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[应用相关] RT-Thread基于AT32单片机的虚拟串口VCOM

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楼主| tpgf 发表于 2024-1-21 15:54 | 显示全部楼层 |阅读模式

32单片机, AD, COM, RT-Thread, Thread

1 RT-Thread配置

board.h在USB相关定义中增加

#define BSP_USING_USBDEVICE
#define BSP_USING_USBD
需要注意的是，如果不打开虚拟COM DMA发送开关，则只能发送一次，具体问题还不清楚，厂家提供的BSP中未做相关说明。

如果有编译错误，把相关文件中的RT_WEAK替换为rt_weak即可

2 测试程序
输入list device

list device
device          type       ref count
-------- -------------------- ----------
vcom    Character Device    1
usbd    USB Slave Device    0
uart4 Character Device    0
uart3 Character Device    0
uart1 Character Device    2
pin    Pin Device          0
int main(void)
{
int count;

char buf2[128];
rt_device_t dev = RT_NULL;
dev = rt_device_find("vcom");

if (dev)
      rt_device_open(dev, RT_DEVICE_FLAG_RDWR);
else
      return -RT_ERROR;

while (1)
{
      count = rt_device_read(dev, 0, buf2, 128);
      if(count>0){
         buf2[count] = 0;
         rt_kprintf("%s\n",buf2);
         rt_device_write(dev, 0, buf2, count);
      }
      rt_thread_mdelay(1);
}

return RT_EOK;
}