mbed library sources
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_crc.c
- Committer:
- mbed_official
- Date:
- 2014-02-26
- Revision:
- 106:ced8cbb51063
- Parent:
- 80:66393a7b209d
File content as of revision 106:ced8cbb51063:
/** ****************************************************************************** * @file stm32l1xx_crc.c * @author MCD Application Team * @version V1.3.0 * @date 31-January-2014 * @brief This file provides all the CRC firmware functions. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32l1xx_crc.h" /** @addtogroup STM32L1xx_StdPeriph_Driver * @{ */ /** @defgroup CRC * @brief CRC driver modules * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /** @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 STMicroelectronics *****END OF FILE****/