用从c++编写的串口通信程序，内有详细的了解并设置串口参数的源码，并含通信原理

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用从c++编写的串口通信程序，内有详细的了解并设置串口参数的源码，并含通信原理-prepared from the use of serial communication program, with detailed understanding of serial port parameters and set up the source code, and communication with Principle