How to change the advertise status from fast mode to idle mode

RE: How to change the advertise status from fast mode to idle mode

Hung Bui — Wed, 08 Dec 2021 08:36:39 GMT

Hei Shuto,
You can download the Bluetooth specification v5.2 here. (Click on 5.2 link)
It's the softdevice that stops the advertising. It follows the spec.

RE: How to change the advertise status from fast mode to idle mode

Shuto Kimura — Wed, 08 Dec 2021 00:25:52 GMT

Hi, Hung Bui,

thank you for your answer.
That is the answer I am looking for.
Is it the softdevice, not the SDK, that automatically stops advertising?
Also, could you please tell me the URL of Bluetooth Spec (v5.2) at section 9.2 Part C Vol 3?

thank you

shuto

RE: How to change the advertise status from fast mode to idle mode

Hung Bui — Tue, 07 Dec 2021 13:20:18 GMT

Hi Shuto Kimura,

I am sorry that our documentation didn't make it clear that when the peripheral get connected it will automatically stopped advertising. This is described in the Bluetooth Spec (v5.2) at section 9.2 Part C Vol 3:

So the advertising process is stopped automatically when the connection is established. If you want to continue advertising you would need to start advertising again. You can have a look at the experimental\ble_app_multiperipheral example.

The same with when the connection is terminated, the softdevice won't start advertising automatically. You would need to start advertising from the code. In our ble_advertising.c it's handled in on_disconnected() event.