mirror of https://github.com/ARMmbed/mbed-os.git
139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
/**
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******************************************************************************
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* @file stm32h7xx_ll_rng.c
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* @author MCD Application Team
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* @brief RNG LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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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 "stm32h7xx_ll_rng.h"
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#include "stm32h7xx_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 STM32H7xx_LL_Driver
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* @{
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*/
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#if defined (RNG)
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/** @addtogroup RNG_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 RNG_LL_Private_Macros
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* @{
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*/
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#define IS_LL_RNG_CED(__MODE__) (((__MODE__) == LL_RNG_CED_ENABLE) || \
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((__MODE__) == LL_RNG_CED_DISABLE))
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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 RNG_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup RNG_LL_EF_Init
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* @{
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*/
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/**
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* @brief De-initialize RNG registers (Registers restored to their default values).
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* @param RNGx RNG Instance
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: RNG registers are de-initialized
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* - ERROR: not applicable
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*/
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ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx)
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{
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/* Check the parameters */
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assert_param(IS_RNG_ALL_INSTANCE(RNGx));
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/* Enable RNG reset state */
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LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_RNG);
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/* Release RNG from reset state */
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LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_RNG);
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return (SUCCESS);
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}
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/**
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* @brief Initialize RNG registers according to the specified parameters in RNG_InitStruct.
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* @param RNGx RNG Instance
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* @param RNG_InitStruct pointer to a LL_RNG_InitTypeDef structure
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* that contains the configuration information for the specified RNG peripheral.
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: RNG registers are initialized according to RNG_InitStruct content
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* - ERROR: not applicable
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*/
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ErrorStatus LL_RNG_Init(RNG_TypeDef *RNGx, LL_RNG_InitTypeDef *RNG_InitStruct)
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{
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/* Check the parameters */
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assert_param(IS_RNG_ALL_INSTANCE(RNGx));
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assert_param(IS_LL_RNG_CED(RNG_InitStruct->ClockErrorDetection));
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/* Clock Error Detection configuration */
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MODIFY_REG(RNGx->CR, RNG_CR_CED, RNG_InitStruct->ClockErrorDetection);
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return (SUCCESS);
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}
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/**
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* @brief Set each @ref LL_RNG_InitTypeDef field to default value.
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* @param RNG_InitStruct pointer to a @ref LL_RNG_InitTypeDef structure
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* whose fields will be set to default values.
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* @retval None
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*/
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void LL_RNG_StructInit(LL_RNG_InitTypeDef *RNG_InitStruct)
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{
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/* Set RNG_InitStruct fields to default values */
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RNG_InitStruct->ClockErrorDetection = LL_RNG_CED_ENABLE;
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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 /* RNG */
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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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