BlueNRG2 - Bonded device list empty

[alessandro morniroli]

Hi all,

I'm using for evaluating purpose two NucleoL4 boards w/ X-NUCLEO-BNRG2A1:

• the first one is running the standard firmware working w/ BlueNRG GUI 4.2.0 (v1.2e - DTM SPI v3.3.0). I setup this board as peripheral;
• the seconds one is running NimBLE stack on the NucleoL4 and DTM SPI basic firmware compiled w/ LL_ONLY option (in order to use HCI commands).

Everything is working as expected: NimBLE is able to scan the peripheral / connect to it / execute pairing.

The problem is that after bonding succeed, if I check bonded devices list (on the board running the peripheral role), this is always empty, as shown in the image.

 

As result, if I try to reconnect w/ LTK key just exchanged I got pairing error due to encryption failed.

Am I missing something? Similar question was already asked but no answer to the problem

https://community.st.com/s/question/0D50X00009XkWrdSAF/bonding-problem

Thanks for the support.

Alessandro Morniroli

[alessandro morniroli]

Hi,

an update about the problem: the function ""smp_add_pairing_record_to_bonding_database" is correctly called, as shown in the image, but when calling "get_bonded_devices" the list is always empty.

 

Any suggestions?

Alessandro Morniroli

[alessandro morniroli · Accepted solution]

Resolved:

In the NimBLE board, I was setting initiator dist key flag. Still have to understand the full meaning of it, but clearing it resolves the problem.

The question can be closed.

Alessandro Morniroli