| /** | |
| ****************************************************************************** | |
| * @file stm32f10x_crc.c | |
| * @author MCD Application Team | |
| * @version V3.0.0 | |
| * @date 04/06/2009 | |
| * @brief This file provides all the CRC firmware functions. | |
| ****************************************************************************** | |
| * @copy | |
| * | |
| * 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 2009 STMicroelectronics</center></h2> | |
| */ | |
| /* Includes ------------------------------------------------------------------*/ | |
| #include "stm32f10x_crc.h" | |
| /** @addtogroup StdPeriph_Driver | |
| * @{ | |
| */ | |
| /** @defgroup CRC | |
| * @brief CRC driver modules | |
| * @{ | |
| */ | |
| /** @defgroup CRC_Private_TypesDefinitions | |
| * @{ | |
| */ | |
| /** | |
| * @} | |
| */ | |
| /** @defgroup CRC_Private_Defines | |
| * @{ | |
| */ | |
| /* CR register bit mask */ | |
| #define CR_RESET_Set ((uint32_t)0x00000001) | |
| /** | |
| * @} | |
| */ | |
| /** @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 = CR_RESET_Set; | |
| } | |
| /** | |
| * @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 2009 STMicroelectronics *****END OF FILE****/ |