基于usb 芯片net2272的一个loopback的程序,稍加修改,即可移植到你的mcu或者dsp上-Net2272 on a usb chip loopback procedure, slightly modified, can be transplanted to your mcu or dsp on
68013 I/O触发int信号。USB简单通讯实验。将中断信号和I/O接口的使用结合起来。-68013 I/O trigger int signal. USB simple communication experiments. Will break the signal and I/O interfaces used together.