Serial0

[charles_linquist]

I am using the GPS + GSM module and I’m posting here because all the other forum responses are weeks old.

I’m using a Raspberry pi Zero and I need to use Serial0 for another application.

How do I handle this?

 

[Mark Williams]

you can stream the gps NMEA sentences through  one of USB serial interfaces .We have a guide in draft.. ill get it published in the next few days.

In summary, this is what you need to do.
Connect to the second interfaces on the GSM module;
minicom -b 115200 -o -D /dev/ttyACM1
Activate storing of last values of NMEA, from the GPS to the GSM module;

AT+UGRMC=1
AT+UGGLL=1
AT+UGGSV=1
AT+UGGGA=1

Activate the unsolicited aiding result.
AT+UGIND=1
Set NMEA data to to stream through USB interface /dev/ttyACM3
AT+UGPRF=1
Turn on GPS,  (Start GNSS with GPS+SBAS+GLONASS systems and local aiding.);
AT+UGPS=1,2,67

To view the stream
minicom -b 115200 -o -D /dev/ttyACM3

To stop GPS, use
AT+UGPS=0

We have some info here about the UGPS command which is used to turn on GPS.

This document describes these all these commands in detail.

 

I hope this is what you are after

Mark --OzzMaker.com --

[Author]

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