Added STM32F4xx StdPeriph Driver sources

[fw/stlink] / example / stm32f4 / STM32F4xx_StdPeriph_Driver / src / stm32f4xx_crc.c

diff --git a/example/stm32f4/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_crc.c b/example/stm32f4/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_crc.c
new file mode 100644 (file)
index 0000000..5c27330
--- /dev/null
+++ b/example/stm32f4/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_crc.c
@@ -0,0 +1,127 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_crc.c
+  * @author  MCD Application Team
+  * @version V1.0.0RC1
+  * @date    25-August-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>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_crc.h"
+
+/** @addtogroup STM32F4xx_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 2011 STMicroelectronics *****END OF FILE****/