1、STM32CubeMX工程设置

管脚定义

硬件SPI 参数设置

2、软件编写

//TMC5160 takes 40 bit data: 8 address and 32 data
void sendData(unsigned long address,long datagram)
{
	unsigned char i;
	cmd[0]=address;
	cmd[1]=(datagram >> 24) & 0xff;
	cmd[2]=(datagram >> 16) & 0xff;
	cmd[3]=(datagram >> 8) & 0xff;
	cmd[4]=datagram & 0xff;
	
	HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_RESET); 		//SPI_CS片选拉低	
//	SPI_SendByte(address);
//	SPI_SendByte((datagram >> 24) & 0xff);
//	SPI_SendByte((datagram >> 16) & 0xff);
//	SPI_SendByte((datagram >> 8) & 0xff);
//	SPI_SendByte(datagram & 0xff);
	for(i=0;i<5;i++)
	{
		if(HAL_SPI_Transmit(&hspi1,&cmd[i],1,100) == HAL_OK)
		{
		}
		else;
	}	
	HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_SET);  	//SPI_CS片选拉高
}

unsigned long ReadData(long address)
{
	char data[4] = {0, 0, 0, 0};
	unsigned long datagram = 0;
	
	HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_RESET); 	//SPI_CS片选拉低
	
	SPI_SendByte(address);
	data[0] = SPI_ReceiveByte();//SPI_ReceiveByte((datagram >> 24) & 0xff);
	data[1] = SPI_ReceiveByte();//SPI_ReceiveByte((datagram >> 16) & 0xff);
	data[2] = SPI_ReceiveByte();//SPI_ReceiveByte((datagram >> 8) & 0xff);
	data[3] = SPI_ReceiveByte();//SPI_ReceiveByte(datagram & 0xff);	
	HAL_GPIO_WritePin(SPI1_CS_GPIO_Port, SPI1_CS_Pin, GPIO_PIN_SET); 	//SPI_CS片选拉高
	
	datagram = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3];	
	return datagram;
}