After following the instructions provided here my gateway was operational.
However, upon checking /var/config/lora/local_config.json I noticed
"gps": false, is switching the GPS off.
The log file (
Whilst this doesn’t cause any issues with packet forwarding, it will affect the availability of accurate time which is required to calculate Time Difference of Arrival (TDoA) which delivers end-node location information in conjunction with a v2.1 LoRa Network Server (see this thread)
Hidden in the same thread is the required change in
After restarting the device the log file (/var/log/lora-pkt-fwd.log) should show:
#Valid gps time reference (age: 1 sec)
whilst this enables the GPS, the gateway will not show on ttnmapper.
I will update this post when I find a solution.
gateway would not show on ttnmapper, I changed the gateway to fake GPS with fixed coordinates, rebooted and it immediately appeared on TTN mapper. Then changed the gateway back to use real GPS and is stayed on TTN mapper. About 20hrs later, still running on real GPS and it’s still visible on TTN mapper.
commissioned a new gateway today, not showing on ttnmapper, switched GPS from off to fake to on, multiple times, but can’t make the gateway appear on the mapper. So what I’ve seen with the other gateway was a fluke.