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标题: STM32 SPI通信 [打印本页]

作者: 梦景 时间: 2011-9-7 23:10 标题: STM32 SPI通信

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name       : main.c
* Author          : MCD Application Team
* Version          : V1.0
* Date             : 10/08/2007
* Description       : Main program body
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"

/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define BufferSize 32

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SPI_InitTypeDef SPI_InitStructure;
u8 SPI1_Buffer_Tx[BufferSize] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
                              0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
                              0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,
                              0x1C,0x1D,0x1E,0x1F,0x20};
u8 SPI2_Buffer_Tx[BufferSize] = {0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,
                              0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,0x60,0x61,0x62,
                              0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,
                              0x6C,0x6D,0x6E,0x6F,0x70};
u8 SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize];
u8 Tx_Idx = 0, Rx_Idx = 0, k = 0;
volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
volatile TestStatus TransferStatus3 = FAILED, TransferStatus4 = FAILED;
ErrorStatus HSEStartUpStatus;

/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);

/*******************************************************************************
* Function Name  : main
* Description : Main program
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/
  NVIC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/
  GPIO_Configuration();

  /* 1st phase: SPI1 Master and SPI2 Slave */
  /* SPI1 Config -------------------------------------------------------------*/
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  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_4;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(SPI1, &SPI_InitStructure);

  /* SPI2 Config -------------------------------------------------------------*/
  SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
  SPI_Init(SPI2, &SPI_InitStructure);

  /* Enable SPI1 */
  SPI_Cmd(SPI1, ENABLE);
  /* Enable SPI2 */
  SPI_Cmd(SPI2, ENABLE);

  /* Transfer procedure */
  while(Tx_Idx<BufferSize)
  {
/* Wait for SPI1 Tx buffer empty */
while(SPI_GetFlagStatus(SPI1, SPI_FLAG_TXE)==RESET);
/* Send SPI2 data */
SPI_SendData(SPI2, SPI2_Buffer_Tx[Tx_Idx]);

/* Send SPI1 data */
SPI_SendData(SPI1, SPI1_Buffer_Tx[Tx_Idx++]);
/* Wait for SPI2 data reception */
while(SPI_GetFlagStatus(SPI2, SPI_FLAG_RXNE)==RESET);
/* Read SPI2 received data */
SPI2_Buffer_Rx[Rx_Idx] = SPI_ReceiveData(SPI2);
/* Wait for SPI1 data reception */
while(SPI_GetFlagStatus(SPI1, SPI_FLAG_RXNE)==RESET);
/* Read SPI1 received data */
SPI1_Buffer_Rx[Rx_Idx++] = SPI_ReceiveData(SPI1);

  }

  /* Check the corectness of written dada */
  TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
  TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
  /* TransferStatus1, TransferStatus2 = PASSED, if the transmitted and received data
   are equal */
  /* TransferStatus1, TransferStatus2 = FAILED, if the transmitted and received data
   are different */

  /* 2nd phase: SPI1 Slave and SPI2 Master */
  /* SPI1 Re-configuration ---------------------------------------------------*/
  SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
  SPI_Init(SPI1, &SPI_InitStructure);

  /* SPI2 Re-configuration ---------------------------------------------------*/
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_Init(SPI2, &SPI_InitStructure);

  /* Reset Tx_Idx, Rx_Idx indexes and receive tables values */
  Tx_Idx=0;
  Rx_Idx=0;
  for(k=0; k<BufferSize; k++)  SPI2_Buffer_Rx[k]=0;
  for(k=0; k<BufferSize; k++)  SPI1_Buffer_Rx[k]=0;

  /* Transfer procedure */
  while(Tx_Idx<BufferSize)
  {
/* Wait for SPI2 Tx buffer empty */
while(SPI_GetFlagStatus(SPI2, SPI_FLAG_TXE)==RESET);
/* Send SPI1 data */
SPI_SendData(SPI1, SPI1_Buffer_Tx[Tx_Idx]);
/* Send SPI2 data */
SPI_SendData(SPI2, SPI2_Buffer_Tx[Tx_Idx++]);
/* Wait for SPI1 data reception */
while(SPI_GetFlagStatus(SPI1, SPI_FLAG_RXNE)==RESET);
/* Read SPI1 received data */
SPI1_Buffer_Rx[Rx_Idx] = SPI_ReceiveData(SPI1);
/* Wait for SPI2 data reception */
while(SPI_GetFlagStatus(SPI2, SPI_FLAG_RXNE)==RESET);
/* Read SPI2 received data */
SPI2_Buffer_Rx[Rx_Idx++] = SPI_ReceiveData(SPI2);
  }

  /* Check the corectness of written dada */
  TransferStatus3 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
  TransferStatus4 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
  /* TransferStatus3, TransferStatus4 = PASSED, if the transmitted and received data
   are equal */
  /* TransferStatus3, TransferStatus4 = FAILED, if the transmitted and received data
   are different */

  while (1)
  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description : Configures the different system clocks.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK/2 */
RCC_PCLK2Config(RCC_HCLK_Div2);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}

/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }

/* 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);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure SPI2 pins: SCK, MISO and MOSI ---------------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description : Configures NVIC and Vector Table base location.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description : Compares two buffers.
* Input       : - pBuffer1, pBuffer2: buffers to be compared.
*             : - BufferLength: buffer's length
* Output       : None
* Return       : PASSED: pBuffer1 identical to pBuffer2
*                FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
{
  while(BufferLength--)
  {
if(*pBuffer1 != *pBuffer2)
{
   return FAILED;
}

pBuffer1++;
pBuffer2++;
  }

  return PASSED;
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description : Reports the name of the source file and the source line number
*                where the assert_param error has occurred.
* Input       : - file: pointer to the source file name
*                - line: assert_param error line source number
* Output       : None
* Return       : None
*******************************************************************************/
void assert_failed(u8* file, u32 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 2007 STMicroelectronics *****END OF FILE****/

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name       : main.c
* Author          : MCD Application Team
* Version          : V1.0
* Date             : 10/08/2007
* Description       : Main program body
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"

/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define BufferSize 32

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SPI_InitTypeDef SPI_InitStructure;
u8 SPI1_Buffer_Tx[BufferSize] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
                              0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
                              0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,
                              0x1C,0x1D,0x1E,0x1F,0x20};
u8 SPI2_Buffer_Rx[BufferSize];
vu8 Tx_Idx = 0, Rx_Idx = 0;
volatile TestStatus TransferStatus = FAILED;
ErrorStatus HSEStartUpStatus;

/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);

/*******************************************************************************
* Function Name  : main
* Description : Main program
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/
  NVIC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/
  GPIO_Configuration();

  /* SPI1 configuration ------------------------------------------------------*/
  SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  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_4;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(SPI1, &SPI_InitStructure);

  /* SPI2 configuration ------------------------------------------------------*/
  SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;

  SPI_Init(SPI2, &SPI_InitStructure);

  /* Enable SPI1 TXE interrupt */
  SPI_ITConfig(SPI1, SPI_IT_TXE, ENABLE);
  /* Enable SPI2 RXNE interrupt */
  SPI_ITConfig(SPI2, SPI_IT_RXNE, ENABLE);

  /* Enable SPI2 */
  SPI_Cmd(SPI2, ENABLE);
  /* Enable SPI1 */
  SPI_Cmd(SPI1, ENABLE);

  /* Transfer procedure */
  while(Rx_Idx < BufferSize)
  {
  }

  /* Check the corectness of written dada */
  TransferStatus = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize);
  /* TransferStatus = PASSED, if the transmitted and received data
   are equal */
  /* TransferStatus = FAILED, if the transmitted and received data
   are different */

  while (1)

  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description : Configures the different system clocks.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK/2 */
RCC_PCLK2Config(RCC_HCLK_Div2);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}

/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }

/* 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);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure SPI1 pins: SCK and MOSI ---------------------------------------*/
  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);

  /* Configure SPI2 pins: SCK and MISO ---------------------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description : Configure the nested vectored interrupt controller.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif

  /* 1 bit for pre-emption priority, 3 bits for subpriority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  /* Configure and enable SPI1 interrupt -------------------------------------*/
  NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Configure and enable SPI2 interrupt -------------------------------------*/
  NVIC_InitStructure.NVIC_IRQChannel = SPI2_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_Init(&NVIC_InitStructure);
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description : Compares two buffers.
* Input       : - pBuffer1, pBuffer2: buffers to be compared.
*             : - BufferLength: buffer's length
* Output       : None
* Return       : PASSED: pBuffer1 identical to pBuffer2
*                FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
{
  while(BufferLength--)
  {
if(*pBuffer1 != *pBuffer2)
{
   return FAILED;
}

pBuffer1++;
pBuffer2++;
  }

  return PASSED;
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description : Reports the name of the source file and the source line number
*                where the assert_param error has occurred.
* Input       : - file: pointer to the source file name
*                - line: assert_param error line source number
* Output       : None
* Return       : None
*******************************************************************************/
void assert_failed(u8* file, u32 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 2007 STMicroelectronics *****END OF FILE****/

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name       : main.c
* Author          : MCD Application Team
* Version          : V1.0
* Date             : 10/08/2007
* Description       : Main program body
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"

/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define BufferSize  32

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SPI_InitTypeDef  SPI_InitStructure;
u16 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};
u16 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};
u16 SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize];
u8 Tx_Idx = 0, Rx_Idx = 0, k = 0;
vu16 CRC1_Value = 0, CRC2_Value = 0;
volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
ErrorStatus HSEStartUpStatus;

/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
TestStatus Buffercmp(u16* pBuffer1, u16* pBuffer2, u16 BufferLength);

/*******************************************************************************
* Function Name  : main
* Description : Main program
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/
  NVIC_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(Tx_Idx < BufferSize-1)
  {
/* Wait for SPI1 Tx buffer empty */
while(SPI_GetFlagStatus(SPI1, SPI_FLAG_TXE)==RESET);
/* Send SPI2 data */
SPI_SendData(SPI2, SPI2_Buffer_Tx[Tx_Idx]);
/* Send SPI1 data */
SPI_SendData(SPI1, SPI1_Buffer_Tx[Tx_Idx++]);
/* Wait for SPI2 data reception */

while(SPI_GetFlagStatus(SPI2, SPI_FLAG_RXNE)==RESET);
/* Read SPI2 received data */
SPI2_Buffer_Rx[Rx_Idx] = SPI_ReceiveData(SPI2);
/* Wait for SPI1 data reception */
while(SPI_GetFlagStatus(SPI1, SPI_FLAG_RXNE)==RESET);
/* Read SPI1 received data */
SPI1_Buffer_Rx[Rx_Idx++] = SPI_ReceiveData(SPI1);
  }

  /* Wait for SPI1 Tx buffer empty */
  while(SPI_GetFlagStatus(SPI1, SPI_FLAG_TXE)==RESET);
  /* Wait for SPI2 Tx buffer empty */
  while(SPI_GetFlagStatus(SPI2, SPI_FLAG_TXE)==RESET);

  /* Send last SPI2_Buffer_Tx data */
  SPI_SendData(SPI2, SPI2_Buffer_Tx[Tx_Idx]);
  /* Enable SPI2 CRC transmission */
  SPI_TransmitCRC(SPI2);
  /* Send last SPI1_Buffer_Tx data */
  SPI_SendData(SPI1, SPI1_Buffer_Tx[Tx_Idx]);
  /* Enable SPI1 CRC transmission */
  SPI_TransmitCRC(SPI1);

  /* Wait for SPI1 last data reception */

  while(SPI_GetFlagStatus(SPI1, SPI_FLAG_RXNE)==RESET);

  /* Read SPI1 last received data */
  SPI1_Buffer_Rx[Rx_Idx] = SPI_ReceiveData(SPI1);

  /* Wait for SPI1 last data reception */

  while(SPI_GetFlagStatus(SPI2, SPI_FLAG_RXNE)==RESET);
  /* Read SPI2 last received data */
  SPI2_Buffer_Rx[Rx_Idx] = SPI_ReceiveData(SPI2);

  /* Wait for SPI1 data reception: CRC transmitted by SPI2 */
  while(SPI_GetFlagStatus(SPI1, SPI_FLAG_RXNE)==RESET);
  /* Read SPI1 received CRC value */
  CRC1_Value = SPI_ReceiveData(SPI1);

  /* Wait for SPI2 data reception: CRC transmitted by SPI1 */
  while(SPI_GetFlagStatus(SPI2, SPI_FLAG_RXNE)==RESET);
  /* Read SPI2 received CRC value */
  CRC2_Value = SPI_ReceiveData(SPI2);

  /* Check the corectness of written dada */
  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 */

  while (1)
  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description : Configures the different system clocks.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK/2 */
RCC_PCLK2Config(RCC_HCLK_Div2);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}

/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }

/* 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);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure SPI2 pins: SCK, MISO and MOSI ---------------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description : Configure the nested vectored interrupt controller.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description : Compares two buffers.
* Input       : - pBuffer1, pBuffer2: buffers to be compared.
*             : - BufferLength: buffer's length
* Output       : None
* Return       : PASSED: pBuffer1 identical to pBuffer2
*                FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u16* pBuffer1, u16* pBuffer2, u16 BufferLength)
{
  while(BufferLength--)
  {
if(*pBuffer1 != *pBuffer2)
{
   return FAILED;
}

pBuffer1++;
pBuffer2++;
  }

  return PASSED;
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description : Reports the name of the source file and the source line number
*                where the assert_param error has occurred.
* Input       : - file: pointer to the source file name
*                - line: assert_param error line source number
* Output       : None
* Return       : None
*******************************************************************************/
void assert_failed(u8* file, u32 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 2007 STMicroelectronics *****END OF FILE****/

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name       : main.c
* Author          : MCD Application Team
* Version          : V1.0
* Date             : 10/08/2007
* Description       : Main program body
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"

/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define SPI1_DR_Address  0x4001300C
#define BufferSize    32

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
SPI_InitTypeDef  SPI_InitStructure;
DMA_InitTypeDef  DMA_InitStructure;

u8 SPI2_Buffer_Tx[BufferSize] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
                              0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
                              0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,
                              0x1C,0x1D,0x1E,0x1F,0x20};
u8 SPI1_Buffer_Rx[BufferSize];
u8 Tx_Idx = 0, Rx_Idx = 0;
volatile TestStatus TransferStatus = FAILED;
ErrorStatus HSEStartUpStatus;

/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);

/*******************************************************************************
* Function Name  : main
* Description : Main program
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/
  NVIC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/
  GPIO_Configuration();

  /* DMA Channel2 configuration ----------------------------------------------*/
  DMA_DeInit(DMA_Channel2);
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SPI1_DR_Address;
  DMA_InitStructure.DMA_MemoryBaseAddr = (u32)SPI1_Buffer_Rx;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_BufferSize = BufferSize;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(DMA_Channel2, &DMA_InitStructure);

  /* SPI2 configuration ------------------------------------------------------*/
  SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Hard;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(SPI2, &SPI_InitStructure);

  /* SPI1 configuration ------------------------------------------------------*/
  SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
  SPI_Init(SPI1, &SPI_InitStructure);

  /* Enable SPI2 NSS output for master mode */
  SPI_SSOutputCmd(SPI2, ENABLE);

  /* Enable SPI1 Rx request */
  SPI_DMACmd(SPI1, SPI_DMAReq_Rx, ENABLE);

  /* Enable SPI1 */
  SPI_Cmd(SPI1, ENABLE);
  /* Enable SPI2 */
  SPI_Cmd(SPI2, ENABLE);

  /* Enable DMA Channel2 */
  DMA_Cmd(DMA_Channel2, ENABLE);

  /* Transfer procedure */
  while(Tx_Idx<32)
  {
/* Wait for SPI2 Tx buffer empty */
while(SPI_GetFlagStatus(SPI2, SPI_FLAG_TXE) == RESET);
/* Send SPI2 data */
SPI_SendData(SPI2, SPI2_Buffer_Tx[Tx_Idx++]);
  }

  /* Wait for DMA channel2 transfer complete */
  while(!DMA_GetFlagStatus(DMA_FLAG_TC2));

  /* Check the corectness of written data */
  TransferStatus = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
  /* TransferStatus = PASSED, if the transmitted and received data
   are equal */
  /* TransferStatus = FAILED, if the transmitted and received data
   are different */

  while (1)
  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description : Configures the different system clocks.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}

/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }

/* Enable peripheral clocks --------------------------------------------------*/
  /* DMA clock enable */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA, ENABLE);

  /* 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);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure SPI1 pins: NSS, SCK, MISO and MOSI ----------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure SPI2 pins: NSS, SCK, MISO and MOSI ----------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description : Configure the nested vectored interrupt controller.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description : Compares two buffers.
* Input       : - pBuffer1, pBuffer2: buffers to be compared.
*             : - BufferLength: buffer's length
* Output       : None
* Return       : PASSED: pBuffer1 identical to pBuffer2
*                FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
{
  while(BufferLength--)
  {
if(*pBuffer1 != *pBuffer2)
{
   return FAILED;
}

pBuffer1++;
pBuffer2++;
  }

  return PASSED;
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description : Reports the name of the source file and the source line number
*                where the assert_param error has occurred.
* Input       : - file: pointer to the source file name
*                - line: assert_param error line source number
* Output       : None
* Return       : None
*******************************************************************************/
void assert_failed(u8* file, u32 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 2007 STMicroelectronics *****END OF FILE****/

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name       : main.c
* Author          : MCD Application Team
* Version          : V1.0
* Date             : 10/08/2007
* Description       : Main program body
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "spi_flash.h"

/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/* Private define ------------------------------------------------------------*/
#define  FLASH_WriteAddress    0x700000
#define  FLASH_ReadAddress    FLASH_WriteAddress
#define  FLASH_SectorToErase FLASH_WriteAddress
#define  M25P64_FLASH_ID       0x202017
#define  BufferSize (countof(Tx_Buffer)-1)

/* Private macro -------------------------------------------------------------*/
#define countof(a) (sizeof(a) / sizeof(*(a)))

/* Private variables ---------------------------------------------------------*/
u8 Tx_Buffer[] = "STM32F10x SPI Firmware Library Example: communication with an M25P64 SPI FLASH";
u8 i, Rx_Buffer[BufferSize];
volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = PASSED;
vu32 FLASH_ID = 0;
ErrorStatus HSEStartUpStatus;

/* Private functions ---------------------------------------------------------*/
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength);
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);

/*******************************************************************************
* Function Name  : main
* Description : Main program
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif

  /* System clocks configuration ---------------------------------------------*/
  RCC_Configuration();

  /* NVIC configuration ------------------------------------------------------*/
  NVIC_Configuration();

  /* GPIO configuration ------------------------------------------------------*/
  GPIO_Configuration();

  /* Initialize the SPI FLASH driver -----------------------------------------*/
  SPI_FLASH_Init();

  /* Get SPI Flash ID */
  FLASH_ID = SPI_FLASH_ReadID();
  /* Check the SPI Flash ID */
  if(FLASH_ID == M25P64_FLASH_ID)
  {
/* OK: Turn on led connected to PC6 */
GPIO_WriteBit(GPIOC, GPIO_Pin_6, Bit_SET);
  }
  else
  {
/* Error: Turn on led connected to PC7 */
GPIO_WriteBit(GPIOC, GPIO_Pin_7, Bit_SET);
  }

  /* Perform a write in the Flash followed by a read of the written data -----*/
  /* Erase SPI FLASH Sector to write on */
  SPI_FLASH_SectorErase(FLASH_SectorToErase);

  /* Write Tx_Buffer data to SPI FLASH memory */
  SPI_FLASH_BufferWrite(Tx_Buffer, FLASH_WriteAddress, BufferSize);

  /* Read data from SPI FLASH memory */
  SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);

  /* Check the corectness of written dada */
  TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);
  /* TransferStatus1 = PASSED, if the transmitted and received data by SPI1
   are the same */
  /* TransferStatus1 = FAILED, if the transmitted and received data by SPI1
   are different */

  /* Perform an erase in the Flash followed by a read of the written data ----*/
  /* Erase SPI FLASH Sector to write on */
  SPI_FLASH_SectorErase(FLASH_SectorToErase);

  /* Read data from SPI FLASH memory */
  SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);

  /* Check the corectness of erasing operation dada */
  for(i=0; i<BufferSize; i++)
  {
if(Rx_Buffer[i] != 0xFF)
{
   TransferStatus2 = FAILED;
}
  }
  /* TransferStatus2 = PASSED, if the specified sector part is erased */
  /* TransferStatus2 = FAILED, if the specified sector part is not well erased  */

  while (1)
  {
  }
}

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description : Configures the different system clocks.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();

  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}

/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }

/* Enable peripheral clocks --------------------------------------------------*/
  /* Enable GPIOC clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure PC6 and PC7 as Output push-pull -------------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description : Configures Vector Table base location.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
}

/*******************************************************************************
* Function Name  : Buffercmp
* Description : Compares two buffers.
* Input       : - pBuffer1, pBuffer2: buffers to be compared.
*             : - BufferLength: buffer's length
* Output       : None
* Return       : PASSED: pBuffer1 identical to pBuffer2
*                FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u8* pBuffer1, u8* pBuffer2, u16 BufferLength)
{
  while(BufferLength--)
  {
if(*pBuffer1 != *pBuffer2)
{
   return FAILED;
}

pBuffer1++;
pBuffer2++;
  }

  return PASSED;
}

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description : Reports the name of the source file and the source line number
*                where the assert_param error has occurred.
* Input       : - file: pointer to the source file name
*                - line: assert_param error line source number
* Output       : None
* Return       : None
*******************************************************************************/
void assert_failed(u8* file, u32 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 2007 STMicroelectronics *****END OF FILE****/

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