--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/CRC/main.c	Mon Oct 03 21:19:15 2011 +1030
@@ -0,0 +1,291 @@
+/**
+  ******************************************************************************
+  * @file    SPI/CRC/main.c 
+  * @author  MCD Application Team
+  * @version V3.5.0
+  * @date    08-April-2011
+  * @brief   Main program body
+  ******************************************************************************
+  * @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 "stm32f10x.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup SPI_CRC
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+#define BufferSize  32
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+SPI_InitTypeDef  SPI_InitStructure;
+uint16_t SPI1_Buffer_Tx[BufferSize] = {0x0102, 0x0304, 0x0506, 0x0708, 0x090A, 0x0B0C,
+                                  0x0D0E, 0x0F10, 0x1112, 0x1314, 0x1516, 0x1718,
+                                  0x191A, 0x1B1C, 0x1D1E, 0x1F20, 0x2122, 0x2324,
+                                  0x2526, 0x2728, 0x292A, 0x2B2C, 0x2D2E, 0x2F30,
+                                  0x3132, 0x3334, 0x3536, 0x3738, 0x393A, 0x3B3C,
+                                  0x3D3E, 0x3F40};
+uint16_t SPI2_Buffer_Tx[BufferSize] = {0x5152, 0x5354, 0x5556, 0x5758, 0x595A, 0x5B5C,
+                                  0x5D5E, 0x5F60, 0x6162, 0x6364, 0x6566, 0x6768,
+                                  0x696A, 0x6B6C, 0x6D6E, 0x6F70, 0x7172, 0x7374,
+                                  0x7576, 0x7778, 0x797A, 0x7B7C, 0x7D7E, 0x7F80,
+                                  0x8182, 0x8384, 0x8586, 0x8788, 0x898A, 0x8B8C,
+                                  0x8D8E, 0x8F90};
+uint16_t SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize];
+uint32_t TxIdx = 0, RxIdx = 0;
+__IO uint16_t CRC1Value = 0, CRC2Value = 0;
+volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
+
+/* Private functions ---------------------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength);
+
+/**
+  * @brief  Main program
+  * @param  None
+  * @retval None
+  */
+int main(void)
+{
+  /*!< At this stage the microcontroller clock setting is already configured, 
+       this is done through SystemInit() function which is called from startup
+       file (startup_stm32f10x_xx.s) before to branch to application main.
+       To reconfigure the default setting of SystemInit() function, refer to
+       system_stm32f10x.c file
+     */     
+       
+  /* System clocks configuration ---------------------------------------------*/
+  RCC_Configuration();
+
+  /* GPIO configuration ------------------------------------------------------*/
+  GPIO_Configuration();
+
+  /* SPI1 configuration ------------------------------------------------------*/
+  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
+  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
+  SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
+  SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
+  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
+  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
+  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
+  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
+  SPI_InitStructure.SPI_CRCPolynomial = 7;
+  SPI_Init(SPI1, &SPI_InitStructure);
+
+  /* SPI2 configuration ------------------------------------------------------*/
+  SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
+  SPI_Init(SPI2, &SPI_InitStructure);
+
+  /* Enable SPI1 CRC calculation */
+  SPI_CalculateCRC(SPI1, ENABLE);
+  /* Enable SPI2 CRC calculation */
+  SPI_CalculateCRC(SPI2, ENABLE);
+
+  /* Enable SPI1 */
+  SPI_Cmd(SPI1, ENABLE);
+  /* Enable SPI2 */
+  SPI_Cmd(SPI2, ENABLE);
+
+  /* Transfer procedure */
+  while (TxIdx < BufferSize - 1)
+  {
+    /* Wait for SPI1 Tx buffer empty */
+    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
+    /* Send SPI2 data */
+    SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx]);
+    /* Send SPI1 data */
+    SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx++]);
+    /* Wait for SPI2 data reception */
+    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
+    /* Read SPI2 received data */
+    SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2);
+    /* Wait for SPI1 data reception */
+    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
+    /* Read SPI1 received data */
+    SPI1_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI1);
+  }
+
+  /* Wait for SPI1 Tx buffer empty */
+  while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
+  /* Wait for SPI2 Tx buffer empty */
+  while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
+
+  /* Send last SPI2_Buffer_Tx data */
+  SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx]);
+  /* Enable SPI2 CRC transmission */
+  SPI_TransmitCRC(SPI2);
+  /* Send last SPI1_Buffer_Tx data */
+  SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx]);
+  /* Enable SPI1 CRC transmission */
+  SPI_TransmitCRC(SPI1);
+
+  /* Wait for SPI1 last data reception */
+  while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
+  /* Read SPI1 last received data */
+  SPI1_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI1);
+
+  /* Wait for SPI2 last data reception */
+  while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
+  /* Read SPI2 last received data */
+  SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2);
+
+  /* Wait for SPI1 data reception: CRC transmitted by SPI2 */
+  while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
+  /* Wait for SPI2 data reception: CRC transmitted by SPI1 */
+  while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
+
+  /* Check the received data with the send ones */
+  TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
+  TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
+  /* TransferStatus1, TransferStatus2 = PASSED, if the data transmitted and received
+     are correct */
+  /* TransferStatus1, TransferStatus2 = FAILED, if the data transmitted and received
+     are different */
+
+  /* Test on the SPI1 CRC Error flag */
+  if ((SPI_I2S_GetFlagStatus(SPI1, SPI_FLAG_CRCERR)) == SET)
+  {
+    TransferStatus2 = FAILED;
+  }
+
+  /* Test on the SPI2 CRC Error flag */
+  if ((SPI_I2S_GetFlagStatus(SPI2, SPI_FLAG_CRCERR)) == SET)
+  {
+    TransferStatus1 = FAILED;
+  }
+
+  /* Read SPI1 received CRC value */
+  CRC1Value = SPI_I2S_ReceiveData(SPI1);
+  /* Read SPI2 received CRC value */
+  CRC2Value = SPI_I2S_ReceiveData(SPI2);
+
+  while (1)
+  {}
+}
+
+/**
+  * @brief  Configures the different system clocks.
+  * @param  None
+  * @retval None
+  */
+void RCC_Configuration(void)
+{
+  /* PCLK2 = HCLK/2 */
+  RCC_PCLK2Config(RCC_HCLK_Div2);
+
+  /* Enable peripheral clocks --------------------------------------------------*/
+  /* GPIOA, GPIOB and SPI1 clock enable */
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
+                         RCC_APB2Periph_SPI1, ENABLE);
+
+  /* SPI2 Periph clock enable */
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
+}
+
+/**
+  * @brief  Configures the different GPIO ports.
+  * @param  None
+  * @retval None
+  */
+void GPIO_Configuration(void)
+{
+  GPIO_InitTypeDef GPIO_InitStructure;
+
+  /* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/
+  /* Confugure SCK and MOSI pins as Alternate Function Push Pull */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+  /* Confugure MISO pin as Input Floating  */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+  
+  /* Configure SPI2 pins: SCK, MISO and MOSI ---------------------------------*/
+  /* Confugure SCK and MOSI pins as Input Floating */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_15;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+  GPIO_Init(GPIOB, &GPIO_InitStructure);
+  /* Confugure MISO pin as Alternate Function Push Pull */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+  GPIO_Init(GPIOB, &GPIO_InitStructure);
+ 
+}
+
+/**
+  * @brief  Compares two buffers.
+  * @param  pBuffer1, pBuffer2: buffers to be compared.
+  * @param  BufferLength: buffer's length
+  * @retval PASSED: pBuffer1 identical to pBuffer2
+  *         FAILED: pBuffer1 differs from pBuffer2
+  */
+TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength)
+{
+  while (BufferLength--)
+  {
+    if (*pBuffer1 != *pBuffer2)
+    {
+      return FAILED;
+    }
+
+    pBuffer1++;
+    pBuffer2++;
+  }
+
+  return PASSED;
+}
+
+#ifdef  USE_FULL_ASSERT
+
+/**
+  * @brief  Reports the name of the source file and the source line number
+  *         where the assert_param error has occurred.
+  * @param  file: pointer to the source file name
+  * @param  line: assert_param error line source number
+  * @retval None
+  */
+void assert_failed(uint8_t* file, uint32_t line)
+{
+  /* User can add his own implementation to report the file name and line number,
+     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+  /* Infinite loop */
+  while (1)
+  {}
+}
+
+#endif
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/