这个程序是本人对周立功的ARM 2200实验板开发的USB固件程序的第一部分，已能实现对USB的枚举，PC能识别USB设备了！其余的功能各位可以自行增加！-this procedure is my right, who ARM Week 2200 Experimental board USB firmware development process to the first part, has been able to achieve USB enumeration, the PC can re

STM32F107开发板usb从设备驱动程序及其实验，开发环境keil for arm-STM32F107 development board and the usb device driver from the experiment, the development environment keil for arm