本人自写的精简易懂实用的API串口通信。把createfile,readfile writefile终于搞明白了。-it is one communication example on serial port by using windows API function.it is written by myself,so you can understand the communication process easily.

封装了windows操作串口的几个API（CreateFile， ReadFile，WriteFile，SetComState）。串口的读写设置这几个操作都可以简单地只用关键一两个参数就能实现操作。也是一个很好的例子，我写这个之前查了不少资料，感觉非常麻烦，索性发出来给新手们作个样例-Windows serial COM port access class，it includes CreateFile, SetComState，ReadFile，WriteFile，CloseFile

主要是串口的打开关闭，发送接收数据。 用的系统的api WriteFile和ReadFile。和下位机通信必备哦。-Mainly opening and closing of the serial port to send and receive data.