一个USB—HID程序，运行环境为STM32F103，下载进去运行之后，可以在PC端用bushound进行数据收发测试。-a project of usb hid,it runs on the chip STM32F103,after downloading the program into the chip,on the pc end we can using bushound to test the sending and receiving data.

使用C8051F321实现usb接口的虚拟串口。程序和bushound可能有点冲突。-C8051F321 achieved using virtual serial port usb interface. Procedures and bushound may be a bit of conflict.