NMEA GPS data into Cerbo/VRM via Network?

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I have a GPS unit capable of sending NMEA GPS data over IP (not the custom NMEA bus) to wherever. It is quite configurable, allowing changes to the format, etc.

Is it possible to have this ingested by the Cerbo GX on my network?

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Maybe I’ll scan the open ports on the GX and see if I get lucky…

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This post seems like the simplest approach, if I can figure out how to get root access:

https://www.reddit.com/r/Victron/comments/1dq4c9d/cerbo_gx_gps_module_with_sma_external_antenna/

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https://www.victronenergy.com/live/ccgx:root_access

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I configured my router to send NMEA strings to the Cerbo’s IP on port 5555 every 3 seconds and created this /data/rc.local file:

#!/bin/bash

# Setup UDP socket GPS
/usr/bin/socat UDP4-RECV:5555 pty,link=/dev/ttyRUTX,raw,nonblock,echo=0,b115200 2>> /data/socat.log &

sleep 2 # give time for data

/opt/victronenergy/gps-dbus/gps_dbus -s /dev/ttyRUTX -b 115200 -t 0 &

This seems to have worked.

If anyone knows more about which NMEA strings are useful and what frequency is required, please let me know.

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