amiro-blt / Target / Modules / DiWheelDrive_1-1 / Boot / lib / STM32F10x_StdPeriph_Driver / src / stm32f10x_crc.c @ 367c0652
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| 1 | 69661903 | Thomas Schöpping | /**
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| 2 | ******************************************************************************
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| 3 | * @file stm32f10x_crc.c
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| 4 | * @author MCD Application Team
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| 5 | * @version V3.5.0
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| 6 | * @date 11-March-2011
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| 7 | * @brief This file provides all the CRC firmware functions.
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| 8 | ******************************************************************************
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| 9 | * @attention
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| 10 | *
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| 11 | * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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| 12 | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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| 13 | * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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| 14 | * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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| 15 | * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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| 16 | * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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| 17 | *
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| 18 | * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
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| 19 | ******************************************************************************
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| 20 | */
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| 21 | |||
| 22 | /* Includes ------------------------------------------------------------------*/
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| 23 | #include "stm32f10x_crc.h" |
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| 24 | |||
| 25 | /** @addtogroup STM32F10x_StdPeriph_Driver
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| 26 | * @{
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| 27 | */
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| 28 | |||
| 29 | /** @defgroup CRC
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| 30 | * @brief CRC driver modules
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| 31 | * @{
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| 32 | */
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| 33 | |||
| 34 | /** @defgroup CRC_Private_TypesDefinitions
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| 35 | * @{
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| 36 | */
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| 37 | |||
| 38 | /**
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| 39 | * @}
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| 40 | */
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| 41 | |||
| 42 | /** @defgroup CRC_Private_Defines
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| 43 | * @{
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| 44 | */
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| 45 | |||
| 46 | /**
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| 47 | * @}
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| 48 | */
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| 49 | |||
| 50 | /** @defgroup CRC_Private_Macros
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| 51 | * @{
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| 52 | */
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| 53 | |||
| 54 | /**
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| 55 | * @}
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| 56 | */
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| 57 | |||
| 58 | /** @defgroup CRC_Private_Variables
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| 59 | * @{
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| 60 | */
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| 61 | |||
| 62 | /**
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| 63 | * @}
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| 64 | */
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| 65 | |||
| 66 | /** @defgroup CRC_Private_FunctionPrototypes
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| 67 | * @{
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| 68 | */
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| 69 | |||
| 70 | /**
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| 71 | * @}
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| 72 | */
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| 73 | |||
| 74 | /** @defgroup CRC_Private_Functions
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| 75 | * @{
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| 76 | */
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| 77 | |||
| 78 | /**
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| 79 | * @brief Resets the CRC Data register (DR).
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| 80 | * @param None
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| 81 | * @retval None
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| 82 | */
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| 83 | void CRC_ResetDR(void) |
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| 84 | {
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| 85 | /* Reset CRC generator */
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| 86 | CRC->CR = CRC_CR_RESET; |
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| 87 | } |
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| 88 | |||
| 89 | /**
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| 90 | * @brief Computes the 32-bit CRC of a given data word(32-bit).
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| 91 | * @param Data: data word(32-bit) to compute its CRC
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| 92 | * @retval 32-bit CRC
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| 93 | */
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| 94 | uint32_t CRC_CalcCRC(uint32_t Data) |
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| 95 | {
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| 96 | CRC->DR = Data; |
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| 97 | |||
| 98 | return (CRC->DR);
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| 99 | } |
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| 100 | |||
| 101 | /**
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| 102 | * @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
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| 103 | * @param pBuffer: pointer to the buffer containing the data to be computed
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| 104 | * @param BufferLength: length of the buffer to be computed
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| 105 | * @retval 32-bit CRC
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| 106 | */
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| 107 | uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength) |
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| 108 | {
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| 109 | uint32_t index = 0;
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| 110 | |||
| 111 | for(index = 0; index < BufferLength; index++) |
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| 112 | {
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| 113 | CRC->DR = pBuffer[index]; |
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| 114 | } |
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| 115 | return (CRC->DR);
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| 116 | } |
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| 117 | |||
| 118 | /**
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| 119 | * @brief Returns the current CRC value.
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| 120 | * @param None
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| 121 | * @retval 32-bit CRC
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| 122 | */
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| 123 | uint32_t CRC_GetCRC(void)
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| 124 | {
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| 125 | return (CRC->DR);
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| 126 | } |
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| 127 | |||
| 128 | /**
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| 129 | * @brief Stores a 8-bit data in the Independent Data(ID) register.
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| 130 | * @param IDValue: 8-bit value to be stored in the ID register
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| 131 | * @retval None
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| 132 | */
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| 133 | void CRC_SetIDRegister(uint8_t IDValue)
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| 134 | {
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| 135 | CRC->IDR = IDValue; |
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| 136 | } |
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| 137 | |||
| 138 | /**
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| 139 | * @brief Returns the 8-bit data stored in the Independent Data(ID) register
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| 140 | * @param None
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| 141 | * @retval 8-bit value of the ID register
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| 142 | */
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| 143 | uint8_t CRC_GetIDRegister(void)
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| 144 | {
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| 145 | return (CRC->IDR);
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| 146 | } |
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| 147 | |||
| 148 | /**
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| 149 | * @}
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| 150 | */
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| 151 | |||
| 152 | /**
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| 153 | * @}
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| 154 | */
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| 155 | |||
| 156 | /**
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| 157 | * @}
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| 158 | */
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| 159 | |||
| 160 | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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