一个非常全面usb例子，帮了我很大的忙。这次奉献出来，感谢有这么好的网站提供这么好的机会！-Usb a very comprehensive example, helped me a lot of busy. The dedication out, grateful for such a good site to provide such a good chance!

C8051F34X的USB驱动程序，以及其应用程序，非常完整。-C8051F34X the USB driver, as well as their applications are complete.

c8051f320 USB应用源码 c8051f320关于USB的应用 其中包含三个源代码-c8051f320 USB application source code