One of my LoRa modules stopped working recently. While debugging the problem via the AT interface, I found that the module had forgotten all of its settings:
AT$NWKSKEY?
$NWKSKEY:
OK
AT$APPSKEY?
$APPSKEY:
OK
AT$DEVEUI?
$DEVEUI:
OK
So, I tried to restore the settings and in the AT command interface it looked like that might have worked:
AT$DEVADDR=26015936
OK
AT$DEVADDR?
$DEVADDR: 26015936
OK
However, upon resetting the device, all the settings are gone again:
AT$DEVEUI?
$DEVEUI:
OK
Has anybody seen this before? Any idea what could be causing the problem? Thank you.
-Jan