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| Rev | Author | Line No. | Line |
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| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f1xx_ll_crc.h |
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| 4 | * @author MCD Application Team |
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| 5 | * @brief Header file of CRC LL module. |
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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 | |||
| 20 | /* Define to prevent recursive inclusion -------------------------------------*/ |
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| 21 | #ifndef STM32F1xx_LL_CRC_H |
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| 22 | #define STM32F1xx_LL_CRC_H |
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| 23 | |||
| 24 | #ifdef __cplusplus |
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| 25 | extern "C" { |
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| 26 | #endif |
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| 27 | |||
| 28 | /* Includes ------------------------------------------------------------------*/ |
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| 29 | #include "stm32f1xx.h" |
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| 30 | |||
| 31 | /** @addtogroup STM32F1xx_LL_Driver |
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| 32 | * @{ |
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| 33 | */ |
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| 34 | |||
| 35 | #if defined(CRC) |
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| 36 | |||
| 37 | /** @defgroup CRC_LL CRC |
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| 38 | * @{ |
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| 39 | */ |
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| 40 | |||
| 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 | |||
| 46 | /* Exported types ------------------------------------------------------------*/ |
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| 47 | /* Exported constants --------------------------------------------------------*/ |
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| 48 | /** @defgroup CRC_LL_Exported_Constants CRC Exported Constants |
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| 49 | * @{ |
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| 50 | */ |
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| 51 | |||
| 52 | /** |
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| 53 | * @} |
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| 54 | */ |
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| 55 | |||
| 56 | /* Exported macro ------------------------------------------------------------*/ |
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| 57 | /** @defgroup CRC_LL_Exported_Macros CRC Exported Macros |
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| 58 | * @{ |
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| 59 | */ |
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| 60 | |||
| 61 | /** @defgroup CRC_LL_EM_WRITE_READ Common Write and read registers Macros |
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| 62 | * @{ |
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| 63 | */ |
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| 64 | |||
| 65 | /** |
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| 66 | * @brief Write a value in CRC register |
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| 67 | * @param __INSTANCE__ CRC Instance |
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| 68 | * @param __REG__ Register to be written |
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| 69 | * @param __VALUE__ Value to be written in the register |
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| 70 | * @retval None |
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| 71 | */ |
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| 72 | #define LL_CRC_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, __VALUE__) |
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| 73 | |||
| 74 | /** |
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| 75 | * @brief Read a value in CRC register |
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| 76 | * @param __INSTANCE__ CRC Instance |
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| 77 | * @param __REG__ Register to be read |
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| 78 | * @retval Register value |
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| 79 | */ |
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| 80 | #define LL_CRC_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) |
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| 81 | /** |
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| 82 | * @} |
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| 83 | */ |
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| 84 | |||
| 85 | /** |
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| 86 | * @} |
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| 87 | */ |
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| 88 | |||
| 89 | |||
| 90 | /* Exported functions --------------------------------------------------------*/ |
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| 91 | /** @defgroup CRC_LL_Exported_Functions CRC Exported Functions |
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| 92 | * @{ |
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| 93 | */ |
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| 94 | |||
| 95 | /** @defgroup CRC_LL_EF_Configuration CRC Configuration functions |
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| 96 | * @{ |
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| 97 | */ |
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| 98 | |||
| 99 | /** |
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| 100 | * @brief Reset the CRC calculation unit. |
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| 101 | * @note If Programmable Initial CRC value feature |
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| 102 | * is available, also set the Data Register to the value stored in the |
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| 103 | * CRC_INIT register, otherwise, reset Data Register to its default value. |
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| 104 | * @rmtoll CR RESET LL_CRC_ResetCRCCalculationUnit |
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| 105 | * @param CRCx CRC Instance |
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| 106 | * @retval None |
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| 107 | */ |
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| 108 | __STATIC_INLINE void LL_CRC_ResetCRCCalculationUnit(CRC_TypeDef *CRCx) |
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| 109 | { |
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| 110 | SET_BIT(CRCx->CR, CRC_CR_RESET); |
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| 111 | } |
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| 112 | |||
| 113 | /** |
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| 114 | * @} |
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| 115 | */ |
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| 116 | |||
| 117 | /** @defgroup CRC_LL_EF_Data_Management Data_Management |
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| 118 | * @{ |
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| 119 | */ |
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| 120 | |||
| 121 | /** |
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| 122 | * @brief Write given 32-bit data to the CRC calculator |
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| 123 | * @rmtoll DR DR LL_CRC_FeedData32 |
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| 124 | * @param CRCx CRC Instance |
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| 125 | * @param InData value to be provided to CRC calculator between between Min_Data=0 and Max_Data=0xFFFFFFFF |
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| 126 | * @retval None |
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| 127 | */ |
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| 128 | __STATIC_INLINE void LL_CRC_FeedData32(CRC_TypeDef *CRCx, uint32_t InData) |
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| 129 | { |
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| 130 | WRITE_REG(CRCx->DR, InData); |
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| 131 | } |
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| 132 | |||
| 133 | /** |
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| 134 | * @brief Return current CRC calculation result. 32 bits value is returned. |
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| 135 | * @rmtoll DR DR LL_CRC_ReadData32 |
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| 136 | * @param CRCx CRC Instance |
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| 137 | * @retval Current CRC calculation result as stored in CRC_DR register (32 bits). |
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| 138 | */ |
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| 139 | __STATIC_INLINE uint32_t LL_CRC_ReadData32(CRC_TypeDef *CRCx) |
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| 140 | { |
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| 141 | return (uint32_t)(READ_REG(CRCx->DR)); |
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| 142 | } |
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| 143 | |||
| 144 | /** |
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| 145 | * @brief Return data stored in the Independent Data(IDR) register. |
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| 146 | * @note This register can be used as a temporary storage location for one byte. |
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| 147 | * @rmtoll IDR IDR LL_CRC_Read_IDR |
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| 148 | * @param CRCx CRC Instance |
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| 149 | * @retval Value stored in CRC_IDR register (General-purpose 8-bit data register). |
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| 150 | */ |
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| 151 | __STATIC_INLINE uint32_t LL_CRC_Read_IDR(CRC_TypeDef *CRCx) |
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| 152 | { |
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| 153 | return (uint32_t)(READ_REG(CRCx->IDR)); |
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| 154 | } |
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| 155 | |||
| 156 | /** |
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| 157 | * @brief Store data in the Independent Data(IDR) register. |
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| 158 | * @note This register can be used as a temporary storage location for one byte. |
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| 159 | * @rmtoll IDR IDR LL_CRC_Write_IDR |
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| 160 | * @param CRCx CRC Instance |
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| 161 | * @param InData value to be stored in CRC_IDR register (8-bit) between Min_Data=0 and Max_Data=0xFF |
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| 162 | * @retval None |
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| 163 | */ |
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| 164 | __STATIC_INLINE void LL_CRC_Write_IDR(CRC_TypeDef *CRCx, uint32_t InData) |
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| 165 | { |
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| 166 | *((uint8_t __IO *)(&CRCx->IDR)) = (uint8_t) InData; |
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| 167 | } |
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| 168 | /** |
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| 169 | * @} |
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| 170 | */ |
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| 171 | |||
| 172 | #if defined(USE_FULL_LL_DRIVER) |
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| 173 | /** @defgroup CRC_LL_EF_Init Initialization and de-initialization functions |
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| 174 | * @{ |
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| 175 | */ |
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| 176 | |||
| 177 | ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx); |
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| 178 | |||
| 179 | /** |
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| 180 | * @} |
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| 181 | */ |
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| 182 | #endif /* USE_FULL_LL_DRIVER */ |
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| 183 | |||
| 184 | /** |
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| 185 | * @} |
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| 186 | */ |
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| 187 | |||
| 188 | /** |
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| 189 | * @} |
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| 190 | */ |
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| 191 | |||
| 192 | #endif /* defined(CRC) */ |
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| 193 | |||
| 194 | /** |
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| 195 | * @} |
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| 196 | */ |
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| 197 | |||
| 198 | #ifdef __cplusplus |
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| 199 | } |
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| 200 | #endif |
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| 201 | |||
| 202 | #endif /* STM32F1xx_LL_CRC_H */ |
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| 203 | |||
| 204 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |