单片机串口通信实例 可以打开下面的网址，查看慧净品牌单片机学习板、实验板、开发板使用流程 http://www.hlmcu.com/HL/HJ/5.htm-The single-chip serial communication instance can open the following URL, View Huijing brand MCU learning board, experimental board, development board using the process