RE: Peer Manager tries to bond despite other configuration

daubsi — Fri, 16 Jul 2021 20:36:31 GMT

Hi Hung Bui,

this sounds reasonable, thanks! So it means, even if I say 'no security needed at all' the remote party can still say "But _I_ want to!"? That would explain it...

I found a pairing in the Windows setting and when i removed that one, the problem got solved.

Thank you very much!

RE: Peer Manager tries to bond despite other configuration

Hung Bui — Fri, 16 Jul 2021 15:13:02 GMT

Hi Markus,

From what I can tell, you got this issue because the central device (PC) already has a bond with the board. When the connection is established the PC (bleak python) tried to encrypt the link with a previously bonded information. Since there is no bond information on the nRF52 it reject this request, resulting what you can see in the log.
I would suggest to delete bond information on PC side and test again. I'm not sure where the bond information is stored or if there is actually bond information because I'm not very familiar with the bleak Python library.

I would suggest to use a sniffer trace to verify what happened over the air.