Check Data Accumulation
Command
AT+APK?
Response
+APK: <lora_app_key>
Description
Check what the LoRa application key is for this motherboard. If the key has not been set before, this might return either an empty string or just plain nonsense. Use this command only to verify what the key is, if it has been set before.
Example
Command> AT+APK?
Response> +APK: FFFFAAFF11EE22DD33CC447600005555
The motherboard will use FFFFAAFF11EE22DD33CC447600005555
as LoRa application key. This key is used during the over-the-air activation (OTAA) network join procedure.