My app listens to application/+/device/+/up for new information from my devices. The devices look like they’re working correctly, but the data field is always blank as circled below in MQTT.
The righthand pane shows the same message in Chirpstack, but it’s not clear to me that this “Raw” data is actually data or just the frame header and frame port information as part of the frm_payload
That does not explain why the data field is empty. If a non-zero payload has been sent, it will shows as decrypted data even if no codec has been configured. Codecs are completely optional.
This post also seems to indicate it could be the “endianness” or byte order. I feel like this might not be the case though otherwise why would it work with the Multitech gateway as the network server?
You are better to upload a full screenshot of the LoRaWAN Events.
So we can know which stage your device are in.
Then we can check if you device is able to join, send uplink and you are capturing the correct packets.
Seem like you are capturing MAC command packets instead. And you device may not be able to join the network yet.
This is the LoRaWAN Events from Application > Device
