这个是串口通信的，基于停止等待协议编写源程序，欢迎指教-this serial communication is based, stop source for the preparation of the agreement, welcomed the exhibitions

这个是串口的基于停止等待协议原理编程，这个是接收程序，很好用哦-this is the agreement on principle to stop waiting for the program, this is the receiving process, oh well spent