Sample LoRaWAN code for HELTEC WiFi LoRa V2 and V3 boards using PlatformIO.
After power on or hard reset (not after recovering from deep sleep) the board prints out on the serial line:
LoRaWAN_APP Jan 15 2025 09:13:01
HELTEC_BOARD=30
AppConfig loaded.
Magic: 19660304
Sleeptime: 60000ms
AppEUI: 0102030405060708
DevEUI: 0102030405060708
AppKey: 01020304050607080102030405060708
AppEUI, DevEUI, and AppKey will be randomly generated and permanently stored in the NVS Memory. Under normal circumstances, they will never change.