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Understanding LoRa inside out

Hello,
I really want to learn and understand LoRa from the basic level. How it works. The big plan is to develop my own applications.
I have a Raspberry Pi with a LoRa concentrator board LRWCC8-MPCIE.
I have the serial communication up and can get AppEui with Utilities available.
From what I learned communication is based on AT commands.
From time to time some numbers are coming through /dev/serial0.
But just numbers without +RCV or sth similar.
But there is no response on AT or other AT commands.
What am I doing wrong or where is my failure in thinking?
Thanks
bye
Michael.

Hello @mwuest,

Can you please let me know the tool you are using to get the AppEui?

Actually, this is not based on AT commands. As explained on the manufacturer website (https://www.n-fuse.co/devices/LoRaWAN-Concentrator-Card-mini-PCIe.html), there are several tools to drive this card:

All the information are available in the dedicated repositories.

Well. At that time is was a bit mixing up App/DevEUI. Of course with tools and so on there is a DevEUI for the LoRaWAN Semtech Concentrator…

Bye
Michael.