RE: Pairing and unBonding nrf52840 dk Central

MMH — Tue, 18 Mar 2025 02:08:47 GMT

Hi Elinar,

Thank you so much for your response it really helped! It's working now the way I want it to.

Cheers,

Mujeefa

RE: Pairing and unBonding nrf52840 dk Central

Einar Thorsrud — Fri, 14 Mar 2025 13:51:57 GMT

HI Mujeefa,

[quote user=""]1. How do I delete the old pairing information from the central side to re-pair without resetting my central device?[/quote]

You can iterate through all bonds using bt_foreach_bond() and call bt_unpair() to delete them (or just the one you want to delete if you have others. you want to keep).

You can also alow re-pairing using:

CONFIG_BT_SMP_ALLOW_UNAUTH_OVERWRITE=y
CONFIG_BT_ID_UNPAIR_MATCHING_BONDS=y

[quote user=""]2. How do I know when the bond was deleted on the peripheral device?[/quote]

You will get the security_changed callback regardless of if securing the link was successfull or not, and if it was not (for instance due to the peer not having the bondign information anymore, you will know. See and example of that here.