main.c

STM32的SPI1与SPI2通信

/**
  ******************************************************************************
  * @file    USART/DMA_Interrupt/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"
#include "platform_config.h"

/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup USART_DMA_Interrupt
  * @{
  */ 

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

/* Private define ------------------------------------------------------------*/


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

/* Private variables ---------------------------------------------------------*/
unsigned int i,j;

unsigned char a[10]={0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa}; 
unsigned char b[10]={0,0,0,0,0,0,0,0,0,0};

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
//void NVIC_Configuration(void);
//void DMA_Configuration(void);
void SPI2_Configureation(void);
void SPI1_Configureation(void);


/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{
  /* System Clocks Configuration */
  RCC_Configuration();
       
  /* NVIC configuration */
  //NVIC_Configuration();

  /* Configure the GPIO ports */
  GPIO_Configuration();

  /* Configure the SPI1 */
  SPI1_Configureation();

  /* Configure the SPI2 */
  SPI2_Configureation();

  while(1)
  {

	  for(j=0; j<10; j++)
	  {
			// 等待上个数据未发送完毕
			while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
			
			// 通过SPI硬件发送1个字节
			SPI_I2S_SendData(SPI1, a[j]);
			
			// 等待接收一个字节任务完成
			while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
			
			// 返回从SPI总线读到的数据
			b[j] = SPI_I2S_ReceiveData(SPI2);
			

		}

		if(b[5] == a[5])
		{
			GPIO_ResetBits(GPIOD, GPIO_Pin_6);
			for(i=0; i<0x3fffff; i++);
			GPIO_SetBits(GPIOD, GPIO_Pin_6);
			for(i=0; i<0x3fffff; i++);	
		}	  	
		

		for(j=0; j<10; j++)
		{
			b[j] = 0;
		}
			
  }

}

/**
  * @brief  Configures the different system clocks.
  * @param  None
  * @retval None
  */
void RCC_Configuration(void)
{    

  /* Enable GPIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC	| RCC_APB2Periph_GPIOD
                       | RCC_APB2Periph_GPIOF | RCC_APB2Periph_SPI1 | RCC_APB2Periph_AFIO, 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;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOF, ENABLE);

 	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOD, &GPIO_InitStructure);
	
	GPIO_SetBits(GPIOD, GPIO_Pin_6); 

	//SPI1
	/* 配置SPI引脚SCK、MISO 和 MOSI为复用推挽模式 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7; //SF_PIN_SCK | SF_PIN_MISO | SF_PIN_MOSI;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	/* 配置片选口线为推挽输出模式 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	GPIO_ResetBits(GPIOA, GPIO_Pin_4);

	//SPI2
	/* 配置SPI引脚SCK、MISO 和 MOSI为复用推挽模式 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; //SF_PIN_SCK | SF_PIN_MISO | SF_PIN_MOSI;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

	/* 配置片选口线为浮空输入模式 */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

}

/**
  * @brief  Configures the nested vectored interrupt controller.
  * @param  None
  * @retval None
  */
void NVIC_Configuration(void)
{
   NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable the USART1 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Enable the USARTz Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel5_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}


/**
  * @brief  Configures the SPI2.
  * @param  None
  * @retval None
  */
void SPI2_Configureation(void)
{
	SPI_InitTypeDef  SPI_InitStructure;

	/* 配置SPI硬件参数 */
	SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;	/* 数据方向：2线全双工 */
	SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;		/* STM32的SPI工作模式 ：主机模式 */
	SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;	/* 数据位长度 ： 8位 */
	/* SPI_CPOL和SPI_CPHA结合使用决定时钟和数据采样点的相位关系、
	   本例配置: 总线空闲是高电平,第2个边沿（上升沿采样数据)
	*/
	SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;			/* 时钟上升沿采样数据 */
	SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;		/* 时钟的第2个边沿采样数据 */
	SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;			/* 片选控制方式：软件控制 */
	SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;	/* 波特率预分频系数：4分频 */
	SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;	/* 数据位传输次序：高位先传 */
	SPI_InitStructure.SPI_CRCPolynomial = 7;			/* CRC多项式寄存器，复位后为7。本例程不用 */
	SPI_Init(SPI2, &SPI_InitStructure);

	SPI_Cmd(SPI2, ENABLE);		/* 使能SPI  */

}

/**
  * @brief  Configures the SPI1.
  * @param  None
  * @retval None
  */
void SPI1_Configureation(void)
{
	SPI_InitTypeDef  SPI_InitStructure;

	/* 配置SPI硬件参数 */
	SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;	/* 数据方向：2线全双工 */
	SPI_InitStructure.SPI_Mode = SPI_Mode_Master;		/* STM32的SPI工作模式 ：主机模式 */
	SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;	/* 数据位长度 ： 8位 */
	/* SPI_CPOL和SPI_CPHA结合使用决定时钟和数据采样点的相位关系、
	   本例配置: 总线空闲是高电平,第2个边沿（上升沿采样数据)
	*/
	SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;			/* 时钟上升沿采样数据 */
	SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;		/* 时钟的第2个边沿采样数据 */
	SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;			/* 片选控制方式：软件控制 */
	SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;	/* 波特率预分频系数：4分频 */
	SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;	/* 数据位传输次序：高位先传 */
	SPI_InitStructure.SPI_CRCPolynomial = 7;			/* CRC多项式寄存器，复位后为7。本例程不用 */
	SPI_Init(SPI1, &SPI_InitStructure);

	SPI_Cmd(SPI1, ENABLE);		/* 使能SPI  */

}
/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/