159 lines
2.8 KiB
C
159 lines
2.8 KiB
C
/**
|
|
******************************************************************************
|
|
* @file stm32f10x_crc.c
|
|
* @author MCD Application Team
|
|
* @version V3.6.2
|
|
* @date 17-September-2021
|
|
* @brief This file provides all the CRC firmware functions.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* Copyright (c) 2012 STMicroelectronics.
|
|
* All rights reserved.
|
|
*
|
|
* This software is licensed under terms that can be found in the LICENSE file
|
|
* in the root directory of this software component.
|
|
* If no LICENSE file comes with this software, it is provided AS-IS.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "stm32f10x_crc.h"
|
|
|
|
/** @addtogroup STM32F10x_StdPeriph_Driver
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup CRC
|
|
* @brief CRC driver modules
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup CRC_Private_TypesDefinitions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup CRC_Private_Defines
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup CRC_Private_Macros
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup CRC_Private_Variables
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup CRC_Private_FunctionPrototypes
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup CRC_Private_Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Resets the CRC Data register (DR).
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void CRC_ResetDR(void)
|
|
{
|
|
/* Reset CRC generator */
|
|
CRC->CR = CRC_CR_RESET;
|
|
}
|
|
|
|
/**
|
|
* @brief Computes the 32-bit CRC of a given data word(32-bit).
|
|
* @param Data: data word(32-bit) to compute its CRC
|
|
* @retval 32-bit CRC
|
|
*/
|
|
uint32_t CRC_CalcCRC(uint32_t Data)
|
|
{
|
|
CRC->DR = Data;
|
|
|
|
return (CRC->DR);
|
|
}
|
|
|
|
/**
|
|
* @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
|
|
* @param pBuffer: pointer to the buffer containing the data to be computed
|
|
* @param BufferLength: length of the buffer to be computed
|
|
* @retval 32-bit CRC
|
|
*/
|
|
uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
|
|
{
|
|
uint32_t index = 0;
|
|
|
|
for(index = 0; index < BufferLength; index++)
|
|
{
|
|
CRC->DR = pBuffer[index];
|
|
}
|
|
return (CRC->DR);
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the current CRC value.
|
|
* @param None
|
|
* @retval 32-bit CRC
|
|
*/
|
|
uint32_t CRC_GetCRC(void)
|
|
{
|
|
return (CRC->DR);
|
|
}
|
|
|
|
/**
|
|
* @brief Stores a 8-bit data in the Independent Data(ID) register.
|
|
* @param IDValue: 8-bit value to be stored in the ID register
|
|
* @retval None
|
|
*/
|
|
void CRC_SetIDRegister(uint8_t IDValue)
|
|
{
|
|
CRC->IDR = IDValue;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the 8-bit data stored in the Independent Data(ID) register
|
|
* @param None
|
|
* @retval 8-bit value of the ID register
|
|
*/
|
|
uint8_t CRC_GetIDRegister(void)
|
|
{
|
|
return (CRC->IDR);
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|