| 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file stm32f4xx_ll_crc.c
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| 4 | * @author MCD Application Team
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| 5 | * @brief CRC LL module driver.
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| 6 | ******************************************************************************
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| 7 | * @attention
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| 8 | *
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| 9 | * <h2><center>© Copyright (c) 2016 STMicroelectronics.
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| 10 | * All rights reserved.</center></h2>
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| 11 | *
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| 12 | * This software component is licensed by ST under BSD 3-Clause license,
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| 13 | * the "License"; You may not use this file except in compliance with the
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| 14 | * License. You may obtain a copy of the License at:
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| 15 | * opensource.org/licenses/BSD-3-Clause
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| 16 | *
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| 17 | ******************************************************************************
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| 18 | */
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| 19 | #if defined(USE_FULL_LL_DRIVER)
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| 20 |
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| 21 | /* Includes ------------------------------------------------------------------*/
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| 22 | #include "stm32f4xx_ll_crc.h"
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| 23 | #include "stm32f4xx_ll_bus.h"
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| 24 |
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| 25 | #ifdef USE_FULL_ASSERT
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| 26 | #include "stm32_assert.h"
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| 27 | #else
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| 28 | #define assert_param(expr) ((void)0U)
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| 29 | #endif
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| 30 |
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| 31 | /** @addtogroup STM32F4xx_LL_Driver
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| 32 | * @{
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| 33 | */
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| 34 |
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| 35 | #if defined (CRC)
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| 36 |
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| 37 | /** @addtogroup CRC_LL
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| 38 | * @{
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| 39 | */
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| 40 |
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| 41 | /* Private types -------------------------------------------------------------*/
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| 42 | /* Private variables ---------------------------------------------------------*/
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| 43 | /* Private constants ---------------------------------------------------------*/
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| 44 | /* Private macros ------------------------------------------------------------*/
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| 45 | /* Private function prototypes -----------------------------------------------*/
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| 46 |
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| 47 | /* Exported functions --------------------------------------------------------*/
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| 48 | /** @addtogroup CRC_LL_Exported_Functions
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| 49 | * @{
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| 50 | */
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| 51 |
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| 52 | /** @addtogroup CRC_LL_EF_Init
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| 53 | * @{
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| 54 | */
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| 55 |
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| 56 | /**
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| 57 | * @brief De-initialize CRC registers (Registers restored to their default values).
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| 58 | * @param CRCx CRC Instance
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| 59 | * @retval An ErrorStatus enumeration value:
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| 60 | * - SUCCESS: CRC registers are de-initialized
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| 61 | * - ERROR: CRC registers are not de-initialized
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| 62 | */
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| 63 | ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx)
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| 64 | {
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| 65 | ErrorStatus status = SUCCESS;
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| 66 |
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| 67 | /* Check the parameters */
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| 68 | assert_param(IS_CRC_ALL_INSTANCE(CRCx));
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| 69 |
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| 70 | if (CRCx == CRC)
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| 71 | {
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| 72 | /* Force CRC reset */
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| 73 | LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_CRC);
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| 74 |
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| 75 | /* Release CRC reset */
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| 76 | LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_CRC);
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| 77 | }
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| 78 | else
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| 79 | {
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| 80 | status = ERROR;
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| 81 | }
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| 82 |
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| 83 | return (status);
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| 84 | }
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| 85 |
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| 86 | /**
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| 87 | * @}
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| 88 | */
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| 89 |
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| 90 | /**
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| 91 | * @}
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| 92 | */
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| 93 |
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| 94 | /**
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| 95 | * @}
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| 96 | */
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| 97 |
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| 98 | #endif /* defined (CRC) */
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| 99 |
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| 100 | /**
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| 101 | * @}
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| 102 | */
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| 103 |
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| 104 | #endif /* USE_FULL_LL_DRIVER */
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| 105 |
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| 106 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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| 107 |
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