LPN Friendship Communication

RE: LPN Friendship Communication

Maria Gilje — Thu, 17 Sep 2026 11:13:40 GMT

After looking into this a bit closer, I realise that we should do some more investigations about your system.

What are the configurations for Nodes A and B? I'm thinking specifically about the friend timeout value. You could i.e. send your generated .config files for the two nodes with the Insert->Code option in a reply.

Do you know why the LPN loses its friendship with Node A? Knowing why the friendship is lost from the LPN's perspective should shed some light on how to modify the nodes to keep friendships more reliably.

Do you have control over the FW on both nodes?

Are both nodes running on Nordic HW?

Best regards,

Maria

RE: LPN Friendship Communication

Maria Gilje — Mon, 14 Sep 2026 13:07:09 GMT

Hello,

I just got started on this late today, so I don't have a full answer for you. However, my initial findings show that there is a way to send a new friend request on friendship loss.

I'll try to find the specific method tomorrow, but here are some reference code and documentation in the mean time:

https://github.com/nrfconnect/sdk-zephyr/blob/ncs-v3.3.4/subsys/bluetooth/mesh/lpn.c

https://nrfconnectdocs.nordicsemi.com/ncs/latest/zephyr/doxygen/html/group__bt__mesh.html

Best regards,

Maria

RE: LPN Friendship Communication

Shahin97 — Fri, 11 Sep 2026 13:41:29 GMT

This is on NCS v3.3.4