2 ******************************************************************************
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3 * @file stm32l1xx_crc.c
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4 * @author MCD Application Team
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6 * @date 31-December-2010
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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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19 ******************************************************************************
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22 /* Includes ------------------------------------------------------------------*/
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23 #include "stm32l1xx_crc.h"
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25 /** @addtogroup STM32L1xx_StdPeriph_Driver
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30 * @brief CRC driver modules
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34 /* Private typedef -----------------------------------------------------------*/
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35 /* Private define ------------------------------------------------------------*/
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36 /* Private macro -------------------------------------------------------------*/
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37 /* Private variables ---------------------------------------------------------*/
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38 /* Private function prototypes -----------------------------------------------*/
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39 /* Private functions ---------------------------------------------------------*/
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41 /** @defgroup CRC_Private_Functions
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46 * @brief Resets the CRC Data register (DR).
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50 void CRC_ResetDR(void)
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52 /* Reset CRC generator */
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53 CRC->CR = CRC_CR_RESET;
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57 * @brief Computes the 32-bit CRC of a given data word(32-bit).
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58 * @param Data: data word(32-bit) to compute its CRC
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59 * @retval 32-bit CRC
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61 uint32_t CRC_CalcCRC(uint32_t Data)
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69 * @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
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70 * @param pBuffer: pointer to the buffer containing the data to be computed
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71 * @param BufferLength: length of the buffer to be computed
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72 * @retval 32-bit CRC
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74 uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
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78 for(index = 0; index < BufferLength; index++)
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80 CRC->DR = pBuffer[index];
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86 * @brief Returns the current CRC value.
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88 * @retval 32-bit CRC
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90 uint32_t CRC_GetCRC(void)
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96 * @brief Stores a 8-bit data in the Independent Data(ID) register.
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97 * @param IDValue: 8-bit value to be stored in the ID register
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100 void CRC_SetIDRegister(uint8_t IDValue)
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102 CRC->IDR = IDValue;
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106 * @brief Returns the 8-bit data stored in the Independent Data(ID) register
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108 * @retval 8-bit value of the ID register
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110 uint8_t CRC_GetIDRegister(void)
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127 /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
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