请使用串口调试助手（Baud 4800、数据位8、停止位1、效验位无）做为上位机来做收发试验。在调试助手字符串输入框中输入数字和字符，按发送按钮，然后观察接受窗口的变化。也可以用。

调试助手自动循环发送。-Please use the serial port debugging assistant (Baud 4800, Data bits 8, stop bit 1, bit no efficacy) as the host computer to do send and receive test. Assistant string in the debug input box numbers and characters, press the Send button, and then observe the window to accept the changes. Can also be used. Automatic cycle to send debugging assistant.