使用控件实现的串口通信程序，免于记忆API的函数-The realization of the use of the serial communication control procedures, from memory API function

串口通信编程（基于api函数）里面提供多种串口通信的功能。大家可以参考一下。-Serial communication programming (based on API functions) offers a variety of serial communication function. You can refer to it.