[BUG] Fail to connect on coded PHY if CONFIG_BT_CTLR_PRIVACY=n

RE: [BUG] Fail to connect on coded PHY if CONFIG_BT_CTLR_PRIVACY=n

Menon — Wed, 20 Jul 2022 12:29:10 GMT

Hello Nick,

I have reported it internally. Can you provide me more information on why CONFIG_BT_CTLR_PRIVACY is disabled?

Kind Regards,

Abhijith

RE: [BUG] Fail to connect on coded PHY if CONFIG_BT_CTLR_PRIVACY=n

spredn2 — Tue, 19 Jul 2022 15:11:23 GMT

Hi Abhijith,

I'm using v2.0.0.

Best Regards,

Nick

RE: [BUG] Fail to connect on coded PHY if CONFIG_BT_CTLR_PRIVACY=n

Menon — Tue, 19 Jul 2022 11:34:41 GMT

Hello Nick,

Thank you for letting me know about this. It seems you have a point.

Please share the SDK version you are using So that I can report it internally.

Kind Regards,

Abhijith

RE: [BUG] Fail to connect on coded PHY if CONFIG_BT_CTLR_PRIVACY=n

spredn2 — Fri, 15 Jul 2022 15:56:32 GMT

Hi Abhijith,

The original call that the application makes is to bt_conn_le_create. If we are trying to connect to a device that is only advertising on the coded PHY, we would set our create parameters to only scan on the coded PHY as seen below:

In bt_conn_le_create, if CONFIG_BT_SMP is enabled but CONFIG_BT_CTLR_PRIVACY isn't (bt_dev.le.rl_size == 0), the state will be set to BT_CONN_CONNECTING_SCAN and bt_le_scan_update will be called.

Since the state was changed to BT_CONN_CONNECTING_SCAN, start_passive_scan will get called. The problem with this is that we'll never get an advertisement from the device we are trying to connect to since start_passive_scan only scans on the 1M PHY, and therefore we will timeout while waiting for an advertisement from the device that is only advertising on the coded PHY.

RE: [BUG] Fail to connect on coded PHY if CONFIG_BT_CTLR_PRIVACY=n

Menon — Fri, 15 Jul 2022 13:12:10 GMT

Hello Nick,

Sorry for the long response time we are less in numbers due to summer vacation.

Can you give me more idea why this passive_scanning should start coded PHY scanning because if its a bug I need to ask it internally. I wanted to know whether you got mixed up with extended advertising and coded PHY because the screenshot doesn't say anything on coded PHY.

Kind Regards,

Abhijith