EEPW论坛

首先，我用的是手柄做的无线模块的检测，通过写入一个地址然后读出，来检测无线收发模块是否存在。

spi配置：

void SPI_Configuration()
{
	SPI_InitTypeDef  SPI_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB1Periph_SPI2|
						   RCC_APB2Periph_GPIOA|
						   RCC_APB2Periph_GPIOB|
						   RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15|GPIO_Pin_13; //PB13-SCK PB15-MOSI 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; 
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; 
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;//PB14-MISO 
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; 
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14;//PC13-CSN PC14-CE 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; 
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; 
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_15; //PC15-IPU
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; 
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	/*  配置SPI1模块 初始化*/

   	SPI_I2S_DeInit(SPI2);                          
   	SPI_Cmd(SPI2, DISABLE); //必须先禁用,才能改变MODE
   	SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;  //两线全双工
   	SPI_InitStructure.SPI_Mode = SPI_Mode_Master;       //主
   	SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;      //8位
   	SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;        //CPOL=0 时钟悬空低
   	SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;       //CPHA=0 数据捕获第1个
   	SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;        //软件NSS
   	SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4 ; //256分频
   	SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_LSB;      //高位在前
   	SPI_InitStructure.SPI_CRCPolynomial = 7;        //CRC7
   	SPI_Init(SPI2, &SPI_InitStructure);
   	SPI_Cmd(SPI2, ENABLE);
   	//SPI_ReadWriteByte(0xff);   //启动传输
}

nrf init

//24L01片选信号
#define CE_H()   GPIO_SetBits(GPIOC, GPIO_Pin_14) 
#define CE_L()   GPIO_ResetBits(GPIOC, GPIO_Pin_14)

//SPI片选信号
#define CSN_H()  GPIO_SetBits(GPIOC, GPIO_Pin_13)
#define CSN_L()  GPIO_ResetBits(GPIOC, GPIO_Pin_13)

void  NRF24L01_Init(void)
{
   CE_L();          //使能24L01
   CSN_H();        //SPI片选取消
}

u8 SPI_ReadWriteByte(u8 data)
{ 
	u8 temp;
	printf("  Enter SPIRW%d\n  ",data); 
	while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
    /* Send SPI2 data */
    SPI_I2S_SendData(SPI2, data);
	printf("  send ok   "); 
	while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
    /* Read SPI2 received data */
    temp = SPI_I2S_ReceiveData(SPI2);
	printf("  Leave SPIRW%d\n  ",temp);      
	return temp;          //返回收到的数据
}

while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);

mian 函数相关部分

 SPI_Configuration();
  NRF24L01_Init();

  //printf("aaaUART SUCCESS!!!");Delay(0x1EFF);
  if(NRF24L01_Check()==0)
	printf("  nrf check success");
  while (1)
  {}

u8 NRF24L01_Check(void)
{
	u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5};
	u8 i;
	SPI2_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz（24L01的最大SPI时钟为10Mhz）    
	NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,buf,5);//写入5个字节的地址.
	NRF24L01_Read_Buf(TX_ADDR,buf,5); //读出写入的地址  
	for(i=0;i<5;i++)if(buf[i]!=0XA5)break;  
	if(i!=5)return 1;//检测24L01错误
	return 0; //检测到24L01
}  

 每次spi发送就会死机，求大神解答！！！