stm32f207怎么初始化硬件SPI

1. void SPI_Configuration(void)
   {
   	SPI_InitTypeDef SPI_InitStruct;	 
   	GPIO_InitTypeDef GPIO_InitStructure;
   	
   	RCC_AHB1PeriphClockCmd(Open207Z_SPIx_SCK_GPIO_CLK | Open207Z_SPIx_MISO_GPIO_CLK | Open207Z_SPIx_MOSI_GPIO_CLK,ENABLE);
   	#ifdef OpenSPI1
   		RCC_APB2PeriphClockCmd(Open207Z_SPIx_CLK,ENABLE);
   	#else
   		RCC_APB1PeriphClockCmd(Open207Z_SPIx_CLK,ENABLE);
   	#endif
   	
   	GPIO_PinAFConfig(Open207Z_SPIx_SCK_GPIO_PORT, Open207Z_SPIx_SCK_SOURCE,  Open207Z_SPIx_SCK_AF);
   	GPIO_PinAFConfig(Open207Z_SPIx_MISO_GPIO_PORT, Open207Z_SPIx_MISO_SOURCE, Open207Z_SPIx_MISO_AF);
   	GPIO_PinAFConfig(Open207Z_SPIx_MOSI_GPIO_PORT, Open207Z_SPIx_MOSI_SOURCE, Open207Z_SPIx_MOSI_AF);
   	
   	GPIO_InitStructure.GPIO_Pin = Open207Z_SPIx_SCK_PIN;
   	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
   	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
   	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
   	GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;  
   	GPIO_Init(Open207Z_SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
   
   	GPIO_InitStructure.GPIO_Pin = Open207Z_SPIx_MISO_PIN;
   	GPIO_Init(Open207Z_SPIx_MISO_GPIO_PORT, &GPIO_InitStructure);
   
   	GPIO_InitStructure.GPIO_Pin = Open207Z_SPIx_MOSI_PIN;
   	GPIO_Init(Open207Z_SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
   
   	SPI_I2S_DeInit(Open207Z_SPIx);
   	SPI_InitStruct.SPI_Direction= SPI_Direction_2Lines_FullDuplex;
   	SPI_InitStruct.SPI_DataSize = SPI_DataSize_8b; 
   	SPI_InitStruct.SPI_Mode = SPI_Mode_Master;
   	SPI_InitStruct.SPI_CPOL = SPI_CPOL_Low ;
   	SPI_InitStruct.SPI_CPHA = SPI_CPHA_1Edge;
   	SPI_InitStruct.SPI_NSS = SPI_NSS_Soft ;
   	SPI_InitStruct.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_128;
   	SPI_InitStruct.SPI_FirstBit = SPI_FirstBit_MSB;
   	SPI_InitStruct.SPI_CRCPolynomial = 7;
   	SPI_Init(Open207Z_SPIx, &SPI_InitStruct);
   
   	SPI_Cmd(Open207Z_SPIx, ENABLE);
   
   }
   
   void SPIx_Send_byte(u16 data)
   {
   	while(SPI_I2S_GetFlagStatus(Open207Z_SPIx, SPI_I2S_FLAG_TXE)==RESET);
   	SPI_I2S_SendData(Open207Z_SPIx,data);
   
   	while(SPI_I2S_GetFlagStatus(Open207Z_SPIx, SPI_I2S_FLAG_RXNE)==RESET);
   	SPI_I2S_ReceiveData(Open207Z_SPIx);
   }
   
   u16 SPIx_Receive_byte(void)
   {
   	while(SPI_I2S_GetFlagStatus(Open207Z_SPIx, SPI_I2S_FLAG_TXE)==RESET);
   	SPI_I2S_SendData(Open207Z_SPIx,0x00);
   	
   	while(SPI_I2S_GetFlagStatus(Open207Z_SPIx, SPI_I2S_FLAG_RXNE)==RESET);
   	return SPI_I2S_ReceiveData(Open207Z_SPIx);
   }

代码初始化完成后spi的IO口上没有波形输出

大神请指教