2 ******************************************************************************
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3 * @file stm32f10x_crc.c
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4 * @author MCD Application Team
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7 * @brief This file provides all the CRC firmware functions.
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8 ******************************************************************************
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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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18 * <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2>
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21 /* Includes ------------------------------------------------------------------*/
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22 #include "stm32f10x_crc.h"
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24 /** @addtogroup STM32F10x_StdPeriph_Driver
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29 * @brief CRC driver modules
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33 /** @defgroup CRC_Private_TypesDefinitions
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41 /** @defgroup CRC_Private_Defines
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45 /* CR register bit mask */
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47 #define CR_RESET_Set ((uint32_t)0x00000001)
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53 /** @defgroup CRC_Private_Macros
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61 /** @defgroup CRC_Private_Variables
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69 /** @defgroup CRC_Private_FunctionPrototypes
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77 /** @defgroup CRC_Private_Functions
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82 * @brief Resets the CRC Data register (DR).
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86 void CRC_ResetDR(void)
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88 /* Reset CRC generator */
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89 CRC->CR = CR_RESET_Set;
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93 * @brief Computes the 32-bit CRC of a given data word(32-bit).
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94 * @param Data: data word(32-bit) to compute its CRC
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95 * @retval 32-bit CRC
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97 uint32_t CRC_CalcCRC(uint32_t Data)
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105 * @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
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106 * @param pBuffer: pointer to the buffer containing the data to be computed
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107 * @param BufferLength: length of the buffer to be computed
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108 * @retval 32-bit CRC
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110 uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
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112 uint32_t index = 0;
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114 for(index = 0; index < BufferLength; index++)
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116 CRC->DR = pBuffer[index];
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122 * @brief Returns the current CRC value.
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124 * @retval 32-bit CRC
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126 uint32_t CRC_GetCRC(void)
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132 * @brief Stores a 8-bit data in the Independent Data(ID) register.
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133 * @param IDValue: 8-bit value to be stored in the ID register
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136 void CRC_SetIDRegister(uint8_t IDValue)
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138 CRC->IDR = IDValue;
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142 * @brief Returns the 8-bit data stored in the Independent Data(ID) register
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144 * @retval 8-bit value of the ID register
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146 uint8_t CRC_GetIDRegister(void)
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163 /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
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