usb hid调试软件，能自动设备hid设备并与之建立通信，实现数据回环操作,debugging software usb hid, hid equipment to automated equipment and establish communications, data loopback operation

STM32串口实现上下行通信,RGBW四色调光(STM32 serial port to realize up and down communication, RGBW four color dimming)

STM32串口实现与上位机软件通信，上位机发数字，单片机收到后执行相应的命令(Communication between STM32 serial port and host computer software)