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.

IAR STM32f103 simple USB HID project whih real time counter