单片机通过CH372或者CH375连接到PC机进行USB通讯的框架程序.这个程序需要硬件电路绝对正确.内部包含一个电路.如果有问题联系QT中国群218967017-MCU through CH375 CH372 or connected to a PC USB communications framework program and this program requires hardware circuit is absolutely correct. Contains an internal