Diff: targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_crc.c

Revision:

126:549ba18ddd81

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_crc.c	Wed Mar 19 16:00:09 2014 +0000
@@ -0,0 +1,175 @@
+/**
+  ******************************************************************************
+  * @file    stm32f10x_crc.c
+  * @author  MCD Application Team
+  * @version V3.6.1
+  * @date    05-March-2012
+  * @brief   This file provides all the CRC firmware functions.
+ *******************************************************************************
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * 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 "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 STMicroelectronics *****END OF FILE****/