SPI使用，发发送数据抓波形没有变化

发布于 2024-11-05 21:19:19 浏览：19 订阅该版

请教，安装教程使用SPI发送数据给设备，抓波形没有变化，配置如下

![1.png](https://oss-club.rt-thread.org/uploads/20241105/40f9556041784a22e1df5ccf563c8423.png.webp)
![2.png](https://oss-club.rt-thread.org/uploads/20241105/7900cc62760611106a24d9377677b677.png)
![3.png](https://oss-club.rt-thread.org/uploads/20241105/8f88d782f97e70136a87bfa103f9b10a.png.webp)

测试代码如下发送数据抓波形没有变化

```c
#include "bsp_spi.h"

#define SPI_BUS_NAME 		"spi1"     					//spi1总线
#define SPI_DEV_NAME 		"spi10"        			//总线上的设备名，0号设备
struct rt_spi_device *spi_device;

int spi_dev_init(void)
{
	rt_err_t ret;
	
	MX_SPI1_Init();

ret = rt_hw_spi_device_attach(SPI_BUS_NAME, SPI_DEV_NAME, LE1_PIN);
	if(ret != RT_EOK)
	{
		 rt_kprintf("Failed to attach spi device!\n");
	}
	
	//查找设备
	spi_device = (struct rt_spi_device *)rt_device_find(SPI_DEV_NAME);
	if(spi_device ==RT_NULL)
	{
		rt_kprintf("Failed to find SPI device! \n");
	}
	
	// 配置SPI参数
	struct rt_spi_configuration cfg;
	cfg.data_width = 8;
	cfg.mode = RT_SPI_MASTER | RT_SPI_MODE_0 | RT_SPI_MSB;  // 模式0，MSB优先
	cfg.max_hz = 9000000;  
	
	ret = rt_spi_configure(spi_device, &cfg);
	if(ret != RT_EOK)
	{
			rt_kprintf("Failed to configure SPI device!\n");
			return ret;
	}
	
	return RT_EOK;
}
INIT_COMPONENT_EXPORT(spi_dev_init);

void spi_dev_send_data(void)
{
	uint8_t buff[2] = {0x10,0x12};
	rt_spi_send(spi_device,buff,2);
}
MSH_CMD_EXPORT(spi_dev_send_data,test);
```