How to update peripheral device BD Address after device disconnection

[mksi]

Hi

I am developing an application where I need to update the BD address for advertising after each disconnection and on reboot.
I know Zephyr stack has the API bt_id_reset() which can be used to reset the bd_address but it also clean up the stored keys and connection information.
but my requirement is to update the bd address during advertisment without resetting anything. how can I achieve it?

[Einar Thorsrud]

Hi,

The Bluetooth: Peripheral with multiple identities sample demonstrate multiple advertisiers with different addresses.

[mksi]

I want to have only one identity and change the address(application defined) each time after disconnection. is this possible?

[Einar Thorsrud]

I see, but then you are back to bt_id_reset(), are you not? If not, can you elaborate?

[mksi]

you mean I do not have other option other then bt_id_reset(), if I want have single Id.
Otherwise I have to use multiple ids if I want to change the BD address

[Einar Thorsrud]

You can advertise with only one ID but yse the sample I referred to for how to do that (you do not have to make multiple advertisers). So this seems to fit what you need as far as I can see (though you just need parts of the sample as you just want one advertiser). But if you only want a single ID and nost use the old, I don't see the problem with bt_id_reset()? (the old bonds are deleted, but they are also assosiated with the old identity and cannot be used with the new anyway, so there is no reason to keep it)