stm32f10x_crc.c
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/**
******************************************************************************
* @file stm32f10x_crc.c
* @author MCD Application Team
* @version V3.5.0
* @date 11-March-2011
* @brief This file provides all the CRC firmware functions.
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
******************************************************************************
*/
/* 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);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/