这是串口调试助手低版本的编程源码，可以在这个基础上进行修改，以满足自己的应用-This is a low version of the serial debugging assistant programming source code, on this basis can be modified to suit your application

适用于Qt低版本的串口接收和发送，C++代码，直接调用即可(Suitable for Qt low version of the serial port to receive and send, C++ code, you can call directly)