lib/main/STM32H7/Drivers/STM32H7xx_HAL_Driver/Src/stm32h7xx_ll_crc.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32h7xx_ll_crc.c
   4   * @author  MCD Application Team
   5   * @brief   CRC LL module driver.
   6   ******************************************************************************
   7   * @attention
   8   *
   9   * Copyright (c) 2017 STMicroelectronics.
  10   * All rights reserved.
  11   *
  12   * This software is licensed under terms that can be found in the LICENSE file
  13   * in the root directory of this software component.
  14   * If no LICENSE file comes with this software, it is provided AS-IS.
  15   *
  16   ******************************************************************************
  17   */
  18 #if defined(USE_FULL_LL_DRIVER)
  19
  20 /* Includes ------------------------------------------------------------------*/
  21 #include "stm32h7xx_ll_crc.h"
  22 #include "stm32h7xx_ll_bus.h"
  23
  24 #ifdef  USE_FULL_ASSERT
  25 #include "stm32_assert.h"
  26 #else
  27 #define assert_param(expr) ((void)0U)
  28 #endif /* USE_FULL_ASSERT */
  29
  30 /** @addtogroup STM32H7xx_LL_Driver
  31   * @{
  32   */
  33
  34 #if defined (CRC)
  35
  36 /** @addtogroup CRC_LL
  37   * @{
  38   */
  39
  40 /* Private types -------------------------------------------------------------*/
  41 /* Private variables ---------------------------------------------------------*/
  42 /* Private constants ---------------------------------------------------------*/
  43 /* Private macros ------------------------------------------------------------*/
  44 /* Private function prototypes -----------------------------------------------*/
  45
  46 /* Exported functions --------------------------------------------------------*/
  47 /** @addtogroup CRC_LL_Exported_Functions
  48   * @{
  49   */
  50
  51 /** @addtogroup CRC_LL_EF_Init
  52   * @{
  53   */
  54
  55 /**
  56   * @brief  De-initialize CRC registers (Registers restored to their default values).
  57   * @param  CRCx CRC Instance
  58   * @retval An ErrorStatus enumeration value:
  59   *          - SUCCESS: CRC registers are de-initialized
  60   *          - ERROR: CRC registers are not de-initialized
  61   */
  62 ErrorStatus LL_CRC_DeInit(const CRC_TypeDef *CRCx)
  63 {
  64   ErrorStatus status = SUCCESS;
  65
  66   /* Check the parameters */
  67   assert_param(IS_CRC_ALL_INSTANCE(CRCx));
  68
  69   if (CRCx == CRC)
  70   {
  71 #if defined(LL_AHB4_GRP1_PERIPH_CRC)
  72     /* Force CRC reset */
  73     LL_AHB4_GRP1_ForceReset(LL_AHB4_GRP1_PERIPH_CRC);
  74
  75     /* Release CRC reset */
  76     LL_AHB4_GRP1_ReleaseReset(LL_AHB4_GRP1_PERIPH_CRC);
  77 #else
  78     /* Force CRC reset */
  79     LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_CRC);
  80
  81     /* Release CRC reset */
  82     LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_CRC);
  83 #endif /*LL_AHB4_GRP1_PERIPH_CRC)*/
  84   }
  85   else
  86   {
  87     status = ERROR;
  88   }
  89
  90   return (status);
  91 }
  92
  93 /**
  94   * @}
  95   */
  96
  97 /**
  98   * @}
  99   */
 100
 101 /**
 102   * @}
 103   */
 104
 105 #endif /* defined (CRC) */
 106
 107 /**
 108   * @}
 109   */
 110
 111 #endif /* USE_FULL_LL_DRIVER */