OTAA - save Keys and?

End Devices (Nodes)
1

Hi,

I use the node (MURATA) with OTAA. When I go to reset with MCU I do not want to make a activation again and again before eache transmit new data. When my node is once activated - I do not want to make a activation procedure again.

So I saved the NwkSKey and AppSkey and always after restarting my MCU I read the keys from EEPROM (LoRaMacNwkSKey and LoRaMacAppSKey). But it seems like that I have to save also some other things, because I can not transmit data to the server after restart… (although the keys stored properly!!)

Missed I something?

Thank you.

2

what node is that ? did you build it yourself or bought it.

3

See OTAA then ABP, and Turning off RN2483 resets up/down frames.

2 Likes
4

I built my own node, but it is based on MURATA LRWAN module.
Oops…It looks like I forget save the DevAdr… I will try to save it too.

Thank you

5

Just the keys plus DevAddr is still not sufficient!

6

KEys, DevAddr and frame counters?

7

Well, no. See the links I posted above.