问题
I am using a ublox GPS for a data acquisition application. The device is outputting NMEA on a virtual COM port.
The NMEA output works just fine. But between the NMEA messages strange characters are interspersed. See screenshot below from Realterm with setting "Ascii".
Can somebody tell me what this is? And ideally what commands I would need to send to the device to disable this output?
回答1:
You should disable the UBX binary protocol. The NMEA and UBX messages are interleaved on the same port. This can be done by sending UBX-CFG-PRT message disabling the UBX output protocol on your port. You can use the handy u-center application avaiable from u-blox website to perfrom this task. An alternative is to reflash the device or remove the backup battery. It should default back to NMEA only.
来源：https://stackoverflow.com/questions/55831738/ublox-gps-strange-characters-interspersed-with-nmea-output