Output GGA protocol in an open environment, displaying garbled data

(1) Serial port baud rate setting error, serial port baud rate is inconsistent with the baud rate setting of the serial port debugging tool, it is necessary to keep the serial port baud rate consistent with the baud rate of the serial port debugging tool;

(2) Modify the serial port baud rate, for example, com2: cshg setcom com2 115200.