完善的串口通信vc++代码，可选择波段，串口，进行串口设置，实现异步通信-Complete serial communication vc++ Code, choose band, serial port, serial port settings to achieve asynchronous communication

能够很完善的在LINUX下进行串口编程，支持修改串口的波特率等参数，还可以设置特殊波特率，比如B2-Sound can be carried out under the LINUX serial programming, support a revision of the baud rate and other parameters of serial port, you can set a special baud rate, for