I have a problem with a device (Elvaco modules for heat meters).
We switched to Chirpstack V4 from another Lorawan server. So far everything works, join; payload decoder, but the devices send a join request after ~14 days.
Apparently the devices expect some feedback from the LNS so they know they are still connected.
In the old LNS, a downlink was sent after 65 uplink packets (only metadata) and the fCnt kept rising.
Can this also be set in the chirpstack?
I still don’t understand how encodeDownlink() works. Is there an example?
My attempts failed.