief De-initialize GPIO registers (Registers restored to their default values).
* @param GPIOx GPIO Port
* @retval An ErrorStatus enumeration value:
* - SUCCESS: GPIO registers are de-initialized
* - ERROR: Wrong GPIO Port
*/
ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
/* Force and Release reset on clock of GPIOx Port */
if (GPIOx == GPIOA)
{
LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOA);
LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOA);
}
else if (GPIOx == GPIOB)
{
LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOB);
LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOB);
}
else if (GPIOx == GPIOC)
{
LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOC);
LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOC);
}
#if defined(GPIOD)
else if (GPIOx == GPIOD)
{
LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOD);
LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOD);
}
#endif /* GPIOD */
#if defined(GPIOE)
else if (GPIOx == GPIOE)
{
LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOE);
LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOE);
}
#endif /* GPIOE */
#if defined(GPIOH)
else if (GPIOx == GPIOH)
{
LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOH);
LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOH);
}
#endif /* GPIOH */
else
{
status = ERROR;
}
return (status);
}
/**
* @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
* @param GPIOx GPIO Port
* @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure
* that contains the configuration information for the specified GPIO peripheral.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
* - ERROR: Not applicable
*/
ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct)
{
uint32_t pinpos = 0x00000000U;
uint32_t currentpin = 0x00000000U;
/* Check the parameters */
assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
/* ------------------------- Configure the port pins ---------------- */
/* Initialize pinpos on first pin set */
/* pinpos = 0; useless as already done in default initialization */
/* Configure the port pins */
while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U)
{
/* Get current io position */
currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos);
if (currentpin)
{
/* Pin Mode configuration */
LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
{
/* Check Speed mode parameters */
assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
/* Speed mode configuration */
LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
}
/* Pull-up Pull down resistor configuration*/
LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)
{
/* Check Alternate parameter */
assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate));
/* Speed mode configuration */
if (currentpin < LL_GPIO_PIN_8)
{
LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate);
}
else
{
LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate);
}
}
}
pinpos++;
}
if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
{
/* Check Output mode parameters */
assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
/* Output mode configuration*/
LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType);
}
return (SUCCESS);
}
/**
* @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
* @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
{
/* Reset GPIO init structure parameters values */
GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL;
GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG;
GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct->Pull = LL_GPIO_PULL_NO;
GPIO_InitStruct->Alternate = LL_GPIO_AF_0;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOH) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_gpio.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of GPIO LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_GPIO_H
#define __STM32L0xx_LL_GPIO_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOH)
/** @defgroup GPIO_LL GPIO
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup GPIO_LL_Private_Macros GPIO Private Macros
* @{
*/
/**
* @}
*/
#endif /*USE_FULL_LL_DRIVER*/
/* Exported types ------------------------------------------------------------*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup GPIO_LL_ES_INIT GPIO Exported Init structures
* @{
*/
/**
* @brief LL GPIO Init Structure definition
*/
typedef struct
{
uint32_t Pin; /*!< Specifies the GPIO pins to be configured.
This parameter can be any value of @ref GPIO_LL_EC_PIN */
uint32_t Mode; /*!< Specifies the operating mode for the selected pins.
This parameter can be a value of @ref GPIO_LL_EC_MODE.
GPIO HW configuration can be modified afterwards using unitary function @ref LL_GPIO_SetPinMode().*/
uint32_t Speed; /*!< Specifies the speed for the selected pins.
This parameter can be a value of @ref GPIO_LL_EC_SPEED.
GPIO HW configuration can be modified afterwards using unitary function @ref LL_GPIO_SetPinSpeed().*/
uint32_t OutputType; /*!< Specifies the operating output type for the selected pins.
This parameter can be a value of @ref GPIO_LL_EC_OUTPUT.
GPIO HW configuration can be modified afterwards using unitary function @ref LL_GPIO_SetPinOutputType().*/
uint32_t Pull; /*!< Specifies the operating Pull-up/Pull down for the selected pins.
This parameter can be a value of @ref GPIO_LL_EC_PULL.
GPIO HW configuration can be modified afterwards using unitary function @ref LL_GPIO_SetPinPull().*/
uint32_t Alternate; /*!< Specifies the Peripheral to be connected to the selected pins.
This parameter can be a value of @ref GPIO_LL_EC_AF.
GPIO HW configuration can be modified afterwards using unitary function @ref LL_GPIO_SetAFPin_0_7() and LL_GPIO_SetAFPin_8_15().*/
} LL_GPIO_InitTypeDef;
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/* Exported constants --------------------------------------------------------*/
/** @defgroup GPIO_LL_Exported_Constants GPIO Exported Constants
* @{
*/
/** @defgroup GPIO_LL_EC_PIN PIN
* @{
*/
#define LL_GPIO_PIN_0 GPIO_BSRR_BS_0 /*!< Select pin 0 */
#define LL_GPIO_PIN_1 GPIO_BSRR_BS_1 /*!< Select pin 1 */
#define LL_GPIO_PIN_2 GPIO_BSRR_BS_2 /*!< Select pin 2 */
#define LL_GPIO_PIN_3 GPIO_BSRR_BS_3 /*!< Select pin 3 */
#define LL_GPIO_PIN_4 GPIO_BSRR_BS_4 /*!< Select pin 4 */
#define LL_GPIO_PIN_5 GPIO_BSRR_BS_5 /*!< Select pin 5 */
#define LL_GPIO_PIN_6 GPIO_BSRR_BS_6 /*!< Select pin 6 */
#define LL_GPIO_PIN_7 GPIO_BSRR_BS_7 /*!< Select pin 7 */
#define LL_GPIO_PIN_8 GPIO_BSRR_BS_8 /*!< Select pin 8 */
#define LL_GPIO_PIN_9 GPIO_BSRR_BS_9 /*!< Select pin 9 */
#define LL_GPIO_PIN_10 GPIO_BSRR_BS_10 /*!< Select pin 10 */
#define LL_GPIO_PIN_11 GPIO_BSRR_BS_11 /*!< Select pin 11 */
#define LL_GPIO_PIN_12 GPIO_BSRR_BS_12 /*!< Select pin 12 */
#define LL_GPIO_PIN_13 GPIO_BSRR_BS_13 /*!< Select pin 13 */
#define LL_GPIO_PIN_14 GPIO_BSRR_BS_14 /*!< Select pin 14 */
#define LL_GPIO_PIN_15 GPIO_BSRR_BS_15 /*!< Select pin 15 */
#define LL_GPIO_PIN_ALL (GPIO_BSRR_BS_0 | GPIO_BSRR_BS_1 | GPIO_BSRR_BS_2 | \
GPIO_BSRR_BS_3 | GPIO_BSRR_BS_4 | GPIO_BSRR_BS_5 | \
GPIO_BSRR_BS_6 | GPIO_BSRR_BS_7 | GPIO_BSRR_BS_8 | \
GPIO_BSRR_BS_9 | GPIO_BSRR_BS_10 | GPIO_BSRR_BS_11 | \
GPIO_BSRR_BS_12 | GPIO_BSRR_BS_13 | GPIO_BSRR_BS_14 | \
GPIO_BSRR_BS_15) /*!< Select all pins */
/**
* @}
*/
/** @defgroup GPIO_LL_EC_MODE Mode
* @{
*/
#define LL_GPIO_MODE_INPUT ((uint32_t)0x00000000U) /*!< Select input mode */
#define LL_GPIO_MODE_OUTPUT GPIO_MODER_MODE0_0 /*!< Select output mode */
#define LL_GPIO_MODE_ALTERNATE GPIO_MODER_MODE0_1 /*!< Select alternate function mode */
#define LL_GPIO_MODE_ANALOG GPIO_MODER_MODE0 /*!< Select analog mode */
/**
* @}
*/
/** @defgroup GPIO_LL_EC_OUTPUT Output Type
* @{
*/
#define LL_GPIO_OUTPUT_PUSHPULL ((uint32_t)0x00000000U) /*!< Select push-pull as output type */
#define LL_GPIO_OUTPUT_OPENDRAIN GPIO_OTYPER_OT_0 /*!< Select open-drain as output type */
/**
* @}
*/
/** @defgroup GPIO_LL_EC_SPEED Output Speed
* @{
*/
#define LL_GPIO_SPEED_FREQ_LOW ((uint32_t)0x00000000U) /*!< Select I/O low output speed */
#define LL_GPIO_SPEED_FREQ_MEDIUM GPIO_OSPEEDER_OSPEED0_0 /*!< Select I/O medium output speed */
#define LL_GPIO_SPEED_FREQ_HIGH GPIO_OSPEEDER_OSPEED0_1 /*!< Select I/O fast output speed */
#define LL_GPIO_SPEED_FREQ_VERY_HIGH GPIO_OSPEEDER_OSPEED0 /*!< Select I/O high output speed */
/**
* @}
*/
#define LL_GPIO_SPEED_LOW LL_GPIO_SPEED_FREQ_LOW
#define LL_GPIO_SPEED_MEDIUM LL_GPIO_SPEED_FREQ_MEDIUM
#define LL_GPIO_SPEED_FAST LL_GPIO_SPEED_FREQ_HIGH
#define LL_GPIO_SPEED_HIGH LL_GPIO_SPEED_FREQ_VERY_HIGH
/** @defgroup GPIO_LL_EC_PULL Pull Up Pull Down
* @{
*/
#define LL_GPIO_PULL_NO ((uint32_t)0x00000000U) /*!< Select I/O no pull */
#define LL_GPIO_PULL_UP GPIO_PUPDR_PUPD0_0 /*!< Select I/O pull up */
#define LL_GPIO_PULL_DOWN GPIO_PUPDR_PUPD0_1 /*!< Select I/O pull down */
/**
* @}
*/
/** @defgroup GPIO_LL_EC_AF Alternate Function
* @{
*/
#define LL_GPIO_AF_0 ((uint32_t)0x0000000U) /*!< Select alternate function 0 */
#define LL_GPIO_AF_1 ((uint32_t)0x0000001U) /*!< Select alternate function 1 */
#define LL_GPIO_AF_2 ((uint32_t)0x0000002U) /*!< Select alternate function 2 */
#define LL_GPIO_AF_3 ((uint32_t)0x0000003U) /*!< Select alternate function 3 */
#define LL_GPIO_AF_4 ((uint32_t)0x0000004U) /*!< Select alternate function 4 */
#define LL_GPIO_AF_5 ((uint32_t)0x0000005U) /*!< Select alternate function 5 */
#define LL_GPIO_AF_6 ((uint32_t)0x0000006U) /*!< Select alternate function 6 */
#define LL_GPIO_AF_7 ((uint32_t)0x0000007U) /*!< Select alternate function 7 */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup GPIO_LL_Exported_Macros GPIO Exported Macros
* @{
*/
/** @defgroup GPIO_LL_EM_WRITE_READ Common Write and read registers Macros
* @{
*/
/**
* @brief Write a value in GPIO register
* @param __INSTANCE__ GPIO Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_GPIO_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in GPIO register
* @param __INSTANCE__ GPIO Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_GPIO_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup GPIO_LL_Exported_Functions GPIO Exported Functions
* @{
*/
/** @defgroup GPIO_LL_EF_Port_Configuration Port Configuration
* @{
*/
/**
* @brief Configure gpio mode for a dedicated pin on dedicated port.
* @note I/O mode can be Input mode, General purpose output, Alternate function mode or Analog.
* @note Warning: only one pin can be passed as parameter.
* @rmtoll MODER MODEy LL_GPIO_SetPinMode
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @param Mode This parameter can be one of the following values:
* @arg @ref LL_GPIO_MODE_INPUT
* @arg @ref LL_GPIO_MODE_OUTPUT
* @arg @ref LL_GPIO_MODE_ALTERNATE
* @arg @ref LL_GPIO_MODE_ANALOG
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetPinMode(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Mode)
{
MODIFY_REG(GPIOx->MODER, ((Pin * Pin) * GPIO_MODER_MODE0), ((Pin * Pin) * Mode));
}
/**
* @brief Return gpio mode for a dedicated pin on dedicated port.
* @note I/O mode can be Input mode, General purpose output, Alternate function mode or Analog.
* @note Warning: only one pin can be passed as parameter.
* @rmtoll MODER MODEy LL_GPIO_GetPinMode
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @retval Returned value can be one of the following values:
* @arg @ref LL_GPIO_MODE_INPUT
* @arg @ref LL_GPIO_MODE_OUTPUT
* @arg @ref LL_GPIO_MODE_ALTERNATE
* @arg @ref LL_GPIO_MODE_ANALOG
*/
__STATIC_INLINE uint32_t LL_GPIO_GetPinMode(GPIO_TypeDef *GPIOx, uint32_t Pin)
{
return (uint32_t)(READ_BIT(GPIOx->MODER, ((Pin * Pin) * GPIO_MODER_MODE0)) / (Pin * Pin));
}
/**
* @brief Configure gpio output type for several pins on dedicated port.
* @note Output type as to be set when gpio pin is in output or
* alternate modes. Possible type are Push-pull or Open-drain.
* @rmtoll OTYPER OTy LL_GPIO_SetPinOutputType
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @param OutputType This parameter can be one of the following values:
* @arg @ref LL_GPIO_OUTPUT_PUSHPULL
* @arg @ref LL_GPIO_OUTPUT_OPENDRAIN
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetPinOutputType(GPIO_TypeDef *GPIOx, uint32_t PinMask, uint32_t OutputType)
{
MODIFY_REG(GPIOx->OTYPER, PinMask, (PinMask * OutputType));
}
/**
* @brief Return gpio output type for several pins on dedicated port.
* @note Output type as to be set when gpio pin is in output or
* alternate modes. Possible type are Push-pull or Open-drain.
* @note Warning: only one pin can be passed as parameter.
* @rmtoll OTYPER OTy LL_GPIO_GetPinOutputType
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval Returned value can be one of the following values:
* @arg @ref LL_GPIO_OUTPUT_PUSHPULL
* @arg @ref LL_GPIO_OUTPUT_OPENDRAIN
*/
__STATIC_INLINE uint32_t LL_GPIO_GetPinOutputType(GPIO_TypeDef *GPIOx, uint32_t Pin)
{
return (uint32_t)(READ_BIT(GPIOx->OTYPER, Pin) / Pin);
}
/**
* @brief Configure gpio speed for a dedicated pin on dedicated port.
* @note I/O speed can be Low, Medium, Fast or High speed.
* @note Warning: only one pin can be passed as parameter.
* @note Refer to datasheet for frequency specifications and the power
* supply and load conditions for each speed.
* @rmtoll OSPEEDR OSPEEDy LL_GPIO_SetPinSpeed
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @param Speed This parameter can be one of the following values:
* @arg @ref LL_GPIO_SPEED_FREQ_LOW
* @arg @ref LL_GPIO_SPEED_FREQ_MEDIUM
* @arg @ref LL_GPIO_SPEED_FREQ_HIGH
* @arg @ref LL_GPIO_SPEED_FREQ_VERY_HIGH
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetPinSpeed(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Speed)
{
MODIFY_REG(GPIOx->OSPEEDR, ((Pin * Pin) * GPIO_OSPEEDER_OSPEED0), ((Pin * Pin) * Speed));
}
/**
* @brief Return gpio speed for a dedicated pin on dedicated port.
* @note I/O speed can be Low, Medium, Fast or High speed.
* @note Warning: only one pin can be passed as parameter.
* @note Refer to datasheet for frequency specifications and the power
* supply and load conditions for each speed.
* @rmtoll OSPEEDR OSPEEDy LL_GPIO_GetPinSpeed
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @retval Returned value can be one of the following values:
* @arg @ref LL_GPIO_SPEED_FREQ_LOW
* @arg @ref LL_GPIO_SPEED_FREQ_MEDIUM
* @arg @ref LL_GPIO_SPEED_FREQ_HIGH
* @arg @ref LL_GPIO_SPEED_FREQ_VERY_HIGH
*/
__STATIC_INLINE uint32_t LL_GPIO_GetPinSpeed(GPIO_TypeDef *GPIOx, uint32_t Pin)
{
return (uint32_t)(READ_BIT(GPIOx->OSPEEDR, ((Pin * Pin) * GPIO_OSPEEDER_OSPEED0)) / (Pin * Pin));
}
/**
* @brief Configure gpio pull-up or pull-down for a dedicated pin on a dedicated port.
* @note Warning: only one pin can be passed as parameter.
* @rmtoll PUPDR PUPDy LL_GPIO_SetPinPull
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @param Pull This parameter can be one of the following values:
* @arg @ref LL_GPIO_PULL_NO
* @arg @ref LL_GPIO_PULL_UP
* @arg @ref LL_GPIO_PULL_DOWN
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetPinPull(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Pull)
{
MODIFY_REG(GPIOx->PUPDR, ((Pin * Pin) * GPIO_PUPDR_PUPD0), ((Pin * Pin) * Pull));
}
/**
* @brief Return gpio pull-up or pull-down for a dedicated pin on a dedicated port
* @note Warning: only one pin can be passed as parameter.
* @rmtoll PUPDR PUPDy LL_GPIO_GetPinPull
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @retval Returned value can be one of the following values:
* @arg @ref LL_GPIO_PULL_NO
* @arg @ref LL_GPIO_PULL_UP
* @arg @ref LL_GPIO_PULL_DOWN
*/
__STATIC_INLINE uint32_t LL_GPIO_GetPinPull(GPIO_TypeDef *GPIOx, uint32_t Pin)
{
return (uint32_t)(READ_BIT(GPIOx->PUPDR, ((Pin * Pin) * GPIO_PUPDR_PUPD0)) / (Pin * Pin));
}
/**
* @brief Configure gpio alternate function of a dedicated pin from 0 to 7 for a dedicated port.
* @note Possible values are from AF0 to AF7 depending on target.
* @note Warning: only one pin can be passed as parameter.
* @rmtoll AFRL AFSELy LL_GPIO_SetAFPin_0_7
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @param Alternate This parameter can be one of the following values:
* @arg @ref LL_GPIO_AF_0
* @arg @ref LL_GPIO_AF_1
* @arg @ref LL_GPIO_AF_2
* @arg @ref LL_GPIO_AF_3
* @arg @ref LL_GPIO_AF_4
* @arg @ref LL_GPIO_AF_5
* @arg @ref LL_GPIO_AF_6
* @arg @ref LL_GPIO_AF_7
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetAFPin_0_7(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Alternate)
{
MODIFY_REG(GPIOx->AFR[0], ((((Pin * Pin) * Pin) * Pin) * GPIO_AFRL_AFRL0),
((((Pin * Pin) * Pin) * Pin) * Alternate));
}
/**
* @brief Return gpio alternate function of a dedicated pin from 0 to 7 for a dedicated port.
* @rmtoll AFRL AFSELy LL_GPIO_GetAFPin_0_7
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @retval Returned value can be one of the following values:
* @arg @ref LL_GPIO_AF_0
* @arg @ref LL_GPIO_AF_1
* @arg @ref LL_GPIO_AF_2
* @arg @ref LL_GPIO_AF_3
* @arg @ref LL_GPIO_AF_4
* @arg @ref LL_GPIO_AF_5
* @arg @ref LL_GPIO_AF_6
* @arg @ref LL_GPIO_AF_7
*/
__STATIC_INLINE uint32_t LL_GPIO_GetAFPin_0_7(GPIO_TypeDef *GPIOx, uint32_t Pin)
{
return (uint32_t)(READ_BIT(GPIOx->AFR[0],
((((Pin * Pin) * Pin) * Pin) * GPIO_AFRL_AFRL0)) / (((Pin * Pin) * Pin) * Pin));
}
/**
* @brief Configure gpio alternate function of a dedicated pin from 8 to 15 for a dedicated port.
* @note Possible values are from AF0 to AF7 depending on target.
* @note Warning: only one pin can be passed as parameter.
* @rmtoll AFRH AFSELy LL_GPIO_SetAFPin_8_15
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @param Alternate This parameter can be one of the following values:
* @arg @ref LL_GPIO_AF_0
* @arg @ref LL_GPIO_AF_1
* @arg @ref LL_GPIO_AF_2
* @arg @ref LL_GPIO_AF_3
* @arg @ref LL_GPIO_AF_4
* @arg @ref LL_GPIO_AF_5
* @arg @ref LL_GPIO_AF_6
* @arg @ref LL_GPIO_AF_7
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetAFPin_8_15(GPIO_TypeDef *GPIOx, uint32_t Pin, uint32_t Alternate)
{
MODIFY_REG(GPIOx->AFR[1], (((((Pin >> 8U) * (Pin >> 8U)) * (Pin >> 8U)) * (Pin >> 8U)) * GPIO_AFRH_AFRH0),
(((((Pin >> 8U) * (Pin >> 8U)) * (Pin >> 8U)) * (Pin >> 8U)) * Alternate));
}
/**
* @brief Return gpio alternate function of a dedicated pin from 8 to 15 for a dedicated port.
* @note Possible values are from AF0 to AF7 depending on target.
* @rmtoll AFRH AFSELy LL_GPIO_GetAFPin_8_15
* @param GPIOx GPIO Port
* @param Pin This parameter can be one of the following values:
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @retval Returned value can be one of the following values:
* @arg @ref LL_GPIO_AF_0
* @arg @ref LL_GPIO_AF_1
* @arg @ref LL_GPIO_AF_2
* @arg @ref LL_GPIO_AF_3
* @arg @ref LL_GPIO_AF_4
* @arg @ref LL_GPIO_AF_5
* @arg @ref LL_GPIO_AF_6
* @arg @ref LL_GPIO_AF_7
*/
__STATIC_INLINE uint32_t LL_GPIO_GetAFPin_8_15(GPIO_TypeDef *GPIOx, uint32_t Pin)
{
return (uint32_t)(READ_BIT(GPIOx->AFR[1],
(((((Pin >> 8U) * (Pin >> 8U)) * (Pin >> 8U)) * (Pin >> 8U)) * GPIO_AFRH_AFRH0)) / ((((Pin >> 8U) *
(Pin >> 8U)) * (Pin >> 8U)) * (Pin >> 8U)));
}
/**
* @brief Lock configuration of several pins for a dedicated port.
* @note When the lock sequence has been applied on a port bit, the
* value of this port bit can no longer be modified until the
* next reset.
* @note Each lock bit freezes a specific configuration register
* (control and alternate function registers).
* @rmtoll LCKR LCKK LL_GPIO_LockPin
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval None
*/
__STATIC_INLINE void LL_GPIO_LockPin(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
__IO uint32_t temp;
WRITE_REG(GPIOx->LCKR, GPIO_LCKR_LCKK | PinMask);
WRITE_REG(GPIOx->LCKR, PinMask);
WRITE_REG(GPIOx->LCKR, GPIO_LCKR_LCKK | PinMask);
temp = READ_REG(GPIOx->LCKR);
(void) temp;
}
/**
* @brief Return 1 if all pins passed as parameter, of a dedicated port, are locked. else Return 0.
* @rmtoll LCKR LCKy LL_GPIO_IsPinLocked
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_GPIO_IsPinLocked(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
return (READ_BIT(GPIOx->LCKR, PinMask) == (PinMask));
}
/**
* @brief Return 1 if one of the pin of a dedicated port is locked. else return 0.
* @rmtoll LCKR LCKK LL_GPIO_IsAnyPinLocked
* @param GPIOx GPIO Port
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_GPIO_IsAnyPinLocked(GPIO_TypeDef *GPIOx)
{
return (READ_BIT(GPIOx->LCKR, GPIO_LCKR_LCKK) == (GPIO_LCKR_LCKK));
}
/**
* @}
*/
/** @defgroup GPIO_LL_EF_Data_Access Data Access
* @{
*/
/**
* @brief Return full input data register value for a dedicated port.
* @rmtoll IDR IDy LL_GPIO_ReadInputPort
* @param GPIOx GPIO Port
* @retval Input data register value of port
*/
__STATIC_INLINE uint32_t LL_GPIO_ReadInputPort(GPIO_TypeDef *GPIOx)
{
return (uint32_t)(READ_REG(GPIOx->IDR));
}
/**
* @brief Return if input data level for several pins of dedicated port is high or low.
* @rmtoll IDR IDy LL_GPIO_IsInputPinSet
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_GPIO_IsInputPinSet(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
return (READ_BIT(GPIOx->IDR, PinMask) == (PinMask));
}
/**
* @brief Write output data register for the port.
* @rmtoll ODR ODy LL_GPIO_WriteOutputPort
* @param GPIOx GPIO Port
* @param PortValue Level value for each pin of the port
* @retval None
*/
__STATIC_INLINE void LL_GPIO_WriteOutputPort(GPIO_TypeDef *GPIOx, uint32_t PortValue)
{
WRITE_REG(GPIOx->ODR, PortValue);
}
/**
* @brief Return full output data register value for a dedicated port.
* @rmtoll ODR ODy LL_GPIO_ReadOutputPort
* @param GPIOx GPIO Port
* @retval Output data register value of port
*/
__STATIC_INLINE uint32_t LL_GPIO_ReadOutputPort(GPIO_TypeDef *GPIOx)
{
return (uint32_t)(READ_REG(GPIOx->ODR));
}
/**
* @brief Return if input data level for several pins of dedicated port is high or low.
* @rmtoll ODR ODy LL_GPIO_IsOutputPinSet
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_GPIO_IsOutputPinSet(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
return (READ_BIT(GPIOx->ODR, PinMask) == (PinMask));
}
/**
* @brief Set several pins to high level on dedicated gpio port.
* @rmtoll BSRR BSy LL_GPIO_SetOutputPin
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval None
*/
__STATIC_INLINE void LL_GPIO_SetOutputPin(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
WRITE_REG(GPIOx->BSRR, PinMask);
}
/**
* @brief Set several pins to low level on dedicated gpio port.
* @rmtoll BRR BRy LL_GPIO_ResetOutputPin
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval None
*/
__STATIC_INLINE void LL_GPIO_ResetOutputPin(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
WRITE_REG(GPIOx->BRR, PinMask);
}
/**
* @brief Toggle data value for several pin of dedicated port.
* @rmtoll ODR ODy LL_GPIO_TogglePin
* @param GPIOx GPIO Port
* @param PinMask This parameter can be a combination of the following values:
* @arg @ref LL_GPIO_PIN_0
* @arg @ref LL_GPIO_PIN_1
* @arg @ref LL_GPIO_PIN_2
* @arg @ref LL_GPIO_PIN_3
* @arg @ref LL_GPIO_PIN_4
* @arg @ref LL_GPIO_PIN_5
* @arg @ref LL_GPIO_PIN_6
* @arg @ref LL_GPIO_PIN_7
* @arg @ref LL_GPIO_PIN_8
* @arg @ref LL_GPIO_PIN_9
* @arg @ref LL_GPIO_PIN_10
* @arg @ref LL_GPIO_PIN_11
* @arg @ref LL_GPIO_PIN_12
* @arg @ref LL_GPIO_PIN_13
* @arg @ref LL_GPIO_PIN_14
* @arg @ref LL_GPIO_PIN_15
* @arg @ref LL_GPIO_PIN_ALL
* @retval None
*/
__STATIC_INLINE void LL_GPIO_TogglePin(GPIO_TypeDef *GPIOx, uint32_t PinMask)
{
WRITE_REG(GPIOx->ODR, READ_REG(GPIOx->ODR) ^ PinMask);
}
/**
* @}
*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup GPIO_LL_EF_Init Initialization and de-initialization functions
* @{
*/
ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx);
ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct);
void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOH) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_GPIO_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_i2c.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief I2C LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_i2c.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (I2C1) || defined (I2C2) || defined (I2C3)
/** @defgroup I2C_LL I2C
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup I2C_LL_Private_Macros
* @{
*/
#define IS_LL_I2C_PERIPHERAL_MODE(__VALUE__) (((__VALUE__) == LL_I2C_MODE_I2C) || \
((__VALUE__) == LL_I2C_MODE_SMBUS_HOST) || \
((__VALUE__) == LL_I2C_MODE_SMBUS_DEVICE) || \
((__VALUE__) == LL_I2C_MODE_SMBUS_DEVICE_ARP))
#define IS_LL_I2C_ANALOG_FILTER(__VALUE__) (((__VALUE__) == LL_I2C_ANALOGFILTER_ENABLE) || \
((__VALUE__) == LL_I2C_ANALOGFILTER_DISABLE))
#define IS_LL_I2C_DIGITAL_FILTER(__VALUE__) ((__VALUE__) <= 0x0000000FU)
#define IS_LL_I2C_OWN_ADDRESS1(__VALUE__) ((__VALUE__) <= (uint32_t)0x000003FFU)
#define IS_LL_I2C_TYPE_ACKNOWLEDGE(__VALUE__) (((__VALUE__) == LL_I2C_ACK) || \
((__VALUE__) == LL_I2C_NACK))
#define IS_LL_I2C_OWN_ADDRSIZE(__VALUE__) (((__VALUE__) == LL_I2C_OWNADDRESS1_7BIT) || \
((__VALUE__) == LL_I2C_OWNADDRESS1_10BIT))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup I2C_LL_Exported_Functions
* @{
*/
/** @addtogroup I2C_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the I2C registers to their default reset values.
* @param I2Cx I2C Instance.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: I2C registers are de-initialized
* - ERROR: I2C registers are not de-initialized
*/
uint32_t LL_I2C_DeInit(I2C_TypeDef *I2Cx)
{
ErrorStatus status = SUCCESS;
/* Check the I2C Instance I2Cx */
assert_param(IS_I2C_ALL_INSTANCE(I2Cx));
if (I2Cx == I2C1)
{
/* Force reset of I2C clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C1);
/* Release reset of I2C clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C1);
}
#if defined(I2C2)
else if (I2Cx == I2C2)
{
/* Force reset of I2C clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C2);
/* Release reset of I2C clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C2);
}
#endif
#if defined(I2C3)
else if (I2Cx == I2C3)
{
/* Force reset of I2C clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C3);
/* Release reset of I2C clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C3);
}
#endif
else
{
status = ERROR;
}
return status;
}
/**
* @brief Initialize the I2C registers according to the specified parameters in I2C_InitStruct.
* @param I2Cx I2C Instance.
* @param I2C_InitStruct pointer to a @ref LL_I2C_InitTypeDef structure.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: I2C registers are initialized
* - ERROR: Not applicable
*/
uint32_t LL_I2C_Init(I2C_TypeDef *I2Cx, LL_I2C_InitTypeDef *I2C_InitStruct)
{
/* Check the I2C Instance I2Cx */
assert_param(IS_I2C_ALL_INSTANCE(I2Cx));
/* Check the I2C parameters from I2C_InitStruct */
assert_param(IS_LL_I2C_PERIPHERAL_MODE(I2C_InitStruct->PeripheralMode));
assert_param(IS_LL_I2C_ANALOG_FILTER(I2C_InitStruct->AnalogFilter));
assert_param(IS_LL_I2C_DIGITAL_FILTER(I2C_InitStruct->DigitalFilter));
assert_param(IS_LL_I2C_OWN_ADDRESS1(I2C_InitStruct->OwnAddress1));
assert_param(IS_LL_I2C_TYPE_ACKNOWLEDGE(I2C_InitStruct->TypeAcknowledge));
assert_param(IS_LL_I2C_OWN_ADDRSIZE(I2C_InitStruct->OwnAddrSize));
/* Disable the selected I2Cx Peripheral */
LL_I2C_Disable(I2Cx);
/*---------------------------- I2Cx CR1 Configuration ------------------------
* Configure the analog and digital noise filters with parameters :
* - AnalogFilter: I2C_CR1_ANFOFF bit
* - DigitalFilter: I2C_CR1_DNF[3:0] bits
*/
LL_I2C_ConfigFilters(I2Cx, I2C_InitStruct->AnalogFilter, I2C_InitStruct->DigitalFilter);
/*---------------------------- I2Cx TIMINGR Configuration --------------------
* Configure the SDA setup, hold time and the SCL high, low period with parameter :
* - Timing: I2C_TIMINGR_PRESC[3:0], I2C_TIMINGR_SCLDEL[3:0], I2C_TIMINGR_SDADEL[3:0],
* I2C_TIMINGR_SCLH[7:0] and I2C_TIMINGR_SCLL[7:0] bits
*/
LL_I2C_SetTiming(I2Cx, I2C_InitStruct->Timing);
/* Enable the selected I2Cx Peripheral */
LL_I2C_Enable(I2Cx);
/*---------------------------- I2Cx OAR1 Configuration -----------------------
* Disable, Configure and Enable I2Cx device own address 1 with parameters :
* - OwnAddress1: I2C_OAR1_OA1[9:0] bits
* - OwnAddrSize: I2C_OAR1_OA1MODE bit
*/
LL_I2C_DisableOwnAddress1(I2Cx);
LL_I2C_SetOwnAddress1(I2Cx, I2C_InitStruct->OwnAddress1, I2C_InitStruct->OwnAddrSize);
LL_I2C_EnableOwnAddress1(I2Cx);
/*---------------------------- I2Cx MODE Configuration -----------------------
* Configure I2Cx peripheral mode with parameter :
* - PeripheralMode: I2C_CR1_SMBDEN and I2C_CR1_SMBHEN bits
*/
LL_I2C_SetMode(I2Cx, I2C_InitStruct->PeripheralMode);
/*---------------------------- I2Cx CR2 Configuration ------------------------
* Configure the ACKnowledge or Non ACKnowledge condition
* after the address receive match code or next received byte with parameter :
* - TypeAcknowledge: I2C_CR2_NACK bit
*/
LL_I2C_AcknowledgeNextData(I2Cx, I2C_InitStruct->TypeAcknowledge);
return SUCCESS;
}
/**
* @brief Set each @ref LL_I2C_InitTypeDef field to default value.
* @param I2C_InitStruct Pointer to a @ref LL_I2C_InitTypeDef structure.
* @retval None
*/
void LL_I2C_StructInit(LL_I2C_InitTypeDef *I2C_InitStruct)
{
/* Set I2C_InitStruct fields to default values */
I2C_InitStruct->PeripheralMode = LL_I2C_MODE_I2C;
I2C_InitStruct->Timing = 0U;
I2C_InitStruct->AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
I2C_InitStruct->DigitalFilter = 0U;
I2C_InitStruct->OwnAddress1 = 0U;
I2C_InitStruct->TypeAcknowledge = LL_I2C_NACK;
I2C_InitStruct->OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* I2C1 || I2C2 || I2C3 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_iwdg.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of IWDG LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_IWDG_H
#define __STM32L0xx_LL_IWDG_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(IWDG)
/** @defgroup IWDG_LL IWDG
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup IWDG_LL_Private_Constants IWDG Private Constants
* @{
*/
#define LL_IWDG_KEY_RELOAD ((uint32_t)0x0000AAAAU) /*!< IWDG Reload Counter Enable */
#define LL_IWDG_KEY_ENABLE ((uint32_t)0x0000CCCCU) /*!< IWDG Peripheral Enable */
#define LL_IWDG_KEY_WR_ACCESS_ENABLE ((uint32_t)0x00005555U) /*!< IWDG KR Write Access Enable */
#define LL_IWDG_KEY_WR_ACCESS_DISABLE ((uint32_t)0x00000000U) /*!< IWDG KR Write Access Disable */
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup IWDG_LL_Exported_Constants IWDG Exported Constants
* @{
*/
/** @defgroup IWDG_LL_EC_GET_FLAG Get Flags Defines
* @brief Flags defines which can be used with LL_IWDG_ReadReg function
* @{
*/
#define LL_IWDG_SR_PVU IWDG_SR_PVU /*!< Watchdog prescaler value update */
#define LL_IWDG_SR_RVU IWDG_SR_RVU /*!< Watchdog counter reload value update */
#define LL_IWDG_SR_WVU IWDG_SR_WVU /*!< Watchdog counter window value update */
/**
* @}
*/
/** @defgroup IWDG_LL_EC_PRESCALER Prescaler Divider
* @{
*/
#define LL_IWDG_PRESCALER_4 ((uint32_t)0x00000000U) /*!< Divider by 4 */
#define LL_IWDG_PRESCALER_8 (IWDG_PR_PR_0) /*!< Divider by 8 */
#define LL_IWDG_PRESCALER_16 (IWDG_PR_PR_1) /*!< Divider by 16 */
#define LL_IWDG_PRESCALER_32 (IWDG_PR_PR_1 | IWDG_PR_PR_0) /*!< Divider by 32 */
#define LL_IWDG_PRESCALER_64 (IWDG_PR_PR_2) /*!< Divider by 64 */
#define LL_IWDG_PRESCALER_128 (IWDG_PR_PR_2 | IWDG_PR_PR_0) /*!< Divider by 128 */
#define LL_IWDG_PRESCALER_256 (IWDG_PR_PR_2 | IWDG_PR_PR_1) /*!< Divider by 256 */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup IWDG_LL_Exported_Macros IWDG Exported Macros
* @{
*/
/** @defgroup IWDG_LL_EM_WRITE_READ Common Write and read registers Macros
* @{
*/
/**
* @brief Write a value in IWDG register
* @param __INSTANCE__ IWDG Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_IWDG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in IWDG register
* @param __INSTANCE__ IWDG Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_IWDG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup IWDG_LL_Exported_Functions IWDG Exported Functions
* @{
*/
/** @defgroup IWDG_LL_EF_Configuration Configuration
* @{
*/
/**
* @brief Start the Independent Watchdog
* @note Except if the hardware watchdog option is selected
* @rmtoll KR KEY LL_IWDG_Enable
* @param IWDGx IWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_IWDG_Enable(IWDG_TypeDef *IWDGx)
{
WRITE_REG(IWDG->KR, LL_IWDG_KEY_ENABLE);
}
/**
* @brief Reloads IWDG counter with value defined in the reload register
* @rmtoll KR KEY LL_IWDG_ReloadCounter
* @param IWDGx IWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_IWDG_ReloadCounter(IWDG_TypeDef *IWDGx)
{
WRITE_REG(IWDG->KR, LL_IWDG_KEY_RELOAD);
}
/**
* @brief Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers
* @rmtoll KR KEY LL_IWDG_EnableWriteAccess
* @param IWDGx IWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_IWDG_EnableWriteAccess(IWDG_TypeDef *IWDGx)
{
WRITE_REG(IWDG->KR, LL_IWDG_KEY_WR_ACCESS_ENABLE);
}
/**
* @brief Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers
* @rmtoll KR KEY LL_IWDG_DisableWriteAccess
* @param IWDGx IWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_IWDG_DisableWriteAccess(IWDG_TypeDef *IWDGx)
{
WRITE_REG(IWDG->KR, LL_IWDG_KEY_WR_ACCESS_DISABLE);
}
/**
* @brief Select the prescaler of the IWDG
* @rmtoll PR PR LL_IWDG_SetPrescaler
* @param IWDGx IWDG Instance
* @param Prescaler This parameter can be one of the following values:
* @arg @ref LL_IWDG_PRESCALER_4
* @arg @ref LL_IWDG_PRESCALER_8
* @arg @ref LL_IWDG_PRESCALER_16
* @arg @ref LL_IWDG_PRESCALER_32
* @arg @ref LL_IWDG_PRESCALER_64
* @arg @ref LL_IWDG_PRESCALER_128
* @arg @ref LL_IWDG_PRESCALER_256
* @retval None
*/
__STATIC_INLINE void LL_IWDG_SetPrescaler(IWDG_TypeDef *IWDGx, uint32_t Prescaler)
{
WRITE_REG(IWDGx->PR, IWDG_PR_PR & Prescaler);
}
/**
* @brief Get the selected prescaler of the IWDG
* @rmtoll PR PR LL_IWDG_GetPrescaler
* @param IWDGx IWDG Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_IWDG_PRESCALER_4
* @arg @ref LL_IWDG_PRESCALER_8
* @arg @ref LL_IWDG_PRESCALER_16
* @arg @ref LL_IWDG_PRESCALER_32
* @arg @ref LL_IWDG_PRESCALER_64
* @arg @ref LL_IWDG_PRESCALER_128
* @arg @ref LL_IWDG_PRESCALER_256
*/
__STATIC_INLINE uint32_t LL_IWDG_GetPrescaler(IWDG_TypeDef *IWDGx)
{
return (uint32_t)(READ_REG(IWDGx->PR));
}
/**
* @brief Specify the IWDG down-counter reload value
* @rmtoll RLR RL LL_IWDG_SetReloadCounter
* @param IWDGx IWDG Instance
* @param Counter Value between Min_Data=0 and Max_Data=0x0FFF
* @retval None
*/
__STATIC_INLINE void LL_IWDG_SetReloadCounter(IWDG_TypeDef *IWDGx, uint32_t Counter)
{
WRITE_REG(IWDGx->RLR, IWDG_RLR_RL & Counter);
}
/**
* @brief Get the specified IWDG down-counter reload value
* @rmtoll RLR RL LL_IWDG_GetReloadCounter
* @param IWDGx IWDG Instance
* @retval Value between Min_Data=0 and Max_Data=0x0FFF
*/
__STATIC_INLINE uint32_t LL_IWDG_GetReloadCounter(IWDG_TypeDef *IWDGx)
{
return (uint32_t)(READ_REG(IWDGx->RLR));
}
/**
* @brief Specify high limit of the window value to be compared to the down-counter.
* @rmtoll WINR WIN LL_IWDG_SetWindow
* @param IWDGx IWDG Instance
* @param Window Value between Min_Data=0 and Max_Data=0x0FFF
* @retval None
*/
__STATIC_INLINE void LL_IWDG_SetWindow(IWDG_TypeDef *IWDGx, uint32_t Window)
{
WRITE_REG(IWDGx->WINR, IWDG_WINR_WIN & Window);
}
/**
* @brief Get the high limit of the window value specified.
* @rmtoll WINR WIN LL_IWDG_GetWindow
* @param IWDGx IWDG Instance
* @retval Value between Min_Data=0 and Max_Data=0x0FFF
*/
__STATIC_INLINE uint32_t LL_IWDG_GetWindow(IWDG_TypeDef *IWDGx)
{
return (uint32_t)(READ_REG(IWDGx->WINR));
}
/**
* @}
*/
/** @defgroup IWDG_LL_EF_FLAG_Management FLAG_Management
* @{
*/
/**
* @brief Check if flag Prescaler Value Update is set or not
* @rmtoll SR PVU LL_IWDG_IsActiveFlag_PVU
* @param IWDGx IWDG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_PVU(IWDG_TypeDef *IWDGx)
{
return (READ_BIT(IWDGx->SR, IWDG_SR_PVU) == (IWDG_SR_PVU));
}
/**
* @brief Check if flag Reload Value Update is set or not
* @rmtoll SR RVU LL_IWDG_IsActiveFlag_RVU
* @param IWDGx IWDG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_RVU(IWDG_TypeDef *IWDGx)
{
return (READ_BIT(IWDGx->SR, IWDG_SR_RVU) == (IWDG_SR_RVU));
}
/**
* @brief Check if flag Window Value Update is set or not
* @rmtoll SR WVU LL_IWDG_IsActiveFlag_WVU
* @param IWDGx IWDG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_WVU(IWDG_TypeDef *IWDGx)
{
return (READ_BIT(IWDGx->SR, IWDG_SR_WVU) == (IWDG_SR_WVU));
}
/**
* @brief Check if all flags Prescaler, Reload & Window Value Update are reset or not
* @rmtoll SR PVU LL_IWDG_IsReady\n
* SR WVU LL_IWDG_IsReady\n
* SR RVU LL_IWDG_IsReady
* @param IWDGx IWDG Instance
* @retval State of bits (1 or 0).
*/
__STATIC_INLINE uint32_t LL_IWDG_IsReady(IWDG_TypeDef *IWDGx)
{
return (READ_BIT(IWDGx->SR, IWDG_SR_PVU | IWDG_SR_RVU | IWDG_SR_WVU) == 0U);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* IWDG) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_IWDG_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_lptim.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief LPTIM LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_lptim.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (LPTIM1) || defined (LPTIM2)
/** @addtogroup LPTIM_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup LPTIM_LL_Private_Macros
* @{
*/
#define IS_LPTIM_CLOCK_SOURCE(__VALUE__) (((__VALUE__) == LL_LPTIM_CLK_SOURCE_INTERNAL) \
|| ((__VALUE__) == LL_LPTIM_CLK_SOURCE_EXTERNAL))
#define IS_LPTIM_CLOCK_PRESCALER(__VALUE__) (((__VALUE__) == LL_LPTIM_PRESCALER_DIV1) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV2) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV4) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV8) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV16) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV32) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV64) \
|| ((__VALUE__) == LL_LPTIM_PRESCALER_DIV128))
#define IS_LPTIM_WAVEFORM(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_PWM) \
|| ((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_SETONCE))
#define IS_LPTIM_OUTPUT_POLARITY(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_REGULAR) \
|| ((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_INVERSE))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup LPTIM_LL_Exported_Functions
* @{
*/
/** @addtogroup LPTIM_LL_EF_Init
* @{
*/
/**
* @brief Set LPTIMx registers to their reset values.
* @param LPTIMx LP Timer instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: LPTIMx registers are de-initialized
* - ERROR: invalid LPTIMx instance
*/
ErrorStatus LL_LPTIM_DeInit(LPTIM_TypeDef* LPTIMx)
{
ErrorStatus result = SUCCESS;
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(LPTIMx));
if (LPTIMx == LPTIM1)
{
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_LPTIM1);
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_LPTIM1);
}
#if defined(LPTIM2)
else if (LPTIMx == LPTIM2)
{
LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_LPTIM2);
LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_LPTIM2);
}
#endif
else
{
result = ERROR;
}
return result;
}
/**
* @brief Set each fields of the LPTIM_InitStruct structure to its default
* value.
* @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure
* @retval None
*/
void LL_LPTIM_StructInit(LL_LPTIM_InitTypeDef* LPTIM_InitStruct)
{
/* Set the default configuration */
LPTIM_InitStruct->ClockSource = LL_LPTIM_CLK_SOURCE_INTERNAL;
LPTIM_InitStruct->Prescaler = LL_LPTIM_PRESCALER_DIV1;
LPTIM_InitStruct->Waveform = LL_LPTIM_OUTPUT_WAVEFORM_PWM;
LPTIM_InitStruct->Polarity = LL_LPTIM_OUTPUT_POLARITY_REGULAR;
}
/**
* @brief Configure the LPTIMx peripheral according to the specified parameters.
* @note LL_LPTIM_Init can only be called when the LPTIM instance is disabled.
* @note LPTIMx can be disabled using unitary function @ref LL_LPTIM_Disable().
* @param LPTIMx LP Timer Instance
* @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: LPTIMx instance has been initialized
* - ERROR: LPTIMx instance hasn't been initialized
*/
ErrorStatus LL_LPTIM_Init(LPTIM_TypeDef * LPTIMx, LL_LPTIM_InitTypeDef* LPTIM_InitStruct)
{
ErrorStatus result = SUCCESS;
/* The LPTIMx_CFGR register must only be modified when the LPTIM is disabled
(ENABLE bit is reset to 0).
*/
if (LL_LPTIM_IsEnabled(LPTIMx))
{
result = ERROR;
}
else
{
/* Check the parameters */
assert_param(IS_LPTIM_INSTANCE(LPTIMx));
assert_param(IS_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->ClockSource));
assert_param(IS_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->Prescaler));
assert_param(IS_LPTIM_WAVEFORM(LPTIM_InitStruct->Waveform));
assert_param(IS_LPTIM_OUTPUT_POLARITY(LPTIM_InitStruct->Polarity));
/* Set CKSEL bitfield according to ClockSource value */
/* Set PRESC bitfield according to Prescaler value */
/* Set WAVE bitfield according to Waveform value */
/* Set WAVEPOL bitfield according to Polarity value */
MODIFY_REG(LPTIMx->CFGR,
(LPTIM_CFGR_CKSEL | LPTIM_CFGR_PRESC | LPTIM_CFGR_WAVE| LPTIM_CFGR_WAVPOL),
LPTIM_InitStruct->ClockSource | \
LPTIM_InitStruct->Prescaler | \
LPTIM_InitStruct->Waveform | \
LPTIM_InitStruct->Polarity);
}
return result;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined (LPTIM1) || defined (LPTIM2) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_lpuart.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief LPUART LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_lpuart.h"
#include "stm32l0xx_ll_rcc.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (LPUART1)
/** @addtogroup LPUART_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @addtogroup LPUART_LL_Private_Constants
* @{
*/
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup LPUART_LL_Private_Macros
* @{
*/
/* Check of parameters for configuration of LPUART registers */
/* __BAUDRATE__ Depending on constraints applicable for LPUART BRR register */
/* value : */
/* - fck must be in the range [3 x baudrate, 4096 x baudrate] */
/* - LPUART_BRR register value should be >= 0x300 */
/* - LPUART_BRR register value should be <= 0xFFFFF (20 bits) */
/* Baudrate specified by the user should belong to [8, 10600000].*/
#define IS_LL_LPUART_BAUDRATE(__BAUDRATE__) (((__BAUDRATE__) <= 10600000U) && ((__BAUDRATE__) >= 8U))
#define IS_LL_LPUART_DIRECTION(__VALUE__) (((__VALUE__) == LL_LPUART_DIRECTION_NONE) \
|| ((__VALUE__) == LL_LPUART_DIRECTION_RX) \
|| ((__VALUE__) == LL_LPUART_DIRECTION_TX) \
|| ((__VALUE__) == LL_LPUART_DIRECTION_TX_RX))
#define IS_LL_LPUART_PARITY(__VALUE__) (((__VALUE__) == LL_LPUART_PARITY_NONE) \
|| ((__VALUE__) == LL_LPUART_PARITY_EVEN) \
|| ((__VALUE__) == LL_LPUART_PARITY_ODD))
#define IS_LL_LPUART_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_LPUART_DATAWIDTH_7B) \
|| ((__VALUE__) == LL_LPUART_DATAWIDTH_8B) \
|| ((__VALUE__) == LL_LPUART_DATAWIDTH_9B))
#define IS_LL_LPUART_STOPBITS(__VALUE__) (((__VALUE__) == LL_LPUART_STOPBITS_1) \
|| ((__VALUE__) == LL_LPUART_STOPBITS_2))
#define IS_LL_LPUART_HWCONTROL(__VALUE__) (((__VALUE__) == LL_LPUART_HWCONTROL_NONE) \
|| ((__VALUE__) == LL_LPUART_HWCONTROL_RTS) \
|| ((__VALUE__) == LL_LPUART_HWCONTROL_CTS) \
|| ((__VALUE__) == LL_LPUART_HWCONTROL_RTS_CTS))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup LPUART_LL_Exported_Functions
* @{
*/
/** @addtogroup LPUART_LL_EF_Init
* @{
*/
/**
* @brief De-initialize LPUART registers (Registers restored to their default values).
* @param LPUARTx LPUART Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: LPUART registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_LPUART_DeInit(USART_TypeDef *LPUARTx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_LPUART_INSTANCE(LPUARTx));
/* Force reset of LPUART peripheral */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_LPUART1);
/* Release reset of LPUART peripheral */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_LPUART1);
return (status);
}
/**
* @brief Initialize LPUART registers according to the specified
* parameters in LPUART_InitStruct.
* @note As some bits in LPUART configuration registers can only be written when the LPUART is disabled (USART_CR1_UE bit =0),
* LPUART IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
* @note Baud rate value stored in LPUART_InitStruct BaudRate field, should be valid (different from 0).
* @param LPUARTx LPUART Instance
* @param LPUART_InitStruct pointer to a @ref LL_LPUART_InitTypeDef structure
* that contains the configuration information for the specified LPUART peripheral.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: LPUART registers are initialized according to LPUART_InitStruct content
* - ERROR: Problem occurred during LPUART Registers initialization
*/
ErrorStatus LL_LPUART_Init(USART_TypeDef *LPUARTx, LL_LPUART_InitTypeDef *LPUART_InitStruct)
{
ErrorStatus status = ERROR;
uint32_t periphclk = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check the parameters */
assert_param(IS_LPUART_INSTANCE(LPUARTx));
assert_param(IS_LL_LPUART_BAUDRATE(LPUART_InitStruct->BaudRate));
assert_param(IS_LL_LPUART_DATAWIDTH(LPUART_InitStruct->DataWidth));
assert_param(IS_LL_LPUART_STOPBITS(LPUART_InitStruct->StopBits));
assert_param(IS_LL_LPUART_PARITY(LPUART_InitStruct->Parity));
assert_param(IS_LL_LPUART_DIRECTION(LPUART_InitStruct->TransferDirection));
assert_param(IS_LL_LPUART_HWCONTROL(LPUART_InitStruct->HardwareFlowControl));
/* LPUART needs to be in disabled state, in order to be able to configure some bits in
CRx registers. Otherwise (LPUART not in Disabled state) => return ERROR */
if (LL_LPUART_IsEnabled(LPUARTx) == 0U)
{
/*---------------------------- LPUART CR1 Configuration -----------------------
* Configure LPUARTx CR1 (LPUART Word Length, Parity and Transfer Direction bits) with parameters:
* - DataWidth: USART_CR1_M bits according to LPUART_InitStruct->DataWidth value
* - Parity: USART_CR1_PCE, USART_CR1_PS bits according to LPUART_InitStruct->Parity value
* - TransferDirection: USART_CR1_TE, USART_CR1_RE bits according to LPUART_InitStruct->TransferDirection value
*/
MODIFY_REG(LPUARTx->CR1,
(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE),
(LPUART_InitStruct->DataWidth | LPUART_InitStruct->Parity | LPUART_InitStruct->TransferDirection));
/*---------------------------- LPUART CR2 Configuration -----------------------
* Configure LPUARTx CR2 (Stop bits) with parameters:
* - Stop Bits: USART_CR2_STOP bits according to LPUART_InitStruct->StopBits value.
*/
LL_LPUART_SetStopBitsLength(LPUARTx, LPUART_InitStruct->StopBits);
/*---------------------------- LPUART CR3 Configuration -----------------------
* Configure LPUARTx CR3 (Hardware Flow Control) with parameters:
* - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to LPUART_InitStruct->HardwareFlowControl value.
*/
LL_LPUART_SetHWFlowCtrl(LPUARTx, LPUART_InitStruct->HardwareFlowControl);
/*---------------------------- LPUART BRR Configuration -----------------------
* Retrieve Clock frequency used for LPUART Peripheral
*/
periphclk = LL_RCC_GetLPUARTClockFreq(LL_RCC_LPUART1_CLKSOURCE);
/* Configure the LPUART Baud Rate :
- valid baud rate value (different from 0) is required
- Peripheral clock as returned by RCC service, should be valid (different from 0).
*/
if ((periphclk != LL_RCC_PERIPH_FREQUENCY_NO)
&& (LPUART_InitStruct->BaudRate != 0U))
{
status = SUCCESS;
LL_LPUART_SetBaudRate(LPUARTx,
periphclk,
LPUART_InitStruct->BaudRate);
}
}
return (status);
}
/**
* @brief Set each @ref LL_LPUART_InitTypeDef field to default value.
* @param LPUART_InitStruct pointer to a @ref LL_LPUART_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_LPUART_StructInit(LL_LPUART_InitTypeDef *LPUART_InitStruct)
{
/* Set LPUART_InitStruct fields to default values */
LPUART_InitStruct->BaudRate = 9600U;
LPUART_InitStruct->DataWidth = LL_LPUART_DATAWIDTH_8B;
LPUART_InitStruct->StopBits = LL_LPUART_STOPBITS_1;
LPUART_InitStruct->Parity = LL_LPUART_PARITY_NONE ;
LPUART_InitStruct->TransferDirection = LL_LPUART_DIRECTION_TX_RX;
LPUART_InitStruct->HardwareFlowControl = LL_LPUART_HWCONTROL_NONE;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined (LPUART1) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_pwr.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief PWR LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_pwr.h"
#include "stm32l0xx_ll_bus.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(PWR)
/** @defgroup PWR_LL PWR
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup PWR_LL_Exported_Functions
* @{
*/
/** @addtogroup PWR_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the PWR registers to their default reset values.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: PWR registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_PWR_DeInit(void)
{
/* Force reset of PWR clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_PWR);
/* Release reset of PWR clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_PWR);
return SUCCESS;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined(PWR) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_pwr.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of PWR LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_PWR_H
#define __STM32L0xx_LL_PWR_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(PWR)
/** @defgroup PWR_LL PWR
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup PWR_LL_Exported_Constants PWR Exported Constants
* @{
*/
/** @defgroup PWR_LL_EC_CLEAR_FLAG Clear Flags Defines
* @brief Flags defines which can be used with LL_PWR_WriteReg function
* @{
*/
#define LL_PWR_CR_CSBF PWR_CR_CSBF /*!< Clear standby flag */
#define LL_PWR_CR_CWUF PWR_CR_CWUF /*!< Clear wakeup flag */
/**
* @}
*/
/** @defgroup PWR_LL_EC_GET_FLAG Get Flags Defines
* @brief Flags defines which can be used with LL_PWR_ReadReg function
* @{
*/
#define LL_PWR_CSR_WUF PWR_CSR_WUF /*!< Wakeup flag */
#define LL_PWR_CSR_SBF PWR_CSR_SBF /*!< Standby flag */
#if defined (PWR_PVD_SUPPORT)
#define LL_PWR_CSR_PVDO PWR_CSR_PVDO /*!< Power voltage detector output flag */
#endif
#if defined (PWR_CSR_VREFINTRDYF)
#define LL_PWR_CSR_VREFINTRDYF PWR_CSR_VREFINTRDYF /*!< VREFINT ready flag */
#endif
#define LL_PWR_CSR_VOSF PWR_CSR_VOSF /*!< Voltage scaling select flag */
#define LL_PWR_CSR_REGLPF PWR_CSR_REGLPF /*!< Regulator low power flag */
#define LL_PWR_CSR_EWUP1 PWR_CSR_EWUP1 /*!< Enable WKUP pin 1 */
#define LL_PWR_CSR_EWUP2 PWR_CSR_EWUP2 /*!< Enable WKUP pin 2 */
#if defined (PWR_CSR_EWUP3)
#define LL_PWR_CSR_EWUP3 PWR_CSR_EWUP3 /*!< Enable WKUP pin 3 */
#endif /* PWR_CSR_EWUP3 */
/**
* @}
*/
/** @defgroup PWR_LL_EC_REGU_VOLTAGE Regulator Voltage
* @{
*/
#define LL_PWR_REGU_VOLTAGE_SCALE1 (PWR_CR_VOS_0) /*!< 1.8V (range 1) */
#define LL_PWR_REGU_VOLTAGE_SCALE2 (PWR_CR_VOS_1) /*!< 1.5V (range 2) */
#define LL_PWR_REGU_VOLTAGE_SCALE3 (PWR_CR_VOS_0 | PWR_CR_VOS_1) /*!< 1.2V (range 3) */
/**
* @}
*/
/** @defgroup PWR_LL_EC_MODE_PWR Mode Power
* @{
*/
#define LL_PWR_MODE_STOP ((uint32_t)0x00000000U) /*!< Enter Stop mode when the CPU enters deepsleep */
#define LL_PWR_MODE_STANDBY (PWR_CR_PDDS) /*!< Enter Standby mode when the CPU enters deepsleep */
/**
* @}
*/
/** @defgroup PWR_LL_EC_REGU_MODE_LP_MODES Regulator Mode In Low Power Modes
* @{
*/
#define LL_PWR_REGU_LPMODES_MAIN ((uint32_t)0x00000000U) /*!< Voltage regulator in main mode during deepsleep/sleep/low-power run mode */
#define LL_PWR_REGU_LPMODES_LOW_POWER (PWR_CR_LPSDSR) /*!< Voltage regulator in low-power mode during deepsleep/sleep/low-power run mode */
/**
* @}
*/
#if defined(PWR_CR_LPDS)
/** @defgroup PWR_LL_EC_REGU_MODE_DS_MODE Regulator Mode In Deep Sleep Mode
* @{
*/
#define LL_PWR_REGU_DSMODE_MAIN ((uint32_t)0x00000000U) /*!< Voltage regulator in main mode during deepsleep mode when PWR_CR_LPSDSR = 0 */
#define LL_PWR_REGU_DSMODE_LOW_POWER (PWR_CR_LPDS) /*!< Voltage regulator in low-power mode during deepsleep mode when PWR_CR_LPSDSR = 0 */
/**
* @}
*/
#endif /* PWR_CR_LPDS */
#if defined (PWR_PVD_SUPPORT)
/** @defgroup PWR_LL_EC_PVDLEVEL Power Voltage Detector Level
* @{
*/
#define LL_PWR_PVDLEVEL_0 (PWR_CR_PLS_LEV0) /*!< Voltage threshold detected by PVD 1.9 V */
#define LL_PWR_PVDLEVEL_1 (PWR_CR_PLS_LEV1) /*!< Voltage threshold detected by PVD 2.1 V */
#define LL_PWR_PVDLEVEL_2 (PWR_CR_PLS_LEV2) /*!< Voltage threshold detected by PVD 2.3 V */
#define LL_PWR_PVDLEVEL_3 (PWR_CR_PLS_LEV3) /*!< Voltage threshold detected by PVD 2.5 V */
#define LL_PWR_PVDLEVEL_4 (PWR_CR_PLS_LEV4) /*!< Voltage threshold detected by PVD 2.7 V */
#define LL_PWR_PVDLEVEL_5 (PWR_CR_PLS_LEV5) /*!< Voltage threshold detected by PVD 2.9 V */
#define LL_PWR_PVDLEVEL_6 (PWR_CR_PLS_LEV6) /*!< Voltage threshold detected by PVD 3.1 V */
#define LL_PWR_PVDLEVEL_7 (PWR_CR_PLS_LEV7) /*!< External input analog voltage (Compare internally to VREFINT) */
/**
* @}
*/
#endif
/** @defgroup PWR_LL_EC_WAKEUP_PIN Wakeup Pins
* @{
*/
#define LL_PWR_WAKEUP_PIN1 (PWR_CSR_EWUP1) /*!< WKUP pin 1 : PA0 */
#define LL_PWR_WAKEUP_PIN2 (PWR_CSR_EWUP2) /*!< WKUP pin 2 : PC13 */
#if defined (PWR_CSR_EWUP3)
#define LL_PWR_WAKEUP_PIN3 (PWR_CSR_EWUP3) /*!< WKUP pin 3 : PE6 or PA2 according to device */
#endif /* PWR_CSR_EWUP3 */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup PWR_LL_Exported_Macros PWR Exported Macros
* @{
*/
/** @defgroup PWR_LL_EM_WRITE_READ Common write and read registers Macros
* @{
*/
/**
* @brief Write a value in PWR register
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_PWR_WriteReg(__REG__, __VALUE__) WRITE_REG(PWR->__REG__, (__VALUE__))
/**
* @brief Read a value in PWR register
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_PWR_ReadReg(__REG__) READ_REG(PWR->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup PWR_LL_Exported_Functions PWR Exported Functions
* @{
*/
/** @defgroup PWR_LL_EF_Configuration Configuration
* @{
*/
/**
* @brief Switch the regulator from main mode to low-power mode
* @rmtoll CR LPRUN LL_PWR_EnableLowPowerRunMode
* @note Remind to set the regulator to low power before enabling
* LowPower run mode (bit @ref LL_PWR_REGU_LPMODES_LOW_POWER).
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnableLowPowerRunMode(void)
{
SET_BIT(PWR->CR, PWR_CR_LPRUN);
}
/**
* @brief Switch the regulator from low-power mode to main mode
* @rmtoll CR LPRUN LL_PWR_DisableLowPowerRunMode
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisableLowPowerRunMode(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_LPRUN);
}
/**
* @brief Check if the regulator is in low-power mode
* @rmtoll CR LPRUN LL_PWR_IsEnabledLowPowerRunMode
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledLowPowerRunMode(void)
{
return (READ_BIT(PWR->CR, PWR_CR_LPRUN) == (PWR_CR_LPRUN));
}
/**
* @brief Set voltage regulator to low-power and switch from
* run main mode to run low-power mode.
* @rmtoll CR LPSDSR LL_PWR_EnterLowPowerRunMode\n
* CR LPRUN LL_PWR_EnterLowPowerRunMode
* @note This "high level" function is introduced to provide functional
* compatibility with other families. Notice that the two registers
* have to be written sequentially, so this function is not atomic.
* To assure atomicity you can call separately the following functions:
* - @ref LL_PWR_SetRegulModeLP(@ref LL_PWR_REGU_LPMODES_LOW_POWER);
* - @ref LL_PWR_EnableLowPowerRunMode();
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnterLowPowerRunMode(void)
{
SET_BIT(PWR->CR, PWR_CR_LPSDSR); /* => LL_PWR_SetRegulModeLP(LL_PWR_REGU_LPMODES_LOW_POWER) */
SET_BIT(PWR->CR, PWR_CR_LPRUN); /* => LL_PWR_EnableLowPowerRunMode() */
}
/**
* @brief Set voltage regulator to main and switch from
* run main mode to low-power mode.
* @rmtoll CR LPSDSR LL_PWR_ExitLowPowerRunMode\n
* CR LPRUN LL_PWR_ExitLowPowerRunMode
* @note This "high level" function is introduced to provide functional
* compatibility with other families. Notice that the two registers
* have to be written sequentially, so this function is not atomic.
* To assure atomicity you can call separately the following functions:
* - @ref LL_PWR_DisableLowPowerRunMode();
* - @ref LL_PWR_SetRegulModeLP(@ref LL_PWR_REGU_LPMODES_MAIN);
* @retval None
*/
__STATIC_INLINE void LL_PWR_ExitLowPowerRunMode(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_LPRUN); /* => LL_PWR_DisableLowPowerRunMode() */
CLEAR_BIT(PWR->CR, PWR_CR_LPSDSR); /* => LL_PWR_SetRegulModeLP(LL_PWR_REGU_LPMODES_MAIN) */
}
/**
* @brief Set the main internal regulator output voltage
* @rmtoll CR VOS LL_PWR_SetRegulVoltageScaling
* @param VoltageScaling This parameter can be one of the following values:
* @arg @ref LL_PWR_REGU_VOLTAGE_SCALE1
* @arg @ref LL_PWR_REGU_VOLTAGE_SCALE2
* @arg @ref LL_PWR_REGU_VOLTAGE_SCALE3
* @retval None
*/
__STATIC_INLINE void LL_PWR_SetRegulVoltageScaling(uint32_t VoltageScaling)
{
MODIFY_REG(PWR->CR, PWR_CR_VOS, VoltageScaling);
}
/**
* @brief Get the main internal regulator output voltage
* @rmtoll CR VOS LL_PWR_GetRegulVoltageScaling
* @retval Returned value can be one of the following values:
* @arg @ref LL_PWR_REGU_VOLTAGE_SCALE1
* @arg @ref LL_PWR_REGU_VOLTAGE_SCALE2
* @arg @ref LL_PWR_REGU_VOLTAGE_SCALE3
*/
__STATIC_INLINE uint32_t LL_PWR_GetRegulVoltageScaling(void)
{
return (uint32_t)(READ_BIT(PWR->CR, PWR_CR_VOS));
}
/**
* @brief Enable access to the backup domain
* @rmtoll CR DBP LL_PWR_EnableBkUpAccess
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnableBkUpAccess(void)
{
SET_BIT(PWR->CR, PWR_CR_DBP);
}
/**
* @brief Disable access to the backup domain
* @rmtoll CR DBP LL_PWR_DisableBkUpAccess
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisableBkUpAccess(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_DBP);
}
/**
* @brief Check if the backup domain is enabled
* @rmtoll CR DBP LL_PWR_IsEnabledBkUpAccess
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledBkUpAccess(void)
{
return (READ_BIT(PWR->CR, PWR_CR_DBP) == (PWR_CR_DBP));
}
/**
* @brief Set voltage regulator mode during low power modes
* @rmtoll CR LPSDSR LL_PWR_SetRegulModeLP
* @param RegulMode This parameter can be one of the following values:
* @arg @ref LL_PWR_REGU_LPMODES_MAIN
* @arg @ref LL_PWR_REGU_LPMODES_LOW_POWER
* @retval None
*/
__STATIC_INLINE void LL_PWR_SetRegulModeLP(uint32_t RegulMode)
{
MODIFY_REG(PWR->CR, PWR_CR_LPSDSR, RegulMode);
}
/**
* @brief Get voltage regulator mode during low power modes
* @rmtoll CR LPSDSR LL_PWR_GetRegulModeLP
* @retval Returned value can be one of the following values:
* @arg @ref LL_PWR_REGU_LPMODES_MAIN
* @arg @ref LL_PWR_REGU_LPMODES_LOW_POWER
*/
__STATIC_INLINE uint32_t LL_PWR_GetRegulModeLP(void)
{
return (uint32_t)(READ_BIT(PWR->CR, PWR_CR_LPSDSR));
}
#if defined(PWR_CR_LPDS)
/**
* @brief Set voltage regulator mode during deep sleep mode
* @rmtoll CR LPDS LL_PWR_SetRegulModeDS
* @param RegulMode This parameter can be one of the following values:
* @arg @ref LL_PWR_REGU_DSMODE_MAIN
* @arg @ref LL_PWR_REGU_DSMODE_LOW_POWER
* @retval None
*/
__STATIC_INLINE void LL_PWR_SetRegulModeDS(uint32_t RegulMode)
{
MODIFY_REG(PWR->CR, PWR_CR_LPDS, RegulMode);
}
/**
* @brief Get voltage regulator mode during deep sleep mode
* @rmtoll CR LPDS LL_PWR_GetRegulModeDS
* @retval Returned value can be one of the following values:
* @arg @ref LL_PWR_REGU_DSMODE_MAIN
* @arg @ref LL_PWR_REGU_DSMODE_LOW_POWER
*/
__STATIC_INLINE uint32_t LL_PWR_GetRegulModeDS(void)
{
return (uint32_t)(READ_BIT(PWR->CR, PWR_CR_LPDS));
}
#endif /* PWR_CR_LPDS */
/**
* @brief Set power down mode when CPU enters deepsleep
* @rmtoll CR PDDS LL_PWR_SetPowerMode
* @param PDMode This parameter can be one of the following values:
* @arg @ref LL_PWR_MODE_STOP
* @arg @ref LL_PWR_MODE_STANDBY
* @note Set the regulator to low power (bit @ref LL_PWR_REGU_LPMODES_LOW_POWER)
* before setting MODE_STOP. If the regulator remains in "main mode",
* it consumes more power without providing any additional feature.
* In MODE_STANDBY the regulator is automatically off.
* @retval None
*/
__STATIC_INLINE void LL_PWR_SetPowerMode(uint32_t PDMode)
{
MODIFY_REG(PWR->CR, PWR_CR_PDDS, PDMode);
}
/**
* @brief Get power down mode when CPU enters deepsleep
* @rmtoll CR PDDS LL_PWR_GetPowerMode
* @retval Returned value can be one of the following values:
* @arg @ref LL_PWR_MODE_STOP
* @arg @ref LL_PWR_MODE_STANDBY
*/
__STATIC_INLINE uint32_t LL_PWR_GetPowerMode(void)
{
return (uint32_t)(READ_BIT(PWR->CR, PWR_CR_PDDS));
}
#if defined (PWR_PVD_SUPPORT)
/**
* @brief Configure the voltage threshold detected by the Power Voltage Detector
* @rmtoll CR PLS LL_PWR_SetPVDLevel
* @param PVDLevel This parameter can be one of the following values:
* @arg @ref LL_PWR_PVDLEVEL_0
* @arg @ref LL_PWR_PVDLEVEL_1
* @arg @ref LL_PWR_PVDLEVEL_2
* @arg @ref LL_PWR_PVDLEVEL_3
* @arg @ref LL_PWR_PVDLEVEL_4
* @arg @ref LL_PWR_PVDLEVEL_5
* @arg @ref LL_PWR_PVDLEVEL_6
* @arg @ref LL_PWR_PVDLEVEL_7
* @retval None
*/
__STATIC_INLINE void LL_PWR_SetPVDLevel(uint32_t PVDLevel)
{
MODIFY_REG(PWR->CR, PWR_CR_PLS, PVDLevel);
}
/**
* @brief Get the voltage threshold detection
* @rmtoll CR PLS LL_PWR_GetPVDLevel
* @retval Returned value can be one of the following values:
* @arg @ref LL_PWR_PVDLEVEL_0
* @arg @ref LL_PWR_PVDLEVEL_1
* @arg @ref LL_PWR_PVDLEVEL_2
* @arg @ref LL_PWR_PVDLEVEL_3
* @arg @ref LL_PWR_PVDLEVEL_4
* @arg @ref LL_PWR_PVDLEVEL_5
* @arg @ref LL_PWR_PVDLEVEL_6
* @arg @ref LL_PWR_PVDLEVEL_7
*/
__STATIC_INLINE uint32_t LL_PWR_GetPVDLevel(void)
{
return (uint32_t)(READ_BIT(PWR->CR, PWR_CR_PLS));
}
/**
* @brief Enable Power Voltage Detector
* @rmtoll CR PVDE LL_PWR_EnablePVD
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnablePVD(void)
{
SET_BIT(PWR->CR, PWR_CR_PVDE);
}
/**
* @brief Disable Power Voltage Detector
* @rmtoll CR PVDE LL_PWR_DisablePVD
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisablePVD(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_PVDE);
}
/**
* @brief Check if Power Voltage Detector is enabled
* @rmtoll CR PVDE LL_PWR_IsEnabledPVD
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledPVD(void)
{
return (READ_BIT(PWR->CR, PWR_CR_PVDE) == (PWR_CR_PVDE));
}
#endif
/**
* @brief Enable the WakeUp PINx functionality
* @rmtoll CSR EWUP1 LL_PWR_EnableWakeUpPin\n
* CSR EWUP2 LL_PWR_EnableWakeUpPin\n
* CSR EWUP3 LL_PWR_EnableWakeUpPin
* @param WakeUpPin This parameter can be one of the following values:
* @arg @ref LL_PWR_WAKEUP_PIN1
* @arg @ref LL_PWR_WAKEUP_PIN2
* @arg @ref LL_PWR_WAKEUP_PIN3 (*)
*
* (*) not available on all devices
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnableWakeUpPin(uint32_t WakeUpPin)
{
SET_BIT(PWR->CSR, WakeUpPin);
}
/**
* @brief Disable the WakeUp PINx functionality
* @rmtoll CSR EWUP1 LL_PWR_DisableWakeUpPin\n
* CSR EWUP2 LL_PWR_DisableWakeUpPin\n
* CSR EWUP3 LL_PWR_DisableWakeUpPin
* @param WakeUpPin This parameter can be one of the following values:
* @arg @ref LL_PWR_WAKEUP_PIN1
* @arg @ref LL_PWR_WAKEUP_PIN2
* @arg @ref LL_PWR_WAKEUP_PIN3 (*)
*
* (*) not available on all devices
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisableWakeUpPin(uint32_t WakeUpPin)
{
CLEAR_BIT(PWR->CSR, WakeUpPin);
}
/**
* @brief Check if the WakeUp PINx functionality is enabled
* @rmtoll CSR EWUP1 LL_PWR_IsEnabledWakeUpPin\n
* CSR EWUP2 LL_PWR_IsEnabledWakeUpPin\n
* CSR EWUP3 LL_PWR_IsEnabledWakeUpPin
* @param WakeUpPin This parameter can be one of the following values:
* @arg @ref LL_PWR_WAKEUP_PIN1
* @arg @ref LL_PWR_WAKEUP_PIN2
* @arg @ref LL_PWR_WAKEUP_PIN3 (*)
*
* (*) not available on all devices
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledWakeUpPin(uint32_t WakeUpPin)
{
return (READ_BIT(PWR->CSR, WakeUpPin) == (WakeUpPin));
}
/**
* @brief Enable ultra low-power mode by enabling VREFINT switch off in low-power modes
* @rmtoll CR ULP LL_PWR_EnableUltraLowPower
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnableUltraLowPower(void)
{
SET_BIT(PWR->CR, PWR_CR_ULP);
}
/**
* @brief Disable ultra low-power mode by disabling VREFINT switch off in low-power modes
* @rmtoll CR ULP LL_PWR_DisableUltraLowPower
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisableUltraLowPower(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_ULP);
}
/**
* @brief Check if ultra low-power mode is enabled by checking if VREFINT switch off in low-power modes is enabled
* @rmtoll CR ULP LL_PWR_IsEnabledUltraLowPower
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledUltraLowPower(void)
{
return (READ_BIT(PWR->CR, PWR_CR_ULP) == (PWR_CR_ULP));
}
/**
* @brief Enable fast wakeup by ignoring VREFINT startup time when exiting from low-power mode
* @rmtoll CR FWU LL_PWR_EnableFastWakeUp
* @note Works in conjunction with ultra low power mode.
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnableFastWakeUp(void)
{
SET_BIT(PWR->CR, PWR_CR_FWU);
}
/**
* @brief Disable fast wakeup by waiting VREFINT startup time when exiting from low-power mode
* @rmtoll CR FWU LL_PWR_DisableFastWakeUp
* @note Works in conjunction with ultra low power mode.
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisableFastWakeUp(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_FWU);
}
/**
* @brief Check if fast wakeup is enabled by checking if VREFINT startup time when exiting from low-power mode is ignored
* @rmtoll CR FWU LL_PWR_IsEnabledFastWakeUp
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledFastWakeUp(void)
{
return (READ_BIT(PWR->CR, PWR_CR_FWU) == (PWR_CR_FWU));
}
/**
* @brief Enable non-volatile memory (Flash and EEPROM) keeping off feature when exiting from low-power mode
* @rmtoll CR DS_EE_KOFF LL_PWR_EnableNVMKeptOff
* @note When enabled, after entering low-power mode (Stop or Standby only), if RUN_PD of FLASH_ACR register
* is also set, the Flash memory will not be woken up when exiting from deepsleep mode.
* When enabled, the EEPROM will not be woken up when exiting from low-power mode (if the bit RUN_PD is set)
* @retval None
*/
__STATIC_INLINE void LL_PWR_EnableNVMKeptOff(void)
{
SET_BIT(PWR->CR, PWR_CR_DSEEKOFF);
}
/**
* @brief Disable non-volatile memory (Flash and EEPROM) keeping off feature when exiting from low-power mode
* @rmtoll CR DS_EE_KOFF LL_PWR_DisableNVMKeptOff
* @note When disabled, Flash memory is woken up when exiting from deepsleep mode even if the bit RUN_PD is set
* @retval None
*/
__STATIC_INLINE void LL_PWR_DisableNVMKeptOff(void)
{
CLEAR_BIT(PWR->CR, PWR_CR_DSEEKOFF);
}
/**
* @brief Check if non-volatile memory (Flash and EEPROM) keeping off feature when exiting from low-power mode is enabled
* @rmtoll CR DS_EE_KOFF LL_PWR_IsEnabledNVMKeptOff
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsEnabledNVMKeptOff(void)
{
return (READ_BIT(PWR->CR, PWR_CR_DSEEKOFF) == (PWR_CR_DSEEKOFF));
}
/**
* @}
*/
/** @defgroup PWR_LL_EF_FLAG_Management FLAG_Management
* @{
*/
/**
* @brief Get Wake-up Flag
* @rmtoll CSR WUF LL_PWR_IsActiveFlag_WU
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsActiveFlag_WU(void)
{
return (READ_BIT(PWR->CSR, PWR_CSR_WUF) == (PWR_CSR_WUF));
}
/**
* @brief Get Standby Flag
* @rmtoll CSR SBF LL_PWR_IsActiveFlag_SB
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsActiveFlag_SB(void)
{
return (READ_BIT(PWR->CSR, PWR_CSR_SBF) == (PWR_CSR_SBF));
}
#if defined (PWR_PVD_SUPPORT)
/**
* @brief Indicate whether VDD voltage is below the selected PVD threshold
* @rmtoll CSR PVDO LL_PWR_IsActiveFlag_PVDO
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsActiveFlag_PVDO(void)
{
return (READ_BIT(PWR->CSR, PWR_CSR_PVDO) == (PWR_CSR_PVDO));
}
#endif
#if defined (PWR_CSR_VREFINTRDYF)
/**
* @brief Get Internal Reference VrefInt Flag
* @rmtoll CSR VREFINTRDYF LL_PWR_IsActiveFlag_VREFINTRDY
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsActiveFlag_VREFINTRDY(void)
{
return (READ_BIT(PWR->CSR, PWR_CSR_VREFINTRDYF) == (PWR_CSR_VREFINTRDYF));
}
#endif
/**
* @brief Indicate whether the regulator is ready in the selected voltage range or if its output voltage is still changing to the required voltage level
* @rmtoll CSR VOSF LL_PWR_IsActiveFlag_VOSF
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsActiveFlag_VOSF(void)
{
return (READ_BIT(PWR->CSR, PWR_CSR_VOSF) == (PWR_CSR_VOSF));
}
/**
* @brief Indicate whether the regulator is ready in main mode or is in low-power mode
* @rmtoll CSR REGLPF LL_PWR_IsActiveFlag_REGLPF
* @note Take care, return value "0" means the regulator is ready. Return value "1" means the output voltage range is still changing.
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_PWR_IsActiveFlag_REGLPF(void)
{
return (READ_BIT(PWR->CSR, PWR_CSR_REGLPF) == (PWR_CSR_REGLPF));
}
/**
* @brief Clear Standby Flag
* @rmtoll CR CSBF LL_PWR_ClearFlag_SB
* @retval None
*/
__STATIC_INLINE void LL_PWR_ClearFlag_SB(void)
{
SET_BIT(PWR->CR, PWR_CR_CSBF);
}
/**
* @brief Clear Wake-up Flags
* @rmtoll CR CWUF LL_PWR_ClearFlag_WU
* @retval None
*/
__STATIC_INLINE void LL_PWR_ClearFlag_WU(void)
{
SET_BIT(PWR->CR, PWR_CR_CWUF);
}
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup PWR_LL_EF_Init De-initialization function
* @{
*/
ErrorStatus LL_PWR_DeInit(void);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined(PWR) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_PWR_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_rcc.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief RCC LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_rcc.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(RCC)
/** @defgroup RCC_LL RCC
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup RCC_LL_Private_Macros
* @{
*/
#if defined(RCC_CCIPR_USART1SEL) && defined(RCC_CCIPR_USART2SEL)
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_USART2_CLKSOURCE))
#elif defined(RCC_CCIPR_USART1SEL) && !defined(RCC_CCIPR_USART2SEL)
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE))
#else
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART2_CLKSOURCE))
#endif /* RCC_CCIPR_USART1SEL && RCC_CCIPR_USART2SEL */
#define IS_LL_RCC_LPUART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_LPUART1_CLKSOURCE))
#if defined(RCC_CCIPR_I2C3SEL)
#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2C1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_I2C3_CLKSOURCE))
#else
#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) ((__VALUE__) == LL_RCC_I2C1_CLKSOURCE)
#endif /* RCC_CCIPR_I2C3SEL */
#define IS_LL_RCC_LPTIM_CLKSOURCE(__VALUE__) ((__VALUE__) == LL_RCC_LPTIM1_CLKSOURCE)
#if defined(USB)
#define IS_LL_RCC_USB_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USB_CLKSOURCE))
#endif /* USB */
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup RCC_LL_Private_Functions RCC Private functions
* @{
*/
uint32_t RCC_GetSystemClockFreq(void);
uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);
uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);
uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency);
uint32_t RCC_PLL_GetFreqDomain_SYS(void);
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup RCC_LL_Exported_Functions
* @{
*/
/** @addtogroup RCC_LL_EF_Init
* @{
*/
/**
* @brief Reset the RCC clock configuration to the default reset state.
* @note The default reset state of the clock configuration is given below:
* - MSI ON and used as system clock source
* - HSE, HSI and PLL OFF
* - AHB, APB1 and APB2 prescaler set to 1.
* - CSS, MCO OFF
* - All interrupts disabled
* @note This function doesn't modify the configuration of the
* - Peripheral clocks
* - LSI, LSE and RTC clocks
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RCC registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_RCC_DeInit(void)
{
uint32_t vl_mask = 0U;
/* Set MSION bit */
LL_RCC_MSI_Enable();
/* Insure MSIRDY bit is set before writing default MSIRANGE value */
while (LL_RCC_MSI_IsReady() == 0U)
{
__NOP();
}
/* Set MSIRANGE default value */
LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_5);
/* Set MSITRIM bits to the reset value*/
LL_RCC_MSI_SetCalibTrimming(0U);
/* Set HSITRIM bits to the reset value*/
LL_RCC_HSI_SetCalibTrimming(0x10U);
/* Reset SW, HPRE, PPRE and MCOSEL bits */
vl_mask = 0xFFFFFFFFU;
CLEAR_BIT(vl_mask, (RCC_CFGR_SW | RCC_CFGR_HPRE | RCC_CFGR_PPRE1 | RCC_CFGR_PPRE2 | RCC_CFGR_MCOSEL));
LL_RCC_WriteReg(CFGR, vl_mask);
/* Reset HSI, HSE, PLL */
vl_mask = LL_RCC_ReadReg(CR);
#if defined(RCC_CR_HSIOUTEN)
CLEAR_BIT(vl_mask, RCC_CR_HSION| RCC_CR_HSIKERON| RCC_CR_HSIDIVEN | RCC_CR_HSIOUTEN | \
RCC_CR_HSEON | RCC_CR_PLLON);
#else
CLEAR_BIT(vl_mask, RCC_CR_HSION| RCC_CR_HSIKERON| RCC_CR_HSIDIVEN | \
RCC_CR_HSEON | RCC_CR_PLLON);
#endif
LL_RCC_WriteReg(CR, vl_mask);
/* Delay after an RCC peripheral clock */
vl_mask = LL_RCC_ReadReg(CR);
/* Reset HSEBYP bit */
LL_RCC_HSE_DisableBypass();
/* Set RCC_CR_RTCPRE to 0b00*/
CLEAR_BIT(vl_mask, RCC_CR_RTCPRE);
LL_RCC_WriteReg(CR, vl_mask);
/* Reset CFGR register */
LL_RCC_WriteReg(CFGR, 0x00000000U);
#if defined(RCC_HSI48_SUPPORT)
/* Reset CRRCR register */
LL_RCC_WriteReg(CRRCR, 0x00000000U);
/* Disable HSI48 */
LL_RCC_HSI48_Disable();
#endif /*RCC_HSI48_SUPPORT*/
/* Disable all interrupts */
LL_RCC_WriteReg(CIER, 0x00000000U);
return SUCCESS;
}
/**
* @}
*/
/** @addtogroup RCC_LL_EF_Get_Freq
* @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks
* and different peripheral clocks available on the device.
* @note If SYSCLK source is MSI, function returns values based on MSI clock(*)
* @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(**)
* @note If SYSCLK source is HSE, function returns values based on HSE_VALUE(***)
* @note If SYSCLK source is PLL, function returns values based on
* HSI_VALUE(**) or HSE_VALUE(***) multiplied/divided by the PLL factors.
* @note (*) MSI clock depends on the selected MSI range but the real value
* may vary depending on the variations in voltage and temperature.
* @note (**) HSI_VALUE is a defined constant but the real value may vary
* depending on the variations in voltage and temperature.
* @note (***) HSE_VALUE is a defined constant, user has to ensure that
* HSE_VALUE is same as the real frequency of the crystal used.
* Otherwise, this function may have wrong result.
* @note The result of this function could be incorrect when using fractional
* value for HSE crystal.
* @note This function can be used by the user application to compute the
* baud-rate for the communication peripherals or configure other parameters.
* @{
*/
/**
* @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks
* @note Each time SYSCLK, HCLK, PCLK1 and/or PCLK2 clock changes, this function
* must be called to update structure fields. Otherwise, any
* configuration based on this function will be incorrect.
* @param RCC_Clocks pointer to a @ref LL_RCC_ClocksTypeDef structure which will hold the clocks frequencies
* @retval None
*/
void LL_RCC_GetSystemClocksFreq(LL_RCC_ClocksTypeDef *RCC_Clocks)
{
/* Get SYSCLK frequency */
RCC_Clocks->SYSCLK_Frequency = RCC_GetSystemClockFreq();
/* HCLK clock frequency */
RCC_Clocks->HCLK_Frequency = RCC_GetHCLKClockFreq(RCC_Clocks->SYSCLK_Frequency);
/* PCLK1 clock frequency */
RCC_Clocks->PCLK1_Frequency = RCC_GetPCLK1ClockFreq(RCC_Clocks->HCLK_Frequency);
/* PCLK2 clock frequency */
RCC_Clocks->PCLK2_Frequency = RCC_GetPCLK2ClockFreq(RCC_Clocks->HCLK_Frequency);
}
/**
* @brief Return USARTx clock frequency
* @param USARTxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_USART1_CLKSOURCE
* @arg @ref LL_RCC_USART2_CLKSOURCE (*)
*
* (*) value not defined in all devices.
* @retval USART clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetUSARTClockFreq(uint32_t USARTxSource)
{
uint32_t usart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_USART_CLKSOURCE(USARTxSource));
#if defined(RCC_CCIPR_USART1SEL)
if (USARTxSource == LL_RCC_USART1_CLKSOURCE)
{
/* USART1CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART1_CLKSOURCE_SYSCLK: /* USART1 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART1_CLKSOURCE_HSI: /* USART1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART1_CLKSOURCE_LSE: /* USART1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART1_CLKSOURCE_PCLK2: /* USART1 Clock is PCLK2 */
default:
usart_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#endif /* RCC_CCIPR_USART1SEL */
#if defined(RCC_CCIPR_USART2SEL)
if (USARTxSource == LL_RCC_USART2_CLKSOURCE)
{
/* USART2CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART2_CLKSOURCE_SYSCLK: /* USART2 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART2_CLKSOURCE_HSI: /* USART2 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART2_CLKSOURCE_LSE: /* USART2 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART2_CLKSOURCE_PCLK1: /* USART2 Clock is PCLK1 */
default:
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#endif /* RCC_CCIPR_USART2SEL */
return usart_frequency;
}
/**
* @brief Return I2Cx clock frequency
* @param I2CxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_I2C1_CLKSOURCE
* @arg @ref LL_RCC_I2C3_CLKSOURCE (*)
*
* (*) value not defined in all devices
* @retval I2C clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that HSI oscillator is not ready
*/
uint32_t LL_RCC_GetI2CClockFreq(uint32_t I2CxSource)
{
uint32_t i2c_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_I2C_CLKSOURCE(I2CxSource));
/* I2C1 CLK clock frequency */
if (I2CxSource == LL_RCC_I2C1_CLKSOURCE)
{
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C1_CLKSOURCE_SYSCLK: /* I2C1 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C1_CLKSOURCE_HSI: /* I2C1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C1_CLKSOURCE_PCLK1: /* I2C1 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#if defined(RCC_CCIPR_I2C3SEL)
/* I2C3 CLK clock frequency */
if (I2CxSource == LL_RCC_I2C3_CLKSOURCE)
{
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C3_CLKSOURCE_SYSCLK: /* I2C3 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C3_CLKSOURCE_HSI: /* I2C3 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C3_CLKSOURCE_PCLK1: /* I2C3 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#endif /*RCC_CCIPR_I2C3SEL*/
return i2c_frequency;
}
/**
* @brief Return LPUARTx clock frequency
* @param LPUARTxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_LPUART1_CLKSOURCE
* @retval LPUART clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetLPUARTClockFreq(uint32_t LPUARTxSource)
{
uint32_t lpuart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_LPUART_CLKSOURCE(LPUARTxSource));
/* LPUART1CLK clock frequency */
switch (LL_RCC_GetLPUARTClockSource(LPUARTxSource))
{
case LL_RCC_LPUART1_CLKSOURCE_SYSCLK: /* LPUART1 Clock is System Clock */
lpuart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_LPUART1_CLKSOURCE_HSI: /* LPUART1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
lpuart_frequency = HSI_VALUE;
}
break;
case LL_RCC_LPUART1_CLKSOURCE_LSE: /* LPUART1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
lpuart_frequency = LSE_VALUE;
}
break;
case LL_RCC_LPUART1_CLKSOURCE_PCLK1: /* LPUART1 Clock is PCLK1 */
default:
lpuart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
return lpuart_frequency;
}
/**
* @brief Return LPTIMx clock frequency
* @param LPTIMxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_LPTIM1_CLKSOURCE
* @retval LPTIM clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetLPTIMClockFreq(uint32_t LPTIMxSource)
{
uint32_t lptim_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_LPTIM_CLKSOURCE(LPTIMxSource));
if (LPTIMxSource == LL_RCC_LPTIM1_CLKSOURCE)
{
/* LPTIM1CLK clock frequency */
switch (LL_RCC_GetLPTIMClockSource(LPTIMxSource))
{
case LL_RCC_LPTIM1_CLKSOURCE_LSI: /* LPTIM1 Clock is LSI Osc. */
if (LL_RCC_LSI_IsReady())
{
lptim_frequency = LSI_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_HSI: /* LPTIM1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
lptim_frequency = HSI_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_LSE: /* LPTIM1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
lptim_frequency = LSE_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_PCLK1: /* LPTIM1 Clock is PCLK1 */
default:
lptim_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
return lptim_frequency;
}
#if defined(USB)
/**
* @brief Return USBx clock frequency
* @param USBxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_USB_CLKSOURCE
* @retval USB clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI48) or PLL is not ready
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that no clock source selected
*/
uint32_t LL_RCC_GetUSBClockFreq(uint32_t USBxSource)
{
uint32_t usb_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_USB_CLKSOURCE(USBxSource));
/* USBCLK clock frequency */
switch (LL_RCC_GetUSBClockSource(USBxSource))
{
case LL_RCC_USB_CLKSOURCE_PLL: /* PLL clock used as USB clock source */
if (LL_RCC_PLL_IsReady())
{
usb_frequency = RCC_PLL_GetFreqDomain_SYS();
}
break;
case LL_RCC_USB_CLKSOURCE_HSI48: /* HSI48 clock used as USB clock source */
default:
if (LL_RCC_HSI48_IsReady())
{
usb_frequency = HSI48_VALUE;
}
break;
}
return usb_frequency;
}
#endif /* USB */
/**
* @}
*/
/**
* @}
*/
/** @addtogroup RCC_LL_Private_Functions
* @{
*/
/**
* @brief Return SYSTEM clock frequency
* @retval SYSTEM clock frequency (in Hz)
*/
uint32_t RCC_GetSystemClockFreq(void)
{
uint32_t frequency = 0U;
/* Get SYSCLK source -------------------------------------------------------*/
switch (LL_RCC_GetSysClkSource())
{
case LL_RCC_SYS_CLKSOURCE_STATUS_MSI: /* MSI used as system clock source */
frequency = __LL_RCC_CALC_MSI_FREQ(LL_RCC_MSI_GetRange());
break;
case LL_RCC_SYS_CLKSOURCE_STATUS_HSI: /* HSI used as system clock source */
frequency = HSI_VALUE;
break;
case LL_RCC_SYS_CLKSOURCE_STATUS_HSE: /* HSE used as system clock source */
frequency = HSE_VALUE;
break;
case LL_RCC_SYS_CLKSOURCE_STATUS_PLL: /* PLL used as system clock source */
frequency = RCC_PLL_GetFreqDomain_SYS();
break;
default:
frequency = __LL_RCC_CALC_MSI_FREQ(LL_RCC_MSI_GetRange());
break;
}
return frequency;
}
/**
* @brief Return HCLK clock frequency
* @param SYSCLK_Frequency SYSCLK clock frequency
* @retval HCLK clock frequency (in Hz)
*/
uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency)
{
/* HCLK clock frequency */
return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());
}
/**
* @brief Return PCLK1 clock frequency
* @param HCLK_Frequency HCLK clock frequency
* @retval PCLK1 clock frequency (in Hz)
*/
uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency)
{
/* PCLK1 clock frequency */
return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler());
}
/**
* @brief Return PCLK2 clock frequency
* @param HCLK_Frequency HCLK clock frequency
* @retval PCLK2 clock frequency (in Hz)
*/
uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency)
{
/* PCLK2 clock frequency */
return __LL_RCC_CALC_PCLK2_FREQ(HCLK_Frequency, LL_RCC_GetAPB2Prescaler());
}
/**
* @brief Return PLL clock frequency used for system domain
* @retval PLL clock frequency (in Hz)
*/
uint32_t RCC_PLL_GetFreqDomain_SYS(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL divider) * PLL Multiplicator */
/* Get PLL source */
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLL clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLCLK_FREQ(pllinputfreq, LL_RCC_PLL_GetMultiplicator(), LL_RCC_PLL_GetDivider());
}
/**
* @}
*/
/**
* @}
*/
#endif /* defined(RCC) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_rng.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief RNG LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_rng.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (RNG)
/** @addtogroup RNG_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup RNG_LL_Exported_Functions
* @{
*/
/** @addtogroup RNG_LL_EF_Init
* @{
*/
/**
* @brief De-initialize RNG registers (Registers restored to their default values).
* @param RNGx RNG Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RNG registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx)
{
/* Check the parameters */
assert_param(IS_RNG_ALL_INSTANCE(RNGx));
/* Enable RNG reset state */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_RNG);
/* Release RNG from reset state */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_RNG);
return (SUCCESS);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined (RNG) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_rng.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of RNG LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_RNG_H
#define __STM32L0xx_LL_RNG_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(RNG)
/** @defgroup RNG_LL RNG
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup RNG_LL_Exported_Constants RNG Exported Constants
* @{
*/
/** @defgroup RNG_LL_EC_GET_FLAG Get Flags Defines
* @brief Flags defines which can be used with LL_RNG_ReadReg function
* @{
*/
#define LL_RNG_SR_DRDY RNG_SR_DRDY /*!< Register contains valid random data */
#define LL_RNG_SR_CECS RNG_SR_CECS /*!< Clock error current status */
#define LL_RNG_SR_SECS RNG_SR_SECS /*!< Seed error current status */
#define LL_RNG_SR_CEIS RNG_SR_CEIS /*!< Clock error interrupt status */
#define LL_RNG_SR_SEIS RNG_SR_SEIS /*!< Seed error interrupt status */
/**
* @}
*/
/** @defgroup RNG_LL_EC_IT IT Defines
* @brief IT defines which can be used with LL_RNG_ReadReg and LL_RNG_WriteReg macros
* @{
*/
#define LL_RNG_CR_IE RNG_CR_IE /*!< RNG Interrupt enable */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup RNG_LL_Exported_Macros RNG Exported Macros
* @{
*/
/** @defgroup RNG_LL_EM_WRITE_READ Common Write and read registers Macros
* @{
*/
/**
* @brief Write a value in RNG register
* @param __INSTANCE__ RNG Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_RNG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in RNG register
* @param __INSTANCE__ RNG Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_RNG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup RNG_LL_Exported_Functions RNG Exported Functions
* @{
*/
/** @defgroup RNG_LL_EF_Configuration RNG Configuration functions
* @{
*/
/**
* @brief Enable Random Number Generation
* @rmtoll CR RNGEN LL_RNG_Enable
* @param RNGx RNG Instance
* @retval None
*/
__STATIC_INLINE void LL_RNG_Enable(RNG_TypeDef *RNGx)
{
SET_BIT(RNGx->CR, RNG_CR_RNGEN);
}
/**
* @brief Disable Random Number Generation
* @rmtoll CR RNGEN LL_RNG_Disable
* @param RNGx RNG Instance
* @retval None
*/
__STATIC_INLINE void LL_RNG_Disable(RNG_TypeDef *RNGx)
{
CLEAR_BIT(RNGx->CR, RNG_CR_RNGEN);
}
/**
* @brief Check if Random Number Generator is enabled
* @rmtoll CR RNGEN LL_RNG_IsEnabled
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsEnabled(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->CR, RNG_CR_RNGEN) == (RNG_CR_RNGEN));
}
/**
* @}
*/
/** @defgroup RNG_LL_EF_FLAG_Management FLAG Management
* @{
*/
/**
* @brief Indicate if the RNG Data ready Flag is set or not
* @rmtoll SR DRDY LL_RNG_IsActiveFlag_DRDY
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsActiveFlag_DRDY(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->SR, RNG_SR_DRDY) == (RNG_SR_DRDY));
}
/**
* @brief Indicate if the Clock Error Current Status Flag is set or not
* @rmtoll SR CECS LL_RNG_IsActiveFlag_CECS
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsActiveFlag_CECS(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->SR, RNG_SR_CECS) == (RNG_SR_CECS));
}
/**
* @brief Indicate if the Seed Error Current Status Flag is set or not
* @rmtoll SR SECS LL_RNG_IsActiveFlag_SECS
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsActiveFlag_SECS(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->SR, RNG_SR_SECS) == (RNG_SR_SECS));
}
/**
* @brief Indicate if the Clock Error Interrupt Status Flag is set or not
* @rmtoll SR CEIS LL_RNG_IsActiveFlag_CEIS
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsActiveFlag_CEIS(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->SR, RNG_SR_CEIS) == (RNG_SR_CEIS));
}
/**
* @brief Indicate if the Seed Error Interrupt Status Flag is set or not
* @rmtoll SR SEIS LL_RNG_IsActiveFlag_SEIS
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsActiveFlag_SEIS(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->SR, RNG_SR_SEIS) == (RNG_SR_SEIS));
}
/**
* @brief Clear Clock Error interrupt Status (CEIS) Flag
* @rmtoll SR CEIS LL_RNG_ClearFlag_CEIS
* @param RNGx RNG Instance
* @retval None
*/
__STATIC_INLINE void LL_RNG_ClearFlag_CEIS(RNG_TypeDef *RNGx)
{
WRITE_REG(RNGx->SR, ~RNG_SR_CEIS);
}
/**
* @brief Clear Seed Error interrupt Status (SEIS) Flag
* @rmtoll SR SEIS LL_RNG_ClearFlag_SEIS
* @param RNGx RNG Instance
* @retval None
*/
__STATIC_INLINE void LL_RNG_ClearFlag_SEIS(RNG_TypeDef *RNGx)
{
WRITE_REG(RNGx->SR, ~RNG_SR_SEIS);
}
/**
* @}
*/
/** @defgroup RNG_LL_EF_IT_Management IT Management
* @{
*/
/**
* @brief Enable Random Number Generator Interrupt
* (applies for either Seed error, Clock Error or Data ready interrupts)
* @rmtoll CR IE LL_RNG_EnableIT
* @param RNGx RNG Instance
* @retval None
*/
__STATIC_INLINE void LL_RNG_EnableIT(RNG_TypeDef *RNGx)
{
SET_BIT(RNGx->CR, RNG_CR_IE);
}
/**
* @brief Disable Random Number Generator Interrupt
* (applies for either Seed error, Clock Error or Data ready interrupts)
* @rmtoll CR IE LL_RNG_DisableIT
* @param RNGx RNG Instance
* @retval None
*/
__STATIC_INLINE void LL_RNG_DisableIT(RNG_TypeDef *RNGx)
{
CLEAR_BIT(RNGx->CR, RNG_CR_IE);
}
/**
* @brief Check if Random Number Generator Interrupt is enabled
* (applies for either Seed error, Clock Error or Data ready interrupts)
* @rmtoll CR IE LL_RNG_IsEnabledIT
* @param RNGx RNG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_RNG_IsEnabledIT(RNG_TypeDef *RNGx)
{
return (READ_BIT(RNGx->CR, RNG_CR_IE) == (RNG_CR_IE));
}
/**
* @}
*/
/** @defgroup RNG_LL_EF_Data_Management Data Management
* @{
*/
/**
* @brief Return32-bit Random Number value
* @rmtoll DR RNDATA LL_RNG_ReadRandData32
* @param RNGx RNG Instance
* @retval Generated 32-bit random value
*/
__STATIC_INLINE uint32_t LL_RNG_ReadRandData32(RNG_TypeDef *RNGx)
{
return (uint32_t)(READ_REG(RNGx->DR));
}
/**
* @}
*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup RNG_LL_EF_Init Initialization and de-initialization functions
* @{
*/
ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx);
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/**
* @}
*/
/**
* @}
*/
#endif /* defined(RNG) */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_RNG_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_ll_rtc.c Normal file
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@ -0,0 +1,897 @@
/**
******************************************************************************
* @file stm32l0xx_ll_rtc.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief RTC LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_rtc.h"
#include "stm32l0xx_ll_cortex.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined(RTC)
/** @addtogroup RTC_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @addtogroup RTC_LL_Private_Constants
* @{
*/
/* Default values used for prescaler */
#define RTC_ASYNCH_PRESC_DEFAULT ((uint32_t) 0x0000007FU)
#define RTC_SYNCH_PRESC_DEFAULT ((uint32_t) 0x000000FFU)
/* Values used for timeout */
#define RTC_INITMODE_TIMEOUT ((uint32_t) 1000U) /* 1s when tick set to 1ms */
#define RTC_SYNCHRO_TIMEOUT ((uint32_t) 1000U) /* 1s when tick set to 1ms */
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup RTC_LL_Private_Macros
* @{
*/
#define IS_LL_RTC_HOURFORMAT(__VALUE__) (((__VALUE__) == LL_RTC_HOURFORMAT_24HOUR) \
|| ((__VALUE__) == LL_RTC_HOURFORMAT_AMPM))
#define IS_LL_RTC_ASYNCH_PREDIV(__VALUE__) ((__VALUE__) <= (uint32_t)0x7FU)
#define IS_LL_RTC_SYNCH_PREDIV(__VALUE__) ((__VALUE__) <= (uint32_t)0x7FFFU)
#define IS_LL_RTC_FORMAT(__VALUE__) (((__VALUE__) == LL_RTC_FORMAT_BIN) \
|| ((__VALUE__) == LL_RTC_FORMAT_BCD))
#define IS_LL_RTC_TIME_FORMAT(__VALUE__) (((__VALUE__) == LL_RTC_TIME_FORMAT_AM_OR_24) \
|| ((__VALUE__) == LL_RTC_TIME_FORMAT_PM))
#define IS_LL_RTC_HOUR12(__HOUR__) (((__HOUR__) > 0U) && ((__HOUR__) <= 12U))
#define IS_LL_RTC_HOUR24(__HOUR__) ((__HOUR__) <= 23U)
#define IS_LL_RTC_MINUTES(__MINUTES__) ((__MINUTES__) <= 59U)
#define IS_LL_RTC_SECONDS(__SECONDS__) ((__SECONDS__) <= 59U)
#define IS_LL_RTC_WEEKDAY(__VALUE__) (((__VALUE__) == LL_RTC_WEEKDAY_MONDAY) \
|| ((__VALUE__) == LL_RTC_WEEKDAY_TUESDAY) \
|| ((__VALUE__) == LL_RTC_WEEKDAY_WEDNESDAY) \
|| ((__VALUE__) == LL_RTC_WEEKDAY_THURSDAY) \
|| ((__VALUE__) == LL_RTC_WEEKDAY_FRIDAY) \
|| ((__VALUE__) == LL_RTC_WEEKDAY_SATURDAY) \
|| ((__VALUE__) == LL_RTC_WEEKDAY_SUNDAY))
#define IS_LL_RTC_DAY(__DAY__) (((__DAY__) >= (uint32_t)1U) && ((__DAY__) <= (uint32_t)31U))
#define IS_LL_RTC_MONTH(__VALUE__) (((__VALUE__) == LL_RTC_MONTH_JANUARY) \
|| ((__VALUE__) == LL_RTC_MONTH_FEBRUARY) \
|| ((__VALUE__) == LL_RTC_MONTH_MARCH) \
|| ((__VALUE__) == LL_RTC_MONTH_APRIL) \
|| ((__VALUE__) == LL_RTC_MONTH_MAY) \
|| ((__VALUE__) == LL_RTC_MONTH_JUNE) \
|| ((__VALUE__) == LL_RTC_MONTH_JULY) \
|| ((__VALUE__) == LL_RTC_MONTH_AUGUST) \
|| ((__VALUE__) == LL_RTC_MONTH_SEPTEMBER) \
|| ((__VALUE__) == LL_RTC_MONTH_OCTOBER) \
|| ((__VALUE__) == LL_RTC_MONTH_NOVEMBER) \
|| ((__VALUE__) == LL_RTC_MONTH_DECEMBER))
#define IS_LL_RTC_YEAR(__YEAR__) ((__YEAR__) <= 99U)
#define IS_LL_RTC_ALMA_MASK(__VALUE__) (((__VALUE__) == LL_RTC_ALMA_MASK_NONE) \
|| ((__VALUE__) == LL_RTC_ALMA_MASK_DATEWEEKDAY) \
|| ((__VALUE__) == LL_RTC_ALMA_MASK_HOURS) \
|| ((__VALUE__) == LL_RTC_ALMA_MASK_MINUTES) \
|| ((__VALUE__) == LL_RTC_ALMA_MASK_SECONDS) \
|| ((__VALUE__) == LL_RTC_ALMA_MASK_ALL))
#define IS_LL_RTC_ALMB_MASK(__VALUE__) (((__VALUE__) == LL_RTC_ALMB_MASK_NONE) \
|| ((__VALUE__) == LL_RTC_ALMB_MASK_DATEWEEKDAY) \
|| ((__VALUE__) == LL_RTC_ALMB_MASK_HOURS) \
|| ((__VALUE__) == LL_RTC_ALMB_MASK_MINUTES) \
|| ((__VALUE__) == LL_RTC_ALMB_MASK_SECONDS) \
|| ((__VALUE__) == LL_RTC_ALMB_MASK_ALL))
#define IS_LL_RTC_ALMA_DATE_WEEKDAY_SEL(__SEL__) (((__SEL__) == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE) || \
((__SEL__) == LL_RTC_ALMA_DATEWEEKDAYSEL_WEEKDAY))
#define IS_LL_RTC_ALMB_DATE_WEEKDAY_SEL(__SEL__) (((__SEL__) == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE) || \
((__SEL__) == LL_RTC_ALMB_DATEWEEKDAYSEL_WEEKDAY))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup RTC_LL_Exported_Functions
* @{
*/
/** @addtogroup RTC_LL_EF_Init
* @{
*/
/**
* @brief De-Initializes the RTC registers to their default reset values.
* @note This function doesn't reset the RTC Clock source and RTC Backup Data
* registers.
* @param RTCx RTC Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC registers are de-initialized
* - ERROR: RTC registers are not de-initialized
*/
ErrorStatus LL_RTC_DeInit(RTC_TypeDef *RTCx)
{
ErrorStatus status = ERROR;
/* Check the parameter */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
/* Disable the write protection for RTC registers */
LL_RTC_DisableWriteProtection(RTCx);
/* Set Initialization mode */
if (LL_RTC_EnterInitMode(RTCx) != ERROR)
{
/* Reset TR, DR and CR registers */
LL_RTC_WriteReg(RTCx, TR, 0x00000000U);
#if defined(RTC_WAKEUP_SUPPORT)
LL_RTC_WriteReg(RTCx, WUTR, RTC_WUTR_WUT);
#endif /* RTC_WAKEUP_SUPPORT */
LL_RTC_WriteReg(RTCx, DR , (RTC_DR_WDU_0 | RTC_DR_MU_0 | RTC_DR_DU_0));
/* Reset All CR bits except CR[2:0] */
#if defined(RTC_WAKEUP_SUPPORT)
LL_RTC_WriteReg(RTCx, CR, (LL_RTC_ReadReg(RTCx, CR) & RTC_CR_WUCKSEL));
#else
LL_RTC_WriteReg(RTCx, CR, 0x00000000U);
#endif /* RTC_WAKEUP_SUPPORT */
LL_RTC_WriteReg(RTCx, PRER, (RTC_PRER_PREDIV_A | RTC_SYNCH_PRESC_DEFAULT));
LL_RTC_WriteReg(RTCx, ALRMAR, 0x00000000U);
LL_RTC_WriteReg(RTCx, ALRMBR, 0x00000000U);
LL_RTC_WriteReg(RTCx, SHIFTR, 0x00000000U);
LL_RTC_WriteReg(RTCx, CALR, 0x00000000U);
LL_RTC_WriteReg(RTCx, ALRMASSR, 0x00000000U);
LL_RTC_WriteReg(RTCx, ALRMBSSR, 0x00000000U);
/* Reset ISR register and exit initialization mode */
LL_RTC_WriteReg(RTCx, ISR, 0x00000000U);
/* Reset Tamper and alternate functions configuration register */
LL_RTC_WriteReg(RTCx, TAMPCR, 0x00000000U);
/* Reset Option register */
LL_RTC_WriteReg(RTCx, OR, 0x00000000U);
/* Wait till the RTC RSF flag is set */
status = LL_RTC_WaitForSynchro(RTCx);
}
/* Enable the write protection for RTC registers */
LL_RTC_EnableWriteProtection(RTCx);
return status;
}
/**
* @brief Initializes the RTC registers according to the specified parameters
* in RTC_InitStruct.
* @param RTCx RTC Instance
* @param RTC_InitStruct pointer to a @ref LL_RTC_InitTypeDef structure that contains
* the configuration information for the RTC peripheral.
* @note The RTC Prescaler register is write protected and can be written in
* initialization mode only.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC registers are initialized
* - ERROR: RTC registers are not initialized
*/
ErrorStatus LL_RTC_Init(RTC_TypeDef *RTCx, LL_RTC_InitTypeDef *RTC_InitStruct)
{
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
assert_param(IS_LL_RTC_HOURFORMAT(RTC_InitStruct->HourFormat));
assert_param(IS_LL_RTC_ASYNCH_PREDIV(RTC_InitStruct->AsynchPrescaler));
assert_param(IS_LL_RTC_SYNCH_PREDIV(RTC_InitStruct->SynchPrescaler));
/* Disable the write protection for RTC registers */
LL_RTC_DisableWriteProtection(RTCx);
/* Set Initialization mode */
if (LL_RTC_EnterInitMode(RTCx) != ERROR)
{
/* Set Hour Format */
LL_RTC_SetHourFormat(RTCx, RTC_InitStruct->HourFormat);
/* Configure Synchronous and Asynchronous prescaler factor */
LL_RTC_SetSynchPrescaler(RTCx, RTC_InitStruct->SynchPrescaler);
LL_RTC_SetAsynchPrescaler(RTCx, RTC_InitStruct->AsynchPrescaler);
/* Exit Initialization mode */
LL_RTC_DisableInitMode(RTCx);
status = SUCCESS;
}
/* Enable the write protection for RTC registers */
LL_RTC_EnableWriteProtection(RTCx);
return status;
}
/**
* @brief Set each @ref LL_RTC_InitTypeDef field to default value.
* @param RTC_InitStruct pointer to a @ref LL_RTC_InitTypeDef structure which will be initialized.
* @retval None
*/
void LL_RTC_StructInit(LL_RTC_InitTypeDef *RTC_InitStruct)
{
/* Set RTC_InitStruct fields to default values */
RTC_InitStruct->HourFormat = LL_RTC_HOURFORMAT_24HOUR;
RTC_InitStruct->AsynchPrescaler = RTC_ASYNCH_PRESC_DEFAULT;
RTC_InitStruct->SynchPrescaler = RTC_SYNCH_PRESC_DEFAULT;
}
/**
* @brief Set the RTC current time.
* @param RTCx RTC Instance
* @param RTC_Format This parameter can be one of the following values:
* @arg @ref LL_RTC_FORMAT_BIN
* @arg @ref LL_RTC_FORMAT_BCD
* @param RTC_TimeStruct pointer to a RTC_TimeTypeDef structure that contains
* the time configuration information for the RTC.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Time register is configured
* - ERROR: RTC Time register is not configured
*/
ErrorStatus LL_RTC_TIME_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_TimeTypeDef *RTC_TimeStruct)
{
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
assert_param(IS_LL_RTC_FORMAT(RTC_Format));
if (RTC_Format == LL_RTC_FORMAT_BIN)
{
if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)
{
assert_param(IS_LL_RTC_HOUR12(RTC_TimeStruct->Hours));
assert_param(IS_LL_RTC_TIME_FORMAT(RTC_TimeStruct->TimeFormat));
}
else
{
RTC_TimeStruct->TimeFormat = 0x00U;
assert_param(IS_LL_RTC_HOUR24(RTC_TimeStruct->Hours));
}
assert_param(IS_LL_RTC_MINUTES(RTC_TimeStruct->Minutes));
assert_param(IS_LL_RTC_SECONDS(RTC_TimeStruct->Seconds));
}
else
{
if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)
{
assert_param(IS_LL_RTC_HOUR12(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Hours)));
assert_param(IS_LL_RTC_TIME_FORMAT(RTC_TimeStruct->TimeFormat));
}
else
{
RTC_TimeStruct->TimeFormat = 0x00U;
assert_param(IS_LL_RTC_HOUR24(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Hours)));
}
assert_param(IS_LL_RTC_MINUTES(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Minutes)));
assert_param(IS_LL_RTC_SECONDS(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Seconds)));
}
/* Disable the write protection for RTC registers */
LL_RTC_DisableWriteProtection(RTCx);
/* Set Initialization mode */
if (LL_RTC_EnterInitMode(RTCx) != ERROR)
{
/* Check the input parameters format */
if (RTC_Format != LL_RTC_FORMAT_BIN)
{
LL_RTC_TIME_Config(RTCx, RTC_TimeStruct->TimeFormat, RTC_TimeStruct->Hours,
RTC_TimeStruct->Minutes, RTC_TimeStruct->Seconds);
}
else
{
LL_RTC_TIME_Config(RTCx, RTC_TimeStruct->TimeFormat, __LL_RTC_CONVERT_BIN2BCD(RTC_TimeStruct->Hours),
__LL_RTC_CONVERT_BIN2BCD(RTC_TimeStruct->Minutes),
__LL_RTC_CONVERT_BIN2BCD(RTC_TimeStruct->Seconds));
}
/* Exit Initialization mode */
LL_RTC_DisableInitMode(RTC);
/* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
if (LL_RTC_IsShadowRegBypassEnabled(RTCx) == 0U)
{
status = LL_RTC_WaitForSynchro(RTCx);
}
else
{
status = SUCCESS;
}
}
/* Enable the write protection for RTC registers */
LL_RTC_EnableWriteProtection(RTCx);
return status;
}
/**
* @brief Set each @ref LL_RTC_TimeTypeDef field to default value (Time = 00h:00min:00sec).
* @param RTC_TimeStruct pointer to a @ref LL_RTC_TimeTypeDef structure which will be initialized.
* @retval None
*/
void LL_RTC_TIME_StructInit(LL_RTC_TimeTypeDef *RTC_TimeStruct)
{
/* Time = 00h:00min:00sec */
RTC_TimeStruct->TimeFormat = LL_RTC_TIME_FORMAT_AM_OR_24;
RTC_TimeStruct->Hours = 0U;
RTC_TimeStruct->Minutes = 0U;
RTC_TimeStruct->Seconds = 0U;
}
/**
* @brief Set the RTC current date.
* @param RTCx RTC Instance
* @param RTC_Format This parameter can be one of the following values:
* @arg @ref LL_RTC_FORMAT_BIN
* @arg @ref LL_RTC_FORMAT_BCD
* @param RTC_DateStruct: pointer to a RTC_DateTypeDef structure that contains
* the date configuration information for the RTC.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Day register is configured
* - ERROR: RTC Day register is not configured
*/
ErrorStatus LL_RTC_DATE_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_DateTypeDef *RTC_DateStruct)
{
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
assert_param(IS_LL_RTC_FORMAT(RTC_Format));
if ((RTC_Format == LL_RTC_FORMAT_BIN) && ((RTC_DateStruct->Month & 0x10U) == 0x10U))
{
RTC_DateStruct->Month = (RTC_DateStruct->Month & (uint32_t)~(0x10U)) + 0x0AU;
}
if (RTC_Format == LL_RTC_FORMAT_BIN)
{
assert_param(IS_LL_RTC_YEAR(RTC_DateStruct->Year));
assert_param(IS_LL_RTC_MONTH(RTC_DateStruct->Month));
assert_param(IS_LL_RTC_DAY(RTC_DateStruct->Day));
}
else
{
assert_param(IS_LL_RTC_YEAR(__LL_RTC_CONVERT_BCD2BIN(RTC_DateStruct->Year)));
assert_param(IS_LL_RTC_MONTH(__LL_RTC_CONVERT_BCD2BIN(RTC_DateStruct->Month)));
assert_param(IS_LL_RTC_DAY(__LL_RTC_CONVERT_BCD2BIN(RTC_DateStruct->Day)));
}
assert_param(IS_LL_RTC_WEEKDAY(RTC_DateStruct->WeekDay));
/* Disable the write protection for RTC registers */
LL_RTC_DisableWriteProtection(RTCx);
/* Set Initialization mode */
if (LL_RTC_EnterInitMode(RTCx) != ERROR)
{
/* Check the input parameters format */
if (RTC_Format != LL_RTC_FORMAT_BIN)
{
LL_RTC_DATE_Config(RTCx, RTC_DateStruct->WeekDay, RTC_DateStruct->Day, RTC_DateStruct->Month, RTC_DateStruct->Year);
}
else
{
LL_RTC_DATE_Config(RTCx, RTC_DateStruct->WeekDay, __LL_RTC_CONVERT_BIN2BCD(RTC_DateStruct->Day),
__LL_RTC_CONVERT_BIN2BCD(RTC_DateStruct->Month), __LL_RTC_CONVERT_BIN2BCD(RTC_DateStruct->Year));
}
/* Exit Initialization mode */
LL_RTC_DisableInitMode(RTC);
/* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
if (LL_RTC_IsShadowRegBypassEnabled(RTCx) == 0U)
{
status = LL_RTC_WaitForSynchro(RTCx);
}
else
{
status = SUCCESS;
}
}
/* Enable the write protection for RTC registers */
LL_RTC_EnableWriteProtection(RTCx);
return status;
}
/**
* @brief Set each @ref LL_RTC_DateTypeDef field to default value (date = Monday, January 01 xx00)
* @param RTC_DateStruct pointer to a @ref LL_RTC_DateTypeDef structure which will be initialized.
* @retval None
*/
void LL_RTC_DATE_StructInit(LL_RTC_DateTypeDef *RTC_DateStruct)
{
/* Monday, January 01 xx00 */
RTC_DateStruct->WeekDay = LL_RTC_WEEKDAY_MONDAY;
RTC_DateStruct->Day = 1U;
RTC_DateStruct->Month = LL_RTC_MONTH_JANUARY;
RTC_DateStruct->Year = 0U;
}
/**
* @brief Set the RTC Alarm A.
* @note The Alarm register can only be written when the corresponding Alarm
* is disabled (Use @ref LL_RTC_ALMA_Disable function).
* @param RTCx RTC Instance
* @param RTC_Format This parameter can be one of the following values:
* @arg @ref LL_RTC_FORMAT_BIN
* @arg @ref LL_RTC_FORMAT_BCD
* @param RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure that
* contains the alarm configuration parameters.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ALARMA registers are configured
* - ERROR: ALARMA registers are not configured
*/
ErrorStatus LL_RTC_ALMA_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_AlarmTypeDef *RTC_AlarmStruct)
{
/* Check the parameters */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
assert_param(IS_LL_RTC_FORMAT(RTC_Format));
assert_param(IS_LL_RTC_ALMA_MASK(RTC_AlarmStruct->AlarmMask));
assert_param(IS_LL_RTC_ALMA_DATE_WEEKDAY_SEL(RTC_AlarmStruct->AlarmDateWeekDaySel));
if (RTC_Format == LL_RTC_FORMAT_BIN)
{
if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)
{
assert_param(IS_LL_RTC_HOUR12(RTC_AlarmStruct->AlarmTime.Hours));
assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));
}
else
{
RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;
assert_param(IS_LL_RTC_HOUR24(RTC_AlarmStruct->AlarmTime.Hours));
}
assert_param(IS_LL_RTC_MINUTES(RTC_AlarmStruct->AlarmTime.Minutes));
assert_param(IS_LL_RTC_SECONDS(RTC_AlarmStruct->AlarmTime.Seconds));
if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE)
{
assert_param(IS_LL_RTC_DAY(RTC_AlarmStruct->AlarmDateWeekDay));
}
else
{
assert_param(IS_LL_RTC_WEEKDAY(RTC_AlarmStruct->AlarmDateWeekDay));
}
}
else
{
if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)
{
assert_param(IS_LL_RTC_HOUR12(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));
assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));
}
else
{
RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;
assert_param(IS_LL_RTC_HOUR24(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));
}
assert_param(IS_LL_RTC_MINUTES(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Minutes)));
assert_param(IS_LL_RTC_SECONDS(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Seconds)));
if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE)
{
assert_param(IS_LL_RTC_DAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));
}
else
{
assert_param(IS_LL_RTC_WEEKDAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));
}
}
/* Disable the write protection for RTC registers */
LL_RTC_DisableWriteProtection(RTCx);
/* Select weekday selection */
if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE)
{
/* Set the date for ALARM */
LL_RTC_ALMA_DisableWeekday(RTCx);
if (RTC_Format != LL_RTC_FORMAT_BIN)
{
LL_RTC_ALMA_SetDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);
}
else
{
LL_RTC_ALMA_SetDay(RTCx, __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmDateWeekDay));
}
}
else
{
/* Set the week day for ALARM */
LL_RTC_ALMA_EnableWeekday(RTCx);
LL_RTC_ALMA_SetWeekDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);
}
/* Configure the Alarm register */
if (RTC_Format != LL_RTC_FORMAT_BIN)
{
LL_RTC_ALMA_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat, RTC_AlarmStruct->AlarmTime.Hours,
RTC_AlarmStruct->AlarmTime.Minutes, RTC_AlarmStruct->AlarmTime.Seconds);
}
else
{
LL_RTC_ALMA_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat,
__LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Hours),
__LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Minutes),
__LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Seconds));
}
/* Set ALARM mask */
LL_RTC_ALMA_SetMask(RTCx, RTC_AlarmStruct->AlarmMask);
/* Enable the write protection for RTC registers */
LL_RTC_EnableWriteProtection(RTCx);
return SUCCESS;
}
/**
* @brief Set the RTC Alarm B.
* @note The Alarm register can only be written when the corresponding Alarm
* is disabled (@ref LL_RTC_ALMB_Disable function).
* @param RTCx RTC Instance
* @param RTC_Format This parameter can be one of the following values:
* @arg @ref LL_RTC_FORMAT_BIN
* @arg @ref LL_RTC_FORMAT_BCD
* @param RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure that
* contains the alarm configuration parameters.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: ALARMB registers are configured
* - ERROR: ALARMB registers are not configured
*/
ErrorStatus LL_RTC_ALMB_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_AlarmTypeDef *RTC_AlarmStruct)
{
/* Check the parameters */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
assert_param(IS_LL_RTC_FORMAT(RTC_Format));
assert_param(IS_LL_RTC_ALMB_MASK(RTC_AlarmStruct->AlarmMask));
assert_param(IS_LL_RTC_ALMB_DATE_WEEKDAY_SEL(RTC_AlarmStruct->AlarmDateWeekDaySel));
if (RTC_Format == LL_RTC_FORMAT_BIN)
{
if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)
{
assert_param(IS_LL_RTC_HOUR12(RTC_AlarmStruct->AlarmTime.Hours));
assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));
}
else
{
RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;
assert_param(IS_LL_RTC_HOUR24(RTC_AlarmStruct->AlarmTime.Hours));
}
assert_param(IS_LL_RTC_MINUTES(RTC_AlarmStruct->AlarmTime.Minutes));
assert_param(IS_LL_RTC_SECONDS(RTC_AlarmStruct->AlarmTime.Seconds));
if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE)
{
assert_param(IS_LL_RTC_DAY(RTC_AlarmStruct->AlarmDateWeekDay));
}
else
{
assert_param(IS_LL_RTC_WEEKDAY(RTC_AlarmStruct->AlarmDateWeekDay));
}
}
else
{
if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)
{
assert_param(IS_LL_RTC_HOUR12(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));
assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));
}
else
{
RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;
assert_param(IS_LL_RTC_HOUR24(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));
}
assert_param(IS_LL_RTC_MINUTES(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Minutes)));
assert_param(IS_LL_RTC_SECONDS(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Seconds)));
if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE)
{
assert_param(IS_LL_RTC_DAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));
}
else
{
assert_param(IS_LL_RTC_WEEKDAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));
}
}
/* Disable the write protection for RTC registers */
LL_RTC_DisableWriteProtection(RTCx);
/* Select weekday selection */
if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE)
{
/* Set the date for ALARM */
LL_RTC_ALMB_DisableWeekday(RTCx);
if (RTC_Format != LL_RTC_FORMAT_BIN)
{
LL_RTC_ALMB_SetDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);
}
else
{
LL_RTC_ALMB_SetDay(RTCx, __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmDateWeekDay));
}
}
else
{
/* Set the week day for ALARM */
LL_RTC_ALMB_EnableWeekday(RTCx);
LL_RTC_ALMB_SetWeekDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);
}
/* Configure the Alarm register */
if (RTC_Format != LL_RTC_FORMAT_BIN)
{
LL_RTC_ALMB_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat, RTC_AlarmStruct->AlarmTime.Hours,
RTC_AlarmStruct->AlarmTime.Minutes, RTC_AlarmStruct->AlarmTime.Seconds);
}
else
{
LL_RTC_ALMB_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat,
__LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Hours),
__LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Minutes),
__LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Seconds));
}
/* Set ALARM mask */
LL_RTC_ALMB_SetMask(RTCx, RTC_AlarmStruct->AlarmMask);
/* Enable the write protection for RTC registers */
LL_RTC_EnableWriteProtection(RTCx);
return SUCCESS;
}
/**
* @brief Set each @ref LL_RTC_AlarmTypeDef of ALARMA field to default value (Time = 00h:00mn:00sec /
* Day = 1st day of the month/Mask = all fields are masked).
* @param RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure which will be initialized.
* @retval None
*/
void LL_RTC_ALMA_StructInit(LL_RTC_AlarmTypeDef *RTC_AlarmStruct)
{
/* Alarm Time Settings : Time = 00h:00mn:00sec */
RTC_AlarmStruct->AlarmTime.TimeFormat = LL_RTC_ALMA_TIME_FORMAT_AM;
RTC_AlarmStruct->AlarmTime.Hours = 0U;
RTC_AlarmStruct->AlarmTime.Minutes = 0U;
RTC_AlarmStruct->AlarmTime.Seconds = 0U;
/* Alarm Day Settings : Day = 1st day of the month */
RTC_AlarmStruct->AlarmDateWeekDaySel = LL_RTC_ALMA_DATEWEEKDAYSEL_DATE;
RTC_AlarmStruct->AlarmDateWeekDay = 1U;
/* Alarm Masks Settings : Mask = all fields are not masked */
RTC_AlarmStruct->AlarmMask = LL_RTC_ALMA_MASK_NONE;
}
/**
* @brief Set each @ref LL_RTC_AlarmTypeDef of ALARMA field to default value (Time = 00h:00mn:00sec /
* Day = 1st day of the month/Mask = all fields are masked).
* @param RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure which will be initialized.
* @retval None
*/
void LL_RTC_ALMB_StructInit(LL_RTC_AlarmTypeDef *RTC_AlarmStruct)
{
/* Alarm Time Settings : Time = 00h:00mn:00sec */
RTC_AlarmStruct->AlarmTime.TimeFormat = LL_RTC_ALMB_TIME_FORMAT_AM;
RTC_AlarmStruct->AlarmTime.Hours = 0U;
RTC_AlarmStruct->AlarmTime.Minutes = 0U;
RTC_AlarmStruct->AlarmTime.Seconds = 0U;
/* Alarm Day Settings : Day = 1st day of the month */
RTC_AlarmStruct->AlarmDateWeekDaySel = LL_RTC_ALMB_DATEWEEKDAYSEL_DATE;
RTC_AlarmStruct->AlarmDateWeekDay = 1U;
/* Alarm Masks Settings : Mask = all fields are not masked */
RTC_AlarmStruct->AlarmMask = LL_RTC_ALMB_MASK_NONE;
}
/**
* @brief Enters the RTC Initialization mode.
* @note The RTC Initialization mode is write protected, use the
* @ref LL_RTC_DisableWriteProtection before calling this function.
* @param RTCx RTC Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC is in Init mode
* - ERROR: RTC is not in Init mode
*/
ErrorStatus LL_RTC_EnterInitMode(RTC_TypeDef *RTCx)
{
__IO uint32_t timeout = RTC_INITMODE_TIMEOUT;
ErrorStatus status = SUCCESS;
uint32_t tmp = 0U;
/* Check the parameter */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
/* Check if the Initialization mode is set */
if (LL_RTC_IsActiveFlag_INIT(RTCx) == 0U)
{
/* Set the Initialization mode */
LL_RTC_EnableInitMode(RTCx);
/* Wait till RTC is in INIT state and if Time out is reached exit */
tmp = LL_RTC_IsActiveFlag_INIT(RTCx);
while ((timeout != 0U) && (tmp != 1U))
{
if (LL_SYSTICK_IsActiveCounterFlag() == 1U)
{
timeout --;
}
tmp = LL_RTC_IsActiveFlag_INIT(RTCx);
if (timeout == 0U)
{
status = ERROR;
}
}
}
return status;
}
/**
* @brief Exit the RTC Initialization mode.
* @note When the initialization sequence is complete, the calendar restarts
* counting after 4 RTCCLK cycles.
* @note The RTC Initialization mode is write protected, use the
* @ref LL_RTC_DisableWriteProtection before calling this function.
* @param RTCx RTC Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC exited from in Init mode
* - ERROR: Not applicable
*/
ErrorStatus LL_RTC_ExitInitMode(RTC_TypeDef *RTCx)
{
/* Check the parameter */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
/* Disable initialization mode */
LL_RTC_DisableInitMode(RTCx);
return SUCCESS;
}
/**
* @brief Waits until the RTC Time and Day registers (RTC_TR and RTC_DR) are
* synchronized with RTC APB clock.
* @note The RTC Resynchronization mode is write protected, use the
* @ref LL_RTC_DisableWriteProtection before calling this function.
* @note To read the calendar through the shadow registers after Calendar
* initialization, calendar update or after wakeup from low power modes
* the software must first clear the RSF flag.
* The software must then wait until it is set again before reading
* the calendar, which means that the calendar registers have been
* correctly copied into the RTC_TR and RTC_DR shadow registers.
* @param RTCx RTC Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC registers are synchronised
* - ERROR: RTC registers are not synchronised
*/
ErrorStatus LL_RTC_WaitForSynchro(RTC_TypeDef *RTCx)
{
__IO uint32_t timeout = RTC_SYNCHRO_TIMEOUT;
ErrorStatus status = SUCCESS;
uint32_t tmp = 0U;
/* Check the parameter */
assert_param(IS_RTC_ALL_INSTANCE(RTCx));
/* Clear RSF flag */
LL_RTC_ClearFlag_RS(RTCx);
/* Wait the registers to be synchronised */
tmp = LL_RTC_IsActiveFlag_RS(RTCx);
while ((timeout != 0U) && (tmp != 0U))
{
if (LL_SYSTICK_IsActiveCounterFlag() == 1U)
{
timeout--;
}
tmp = LL_RTC_IsActiveFlag_RS(RTCx);
if (timeout == 0U)
{
status = ERROR;
}
}
if (status != ERROR)
{
timeout = RTC_SYNCHRO_TIMEOUT;
tmp = LL_RTC_IsActiveFlag_RS(RTCx);
while ((timeout != 0U) && (tmp != 1U))
{
if (LL_SYSTICK_IsActiveCounterFlag() == 1U)
{
timeout--;
}
tmp = LL_RTC_IsActiveFlag_RS(RTCx);
if (timeout == 0U)
{
status = ERROR;
}
}
}
return (status);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* defined(RTC) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_spi.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief SPI LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_spi.h"
#include "stm32l0xx_ll_bus.h"
#include "stm32l0xx_ll_rcc.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (SPI1) || defined (SPI2)
/** @addtogroup SPI_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup SPI_LL_Private_Constants SPI Private Constants
* @{
*/
/* SPI registers Masks */
#define SPI_CR1_CLEAR_MASK (SPI_CR1_CPHA | SPI_CR1_CPOL | SPI_CR1_MSTR | \
SPI_CR1_BR | SPI_CR1_LSBFIRST | SPI_CR1_SSI | \
SPI_CR1_SSM | SPI_CR1_RXONLY | SPI_CR1_DFF | \
SPI_CR1_CRCNEXT | SPI_CR1_CRCEN | SPI_CR1_BIDIOE | \
SPI_CR1_BIDIMODE)
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @defgroup SPI_LL_Private_Macros SPI Private Macros
* @{
*/
#define IS_LL_SPI_TRANSFER_DIRECTION(__VALUE__) (((__VALUE__) == LL_SPI_FULL_DUPLEX) \
|| ((__VALUE__) == LL_SPI_SIMPLEX_RX) \
|| ((__VALUE__) == LL_SPI_HALF_DUPLEX_RX) \
|| ((__VALUE__) == LL_SPI_HALF_DUPLEX_TX))
#define IS_LL_SPI_MODE(__VALUE__) (((__VALUE__) == LL_SPI_MODE_MASTER) \
|| ((__VALUE__) == LL_SPI_MODE_SLAVE))
#define IS_LL_SPI_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_SPI_DATAWIDTH_8BIT) \
|| ((__VALUE__) == LL_SPI_DATAWIDTH_16BIT))
#define IS_LL_SPI_POLARITY(__VALUE__) (((__VALUE__) == LL_SPI_POLARITY_LOW) \
|| ((__VALUE__) == LL_SPI_POLARITY_HIGH))
#define IS_LL_SPI_PHASE(__VALUE__) (((__VALUE__) == LL_SPI_PHASE_1EDGE) \
|| ((__VALUE__) == LL_SPI_PHASE_2EDGE))
#define IS_LL_SPI_NSS(__VALUE__) (((__VALUE__) == LL_SPI_NSS_SOFT) \
|| ((__VALUE__) == LL_SPI_NSS_HARD_INPUT) \
|| ((__VALUE__) == LL_SPI_NSS_HARD_OUTPUT))
#define IS_LL_SPI_BAUDRATE(__VALUE__) (((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV2) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV4) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV8) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV16) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV32) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV64) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV128) \
|| ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV256))
#define IS_LL_SPI_BITORDER(__VALUE__) (((__VALUE__) == LL_SPI_LSB_FIRST) \
|| ((__VALUE__) == LL_SPI_MSB_FIRST))
#define IS_LL_SPI_CRCCALCULATION(__VALUE__) (((__VALUE__) == LL_SPI_CRCCALCULATION_ENABLE) \
|| ((__VALUE__) == LL_SPI_CRCCALCULATION_DISABLE))
#define IS_LL_SPI_CRC_POLYNOMIAL(__VALUE__) ((__VALUE__) >= 0x1U)
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup SPI_LL_Exported_Functions
* @{
*/
/** @addtogroup SPI_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the SPI registers to their default reset values.
* @param SPIx SPI Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: SPI registers are de-initialized
* - ERROR: SPI registers are not de-initialized
*/
ErrorStatus LL_SPI_DeInit(SPI_TypeDef *SPIx)
{
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_SPI_ALL_INSTANCE(SPIx));
#if defined(SPI1)
if (SPIx == SPI1)
{
/* Force reset of SPI clock */
LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_SPI1);
/* Release reset of SPI clock */
LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_SPI1);
status = SUCCESS;
}
#endif /* SPI1 */
#if defined(SPI2)
if (SPIx == SPI2)
{
/* Force reset of SPI clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_SPI2);
/* Release reset of SPI clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_SPI2);
status = SUCCESS;
}
#endif /* SPI2 */
return status;
}
/**
* @brief Initialize the SPI registers according to the specified parameters in SPI_InitStruct.
* @note As some bits in SPI configuration registers can only be written when the SPI is disabled (SPI_CR1_SPE bit =0),
* SPI IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
* @param SPIx SPI Instance
* @param SPI_InitStruct pointer to a @ref LL_SPI_InitTypeDef structure
* @retval An ErrorStatus enumeration value. (Return always SUCCESS)
*/
ErrorStatus LL_SPI_Init(SPI_TypeDef *SPIx, LL_SPI_InitTypeDef *SPI_InitStruct)
{
ErrorStatus status = ERROR;
/* Check the SPI Instance SPIx*/
assert_param(IS_SPI_ALL_INSTANCE(SPIx));
/* Check the SPI parameters from SPI_InitStruct*/
assert_param(IS_LL_SPI_TRANSFER_DIRECTION(SPI_InitStruct->TransferDirection));
assert_param(IS_LL_SPI_MODE(SPI_InitStruct->Mode));
assert_param(IS_LL_SPI_DATAWIDTH(SPI_InitStruct->DataWidth));
assert_param(IS_LL_SPI_POLARITY(SPI_InitStruct->ClockPolarity));
assert_param(IS_LL_SPI_PHASE(SPI_InitStruct->ClockPhase));
assert_param(IS_LL_SPI_NSS(SPI_InitStruct->NSS));
assert_param(IS_LL_SPI_BAUDRATE(SPI_InitStruct->BaudRate));
assert_param(IS_LL_SPI_BITORDER(SPI_InitStruct->BitOrder));
assert_param(IS_LL_SPI_CRCCALCULATION(SPI_InitStruct->CRCCalculation));
if (LL_SPI_IsEnabled(SPIx) == 0x00000000U)
{
/*---------------------------- SPIx CR1 Configuration ------------------------
* Configure SPIx CR1 with parameters:
* - TransferDirection: SPI_CR1_BIDIMODE, SPI_CR1_BIDIOE and SPI_CR1_RXONLY bits
* - Master/Slave Mode: SPI_CR1_MSTR bit
* - DataWidth: SPI_CR1_DFF bit
* - ClockPolarity: SPI_CR1_CPOL bit
* - ClockPhase: SPI_CR1_CPHA bit
* - NSS management: SPI_CR1_SSM bit
* - BaudRate prescaler: SPI_CR1_BR[2:0] bits
* - BitOrder: SPI_CR1_LSBFIRST bit
* - CRCCalculation: SPI_CR1_CRCEN bit
*/
MODIFY_REG(SPIx->CR1,
SPI_CR1_CLEAR_MASK,
SPI_InitStruct->TransferDirection | SPI_InitStruct->Mode | SPI_InitStruct->DataWidth |
SPI_InitStruct->ClockPolarity | SPI_InitStruct->ClockPhase |
SPI_InitStruct->NSS | SPI_InitStruct->BaudRate |
SPI_InitStruct->BitOrder | SPI_InitStruct->CRCCalculation);
/*---------------------------- SPIx CR2 Configuration ------------------------
* Configure SPIx CR2 with parameters:
* - NSS management: SSOE bit
*/
MODIFY_REG(SPIx->CR2, SPI_CR2_SSOE, (SPI_InitStruct->NSS >> 16U));
/*---------------------------- SPIx CRCPR Configuration ----------------------
* Configure SPIx CRCPR with parameters:
* - CRCPoly: CRCPOLY[15:0] bits
*/
if (SPI_InitStruct->CRCCalculation == LL_SPI_CRCCALCULATION_ENABLE)
{
assert_param(IS_LL_SPI_CRC_POLYNOMIAL(SPI_InitStruct->CRCPoly));
LL_SPI_SetCRCPolynomial(SPIx, SPI_InitStruct->CRCPoly);
}
status = SUCCESS;
}
#if defined (SPI_I2S_SUPPORT)
/* Activate the SPI mode (Reset I2SMOD bit in I2SCFGR register) */
CLEAR_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SMOD);
#endif /* SPI_I2S_SUPPORT */
return status;
}
/**
* @brief Set each @ref LL_SPI_InitTypeDef field to default value.
* @param SPI_InitStruct pointer to a @ref LL_SPI_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_SPI_StructInit(LL_SPI_InitTypeDef *SPI_InitStruct)
{
/* Set SPI_InitStruct fields to default values */
SPI_InitStruct->TransferDirection = LL_SPI_FULL_DUPLEX;
SPI_InitStruct->Mode = LL_SPI_MODE_SLAVE;
SPI_InitStruct->DataWidth = LL_SPI_DATAWIDTH_8BIT;
SPI_InitStruct->ClockPolarity = LL_SPI_POLARITY_LOW;
SPI_InitStruct->ClockPhase = LL_SPI_PHASE_1EDGE;
SPI_InitStruct->NSS = LL_SPI_NSS_HARD_INPUT;
SPI_InitStruct->BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV2;
SPI_InitStruct->BitOrder = LL_SPI_MSB_FIRST;
SPI_InitStruct->CRCCalculation = LL_SPI_CRCCALCULATION_DISABLE;
SPI_InitStruct->CRCPoly = 7U;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#if defined(SPI_I2S_SUPPORT)
/** @addtogroup I2S_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup I2S_LL_Private_Constants I2S Private Constants
* @{
*/
/* I2S registers Masks */
#define I2S_I2SCFGR_CLEAR_MASK (SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN | \
SPI_I2SCFGR_CKPOL | SPI_I2SCFGR_I2SSTD | \
SPI_I2SCFGR_I2SCFG | SPI_I2SCFGR_I2SMOD )
#define I2S_I2SPR_CLEAR_MASK 0x0002U
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @defgroup I2S_LL_Private_Macros I2S Private Macros
* @{
*/
#define IS_LL_I2S_DATAFORMAT(__VALUE__) (((__VALUE__) == LL_I2S_DATAFORMAT_16B) \
|| ((__VALUE__) == LL_I2S_DATAFORMAT_16B_EXTENDED) \
|| ((__VALUE__) == LL_I2S_DATAFORMAT_24B) \
|| ((__VALUE__) == LL_I2S_DATAFORMAT_32B))
#define IS_LL_I2S_CPOL(__VALUE__) (((__VALUE__) == LL_I2S_POLARITY_LOW) \
|| ((__VALUE__) == LL_I2S_POLARITY_HIGH))
#define IS_LL_I2S_STANDARD(__VALUE__) (((__VALUE__) == LL_I2S_STANDARD_PHILIPS) \
|| ((__VALUE__) == LL_I2S_STANDARD_MSB) \
|| ((__VALUE__) == LL_I2S_STANDARD_LSB) \
|| ((__VALUE__) == LL_I2S_STANDARD_PCM_SHORT) \
|| ((__VALUE__) == LL_I2S_STANDARD_PCM_LONG))
#define IS_LL_I2S_MODE(__VALUE__) (((__VALUE__) == LL_I2S_MODE_SLAVE_TX) \
|| ((__VALUE__) == LL_I2S_MODE_SLAVE_RX) \
|| ((__VALUE__) == LL_I2S_MODE_MASTER_TX) \
|| ((__VALUE__) == LL_I2S_MODE_MASTER_RX))
#define IS_LL_I2S_MCLK_OUTPUT(__VALUE__) (((__VALUE__) == LL_I2S_MCLK_OUTPUT_ENABLE) \
|| ((__VALUE__) == LL_I2S_MCLK_OUTPUT_DISABLE))
#define IS_LL_I2S_AUDIO_FREQ(__VALUE__) ((((__VALUE__) >= LL_I2S_AUDIOFREQ_8K) \
&& ((__VALUE__) <= LL_I2S_AUDIOFREQ_192K)) \
|| ((__VALUE__) == LL_I2S_AUDIOFREQ_DEFAULT))
#define IS_LL_I2S_PRESCALER_LINEAR(__VALUE__) ((__VALUE__) >= 0x2U)
#define IS_LL_I2S_PRESCALER_PARITY(__VALUE__) (((__VALUE__) == LL_I2S_PRESCALER_PARITY_EVEN) \
|| ((__VALUE__) == LL_I2S_PRESCALER_PARITY_ODD))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup I2S_LL_Exported_Functions
* @{
*/
/** @addtogroup I2S_LL_EF_Init
* @{
*/
/**
* @brief De-initialize the SPI/I2S registers to their default reset values.
* @param SPIx SPI Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: SPI registers are de-initialized
* - ERROR: SPI registers are not de-initialized
*/
ErrorStatus LL_I2S_DeInit(SPI_TypeDef *SPIx)
{
return LL_SPI_DeInit(SPIx);
}
/**
* @brief Initializes the SPI/I2S registers according to the specified parameters in I2S_InitStruct.
* @note As some bits in SPI configuration registers can only be written when the SPI is disabled (SPI_CR1_SPE bit =0),
* SPI IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
* @param SPIx SPI Instance
* @param I2S_InitStruct pointer to a @ref LL_I2S_InitTypeDef structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: SPI registers are Initialized
* - ERROR: SPI registers are not Initialized
*/
ErrorStatus LL_I2S_Init(SPI_TypeDef *SPIx, LL_I2S_InitTypeDef *I2S_InitStruct)
{
uint16_t i2sdiv = 2U, i2sodd = 0U, packetlength = 1U;
uint32_t tmp = 0U;
LL_RCC_ClocksTypeDef rcc_clocks;
uint32_t sourceclock = 0U;
ErrorStatus status = ERROR;
/* Check the I2S parameters */
assert_param(IS_I2S_ALL_INSTANCE(SPIx));
assert_param(IS_LL_I2S_MODE(I2S_InitStruct->Mode));
assert_param(IS_LL_I2S_STANDARD(I2S_InitStruct->Standard));
assert_param(IS_LL_I2S_DATAFORMAT(I2S_InitStruct->DataFormat));
assert_param(IS_LL_I2S_MCLK_OUTPUT(I2S_InitStruct->MCLKOutput));
assert_param(IS_LL_I2S_AUDIO_FREQ(I2S_InitStruct->AudioFreq));
assert_param(IS_LL_I2S_CPOL(I2S_InitStruct->ClockPolarity));
if (LL_I2S_IsEnabled(SPIx) == 0x00000000U)
{
/*---------------------------- SPIx I2SCFGR Configuration --------------------
* Configure SPIx I2SCFGR with parameters:
* - Mode: SPI_I2SCFGR_I2SCFG[1:0] bit
* - Standard: SPI_I2SCFGR_I2SSTD[1:0] and SPI_I2SCFGR_PCMSYNC bits
* - DataFormat: SPI_I2SCFGR_CHLEN and SPI_I2SCFGR_DATLEN bits
* - ClockPolarity: SPI_I2SCFGR_CKPOL bit
*/
/* Write to SPIx I2SCFGR */
MODIFY_REG(SPIx->I2SCFGR,
I2S_I2SCFGR_CLEAR_MASK,
I2S_InitStruct->Mode | I2S_InitStruct->Standard |
I2S_InitStruct->DataFormat | I2S_InitStruct->ClockPolarity |
SPI_I2SCFGR_I2SMOD);
/*---------------------------- SPIx I2SPR Configuration ----------------------
* Configure SPIx I2SPR with parameters:
* - MCLKOutput: SPI_I2SPR_MCKOE bit
* - AudioFreq: SPI_I2SPR_I2SDIV[7:0] and SPI_I2SPR_ODD bits
*/
/* If the default value has to be written, reinitialize i2sdiv and i2sodd*/
if (I2S_InitStruct->AudioFreq == LL_I2S_AUDIOFREQ_DEFAULT)
{
i2sodd = 0U;
i2sdiv = 2U;
}
/* If the requested audio frequency is not the default, compute the prescaler */
else
{
/* Check the frame length (For the Prescaler computing) */
if (I2S_InitStruct->DataFormat == LL_I2S_DATAFORMAT_16B)
{
/* Packet length is 16 bits */
packetlength = 1U;
}
else
{
/* Packet length is 32 bits */
packetlength = 2U;
}
/* I2S Clock source is System clock: Get System Clock frequency */
LL_RCC_GetSystemClocksFreq(&rcc_clocks);
/* Get the source clock value: based on System Clock value */
sourceclock = rcc_clocks.SYSCLK_Frequency;
/* Compute the Real divider depending on the MCLK output state with a floating point */
if (I2S_InitStruct->MCLKOutput == LL_I2S_MCLK_OUTPUT_ENABLE)
{
/* MCLK output is enabled */
tmp = (uint16_t)(((((sourceclock / 256U) * 10U) / I2S_InitStruct->AudioFreq)) + 5U);
}
else
{
/* MCLK output is disabled */
tmp = (uint16_t)(((((sourceclock / (32U * packetlength)) * 10U) / I2S_InitStruct->AudioFreq)) + 5U);
}
/* Remove the floating point */
tmp = tmp / 10U;
/* Check the parity of the divider */
i2sodd = (uint16_t)(tmp & (uint16_t)0x0001U);
/* Compute the i2sdiv prescaler */
i2sdiv = (uint16_t)((tmp - i2sodd) / 2U);
/* Get the Mask for the Odd bit (SPI_I2SPR[8]) register */
i2sodd = (uint16_t)(i2sodd << 8U);
}
/* Test if the divider is 1 or 0 or greater than 0xFF */
if ((i2sdiv < 2U) || (i2sdiv > 0xFFU))
{
/* Set the default values */
i2sdiv = 2U;
i2sodd = 0U;
}
/* Write to SPIx I2SPR register the computed value */
WRITE_REG(SPIx->I2SPR, i2sdiv | i2sodd | I2S_InitStruct->MCLKOutput);
status = SUCCESS;
}
return status;
}
/**
* @brief Set each @ref LL_I2S_InitTypeDef field to default value.
* @param I2S_InitStruct pointer to a @ref LL_I2S_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_I2S_StructInit(LL_I2S_InitTypeDef *I2S_InitStruct)
{
/*--------------- Reset I2S init structure parameters values -----------------*/
I2S_InitStruct->Mode = LL_I2S_MODE_SLAVE_TX;
I2S_InitStruct->Standard = LL_I2S_STANDARD_PHILIPS;
I2S_InitStruct->DataFormat = LL_I2S_DATAFORMAT_16B;
I2S_InitStruct->MCLKOutput = LL_I2S_MCLK_OUTPUT_DISABLE;
I2S_InitStruct->AudioFreq = LL_I2S_AUDIOFREQ_DEFAULT;
I2S_InitStruct->ClockPolarity = LL_I2S_POLARITY_LOW;
}
/**
* @brief Set linear and parity prescaler.
* @note To calculate value of PrescalerLinear(I2SDIV[7:0] bits) and PrescalerParity(ODD bit)\n
* Check Audio frequency table and formulas inside Reference Manual (SPI/I2S).
* @param SPIx SPI Instance
* @param PrescalerLinear value: Min_Data=0x02 and Max_Data=0xFF.
* @param PrescalerParity This parameter can be one of the following values:
* @arg @ref LL_I2S_PRESCALER_PARITY_EVEN
* @arg @ref LL_I2S_PRESCALER_PARITY_ODD
* @retval None
*/
void LL_I2S_ConfigPrescaler(SPI_TypeDef *SPIx, uint32_t PrescalerLinear, uint32_t PrescalerParity)
{
/* Check the I2S parameters */
assert_param(IS_I2S_ALL_INSTANCE(SPIx));
assert_param(IS_LL_I2S_PRESCALER_LINEAR(PrescalerLinear));
assert_param(IS_LL_I2S_PRESCALER_PARITY(PrescalerParity));
/* Write to SPIx I2SPR */
MODIFY_REG(SPIx->I2SPR, SPI_I2SPR_I2SDIV | SPI_I2SPR_ODD, PrescalerLinear | (PrescalerParity << 8U));
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* SPI_I2S_SUPPORT */
#endif /* defined (SPI1) || defined (SPI2) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_tim.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief TIM LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_tim.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (TIM2) || defined (TIM3) || defined (TIM21) || defined (TIM22) || defined (TIM6) || defined (TIM7)
/** @addtogroup TIM_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup TIM_LL_Private_Macros
* @{
*/
#define IS_LL_TIM_COUNTERMODE(__VALUE__) (((__VALUE__) == LL_TIM_COUNTERMODE_UP) \
|| ((__VALUE__) == LL_TIM_COUNTERMODE_DOWN) \
|| ((__VALUE__) == LL_TIM_COUNTERMODE_CENTER_UP) \
|| ((__VALUE__) == LL_TIM_COUNTERMODE_CENTER_DOWN) \
|| ((__VALUE__) == LL_TIM_COUNTERMODE_CENTER_UP_DOWN))
#define IS_LL_TIM_CLOCKDIVISION(__VALUE__) (((__VALUE__) == LL_TIM_CLOCKDIVISION_DIV1) \
|| ((__VALUE__) == LL_TIM_CLOCKDIVISION_DIV2) \
|| ((__VALUE__) == LL_TIM_CLOCKDIVISION_DIV4))
#define IS_LL_TIM_OCMODE(__VALUE__) (((__VALUE__) == LL_TIM_OCMODE_FROZEN) \
|| ((__VALUE__) == LL_TIM_OCMODE_ACTIVE) \
|| ((__VALUE__) == LL_TIM_OCMODE_INACTIVE) \
|| ((__VALUE__) == LL_TIM_OCMODE_TOGGLE) \
|| ((__VALUE__) == LL_TIM_OCMODE_FORCED_INACTIVE) \
|| ((__VALUE__) == LL_TIM_OCMODE_FORCED_ACTIVE) \
|| ((__VALUE__) == LL_TIM_OCMODE_PWM1) \
|| ((__VALUE__) == LL_TIM_OCMODE_PWM2))
#define IS_LL_TIM_OCSTATE(__VALUE__) (((__VALUE__) == LL_TIM_OCSTATE_DISABLE) \
|| ((__VALUE__) == LL_TIM_OCSTATE_ENABLE))
#define IS_LL_TIM_OCPOLARITY(__VALUE__) (((__VALUE__) == LL_TIM_OCPOLARITY_HIGH) \
|| ((__VALUE__) == LL_TIM_OCPOLARITY_LOW))
#define IS_LL_TIM_ACTIVEINPUT(__VALUE__) (((__VALUE__) == LL_TIM_ACTIVEINPUT_DIRECTTI) \
|| ((__VALUE__) == LL_TIM_ACTIVEINPUT_INDIRECTTI) \
|| ((__VALUE__) == LL_TIM_ACTIVEINPUT_TRC))
#define IS_LL_TIM_ICPSC(__VALUE__) (((__VALUE__) == LL_TIM_ICPSC_DIV1) \
|| ((__VALUE__) == LL_TIM_ICPSC_DIV2) \
|| ((__VALUE__) == LL_TIM_ICPSC_DIV4) \
|| ((__VALUE__) == LL_TIM_ICPSC_DIV8))
#define IS_LL_TIM_IC_FILTER(__VALUE__) (((__VALUE__) == LL_TIM_IC_FILTER_FDIV1) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV1_N2) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV1_N4) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV1_N8) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV2_N6) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV2_N8) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV4_N6) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV4_N8) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV8_N6) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV8_N8) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV16_N5) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV16_N6) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV16_N8) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV32_N5) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV32_N6) \
|| ((__VALUE__) == LL_TIM_IC_FILTER_FDIV32_N8))
#define IS_LL_TIM_IC_POLARITY(__VALUE__) (((__VALUE__) == LL_TIM_IC_POLARITY_RISING) \
|| ((__VALUE__) == LL_TIM_IC_POLARITY_FALLING) \
|| ((__VALUE__) == LL_TIM_IC_POLARITY_BOTHEDGE))
#define IS_LL_TIM_ENCODERMODE(__VALUE__) (((__VALUE__) == LL_TIM_ENCODERMODE_X2_TI1) \
|| ((__VALUE__) == LL_TIM_ENCODERMODE_X2_TI2) \
|| ((__VALUE__) == LL_TIM_ENCODERMODE_X4_TI12))
#define IS_LL_TIM_IC_POLARITY_ENCODER(__VALUE__) (((__VALUE__) == LL_TIM_IC_POLARITY_RISING) \
|| ((__VALUE__) == LL_TIM_IC_POLARITY_FALLING))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup TIM_LL_Private_Functions TIM Private Functions
* @{
*/
static ErrorStatus OC1Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct);
static ErrorStatus OC2Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct);
static ErrorStatus OC3Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct);
static ErrorStatus OC4Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct);
static ErrorStatus IC1Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct);
static ErrorStatus IC2Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct);
static ErrorStatus IC3Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct);
static ErrorStatus IC4Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct);
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup TIM_LL_Exported_Functions
* @{
*/
/** @addtogroup TIM_LL_EF_Init
* @{
*/
/**
* @brief Set TIMx registers to their reset values.
* @param TIMx Timer instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: invalid TIMx instance
*/
ErrorStatus LL_TIM_DeInit(TIM_TypeDef* TIMx)
{
ErrorStatus result = SUCCESS;
/* Check the parameters */
assert_param(IS_TIM_INSTANCE(TIMx));
if (TIMx == TIM2)
{
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_TIM2);
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_TIM2);
}
#if defined(TIM3)
else if (TIMx == TIM3)
{
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_TIM3);
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_TIM3);
}
#endif /* TIM3 */
#if defined(TIM6)
else if (TIMx == TIM6)
{
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_TIM6);
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_TIM6);
}
#endif /* TIM6 */
#if defined(TIM7)
else if (TIMx == TIM7)
{
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_TIM7);
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_TIM7);
}
#endif /* TIM7 */
else if (TIMx == TIM21)
{
LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_TIM21);
LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_TIM21);
}
#if defined(TIM22)
else if (TIMx == TIM22)
{
LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_TIM22);
LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_TIM22);
}
#endif /* TIM22 */
else
{
result = ERROR;
}
return result;
}
/**
* @brief Set the fields of the time base unit configuration data structure
* to their default values.
* @param TIM_InitStruct pointer to a @ref LL_TIM_InitTypeDef structure (time base unit configuration data structure)
* @retval None
*/
void LL_TIM_StructInit(LL_TIM_InitTypeDef* TIM_InitStruct)
{
/* Set the default configuration */
TIM_InitStruct->Prescaler = (uint16_t)0x0000U;
TIM_InitStruct->CounterMode = LL_TIM_COUNTERMODE_UP;
TIM_InitStruct->Autoreload = (uint32_t)0xFFFFFFFFU;
TIM_InitStruct->ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
}
/**
* @brief Configure the TIMx time base unit.
* @param TIMx Timer Instance
* @param TIM_InitStruct pointer to a @ref LL_TIM_InitTypeDef structure (TIMx time base unit configuration data structure)
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_TIM_Init(TIM_TypeDef * TIMx, LL_TIM_InitTypeDef* TIM_InitStruct)
{
uint16_t tmpcr1 = 0U;
/* Check the parameters */
assert_param(IS_TIM_INSTANCE(TIMx));
assert_param(IS_LL_TIM_COUNTERMODE(TIM_InitStruct->CounterMode));
assert_param(IS_LL_TIM_CLOCKDIVISION(TIM_InitStruct->ClockDivision));
tmpcr1 = LL_TIM_ReadReg(TIMx, CR1);
if(IS_TIM_COUNTER_MODE_SELECT_INSTANCE(TIMx))
{
/* Select the Counter Mode */
tmpcr1 &= (uint16_t)(~(TIM_CR1_DIR | TIM_CR1_CMS));
tmpcr1 |= (uint32_t)TIM_InitStruct->CounterMode;
}
if(IS_TIM_CLOCK_DIVISION_INSTANCE(TIMx))
{
/* Set the clock division */
tmpcr1 &= (uint16_t)(~TIM_CR1_CKD);
tmpcr1 |= (uint32_t)TIM_InitStruct->ClockDivision;
}
/* Write to TIMx CR1 */
LL_TIM_WriteReg(TIMx, CR1, tmpcr1);
/* Set the Autoreload value */
LL_TIM_SetAutoReload(TIMx, TIM_InitStruct->Autoreload);
/* Set the Prescaler value */
LL_TIM_SetPrescaler(TIMx, TIM_InitStruct->Prescaler);
/* Generate an update event to reload the Prescaler
and the repetition counter value (if applicable) immediately */
LL_TIM_GenerateEvent_UPDATE(TIMx);
return SUCCESS;
}
/**
* @brief Set the fields of the TIMx output channel configuration data
* structure to their default values.
* @param TIM_OC_InitStruct pointer to a @ref LL_TIM_OC_InitTypeDef structure (the output channel configuration data structure)
* @retval None
*/
void LL_TIM_OC_StructInit(LL_TIM_OC_InitTypeDef* TIM_OC_InitStruct)
{
/* Set the default configuration */
TIM_OC_InitStruct->OCMode = LL_TIM_OCMODE_FROZEN;
TIM_OC_InitStruct->OCState = LL_TIM_OCSTATE_DISABLE;
TIM_OC_InitStruct->CompareValue = (uint32_t)0x00000000U;
TIM_OC_InitStruct->OCPolarity = LL_TIM_OCPOLARITY_HIGH;
}
/**
* @brief Configure the TIMx output channel.
* @param TIMx Timer Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_TIM_CHANNEL_CH1
* @arg @ref LL_TIM_CHANNEL_CH2
* @arg @ref LL_TIM_CHANNEL_CH3
* @arg @ref LL_TIM_CHANNEL_CH4
* @param TIM_OC_InitStruct pointer to a @ref LL_TIM_OC_InitTypeDef structure (TIMx output channel configuration data structure)
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx output channel is initialized
* - ERROR: TIMx output channel is not initialized
*/
ErrorStatus LL_TIM_OC_Init(TIM_TypeDef* TIMx, uint32_t Channel, LL_TIM_OC_InitTypeDef* TIM_OC_InitStruct)
{
ErrorStatus result = ERROR;
switch(Channel)
{
case LL_TIM_CHANNEL_CH1:
result = OC1Config(TIMx, TIM_OC_InitStruct);
break;
case LL_TIM_CHANNEL_CH2:
result = OC2Config(TIMx, TIM_OC_InitStruct);
break;
case LL_TIM_CHANNEL_CH3:
result = OC3Config(TIMx, TIM_OC_InitStruct);
break;
case LL_TIM_CHANNEL_CH4:
result = OC4Config(TIMx, TIM_OC_InitStruct);
break;
default:
break;
}
return result;
}
/**
* @brief Set the fields of the TIMx input channel configuration data
* structure to their default values.
* @param TIM_ICInitStruct pointer to a @ref LL_TIM_IC_InitTypeDef structure (the input channel configuration data structure)
* @retval None
*/
void LL_TIM_IC_StructInit(LL_TIM_IC_InitTypeDef* TIM_ICInitStruct)
{
/* Set the default configuration */
TIM_ICInitStruct->ICPolarity = LL_TIM_IC_POLARITY_RISING;
TIM_ICInitStruct->ICActiveInput = LL_TIM_ACTIVEINPUT_DIRECTTI;
TIM_ICInitStruct->ICPrescaler = LL_TIM_ICPSC_DIV1;
TIM_ICInitStruct->ICFilter = LL_TIM_IC_FILTER_FDIV1;
}
/**
* @brief Configure the TIMx input channel.
* @param TIMx Timer Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_TIM_CHANNEL_CH1
* @arg @ref LL_TIM_CHANNEL_CH2
* @arg @ref LL_TIM_CHANNEL_CH3
* @arg @ref LL_TIM_CHANNEL_CH4
* @param TIM_IC_InitStruct pointer to a @ref LL_TIM_IC_InitTypeDef structure (TIMx input channel configuration data structure)
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx output channel is initialized
* - ERROR: TIMx output channel is not initialized
*/
ErrorStatus LL_TIM_IC_Init(TIM_TypeDef* TIMx, uint32_t Channel, LL_TIM_IC_InitTypeDef* TIM_IC_InitStruct)
{
ErrorStatus result = ERROR;
switch(Channel)
{
case LL_TIM_CHANNEL_CH1:
result = IC1Config(TIMx, TIM_IC_InitStruct);
break;
case LL_TIM_CHANNEL_CH2:
result = IC2Config(TIMx, TIM_IC_InitStruct);
break;
case LL_TIM_CHANNEL_CH3:
result = IC3Config(TIMx, TIM_IC_InitStruct);
break;
case LL_TIM_CHANNEL_CH4:
result = IC4Config(TIMx, TIM_IC_InitStruct);
break;
default:
break;
}
return result;
}
/**
* @brief Fills each TIM_EncoderInitStruct field with its default value
* @param TIM_EncoderInitStruct pointer to a @ref LL_TIM_ENCODER_InitTypeDef structure (encoder interface configuration data structure)
* @retval None
*/
void LL_TIM_ENCODER_StructInit(LL_TIM_ENCODER_InitTypeDef* TIM_EncoderInitStruct)
{
/* Set the default configuration */
TIM_EncoderInitStruct->EncoderMode = LL_TIM_ENCODERMODE_X2_TI1;
TIM_EncoderInitStruct->IC1Polarity = LL_TIM_IC_POLARITY_RISING;
TIM_EncoderInitStruct->IC1ActiveInput = LL_TIM_ACTIVEINPUT_DIRECTTI;
TIM_EncoderInitStruct->IC1Prescaler = LL_TIM_ICPSC_DIV1;
TIM_EncoderInitStruct->IC1Filter = LL_TIM_IC_FILTER_FDIV1;
TIM_EncoderInitStruct->IC2Polarity = LL_TIM_IC_POLARITY_RISING;
TIM_EncoderInitStruct->IC2ActiveInput = LL_TIM_ACTIVEINPUT_DIRECTTI;
TIM_EncoderInitStruct->IC2Prescaler = LL_TIM_ICPSC_DIV1;
TIM_EncoderInitStruct->IC2Filter = LL_TIM_IC_FILTER_FDIV1;
}
/**
* @brief Configure the encoder interface of the timer instance.
* @param TIMx Timer Instance
* @param TIM_EncoderInitStruct pointer to a @ref LL_TIM_ENCODER_InitTypeDef structure (TIMx encoder interface configuration data structure)
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_TIM_ENCODER_Init(TIM_TypeDef* TIMx, LL_TIM_ENCODER_InitTypeDef* TIM_EncoderInitStruct)
{
uint32_t tmpccmr1 = 0U;
uint32_t tmpccer = 0U;
/* Check the parameters */
assert_param(IS_TIM_ENCODER_INTERFACE_INSTANCE(TIMx));
assert_param(IS_LL_TIM_ENCODERMODE(TIM_EncoderInitStruct->EncoderMode));
assert_param(IS_LL_TIM_IC_POLARITY_ENCODER(TIM_EncoderInitStruct->IC1Polarity));
assert_param(IS_LL_TIM_ACTIVEINPUT(TIM_EncoderInitStruct->IC1ActiveInput));
assert_param(IS_LL_TIM_ICPSC(TIM_EncoderInitStruct->IC1Prescaler));
assert_param(IS_LL_TIM_IC_FILTER(TIM_EncoderInitStruct->IC1Filter));
assert_param(IS_LL_TIM_IC_POLARITY_ENCODER(TIM_EncoderInitStruct->IC2Polarity));
assert_param(IS_LL_TIM_ACTIVEINPUT(TIM_EncoderInitStruct->IC2ActiveInput));
assert_param(IS_LL_TIM_ICPSC(TIM_EncoderInitStruct->IC2Prescaler));
assert_param(IS_LL_TIM_IC_FILTER(TIM_EncoderInitStruct->IC2Filter));
/* Disable the CC1 and CC2: Reset the CC1E and CC2E Bits */
TIMx->CCER &= (uint32_t)~(TIM_CCER_CC1E | TIM_CCER_CC2E);
/* Get the TIMx CCMR1 register value */
tmpccmr1 = LL_TIM_ReadReg(TIMx, CCMR1);
/* Get the TIMx CCER register value */
tmpccer = LL_TIM_ReadReg(TIMx, CCER);
/* Configure TI1 */
tmpccmr1 &= (uint32_t)~(TIM_CCMR1_CC1S | TIM_CCMR1_IC1F | TIM_CCMR1_IC1PSC);
tmpccmr1 |= (uint32_t)(TIM_EncoderInitStruct->IC1ActiveInput >> 16U);
tmpccmr1 |= (uint32_t)(TIM_EncoderInitStruct->IC1Filter >> 16U);
tmpccmr1 |= (uint32_t)(TIM_EncoderInitStruct->IC1Prescaler >> 16U);
/* Configure TI2 */
tmpccmr1 &= (uint32_t)~(TIM_CCMR1_CC2S | TIM_CCMR1_IC2F | TIM_CCMR1_IC2PSC);
tmpccmr1 |= (uint32_t)(TIM_EncoderInitStruct->IC2ActiveInput >> 8U);
tmpccmr1 |= (uint32_t)(TIM_EncoderInitStruct->IC2Filter >> 8U);
tmpccmr1 |= (uint32_t)(TIM_EncoderInitStruct->IC2Prescaler >> 8U);
/* Set TI1 and TI2 polarity and enable TI1 and TI2 */
tmpccer &= (uint32_t)~(TIM_CCER_CC1P | TIM_CCER_CC1NP | TIM_CCER_CC2P | TIM_CCER_CC2NP);
tmpccer |= (uint32_t)(TIM_EncoderInitStruct->IC1Polarity);
tmpccer |= (uint32_t)(TIM_EncoderInitStruct->IC2Polarity << 4U);
tmpccer |= (uint32_t)(TIM_CCER_CC1E | TIM_CCER_CC2E);
/* Set encoder mode */
LL_TIM_SetEncoderMode(TIMx, TIM_EncoderInitStruct->EncoderMode);
/* Write to TIMx CCMR1 */
LL_TIM_WriteReg(TIMx, CCMR1, tmpccmr1);
/* Write to TIMx CCER */
LL_TIM_WriteReg(TIMx, CCER, tmpccer);
return SUCCESS;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup TIM_LL_Private_Functions TIM Private Functions
* @brief Private functions
* @{
*/
/**
* @brief Configure the TIMx output channel 1.
* @param TIMx Timer Instance
* @param TIM_OCInitStruct pointer to the the TIMx output channel 1 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus OC1Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct)
{
uint32_t tmpccmr1 = 0U;
uint32_t tmpccer = 0U;
uint32_t tmpcr2 = 0U;
/* Check the parameters */
assert_param(IS_TIM_CC1_INSTANCE(TIMx));
assert_param(IS_LL_TIM_OCMODE(TIM_OCInitStruct->OCMode));
assert_param(IS_LL_TIM_OCSTATE(TIM_OCInitStruct->OCState));
assert_param(IS_LL_TIM_OCPOLARITY(TIM_OCInitStruct->OCPolarity));
/* Disable the Channel 1: Reset the CC1E Bit */
CLEAR_BIT(TIMx->CCER, TIM_CCER_CC1E);
/* Get the TIMx CCER register value */
tmpccer = LL_TIM_ReadReg(TIMx, CCER);
/* Get the TIMx CR2 register value */
tmpcr2 = LL_TIM_ReadReg(TIMx, CR2);
/* Get the TIMx CCMR1 register value */
tmpccmr1 = LL_TIM_ReadReg(TIMx, CCMR1);
/* Reset Capture/Compare selection Bits */
CLEAR_BIT(tmpccmr1, TIM_CCMR1_CC1S);
/* Set the Output Compare Mode */
MODIFY_REG(tmpccmr1, TIM_CCMR1_OC1M, TIM_OCInitStruct->OCMode);
/* Set the Output Compare Polarity */
MODIFY_REG(tmpccer, TIM_CCER_CC1P, TIM_OCInitStruct->OCPolarity);
/* Set the Output State */
MODIFY_REG(tmpccer, TIM_CCER_CC1E, TIM_OCInitStruct->OCState);
/* Write to TIMx CR2 */
LL_TIM_WriteReg(TIMx, CR2, tmpcr2);
/* Write to TIMx CCMR1 */
LL_TIM_WriteReg(TIMx, CCMR1, tmpccmr1);
/* Set the Capture Compare Register value */
LL_TIM_OC_SetCompareCH1(TIMx, TIM_OCInitStruct->CompareValue);
/* Write to TIMx CCER */
LL_TIM_WriteReg(TIMx, CCER, tmpccer);
return SUCCESS;
}
/**
* @brief Configure the TIMx output channel 2.
* @param TIMx Timer Instance
* @param TIM_OCInitStruct pointer to the the TIMx output channel 2 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus OC2Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct)
{
uint32_t tmpccmr1 = 0U;
uint32_t tmpccer = 0U;
uint32_t tmpcr2 = 0U;
/* Check the parameters */
assert_param(IS_TIM_CC2_INSTANCE(TIMx));
assert_param(IS_LL_TIM_OCMODE(TIM_OCInitStruct->OCMode));
assert_param(IS_LL_TIM_OCSTATE(TIM_OCInitStruct->OCState));
assert_param(IS_LL_TIM_OCPOLARITY(TIM_OCInitStruct->OCPolarity));
/* Disable the Channel 2: Reset the CC2E Bit */
CLEAR_BIT(TIMx->CCER, TIM_CCER_CC2E);
/* Get the TIMx CCER register value */
tmpccer = LL_TIM_ReadReg(TIMx, CCER);
/* Get the TIMx CR2 register value */
tmpcr2 = LL_TIM_ReadReg(TIMx, CR2);
/* Get the TIMx CCMR1 register value */
tmpccmr1 = LL_TIM_ReadReg(TIMx, CCMR1);
/* Reset Capture/Compare selection Bits */
CLEAR_BIT(tmpccmr1, TIM_CCMR1_CC2S);
/* Select the Output Compare Mode */
MODIFY_REG(tmpccmr1, TIM_CCMR1_OC2M, TIM_OCInitStruct->OCMode << 8U);
/* Set the Output Compare Polarity */
MODIFY_REG(tmpccer, TIM_CCER_CC2P, TIM_OCInitStruct->OCPolarity<< 4U);
/* Set the Output State */
MODIFY_REG(tmpccer, TIM_CCER_CC2E, TIM_OCInitStruct->OCState << 4U);
/* Write to TIMx CR2 */
LL_TIM_WriteReg(TIMx, CR2, tmpcr2);
/* Write to TIMx CCMR1 */
LL_TIM_WriteReg(TIMx, CCMR1, tmpccmr1);
/* Set the Capture Compare Register value */
LL_TIM_OC_SetCompareCH2(TIMx, TIM_OCInitStruct->CompareValue);
/* Write to TIMx CCER */
LL_TIM_WriteReg(TIMx, CCER, tmpccer);
return SUCCESS;
}
/**
* @brief Configure the TIMx output channel 3.
* @param TIMx Timer Instance
* @param TIM_OCInitStruct pointer to the the TIMx output channel 3 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus OC3Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct)
{
uint32_t tmpccmr2 = 0U;
uint32_t tmpccer = 0U;
uint32_t tmpcr2 = 0U;
/* Check the parameters */
assert_param(IS_TIM_CC3_INSTANCE(TIMx));
assert_param(IS_LL_TIM_OCMODE(TIM_OCInitStruct->OCMode));
assert_param(IS_LL_TIM_OCSTATE(TIM_OCInitStruct->OCState));
assert_param(IS_LL_TIM_OCPOLARITY(TIM_OCInitStruct->OCPolarity));
/* Disable the Channel 3: Reset the CC3E Bit */
CLEAR_BIT(TIMx->CCER, TIM_CCER_CC3E);
/* Get the TIMx CCER register value */
tmpccer = LL_TIM_ReadReg(TIMx, CCER);
/* Get the TIMx CR2 register value */
tmpcr2 = LL_TIM_ReadReg(TIMx, CR2);
/* Get the TIMx CCMR2 register value */
tmpccmr2 = LL_TIM_ReadReg(TIMx, CCMR2);
/* Reset Capture/Compare selection Bits */
CLEAR_BIT(tmpccmr2, TIM_CCMR2_CC3S);
/* Select the Output Compare Mode */
MODIFY_REG(tmpccmr2, TIM_CCMR2_OC3M, TIM_OCInitStruct->OCMode);
/* Set the Output Compare Polarity */
MODIFY_REG(tmpccer, TIM_CCER_CC3P, TIM_OCInitStruct->OCPolarity << 8U);
/* Set the Output State */
MODIFY_REG(tmpccer, TIM_CCER_CC3E, TIM_OCInitStruct->OCState << 8U);
/* Write to TIMx CR2 */
LL_TIM_WriteReg(TIMx, CR2, tmpcr2);
/* Write to TIMx CCMR2 */
LL_TIM_WriteReg(TIMx, CCMR2, tmpccmr2);
/* Set the Capture Compare Register value */
LL_TIM_OC_SetCompareCH3(TIMx, TIM_OCInitStruct->CompareValue);
/* Write to TIMx CCER */
LL_TIM_WriteReg(TIMx, CCER, tmpccer);
return SUCCESS;
}
/**
* @brief Configure the TIMx output channel 4.
* @param TIMx Timer Instance
* @param TIM_OCInitStruct pointer to the the TIMx output channel 4 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus OC4Config(TIM_TypeDef* TIMx, LL_TIM_OC_InitTypeDef* TIM_OCInitStruct)
{
uint32_t tmpccmr2 = 0U;
uint32_t tmpccer = 0U;
uint32_t tmpcr2 = 0U;
/* Check the parameters */
assert_param(IS_TIM_CC4_INSTANCE(TIMx));
assert_param(IS_LL_TIM_OCMODE(TIM_OCInitStruct->OCMode));
assert_param(IS_LL_TIM_OCSTATE(TIM_OCInitStruct->OCState));
assert_param(IS_LL_TIM_OCPOLARITY(TIM_OCInitStruct->OCPolarity));
/* Disable the Channel 4: Reset the CC4E Bit */
CLEAR_BIT(TIMx->CCER, TIM_CCER_CC4E);
/* Get the TIMx CCER register value */
tmpccer = LL_TIM_ReadReg(TIMx, CCER);
/* Get the TIMx CR2 register value */
tmpcr2 = LL_TIM_ReadReg(TIMx, CR2);
/* Get the TIMx CCMR2 register value */
tmpccmr2 = LL_TIM_ReadReg(TIMx, CCMR2);
/* Reset Capture/Compare selection Bits */
CLEAR_BIT(tmpccmr2, TIM_CCMR2_CC4S);
/* Select the Output Compare Mode */
MODIFY_REG(tmpccmr2, TIM_CCMR2_OC4M, TIM_OCInitStruct->OCMode << 8U);
/* Set the Output Compare Polarity */
MODIFY_REG(tmpccer, TIM_CCER_CC4P, TIM_OCInitStruct->OCPolarity << 12U);
/* Set the Output State */
MODIFY_REG(tmpccer, TIM_CCER_CC4E, TIM_OCInitStruct->OCState << 12U);
/* Write to TIMx CR2 */
LL_TIM_WriteReg(TIMx, CR2, tmpcr2);
/* Write to TIMx CCMR2 */
LL_TIM_WriteReg(TIMx, CCMR2, tmpccmr2);
/* Set the Capture Compare Register value */
LL_TIM_OC_SetCompareCH4(TIMx, TIM_OCInitStruct->CompareValue);
/* Write to TIMx CCER */
LL_TIM_WriteReg(TIMx, CCER, tmpccer);
return SUCCESS;
}
/**
* @brief Configure the TIMx input channel 1.
* @param TIMx Timer Instance
* @param TIM_ICInitStruct pointer to the the TIMx input channel 1 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus IC1Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct)
{
/* Check the parameters */
assert_param(IS_TIM_CC1_INSTANCE(TIMx));
assert_param(IS_LL_TIM_IC_POLARITY(TIM_ICInitStruct->ICPolarity));
assert_param(IS_LL_TIM_ACTIVEINPUT(TIM_ICInitStruct->ICActiveInput));
assert_param(IS_LL_TIM_ICPSC(TIM_ICInitStruct->ICPrescaler));
assert_param(IS_LL_TIM_IC_FILTER(TIM_ICInitStruct->ICFilter));
/* Disable the Channel 1: Reset the CC1E Bit */
TIMx->CCER &= (uint32_t)~TIM_CCER_CC1E;
/* Select the Input and set the filter and the prescaler value */
MODIFY_REG(TIMx->CCMR1,
(TIM_CCMR1_CC1S | TIM_CCMR1_IC1F | TIM_CCMR1_IC1PSC),
(TIM_ICInitStruct->ICActiveInput | TIM_ICInitStruct->ICFilter | TIM_ICInitStruct->ICPrescaler) >> 16U);
/* Select the Polarity and set the CC1E Bit */
MODIFY_REG(TIMx->CCER,
(TIM_CCER_CC1P | TIM_CCER_CC1NP),
(TIM_ICInitStruct->ICPolarity | TIM_CCER_CC1E));
return SUCCESS;
}
/**
* @brief Configure the TIMx input channel 2.
* @param TIMx Timer Instance
* @param TIM_ICInitStruct pointer to the the TIMx input channel 2 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus IC2Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct)
{
/* Check the parameters */
assert_param(IS_TIM_CC2_INSTANCE(TIMx));
assert_param(IS_LL_TIM_IC_POLARITY(TIM_ICInitStruct->ICPolarity));
assert_param(IS_LL_TIM_ACTIVEINPUT(TIM_ICInitStruct->ICActiveInput));
assert_param(IS_LL_TIM_ICPSC(TIM_ICInitStruct->ICPrescaler));
assert_param(IS_LL_TIM_IC_FILTER(TIM_ICInitStruct->ICFilter));
/* Disable the Channel 2: Reset the CC2E Bit */
TIMx->CCER &= (uint32_t)~TIM_CCER_CC2E;
/* Select the Input and set the filter and the prescaler value */
MODIFY_REG(TIMx->CCMR1,
(TIM_CCMR1_CC2S | TIM_CCMR1_IC2F | TIM_CCMR1_IC2PSC),
(TIM_ICInitStruct->ICActiveInput | TIM_ICInitStruct->ICFilter | TIM_ICInitStruct->ICPrescaler) >> 8U);
/* Select the Polarity and set the CC2E Bit */
MODIFY_REG(TIMx->CCER,
(TIM_CCER_CC2P | TIM_CCER_CC2NP),
((TIM_ICInitStruct->ICPolarity << 4U) | TIM_CCER_CC2E) );
return SUCCESS;
}
/**
* @brief Configure the TIMx input channel 3.
* @param TIMx Timer Instance
* @param TIM_ICInitStruct pointer to the the TIMx input channel 3 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus IC3Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct)
{
/* Check the parameters */
assert_param(IS_TIM_CC3_INSTANCE(TIMx));
assert_param(IS_LL_TIM_IC_POLARITY(TIM_ICInitStruct->ICPolarity));
assert_param(IS_LL_TIM_ACTIVEINPUT(TIM_ICInitStruct->ICActiveInput));
assert_param(IS_LL_TIM_ICPSC(TIM_ICInitStruct->ICPrescaler));
assert_param(IS_LL_TIM_IC_FILTER(TIM_ICInitStruct->ICFilter));
/* Disable the Channel 3: Reset the CC3E Bit */
TIMx->CCER &= (uint32_t)~TIM_CCER_CC3E;
/* Select the Input and set the filter and the prescaler value */
MODIFY_REG(TIMx->CCMR2,
(TIM_CCMR2_CC3S | TIM_CCMR2_IC3F | TIM_CCMR2_IC3PSC),
(TIM_ICInitStruct->ICActiveInput | TIM_ICInitStruct->ICFilter | TIM_ICInitStruct->ICPrescaler) >> 16U);
/* Select the Polarity and set the CC3E Bit */
MODIFY_REG(TIMx->CCER,
(TIM_CCER_CC3P | TIM_CCER_CC3NP),
((TIM_ICInitStruct->ICPolarity << 8U) | TIM_CCER_CC3E) );
return SUCCESS;
}
/**
* @brief Configure the TIMx input channel 4.
* @param TIMx Timer Instance
* @param TIM_ICInitStruct pointer to the the TIMx input channel 4 configuration data structure
* @retval An ErrorStatus enumeration value:
* - SUCCESS: TIMx registers are de-initialized
* - ERROR: not applicable
*/
static ErrorStatus IC4Config(TIM_TypeDef* TIMx, LL_TIM_IC_InitTypeDef* TIM_ICInitStruct)
{
/* Check the parameters */
assert_param(IS_TIM_CC4_INSTANCE(TIMx));
assert_param(IS_LL_TIM_IC_POLARITY(TIM_ICInitStruct->ICPolarity));
assert_param(IS_LL_TIM_ACTIVEINPUT(TIM_ICInitStruct->ICActiveInput));
assert_param(IS_LL_TIM_ICPSC(TIM_ICInitStruct->ICPrescaler));
assert_param(IS_LL_TIM_IC_FILTER(TIM_ICInitStruct->ICFilter));
/* Disable the Channel 4: Reset the CC4E Bit */
TIMx->CCER &= (uint32_t)~TIM_CCER_CC4E;
/* Select the Input and set the filter and the prescaler value */
MODIFY_REG(TIMx->CCMR2,
(TIM_CCMR2_CC4S | TIM_CCMR2_IC4F | TIM_CCMR2_IC4PSC),
(TIM_ICInitStruct->ICActiveInput | TIM_ICInitStruct->ICFilter | TIM_ICInitStruct->ICPrescaler) >> 8U);
/* Select the Polarity and set the CC2E Bit */
MODIFY_REG(TIMx->CCER,
(TIM_CCER_CC4P | TIM_CCER_CC4NP),
((TIM_ICInitStruct->ICPolarity << 12U) | TIM_CCER_CC4E) );
return SUCCESS;
}
/**
* @}
*/
/**
* @}
*/
#endif /* TIM1 || TIM3 || TIM21 || TIM22 || TIM6 || TIM7 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_usart.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief USART LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_usart.h"
#include "stm32l0xx_ll_rcc.h"
#include "stm32l0xx_ll_bus.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (USART1) || defined (USART2) || defined (USART4) || defined (USART5)
/** @addtogroup USART_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @addtogroup USART_LL_Private_Constants
* @{
*/
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup USART_LL_Private_Macros
* @{
*/
/* __BAUDRATE__ The maximum Baud Rate is derived from the maximum clock available
* divided by the smallest oversampling used on the USART (i.e. 8) */
#define IS_LL_USART_BAUDRATE(__BAUDRATE__) ((__BAUDRATE__) <= 4000000U)
#define IS_LL_USART_DIRECTION(__VALUE__) (((__VALUE__) == LL_USART_DIRECTION_NONE) \
|| ((__VALUE__) == LL_USART_DIRECTION_RX) \
|| ((__VALUE__) == LL_USART_DIRECTION_TX) \
|| ((__VALUE__) == LL_USART_DIRECTION_TX_RX))
#define IS_LL_USART_PARITY(__VALUE__) (((__VALUE__) == LL_USART_PARITY_NONE) \
|| ((__VALUE__) == LL_USART_PARITY_EVEN) \
|| ((__VALUE__) == LL_USART_PARITY_ODD))
#define IS_LL_USART_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_USART_DATAWIDTH_7B) \
|| ((__VALUE__) == LL_USART_DATAWIDTH_8B) \
|| ((__VALUE__) == LL_USART_DATAWIDTH_9B))
#define IS_LL_USART_OVERSAMPLING(__VALUE__) (((__VALUE__) == LL_USART_OVERSAMPLING_16) \
|| ((__VALUE__) == LL_USART_OVERSAMPLING_8))
#define IS_LL_USART_LASTBITCLKOUTPUT(__VALUE__) (((__VALUE__) == LL_USART_LASTCLKPULSE_NO_OUTPUT) \
|| ((__VALUE__) == LL_USART_LASTCLKPULSE_OUTPUT))
#define IS_LL_USART_CLOCKPHASE(__VALUE__) (((__VALUE__) == LL_USART_PHASE_1EDGE) \
|| ((__VALUE__) == LL_USART_PHASE_2EDGE))
#define IS_LL_USART_CLOCKPOLARITY(__VALUE__) (((__VALUE__) == LL_USART_POLARITY_LOW) \
|| ((__VALUE__) == LL_USART_POLARITY_HIGH))
#define IS_LL_USART_CLOCKOUTPUT(__VALUE__) (((__VALUE__) == LL_USART_CLOCK_DISABLE) \
|| ((__VALUE__) == LL_USART_CLOCK_ENABLE))
#define IS_LL_USART_STOPBITS(__VALUE__) (((__VALUE__) == LL_USART_STOPBITS_0_5) \
|| ((__VALUE__) == LL_USART_STOPBITS_1) \
|| ((__VALUE__) == LL_USART_STOPBITS_1_5) \
|| ((__VALUE__) == LL_USART_STOPBITS_2))
#define IS_LL_USART_HWCONTROL(__VALUE__) (((__VALUE__) == LL_USART_HWCONTROL_NONE) \
|| ((__VALUE__) == LL_USART_HWCONTROL_RTS) \
|| ((__VALUE__) == LL_USART_HWCONTROL_CTS) \
|| ((__VALUE__) == LL_USART_HWCONTROL_RTS_CTS))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup USART_LL_Exported_Functions
* @{
*/
/** @addtogroup USART_LL_EF_Init
* @{
*/
/**
* @brief De-initialize USART registers (Registers restored to their default values).
* @param USARTx USART Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: USART registers are de-initialized
* - ERROR: USART registers are not de-initialized
*/
ErrorStatus LL_USART_DeInit(USART_TypeDef *USARTx)
{
ErrorStatus status = SUCCESS;
/* Check the parameters */
assert_param(IS_UART_INSTANCE(USARTx));
#if defined(USART1)
if (USARTx == USART1)
{
/* Force reset of USART clock */
LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_USART1);
/* Release reset of USART clock */
LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_USART1);
}
#endif
#if defined(USART1)
else if (USARTx == USART2)
#else
if (USARTx == USART2)
#endif
{
/* Force reset of USART clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART2);
/* Release reset of USART clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART2);
}
#if defined(USART4)
else if (USARTx == USART4)
{
/* Force reset of USART clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART4);
/* Release reset of USART clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART4);
}
#endif /* USART4 */
#if defined(USART5)
else if (USARTx == USART5)
{
/* Force reset of USART clock */
LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_USART5);
/* Release reset of USART clock */
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_USART5);
}
#endif /* USART5 */
else
{
status = ERROR;
}
return (status);
}
/**
* @brief Initialize USART registers according to the specified
* parameters in USART_InitStruct.
* @note As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),
* USART IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
* @note Baud rate value stored in USART_InitStruct BaudRate field, should be valid (different from 0).
* @param USARTx USART Instance
* @param USART_InitStruct: pointer to a LL_USART_InitTypeDef structure
* that contains the configuration information for the specified USART peripheral.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: USART registers are initialized according to USART_InitStruct content
* - ERROR: Problem occurred during USART Registers initialization
*/
ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, LL_USART_InitTypeDef *USART_InitStruct)
{
ErrorStatus status = ERROR;
uint32_t periphclk = LL_RCC_PERIPH_FREQUENCY_NO;
#if (defined(USART4) || defined(USART5))
LL_RCC_ClocksTypeDef RCC_Clocks;
#endif
/* Check the parameters */
assert_param(IS_UART_INSTANCE(USARTx));
assert_param(IS_LL_USART_BAUDRATE(USART_InitStruct->BaudRate));
assert_param(IS_LL_USART_DATAWIDTH(USART_InitStruct->DataWidth));
assert_param(IS_LL_USART_STOPBITS(USART_InitStruct->StopBits));
assert_param(IS_LL_USART_PARITY(USART_InitStruct->Parity));
assert_param(IS_LL_USART_DIRECTION(USART_InitStruct->TransferDirection));
assert_param(IS_LL_USART_HWCONTROL(USART_InitStruct->HardwareFlowControl));
assert_param(IS_LL_USART_OVERSAMPLING(USART_InitStruct->OverSampling));
/* USART needs to be in disabled state, in order to be able to configure some bits in
CRx registers */
if (LL_USART_IsEnabled(USARTx) == 0U)
{
/*---------------------------- USART CR1 Configuration -----------------------
* Configure USARTx CR1 (USART Word Length, Parity, Mode and Oversampling bits) with parameters:
* - DataWidth: USART_CR1_M bits according to USART_InitStruct->DataWidth value
* - Parity: USART_CR1_PCE, USART_CR1_PS bits according to USART_InitStruct->Parity value
* - TransferDirection: USART_CR1_TE, USART_CR1_RE bits according to USART_InitStruct->TransferDirection value
* - Oversampling: USART_CR1_OVER8 bit according to USART_InitStruct->OverSampling value.
*/
MODIFY_REG(USARTx->CR1,
(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS |
USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8),
(USART_InitStruct->DataWidth | USART_InitStruct->Parity |
USART_InitStruct->TransferDirection | USART_InitStruct->OverSampling));
/*---------------------------- USART CR2 Configuration -----------------------
* Configure USARTx CR2 (Stop bits) with parameters:
* - Stop Bits: USART_CR2_STOP bits according to USART_InitStruct->StopBits value.
* - CLKEN, CPOL, CPHA and LBCL bits are to be configured using LL_USART_ClockInit().
*/
LL_USART_SetStopBitsLength(USARTx, USART_InitStruct->StopBits);
/*---------------------------- USART CR3 Configuration -----------------------
* Configure USARTx CR3 (Hardware Flow Control) with parameters:
* - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to USART_InitStruct->HardwareFlowControl value.
*/
LL_USART_SetHWFlowCtrl(USARTx, USART_InitStruct->HardwareFlowControl);
/*---------------------------- USART BRR Configuration -----------------------
* Retrieve Clock frequency used for USART Peripheral
*/
#if defined(USART1)
if (USARTx == USART1)
{
periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART1_CLKSOURCE);
}
#endif
#if defined(USART1)
else if (USARTx == USART2)
#else
if (USARTx == USART2)
#endif
{
periphclk = LL_RCC_GetUSARTClockFreq(LL_RCC_USART2_CLKSOURCE);
}
#if defined(USART4)
else if (USARTx == USART4)
{
/* USART4 clock is PCLK1 */
LL_RCC_GetSystemClocksFreq(&RCC_Clocks);
periphclk = RCC_Clocks.PCLK1_Frequency;
}
#endif
#if defined(USART5)
else if (USARTx == USART5)
{
/* USART5 clock is PCLK1 */
LL_RCC_GetSystemClocksFreq(&RCC_Clocks);
periphclk = RCC_Clocks.PCLK1_Frequency;
}
#endif
else
{
/* Nothing to do, as error code is already assigned to ERROR value */
}
/* Configure the USART Baud Rate :
- valid baud rate value (different from 0) is required
- Peripheral clock as returned by RCC service, should be valid (different from 0).
*/
if ((periphclk != LL_RCC_PERIPH_FREQUENCY_NO)
&& (USART_InitStruct->BaudRate != 0U))
{
status = SUCCESS;
LL_USART_SetBaudRate(USARTx,
periphclk,
USART_InitStruct->OverSampling,
USART_InitStruct->BaudRate);
}
}
/* Endif (=> USART not in Disabled state => return ERROR) */
return (status);
}
/**
* @brief Set each @ref LL_USART_InitTypeDef field to default value.
* @param USART_InitStruct: pointer to a @ref LL_USART_InitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_USART_StructInit(LL_USART_InitTypeDef *USART_InitStruct)
{
/* Set USART_InitStruct fields to default values */
USART_InitStruct->BaudRate = 9600U;
USART_InitStruct->DataWidth = LL_USART_DATAWIDTH_8B;
USART_InitStruct->StopBits = LL_USART_STOPBITS_1;
USART_InitStruct->Parity = LL_USART_PARITY_NONE ;
USART_InitStruct->TransferDirection = LL_USART_DIRECTION_TX_RX;
USART_InitStruct->HardwareFlowControl = LL_USART_HWCONTROL_NONE;
USART_InitStruct->OverSampling = LL_USART_OVERSAMPLING_16;
}
/**
* @brief Initialize USART Clock related settings according to the
* specified parameters in the USART_ClockInitStruct.
* @note As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),
* USART IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
* @param USARTx USART Instance
* @param USART_ClockInitStruct: pointer to a @ref LL_USART_ClockInitTypeDef structure
* that contains the Clock configuration information for the specified USART peripheral.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: USART registers related to Clock settings are initialized according to USART_ClockInitStruct content
* - ERROR: Problem occurred during USART Registers initialization
*/
ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
{
ErrorStatus status = SUCCESS;
/* Check USART Instance and Clock signal output parameters */
assert_param(IS_UART_INSTANCE(USARTx));
assert_param(IS_LL_USART_CLOCKOUTPUT(USART_ClockInitStruct->ClockOutput));
/* USART needs to be in disabled state, in order to be able to configure some bits in
CRx registers */
if (LL_USART_IsEnabled(USARTx) == 0U)
{
/*---------------------------- USART CR2 Configuration -----------------------*/
/* If Clock signal has to be output */
if (USART_ClockInitStruct->ClockOutput == LL_USART_CLOCK_DISABLE)
{
/* Deactivate Clock signal delivery :
* - Disable Clock Output: USART_CR2_CLKEN cleared
*/
LL_USART_DisableSCLKOutput(USARTx);
}
else
{
/* Ensure USART instance is USART capable */
assert_param(IS_USART_INSTANCE(USARTx));
/* Check clock related parameters */
assert_param(IS_LL_USART_CLOCKPOLARITY(USART_ClockInitStruct->ClockPolarity));
assert_param(IS_LL_USART_CLOCKPHASE(USART_ClockInitStruct->ClockPhase));
assert_param(IS_LL_USART_LASTBITCLKOUTPUT(USART_ClockInitStruct->LastBitClockPulse));
/*---------------------------- USART CR2 Configuration -----------------------
* Configure USARTx CR2 (Clock signal related bits) with parameters:
* - Enable Clock Output: USART_CR2_CLKEN set
* - Clock Polarity: USART_CR2_CPOL bit according to USART_ClockInitStruct->ClockPolarity value
* - Clock Phase: USART_CR2_CPHA bit according to USART_ClockInitStruct->ClockPhase value
* - Last Bit Clock Pulse Output: USART_CR2_LBCL bit according to USART_ClockInitStruct->LastBitClockPulse value.
*/
MODIFY_REG(USARTx->CR2,
USART_CR2_CLKEN | USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_LBCL,
USART_CR2_CLKEN | USART_ClockInitStruct->ClockPolarity |
USART_ClockInitStruct->ClockPhase | USART_ClockInitStruct->LastBitClockPulse);
}
}
/* Else (USART not in Disabled state => return ERROR */
else
{
status = ERROR;
}
return (status);
}
/**
* @brief Set each field of a @ref LL_USART_ClockInitTypeDef type structure to default value.
* @param USART_ClockInitStruct: pointer to a @ref LL_USART_ClockInitTypeDef structure
* whose fields will be set to default values.
* @retval None
*/
void LL_USART_ClockStructInit(LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
{
/* Set LL_USART_ClockInitStruct fields with default values */
USART_ClockInitStruct->ClockOutput = LL_USART_CLOCK_DISABLE;
USART_ClockInitStruct->ClockPolarity = LL_USART_POLARITY_LOW; /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
USART_ClockInitStruct->ClockPhase = LL_USART_PHASE_1EDGE; /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
USART_ClockInitStruct->LastBitClockPulse = LL_USART_LASTCLKPULSE_NO_OUTPUT; /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* USART1 || USART2 || USART4 || USART5 */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_utils.c
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief UTILS LL module driver.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx_ll_rcc.h"
#include "stm32l0xx_ll_utils.h"
#include "stm32l0xx_ll_system.h"
#include "stm32l0xx_ll_pwr.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
/** @addtogroup UTILS_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @addtogroup UTILS_LL_Private_Constants
* @{
*/
#define UTILS_MAX_FREQUENCY_SCALE1 ((uint32_t)32000000U) /*!< Maximum frequency for system clock at power scale1, in Hz */
#define UTILS_MAX_FREQUENCY_SCALE2 ((uint32_t)16000000U) /*!< Maximum frequency for system clock at power scale2, in Hz */
#define UTILS_MAX_FREQUENCY_SCALE3 ((uint32_t)4000000U) /*!< Maximum frequency for system clock at power scale3, in Hz */
/* Defines used for PLL range */
#define UTILS_PLLVCO_OUTPUT_SCALE1 ((uint32_t)96000000U) /*!< Frequency max for PLLVCO output at power scale1, in Hz */
#define UTILS_PLLVCO_OUTPUT_SCALE2 ((uint32_t)48000000U) /*!< Frequency max for PLLVCO output at power scale2, in Hz */
#define UTILS_PLLVCO_OUTPUT_SCALE3 ((uint32_t)24000000U) /*!< Frequency max for PLLVCO output at power scale3, in Hz */
/* Defines used for HSE range */
#define UTILS_HSE_FREQUENCY_MIN ((uint32_t)1000000U) /*!< Frequency min for HSE frequency, in Hz */
#define UTILS_HSE_FREQUENCY_MAX ((uint32_t)24000000U) /*!< Frequency max for HSE frequency, in Hz */
/* Defines used for FLASH latency according to HCLK Frequency */
#define UTILS_SCALE1_LATENCY1_FREQ ((uint32_t)16000000U) /*!< HCLK frequency to set FLASH latency 1 in power scale 1 */
#define UTILS_SCALE2_LATENCY1_FREQ ((uint32_t)8000000U) /*!< HCLK frequency to set FLASH latency 1 in power scale 2 */
#define UTILS_SCALE3_LATENCY1_FREQ ((uint32_t)2000000U) /*!< HCLK frequency to set FLASH latency 1 in power scale 3 */
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup UTILS_LL_Private_Macros
* @{
*/
#define IS_LL_UTILS_SYSCLK_DIV(__VALUE__) (((__VALUE__) == LL_RCC_SYSCLK_DIV_1) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_2) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_4) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_8) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_16) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_64) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_128) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_256) \
|| ((__VALUE__) == LL_RCC_SYSCLK_DIV_512))
#define IS_LL_UTILS_APB1_DIV(__VALUE__) (((__VALUE__) == LL_RCC_APB1_DIV_1) \
|| ((__VALUE__) == LL_RCC_APB1_DIV_2) \
|| ((__VALUE__) == LL_RCC_APB1_DIV_4) \
|| ((__VALUE__) == LL_RCC_APB1_DIV_8) \
|| ((__VALUE__) == LL_RCC_APB1_DIV_16))
#define IS_LL_UTILS_APB2_DIV(__VALUE__) (((__VALUE__) == LL_RCC_APB2_DIV_1) \
|| ((__VALUE__) == LL_RCC_APB2_DIV_2) \
|| ((__VALUE__) == LL_RCC_APB2_DIV_4) \
|| ((__VALUE__) == LL_RCC_APB2_DIV_8) \
|| ((__VALUE__) == LL_RCC_APB2_DIV_16))
#define IS_LL_UTILS_PLLMUL_VALUE(__VALUE__) (((__VALUE__) == LL_RCC_PLL_MUL_3) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_4) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_6) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_8) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_12) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_16) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_24) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_32) \
|| ((__VALUE__) == LL_RCC_PLL_MUL_48))
#define IS_LL_UTILS_PLLDIV_VALUE(__VALUE__) (((__VALUE__) == LL_RCC_PLL_DIV_2) || ((__VALUE__) == LL_RCC_PLL_DIV_3) || \
((__VALUE__) == LL_RCC_PLL_DIV_4))
#define IS_LL_UTILS_PLLVCO_OUTPUT(__VALUE__) ((LL_PWR_GetRegulVoltageScaling() == LL_PWR_REGU_VOLTAGE_SCALE1) ? ((__VALUE__) <= UTILS_PLLVCO_OUTPUT_SCALE1) : \
((LL_PWR_GetRegulVoltageScaling() == LL_PWR_REGU_VOLTAGE_SCALE2) ? ((__VALUE__) <= UTILS_PLLVCO_OUTPUT_SCALE2) : \
((__VALUE__) <= UTILS_PLLVCO_OUTPUT_SCALE3)))
#define IS_LL_UTILS_PLL_FREQUENCY(__VALUE__) ((LL_PWR_GetRegulVoltageScaling() == LL_PWR_REGU_VOLTAGE_SCALE1) ? ((__VALUE__) <= UTILS_MAX_FREQUENCY_SCALE1) : \
((LL_PWR_GetRegulVoltageScaling() == LL_PWR_REGU_VOLTAGE_SCALE2) ? ((__VALUE__) <= UTILS_MAX_FREQUENCY_SCALE2) : \
((__VALUE__) <= UTILS_MAX_FREQUENCY_SCALE3)))
#define IS_LL_UTILS_HSE_BYPASS(__STATE__) (((__STATE__) == LL_UTILS_HSEBYPASS_ON) \
|| ((__STATE__) == LL_UTILS_HSEBYPASS_OFF))
#define IS_LL_UTILS_HSE_FREQUENCY(__FREQUENCY__) (((__FREQUENCY__) >= UTILS_HSE_FREQUENCY_MIN) && ((__FREQUENCY__) <= UTILS_HSE_FREQUENCY_MAX))
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup UTILS_LL_Private_Functions UTILS Private functions
* @{
*/
static uint32_t UTILS_GetPLLOutputFrequency(uint32_t PLL_InputFrequency,
LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct);
static ErrorStatus UTILS_SetFlashLatency(uint32_t Frequency);
static ErrorStatus UTILS_EnablePLLAndSwitchSystem(uint32_t SYSCLK_Frequency, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct);
static ErrorStatus UTILS_PLL_IsBusy(void);
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup UTILS_LL_Exported_Functions
* @{
*/
/** @addtogroup UTILS_LL_EF_DELAY
* @{
*/
/**
* @brief This function configures the Cortex-M SysTick source to have 1ms time base.
* @note When a RTOS is used, it is recommended to avoid changing the Systick
* configuration by calling this function, for a delay use rather osDelay RTOS service.
* @param HCLKFrequency HCLK frequency in Hz
* @note HCLK frequency can be calculated thanks to RCC helper macro or function @ref LL_RCC_GetSystemClocksFreq
* @retval None
*/
void LL_Init1msTick(uint32_t HCLKFrequency)
{
/* Use frequency provided in argument */
LL_InitTick(HCLKFrequency, 1000U);
}
/**
* @brief This function provides accurate delay (in milliseconds) based
* on SysTick counter flag
* @note When a RTOS is used, it is recommended to avoid using blocking delay
* and use rather osDelay service.
* @note To respect 1ms timebase, user should call @ref LL_Init1msTick function which
* will configure Systick to 1ms
* @param Delay specifies the delay time length, in milliseconds.
* @retval None
*/
void LL_mDelay(uint32_t Delay)
{
__IO uint32_t tmp = SysTick->CTRL; /* Clear the COUNTFLAG first */
/* Add this code to indicate that local variable is not used */
((void)tmp);
/* Add a period to guaranty minimum wait */
if (Delay < LL_MAX_DELAY)
{
Delay++;
}
while (Delay)
{
if ((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) != 0U)
{
Delay--;
}
}
}
/**
* @}
*/
/** @addtogroup UTILS_EF_SYSTEM
* @brief System Configuration functions
*
@verbatim
===============================================================================
##### System Configuration functions #####
===============================================================================
[..]
System, AHB and APB buses clocks configuration
(+) The maximum frequency of the SYSCLK, HCLK, PCLK1 and PCLK2 is 32000000 Hz.
@endverbatim
@internal
Depending on the device voltage range, the maximum frequency should be
adapted accordingly:
(++) +----------------------------------------------------------------+
(++) | Wait states | HCLK clock frequency (MHz) |
(++) | |------------------------------------------------|
(++) | (Latency) | voltage range | voltage range |
(++) | | 1.65 V - 3.6 V | 2.0 V - 3.6 V |
(++) | |----------------|---------------|---------------|
(++) | | VCORE = 1.2 V | VCORE = 1.5 V | VCORE = 1.8 V |
(++) |-------------- |----------------|---------------|---------------|
(++) |0WS(1CPU cycle)|0 < HCLK <= 2 |0 < HCLK <= 8 |0 < HCLK <= 16 |
(++) |---------------|----------------|---------------|---------------|
(++) |1WS(2CPU cycle)|2 < HCLK <= 4 |8 < HCLK <= 16 |16 < HCLK <= 32|
(++) +----------------------------------------------------------------+
@endinternal
* @{
*/
/**
* @brief This function sets directly SystemCoreClock CMSIS variable.
* @note Variable can be calculated also through SystemCoreClockUpdate function.
* @param HCLKFrequency HCLK frequency in Hz (can be calculated thanks to RCC helper macro)
* @retval None
*/
void LL_SetSystemCoreClock(uint32_t HCLKFrequency)
{
/* HCLK clock frequency */
SystemCoreClock = HCLKFrequency;
}
/**
* @brief This function configures system clock with HSI as clock source of the PLL
* @note The application need to ensure that PLL is disabled.
* @note Function is based on the following formula:
* - PLL output frequency = ((HSI frequency * PLLMul) / PLLDiv)
* - PLLMul: The application software must set correctly the PLL multiplication factor to avoid exceeding
* - 96 MHz as PLLVCO when the product is in range 1,
* - 48 MHz as PLLVCO when the product is in range 2,
* - 24 MHz when the product is in range 3
* @note FLASH latency can be modified through this function.
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
* the configuration information for the PLL.
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
* the configuration information for the BUS prescalers.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: Max frequency configuration done
* - ERROR: Max frequency configuration not done
*/
ErrorStatus LL_PLL_ConfigSystemClock_HSI(LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct,
LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
{
ErrorStatus status = SUCCESS;
uint32_t pllfreq = 0U;
/* Check if one of the PLL is enabled */
if (UTILS_PLL_IsBusy() == SUCCESS)
{
/* Calculate the new PLL output frequency */
pllfreq = UTILS_GetPLLOutputFrequency(HSI_VALUE, UTILS_PLLInitStruct);
/* Enable HSI if not enabled */
if (LL_RCC_HSI_IsReady() != 1U)
{
LL_RCC_HSI_Enable();
while (LL_RCC_HSI_IsReady() != 1U)
{
/* Wait for HSI ready */
}
}
/* Configure PLL */
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI, UTILS_PLLInitStruct->PLLMul, UTILS_PLLInitStruct->PLLDiv);
/* Enable PLL and switch system clock to PLL */
status = UTILS_EnablePLLAndSwitchSystem(pllfreq, UTILS_ClkInitStruct);
}
else
{
/* Current PLL configuration cannot be modified */
status = ERROR;
}
return status;
}
/**
* @brief This function configures system clock with HSE as clock source of the PLL
* @note The application need to ensure that PLL is disabled.
* @note Function is based on the following formula:
* - PLL output frequency = ((HSE frequency * PLLMul) / PLLDiv)
* - PLLMul: The application software must set correctly the PLL multiplication factor to avoid exceeding
* - 96 MHz as PLLVCO when the product is in range 1,
* - 48 MHz as PLLVCO when the product is in range 2,
* - 24 MHz when the product is in range 3
* @note FLASH latency can be modified through this function.
* @param HSEFrequency Value between Min_Data = 1000000 and Max_Data = 24000000
* @param HSEBypass This parameter can be one of the following values:
* @arg @ref LL_UTILS_HSEBYPASS_ON
* @arg @ref LL_UTILS_HSEBYPASS_OFF
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
* the configuration information for the PLL.
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
* the configuration information for the BUS prescalers.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: Max frequency configuration done
* - ERROR: Max frequency configuration not done
*/
ErrorStatus LL_PLL_ConfigSystemClock_HSE(uint32_t HSEFrequency, uint32_t HSEBypass,
LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
{
ErrorStatus status = SUCCESS;
uint32_t pllfreq = 0U;
/* Check the parameters */
assert_param(IS_LL_UTILS_HSE_FREQUENCY(HSEFrequency));
assert_param(IS_LL_UTILS_HSE_BYPASS(HSEBypass));
/* Check if one of the PLL is enabled */
if (UTILS_PLL_IsBusy() == SUCCESS)
{
/* Calculate the new PLL output frequency */
pllfreq = UTILS_GetPLLOutputFrequency(HSEFrequency, UTILS_PLLInitStruct);
/* Enable HSE if not enabled */
if (LL_RCC_HSE_IsReady() != 1U)
{
/* Check if need to enable HSE bypass feature or not */
if (HSEBypass == LL_UTILS_HSEBYPASS_ON)
{
LL_RCC_HSE_EnableBypass();
}
else
{
LL_RCC_HSE_DisableBypass();
}
/* Enable HSE */
LL_RCC_HSE_Enable();
while (LL_RCC_HSE_IsReady() != 1U)
{
/* Wait for HSE ready */
}
}
/* Configure PLL */
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE, UTILS_PLLInitStruct->PLLMul, UTILS_PLLInitStruct->PLLDiv);
/* Enable PLL and switch system clock to PLL */
status = UTILS_EnablePLLAndSwitchSystem(pllfreq, UTILS_ClkInitStruct);
}
else
{
/* Current PLL configuration cannot be modified */
status = ERROR;
}
return status;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup UTILS_LL_Private_Functions
* @{
*/
/**
* @brief Update number of Flash wait states in line with new frequency and current
voltage range.
* @param Frequency HCLK frequency
* @retval An ErrorStatus enumeration value:
* - SUCCESS: Latency has been modified
* - ERROR: Latency cannot be modified
*/
static ErrorStatus UTILS_SetFlashLatency(uint32_t Frequency)
{
ErrorStatus status = SUCCESS;
uint32_t latency = LL_FLASH_LATENCY_0; /* default value 0WS */
/* Frequency cannot be equal to 0 */
if (Frequency == 0U)
{
status = ERROR;
}
else
{
if (LL_PWR_GetRegulVoltageScaling() == LL_PWR_REGU_VOLTAGE_SCALE1)
{
if (Frequency > UTILS_SCALE1_LATENCY1_FREQ)
{
/* 16 < HCLK <= 32 => 1WS (2 CPU cycles) */
latency = LL_FLASH_LATENCY_1;
}
/* else HCLK < 16MHz default LL_FLASH_LATENCY_0 0WS */
}
else if (LL_PWR_GetRegulVoltageScaling() == LL_PWR_REGU_VOLTAGE_SCALE2)
{
if (Frequency > UTILS_SCALE2_LATENCY1_FREQ)
{
/* 8 < HCLK <= 16 => 1WS (2 CPU cycles) */
latency = LL_FLASH_LATENCY_1;
}
/* else HCLK < 8MHz default LL_FLASH_LATENCY_0 0WS */
}
else
{
if (Frequency > UTILS_SCALE3_LATENCY1_FREQ)
{
/* 2 < HCLK <= 4 => 1WS (2 CPU cycles) */
latency = LL_FLASH_LATENCY_1;
}
/* else HCLK < 4MHz default LL_FLASH_LATENCY_0 0WS */
}
LL_FLASH_SetLatency(latency);
/* Check that the new number of wait states is taken into account to access the Flash
memory by reading the FLASH_ACR register */
if (LL_FLASH_GetLatency() != latency)
{
status = ERROR;
}
}
return status;
}
/**
* @brief Function to check that PLL can be modified
* @param PLL_InputFrequency PLL input frequency (in Hz)
* @param UTILS_PLLInitStruct pointer to a @ref LL_UTILS_PLLInitTypeDef structure that contains
* the configuration information for the PLL.
* @retval PLL output frequency (in Hz)
*/
static uint32_t UTILS_GetPLLOutputFrequency(uint32_t PLL_InputFrequency, LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct)
{
uint32_t pllfreq = 0U;
/* Check the parameters */
assert_param(IS_LL_UTILS_PLLMUL_VALUE(UTILS_PLLInitStruct->PLLMul));
assert_param(IS_LL_UTILS_PLLDIV_VALUE(UTILS_PLLInitStruct->PLLDiv));
/* Check different PLL parameters according to RM */
/* The application software must set correctly the PLL multiplication factor to avoid exceeding
96 MHz as PLLVCO when the product is in range 1,
48 MHz as PLLVCO when the product is in range 2,
24 MHz when the product is in range 3. */
pllfreq = PLL_InputFrequency * (PLLMulTable[UTILS_PLLInitStruct->PLLMul >> RCC_POSITION_PLLMUL]);
assert_param(IS_LL_UTILS_PLLVCO_OUTPUT(pllfreq));
/* The application software must set correctly the PLL multiplication factor to avoid exceeding
maximum frequency 32000000 in range 1 */
pllfreq = pllfreq / ((UTILS_PLLInitStruct->PLLDiv >> RCC_POSITION_PLLDIV)+1U);
assert_param(IS_LL_UTILS_PLL_FREQUENCY(pllfreq));
return pllfreq;
}
/**
* @brief Function to check that PLL can be modified
* @retval An ErrorStatus enumeration value:
* - SUCCESS: PLL modification can be done
* - ERROR: PLL is busy
*/
static ErrorStatus UTILS_PLL_IsBusy(void)
{
ErrorStatus status = SUCCESS;
/* Check if PLL is busy*/
if (LL_RCC_PLL_IsReady() != 0U)
{
/* PLL configuration cannot be modified */
status = ERROR;
}
return status;
}
/**
* @brief Function to enable PLL and switch system clock to PLL
* @param SYSCLK_Frequency SYSCLK frequency
* @param UTILS_ClkInitStruct pointer to a @ref LL_UTILS_ClkInitTypeDef structure that contains
* the configuration information for the BUS prescalers.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: No problem to switch system to PLL
* - ERROR: Problem to switch system to PLL
*/
static ErrorStatus UTILS_EnablePLLAndSwitchSystem(uint32_t SYSCLK_Frequency, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct)
{
ErrorStatus status = SUCCESS;
uint32_t hclk_frequency = 0U;
assert_param(IS_LL_UTILS_SYSCLK_DIV(UTILS_ClkInitStruct->AHBCLKDivider));
assert_param(IS_LL_UTILS_APB1_DIV(UTILS_ClkInitStruct->APB1CLKDivider));
assert_param(IS_LL_UTILS_APB2_DIV(UTILS_ClkInitStruct->APB2CLKDivider));
/* Calculate HCLK frequency */
hclk_frequency = __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, UTILS_ClkInitStruct->AHBCLKDivider);
/* Increasing the number of wait states because of higher CPU frequency */
if (SystemCoreClock < hclk_frequency)
{
/* Set FLASH latency to highest latency */
status = UTILS_SetFlashLatency(hclk_frequency);
}
/* Update system clock configuration */
if (status == SUCCESS)
{
/* Enable PLL */
LL_RCC_PLL_Enable();
while (LL_RCC_PLL_IsReady() != 1U)
{
/* Wait for PLL ready */
}
/* Sysclk activation on the main PLL */
LL_RCC_SetAHBPrescaler(UTILS_ClkInitStruct->AHBCLKDivider);
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
{
/* Wait for system clock switch to PLL */
}
/* Set APB1 & APB2 prescaler*/
LL_RCC_SetAPB1Prescaler(UTILS_ClkInitStruct->APB1CLKDivider);
LL_RCC_SetAPB2Prescaler(UTILS_ClkInitStruct->APB2CLKDivider);
}
/* Decreasing the number of wait states because of lower CPU frequency */
if (SystemCoreClock > hclk_frequency)
{
/* Set FLASH latency to lowest latency */
status = UTILS_SetFlashLatency(hclk_frequency);
}
/* Update SystemCoreClock variable */
if (status == SUCCESS)
{
LL_SetSystemCoreClock(hclk_frequency);
}
return status;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_utils.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of UTILS LL module.
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
The LL UTILS driver contains a set of generic APIs that can be
used by user:
(+) Device electronic signature
(+) Timing functions
(+) PLL configuration functions
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_UTILS_H
#define __STM32L0xx_LL_UTILS_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
/** @defgroup UTILS_LL UTILS
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup UTILS_LL_Private_Constants UTILS Private Constants
* @{
*/
/* Max delay can be used in LL_mDelay */
#define LL_MAX_DELAY (uint32_t)0xFFFFFFFFU
/**
* @brief Unique device ID register base address
*/
#define UID_BASE_ADDRESS UID_BASE
/**
* @brief Flash size data register base address
*/
#define FLASHSIZE_BASE_ADDRESS FLASHSIZE_BASE
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/** @defgroup UTILS_LL_Private_Macros UTILS Private Macros
* @{
*/
/**
* @}
*/
/* Exported types ------------------------------------------------------------*/
/** @defgroup UTILS_LL_ES_INIT UTILS Exported structures
* @{
*/
/**
* @brief UTILS PLL structure definition
*/
typedef struct
{
uint32_t PLLMul; /*!< Multiplication factor for PLL VCO input clock.
This parameter can be a value of @ref RCC_LL_EC_PLL_MUL
This feature can be modified afterwards using unitary function
@ref LL_RCC_PLL_ConfigDomain_SYS(). */
uint32_t PLLDiv; /*!< Division factor for PLL VCO output clock.
This parameter can be a value of @ref RCC_LL_EC_PLL_DIV
This feature can be modified afterwards using unitary function
@ref LL_RCC_PLL_ConfigDomain_SYS(). */
} LL_UTILS_PLLInitTypeDef;
/**
* @brief UTILS System, AHB and APB buses clock configuration structure definition
*/
typedef struct
{
uint32_t AHBCLKDivider; /*!< The AHB clock (HCLK) divider. This clock is derived from the system clock (SYSCLK).
This parameter can be a value of @ref RCC_LL_EC_SYSCLK_DIV
This feature can be modified afterwards using unitary function
@ref LL_RCC_SetAHBPrescaler(). */
uint32_t APB1CLKDivider; /*!< The APB1 clock (PCLK1) divider. This clock is derived from the AHB clock (HCLK).
This parameter can be a value of @ref RCC_LL_EC_APB1_DIV
This feature can be modified afterwards using unitary function
@ref LL_RCC_SetAPB1Prescaler(). */
uint32_t APB2CLKDivider; /*!< The APB2 clock (PCLK2) divider. This clock is derived from the AHB clock (HCLK).
This parameter can be a value of @ref RCC_LL_EC_APB2_DIV
This feature can be modified afterwards using unitary function
@ref LL_RCC_SetAPB2Prescaler(). */
} LL_UTILS_ClkInitTypeDef;
/**
* @}
*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup UTILS_LL_Exported_Constants UTILS Exported Constants
* @{
*/
/** @defgroup UTILS_EC_HSE_BYPASS HSE Bypass activation
* @{
*/
#define LL_UTILS_HSEBYPASS_OFF (uint32_t)0x00000000U /*!< HSE Bypass is not enabled */
#define LL_UTILS_HSEBYPASS_ON (uint32_t)0x00000001U /*!< HSE Bypass is enabled */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup UTILS_LL_Exported_Functions UTILS Exported Functions
* @{
*/
/** @defgroup UTILS_EF_DEVICE_ELECTRONIC_SIGNATURE DEVICE ELECTRONIC SIGNATURE
* @{
*/
/**
* @brief Get Word0 of the unique device identifier (UID based on 96 bits)
* @retval UID[31:0]
*/
__STATIC_INLINE uint32_t LL_GetUID_Word0(void)
{
return (uint32_t)(READ_REG(*((uint32_t *)UID_BASE_ADDRESS)));
}
/**
* @brief Get Word1 of the unique device identifier (UID based on 96 bits)
* @retval UID[63:32]
*/
__STATIC_INLINE uint32_t LL_GetUID_Word1(void)
{
return (uint32_t)(READ_REG(*((uint32_t *)(UID_BASE_ADDRESS + 4U))));
}
/**
* @brief Get Word2 of the unique device identifier (UID based on 96 bits)
* @retval UID[95:64]
*/
__STATIC_INLINE uint32_t LL_GetUID_Word2(void)
{
return (uint32_t)(READ_REG(*((uint32_t *)(UID_BASE_ADDRESS + 8U))));
}
/**
* @brief Get Flash memory size
* @note This bitfield indicates the size of the device Flash memory expressed in
* Kbytes. As an example, 0x040 corresponds to 64 Kbytes.
* @retval FLASH_SIZE[15:0]: Flash memory size
*/
__STATIC_INLINE uint32_t LL_GetFlashSize(void)
{
return (uint16_t)(READ_REG(*((uint32_t *)FLASHSIZE_BASE_ADDRESS)));
}
/**
* @}
*/
/** @defgroup UTILS_LL_EF_DELAY DELAY
* @{
*/
/**
* @brief This function configures the Cortex-M SysTick source of the time base.
* @param HCLKFrequency HCLK frequency in Hz (can be calculated thanks to RCC helper macro)
* @note When a RTOS is used, it is recommended to avoid changing the SysTick
* configuration by calling this function, for a delay use rather osDelay RTOS service.
* @param Ticks Number of ticks
* @retval None
*/
__STATIC_INLINE void LL_InitTick(uint32_t HCLKFrequency, uint32_t Ticks)
{
/* Configure the SysTick to have interrupt in 1ms time base */
SysTick->LOAD = (uint32_t)((HCLKFrequency / Ticks) - 1UL); /* set reload register */
SysTick->VAL = 0UL; /* Load the SysTick Counter Value */
SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
SysTick_CTRL_ENABLE_Msk; /* Enable the Systick Timer */
}
void LL_Init1msTick(uint32_t HCLKFrequency);
void LL_mDelay(uint32_t Delay);
/**
* @}
*/
/** @defgroup UTILS_EF_SYSTEM SYSTEM
* @{
*/
void LL_SetSystemCoreClock(uint32_t HCLKFrequency);
ErrorStatus LL_PLL_ConfigSystemClock_HSI(LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct,
LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct);
ErrorStatus LL_PLL_ConfigSystemClock_HSE(uint32_t HSEFrequency, uint32_t HSEBypass,
LL_UTILS_PLLInitTypeDef *UTILS_PLLInitStruct, LL_UTILS_ClkInitTypeDef *UTILS_ClkInitStruct);
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_UTILS_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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/**
******************************************************************************
* @file stm32l0xx_ll_wwdg.h
* @author MCD Application Team
* @version V1.7.0
* @date 31-May-2016
* @brief Header file of WWDG LL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_LL_WWDG_H
#define __STM32L0xx_LL_WWDG_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32l0xx.h"
/** @addtogroup STM32L0xx_LL_Driver
* @{
*/
#if defined (WWDG)
/** @defgroup WWDG_LL WWDG
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup WWDG_LL_Exported_Constants WWDG Exported Constants
* @{
*/
/** @defgroup WWDG_LL_EC_IT IT Defines
* @brief IT defines which can be used with LL_WWDG_ReadReg and LL_WWDG_WriteReg functions
* @{
*/
#define LL_WWDG_CFR_EWI WWDG_CFR_EWI
/**
* @}
*/
/** @defgroup WWDG_LL_EC_PRESCALER PRESCALER
* @{
*/
#define LL_WWDG_PRESCALER_1 (uint32_t)0x00000000U /*!< WWDG counter clock = (PCLK1/4096)/1 */
#define LL_WWDG_PRESCALER_2 WWDG_CFR_WDGTB_0 /*!< WWDG counter clock = (PCLK1/4096)/2 */
#define LL_WWDG_PRESCALER_4 WWDG_CFR_WDGTB_1 /*!< WWDG counter clock = (PCLK1/4096)/4 */
#define LL_WWDG_PRESCALER_8 (WWDG_CFR_WDGTB_0 | WWDG_CFR_WDGTB_1) /*!< WWDG counter clock = (PCLK1/4096)/8 */
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/** @defgroup WWDG_LL_Exported_Macros WWDG Exported Macros
* @{
*/
/** @defgroup WWDG_LL_EM_WRITE_READ Common Write and read registers macros
* @{
*/
/**
* @brief Write a value in WWDG register
* @param __INSTANCE__ WWDG Instance
* @param __REG__ Register to be written
* @param __VALUE__ Value to be written in the register
* @retval None
*/
#define LL_WWDG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))
/**
* @brief Read a value in WWDG register
* @param __INSTANCE__ WWDG Instance
* @param __REG__ Register to be read
* @retval Register value
*/
#define LL_WWDG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
* @}
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup WWDG_LL_Exported_Functions WWDG Exported Functions
* @{
*/
/** @defgroup WWDG_LL_EF_Configuration Configuration
* @{
*/
/**
* @brief Enable Window Watchdog. The watchdog is always disabled after a reset.
* @note It is enabled by setting the WDGA bit in the WWDG_CR register,
* then it cannot be disabled again except by a reset.
* This bit is set by software and only cleared by hardware after a reset.
* When WDGA = 1, the watchdog can generate a reset.
* @rmtoll CR WDGA LL_WWDG_Enable
* @param WWDGx WWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_WWDG_Enable(WWDG_TypeDef *WWDGx)
{
SET_BIT(WWDGx->CR, WWDG_CR_WDGA);
}
/**
* @brief Checks if Window Watchdog is enabled
* @rmtoll CR WDGA LL_WWDG_IsEnabled
* @param WWDGx WWDG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_WWDG_IsEnabled(WWDG_TypeDef *WWDGx)
{
return (READ_BIT(WWDGx->CR, WWDG_CR_WDGA) == (WWDG_CR_WDGA));
}
/**
* @brief Set the Watchdog counter value to provided value (7-bits T[6:0])
* @note When writing to the WWDG_CR register, always write 1 in the MSB b6 to avoid generating an immediate reset
* This counter is decremented every (4096 x 2expWDGTB) PCLK cycles
* A reset is produced when it rolls over from 0x40 to 0x3F (bit T6 becomes cleared)
* Setting the counter lower then 0x40 causes an immediate reset (if WWDG enabled)
* @rmtoll CR T LL_WWDG_SetCounter
* @param WWDGx WWDG Instance
* @param Counter 0..0x7F (7 bit counter value)
* @retval None
*/
__STATIC_INLINE void LL_WWDG_SetCounter(WWDG_TypeDef *WWDGx, uint32_t Counter)
{
MODIFY_REG(WWDGx->CR, WWDG_CR_T, Counter);
}
/**
* @brief Return current Watchdog Counter Value (7 bits counter value)
* @rmtoll CR T LL_WWDG_GetCounter
* @param WWDGx WWDG Instance
* @retval 7 bit Watchdog Counter value
*/
__STATIC_INLINE uint32_t LL_WWDG_GetCounter(WWDG_TypeDef *WWDGx)
{
return (uint32_t)(READ_BIT(WWDGx->CR, WWDG_CR_T));
}
/**
* @brief Set the time base of the prescaler (WDGTB).
* @note Prescaler is used to apply ratio on PCLK clock, so that Watchdog counter
* is decremented every (4096 x 2expWDGTB) PCLK cycles
* @rmtoll CFR WDGTB LL_WWDG_SetPrescaler
* @param WWDGx WWDG Instance
* @param Prescaler This parameter can be one of the following values:
* @arg @ref LL_WWDG_PRESCALER_1
* @arg @ref LL_WWDG_PRESCALER_2
* @arg @ref LL_WWDG_PRESCALER_4
* @arg @ref LL_WWDG_PRESCALER_8
* @retval None
*/
__STATIC_INLINE void LL_WWDG_SetPrescaler(WWDG_TypeDef *WWDGx, uint32_t Prescaler)
{
MODIFY_REG(WWDGx->CFR, WWDG_CFR_WDGTB, Prescaler);
}
/**
* @brief Return current Watchdog Prescaler Value
* @rmtoll CFR WDGTB LL_WWDG_GetPrescaler
* @param WWDGx WWDG Instance
* @retval Returned value can be one of the following values:
* @arg @ref LL_WWDG_PRESCALER_1
* @arg @ref LL_WWDG_PRESCALER_2
* @arg @ref LL_WWDG_PRESCALER_4
* @arg @ref LL_WWDG_PRESCALER_8
*/
__STATIC_INLINE uint32_t LL_WWDG_GetPrescaler(WWDG_TypeDef *WWDGx)
{
return (uint32_t)(READ_BIT(WWDGx->CFR, WWDG_CFR_WDGTB));
}
/**
* @brief Set the Watchdog Window value to be compared to the downcounter (7-bits W[6:0]).
* @note This window value defines when write in the WWDG_CR register
* to program Watchdog counter is allowed.
* Watchdog counter value update must occur only when the counter value
* is lower than the Watchdog window register value.
* Otherwise, a MCU reset is generated if the 7-bit Watchdog counter value
* (in the control register) is refreshed before the downcounter has reached
* the watchdog window register value.
* Physically is possible to set the Window lower then 0x40 but it is not recommended.
* To generate an immediate reset, it is possible to set the Counter lower than 0x40.
* @rmtoll CFR W LL_WWDG_SetWindow
* @param WWDGx WWDG Instance
* @param Window 0x00..0x7F (7 bit Window value)
* @retval None
*/
__STATIC_INLINE void LL_WWDG_SetWindow(WWDG_TypeDef *WWDGx, uint32_t Window)
{
MODIFY_REG(WWDGx->CFR, WWDG_CFR_W, Window);
}
/**
* @brief Return current Watchdog Window Value (7 bits value)
* @rmtoll CFR W LL_WWDG_GetWindow
* @param WWDGx WWDG Instance
* @retval 7 bit Watchdog Window value
*/
__STATIC_INLINE uint32_t LL_WWDG_GetWindow(WWDG_TypeDef *WWDGx)
{
return (uint32_t)(READ_BIT(WWDGx->CFR, WWDG_CFR_W));
}
/**
* @}
*/
/** @defgroup WWDG_LL_EF_FLAG_Management FLAG_Management
* @{
*/
/**
* @brief Indicates if the WWDG Early Wakeup Interrupt Flag is set or not.
* @note This bit is set by hardware when the counter has reached the value 0x40.
* It must be cleared by software by writing 0.
* A write of 1 has no effect. This bit is also set if the interrupt is not enabled.
* @rmtoll SR EWIF LL_WWDG_IsActiveFlag_EWKUP
* @param WWDGx WWDG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_WWDG_IsActiveFlag_EWKUP(WWDG_TypeDef *WWDGx)
{
return (READ_BIT(WWDGx->SR, WWDG_SR_EWIF) == (WWDG_SR_EWIF));
}
/**
* @brief Clear WWDG Early Wakeup Interrupt Flag (EWIF)
* @rmtoll SR EWIF LL_WWDG_ClearFlag_EWKUP
* @param WWDGx WWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_WWDG_ClearFlag_EWKUP(WWDG_TypeDef *WWDGx)
{
WRITE_REG(WWDGx->SR, ~WWDG_SR_EWIF);
}
/**
* @}
*/
/** @defgroup WWDG_LL_EF_IT_Management IT_Management
* @{
*/
/**
* @brief Enable the Early Wakeup Interrupt.
* @note When set, an interrupt occurs whenever the counter reaches value 0x40.
* This interrupt is only cleared by hardware after a reset
* @rmtoll CFR EWI LL_WWDG_EnableIT_EWKUP
* @param WWDGx WWDG Instance
* @retval None
*/
__STATIC_INLINE void LL_WWDG_EnableIT_EWKUP(WWDG_TypeDef *WWDGx)
{
SET_BIT(WWDGx->CFR, WWDG_CFR_EWI);
}
/**
* @brief Check if Early Wakeup Interrupt is enabled
* @rmtoll CFR EWI LL_WWDG_IsEnabledIT_EWKUP
* @param WWDGx WWDG Instance
* @retval State of bit (1 or 0).
*/
__STATIC_INLINE uint32_t LL_WWDG_IsEnabledIT_EWKUP(WWDG_TypeDef *WWDGx)
{
return (READ_BIT(WWDGx->CFR, WWDG_CFR_EWI) == (WWDG_CFR_EWI));
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* WWDG */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_LL_WWDG_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/