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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f1xx_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 | * Copyright (c) 2016 STMicroelectronics. |
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| 10 | * All rights reserved. |
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| 11 | * |
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| 12 | * This software is licensed under terms that can be found in the LICENSE file |
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| 13 | * in the root directory of this software component. |
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| 14 | * If no LICENSE file comes with this software, it is provided AS-IS. |
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| 15 | * |
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| 16 | ****************************************************************************** |
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| 17 | */ |
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| 18 | #if defined(USE_FULL_LL_DRIVER) |
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| 19 | |||
| 20 | /* Includes ------------------------------------------------------------------*/ |
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| 21 | #include "stm32f1xx_ll_crc.h" |
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| 22 | #include "stm32f1xx_ll_bus.h" |
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| 23 | |||
| 24 | #ifdef USE_FULL_ASSERT |
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| 25 | #include "stm32_assert.h" |
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| 26 | #else |
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| 27 | #define assert_param(expr) ((void)0U) |
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| 28 | #endif /* USE_FULL_ASSERT */ |
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| 29 | |||
| 30 | /** @addtogroup STM32F1xx_LL_Driver |
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| 31 | * @{ |
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| 32 | */ |
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| 33 | |||
| 34 | #if defined (CRC) |
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| 35 | |||
| 36 | /** @addtogroup CRC_LL |
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| 37 | * @{ |
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| 38 | */ |
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| 39 | |||
| 40 | /* Private types -------------------------------------------------------------*/ |
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| 41 | /* Private variables ---------------------------------------------------------*/ |
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| 42 | /* Private constants ---------------------------------------------------------*/ |
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| 43 | /* Private macros ------------------------------------------------------------*/ |
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| 44 | /* Private function prototypes -----------------------------------------------*/ |
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| 45 | |||
| 46 | /* Exported functions --------------------------------------------------------*/ |
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| 47 | /** @addtogroup CRC_LL_Exported_Functions |
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| 48 | * @{ |
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| 49 | */ |
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| 50 | |||
| 51 | /** @addtogroup CRC_LL_EF_Init |
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| 52 | * @{ |
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| 53 | */ |
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| 54 | |||
| 55 | /** |
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| 56 | * @brief De-initialize CRC registers (Registers restored to their default values). |
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| 57 | * @param CRCx CRC Instance |
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| 58 | * @retval An ErrorStatus enumeration value: |
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| 59 | * - SUCCESS: CRC registers are de-initialized |
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| 60 | * - ERROR: CRC registers are not de-initialized |
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| 61 | */ |
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| 62 | ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx) |
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| 63 | { |
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| 64 | ErrorStatus status = SUCCESS; |
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| 65 | |||
| 66 | /* Check the parameters */ |
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| 67 | assert_param(IS_CRC_ALL_INSTANCE(CRCx)); |
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| 68 | |||
| 69 | if (CRCx == CRC) |
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| 70 | { |
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| 71 | |||
| 72 | /* Reset the CRC calculation unit */ |
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| 73 | LL_CRC_ResetCRCCalculationUnit(CRCx); |
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| 74 | |||
| 75 | /* Reset IDR register */ |
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| 76 | LL_CRC_Write_IDR(CRCx, 0x00U); |
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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 | |||
| 83 | return (status); |
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| 84 | } |
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| 85 | |||
| 86 | /** |
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| 87 | * @} |
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| 88 | */ |
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| 89 | |||
| 90 | /** |
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| 91 | * @} |
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| 92 | */ |
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| 93 | |||
| 94 | /** |
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| 95 | * @} |
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| 96 | */ |
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| 97 | |||
| 98 | #endif /* defined (CRC) */ |
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| 99 | |||
| 100 | /** |
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| 101 | * @} |
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| 102 | */ |
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| 103 | |||
| 104 | #endif /* USE_FULL_LL_DRIVER */ |