关于USB驱动编写的代码，内容包含USB芯片，电路图，下位机代码和驱动代码以及用户程序代码。（第五部分）-Code written on the USB drive, includes USB chip, circuit, lower computer code and driver code and user code. (Part V)

Source code for USB driver for Atml microcontrollers. V-USB firmware, to be included in your project. Most examples also depend on libusb.