注意：你需要在执行程序前使用软件将使用的串口修改为9600，然后才可以执行程序
选择1 修改串口2：$PQTMCFGUART,W,2,9600*0E
选择2 修改串口3：$PQTMCFGUART,W,3,9600*0F




Note: Before executing the program, you need to use the software to change the serial port to 9600, and then you can run the program
Select 1 to modify serial port 2: $PQTMCFGUART,W,2,9600*0E
Select 2 to modify serial port 3: $PQTMCFGUART,W,3,9600*0F