mirror of https://github.com/ARMmbed/mbed-os.git
191 lines
6.9 KiB
C
191 lines
6.9 KiB
C
/**
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******************************************************************************
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* @file stm32l4xx_ll_swpmi.c
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* @author MCD Application Team
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* @version V1.5.1
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* @date 31-May-2016
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* @brief SWPMI LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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#if defined(USE_FULL_LL_DRIVER)
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/* Includes ------------------------------------------------------------------*/
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#include "stm32l4xx_ll_swpmi.h"
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#include "stm32l4xx_ll_bus.h"
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#ifdef USE_FULL_ASSERT
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#include "stm32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif
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/** @addtogroup STM32L4xx_LL_Driver
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* @{
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*/
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#if defined (SWPMI1)
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/** @addtogroup SWPMI_LL
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* @{
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macros ------------------------------------------------------------*/
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/** @addtogroup SWPMI_LL_Private_Macros
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* @{
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*/
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#define IS_LL_SWPMI_BITRATE_VALUE(__VALUE__) (((__VALUE__) <= 63))
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#define IS_LL_SWPMI_SW_BUFFER_RX(__VALUE__) (((__VALUE__) == LL_SWPMI_SW_BUFFER_RX_SINGLE) \
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|| ((__VALUE__) == LL_SWPMI_SW_BUFFER_RX_MULTI))
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#define IS_LL_SWPMI_SW_BUFFER_TX(__VALUE__) (((__VALUE__) == LL_SWPMI_SW_BUFFER_TX_SINGLE) \
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|| ((__VALUE__) == LL_SWPMI_SW_BUFFER_TX_MULTI))
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#define IS_LL_SWPMI_VOLTAGE_CLASS(__VALUE__) (((__VALUE__) == LL_SWPMI_VOLTAGE_CLASS_C) \
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|| ((__VALUE__) == LL_SWPMI_VOLTAGE_CLASS_B))
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup SWPMI_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup SWPMI_LL_EF_Init
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* @{
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*/
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/**
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* @brief De-initialize the SWPMI peripheral registers to their default reset values.
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* @param SWPMIx SWPMI Instance
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* @retval An ErrorStatus enumeration value
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* - SUCCESS: SWPMI registers are de-initialized
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* - ERROR: Not applicable
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*/
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ErrorStatus LL_SWPMI_DeInit(SWPMI_TypeDef *SWPMIx)
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{
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/* Check the parameter */
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assert_param(IS_SWPMI_INSTANCE(SWPMIx));
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LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_SWPMI1);
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LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_SWPMI1);
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return SUCCESS;
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}
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/**
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* @brief Initialize the SWPMI peripheral according to the specified parameters in the SWPMI_InitStruct.
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* @note As some bits in SWPMI configuration registers can only be written when the SWPMI is deactivated (SWPMI_CR_SWPACT bit = 0),
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* SWPMI IP should be in deactivated state prior calling this function. Otherwise, ERROR result will be returned.
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* @param SWPMIx SWPMI Instance
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* @param SWPMI_InitStruct pointer to a @ref LL_SWPMI_InitTypeDef structure that contains
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* the configuration information for the SWPMI peripheral.
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* @retval An ErrorStatus enumeration value
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* - SUCCESS: SWPMI registers are initialized
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* - ERROR: SWPMI registers are not initialized
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*/
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ErrorStatus LL_SWPMI_Init(SWPMI_TypeDef *SWPMIx, LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
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{
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ErrorStatus status = SUCCESS;
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/* Check the parameters */
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assert_param(IS_SWPMI_INSTANCE(SWPMIx));
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assert_param(IS_LL_SWPMI_BITRATE_VALUE(SWPMI_InitStruct->BitRatePrescaler));
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assert_param(IS_LL_SWPMI_SW_BUFFER_TX(SWPMI_InitStruct->TxBufferingMode));
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assert_param(IS_LL_SWPMI_SW_BUFFER_RX(SWPMI_InitStruct->RxBufferingMode));
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assert_param(IS_LL_SWPMI_VOLTAGE_CLASS(SWPMI_InitStruct->VoltageClass));
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/* SWPMI needs to be in deactivated state, in order to be able to configure some bits */
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if (LL_SWPMI_IsActivated(SWPMIx) == 0)
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{
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/* Configure the BRR register (Bitrate) */
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LL_SWPMI_SetBitRatePrescaler(SWPMIx, SWPMI_InitStruct->BitRatePrescaler);
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/* Configure the voltage class */
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LL_SWPMI_SetVoltageClass(SWPMIx, SWPMI_InitStruct->VoltageClass);
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/* Set the new configuration of the SWPMI peripheral */
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MODIFY_REG(SWPMIx->CR,
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(SWPMI_CR_RXMODE | SWPMI_CR_TXMODE),
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(SWPMI_InitStruct->TxBufferingMode | SWPMI_InitStruct->RxBufferingMode));
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}
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/* Else (SWPMI not in deactivated state => return ERROR) */
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else
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{
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status = ERROR;
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}
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return status;
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}
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/**
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* @brief Set each @ref LL_SWPMI_InitTypeDef field to default value.
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* @param SWPMI_InitStruct pointer to a @ref LL_SWPMI_InitTypeDef structure that contains
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* the configuration information for the SWPMI peripheral.
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* @retval None
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*/
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void LL_SWPMI_StructInit(LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
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{
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/* Set SWPMI_InitStruct fields to default values */
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SWPMI_InitStruct->VoltageClass = LL_SWPMI_VOLTAGE_CLASS_C;
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SWPMI_InitStruct->BitRatePrescaler = (uint32_t)0x00000001;
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SWPMI_InitStruct->TxBufferingMode = LL_SWPMI_SW_BUFFER_TX_SINGLE;
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SWPMI_InitStruct->RxBufferingMode = LL_SWPMI_SW_BUFFER_RX_SINGLE;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* defined (SWPMI1) */
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/**
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* @}
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*/
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#endif /* USE_FULL_LL_DRIVER */
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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