mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_crc.c
- Revision:
- 76:aeb1df146756
- Child:
- 80:66393a7b209d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_crc.c Mon Jan 27 14:30:07 2014 +0000 @@ -0,0 +1,133 @@ +/** + ****************************************************************************** + * @file stm32l1xx_crc.c + * @author MCD Application Team + * @version V1.2.0 + * @date 22-February-2013 + * @brief This file provides all the CRC firmware functions. + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2> + * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + +/* 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****/