Scan request as an event to application layer with Zephyr

RE: Scan request as an event to application layer with Zephyr

Sigurd — Fri, 01 Sep 2023 08:00:55 GMT

-22 is the same as EINVAL(Invalid argument). Looking quickly at bt_le_ext_adv_set_data(), and function call this function calls(e.g. le_adv_update), this error might occur if you are e.g. trying to set the device name in both advertising data and scan response data.

RE: Scan request as an event to application layer with Zephyr

Maulik — Fri, 01 Sep 2023 07:39:45 GMT

Hi Siguard,

Thank you for answering on behalf on Einar and your help.
Now I am getting that callback once scan response data is sent. But the problem is when I add scan response data in bt_le_ext_adv_set_data, It gives me an error showing "Failed to set extended advertising (err -22)".
And If I pass NULL to 4th and 5th position in bt_le_ext_adv_set_data, still I got some scan response data even if I didn't set it.

RE: Scan request as an event to application layer with Zephyr

Sigurd — Wed, 30 Aug 2023 12:42:50 GMT

Hi,

Einar is out of office, so I'm replying instead.

Take a look at the code in this post: Fragmented advertising in legacy mode (BLE 4.2)

i.e. the on_scanned() function, the struct bt_le_ext_adv_cb cb, and BT_LE_ADV_OPT_NOTIFY_SCAN_REQ usage in adv param

RE: Scan request as an event to application layer with Zephyr

Maulik — Fri, 25 Aug 2023 09:39:02 GMT

Yes. it is. Now how can I execute my custom function using function you mentioned.

Best regards,
Maulik

RE: Scan request as an event to application layer with Zephyr

Einarh — Fri, 18 Aug 2023 12:23:42 GMT

So you're able to build with BT_CTLR_SCAN_REQ_NOTIFY activated?

In that case le_scan_req_received() should be activated:

https://github.com/zephyrproject-rtos/zephyr/blob/main/subsys/bluetooth/controller/hci/hci.c#L7805

Is it?

RE: Scan request as an event to application layer with Zephyr

Maulik — Thu, 17 Aug 2023 13:41:33 GMT

Hi Einar.

Yes. Now I am not getting any warning as before. Thank you for your guidance.
Can you please answer me first 2 questions?

Best regards
Maulik

RE: Scan request as an event to application layer with Zephyr

Einarh — Thu, 17 Aug 2023 13:28:06 GMT

What about the configs listed as its dependencies, can you confirm whether those are set?

RE: Scan request as an event to application layer with Zephyr

Maulik — Thu, 17 Aug 2023 12:38:07 GMT

I set these dependencies in prj.conf file. I had already done that and then I got the warning that I showed you earlier.

RE: Scan request as an event to application layer with Zephyr

Einarh — Thu, 17 Aug 2023 12:33:15 GMT

What do you mean?

In what file are you setting these dependencies?

RE: Scan request as an event to application layer with Zephyr

Maulik — Thu, 17 Aug 2023 11:30:42 GMT

Yes, I had already set all dependencies.
And also after build, when I look for BT_CTLR_SCAN_REQ_NOTIFY in .config file, I can't see this parameter.
I think that happens because of during compilation it doesn't get changed to y from n. Right?

Best Regards
Maulik

RE: Scan request as an event to application layer with Zephyr

Einarh — Thu, 17 Aug 2023 11:09:04 GMT

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/index.html#CONFIG_BT_CTLR_SCAN_REQ_NOTIFY

Have you set the dependencies from here before setting this config?

-Einar

RE: Scan request as an event to application layer with Zephyr

Maulik — Thu, 17 Aug 2023 08:57:06 GMT

Hello Einar

Thank you for your reply. Small mistake from my side is wrong choice of word. It is showing warning not compilation error.
Here Please have a look.

Thanks and Best Regards
Maulik

RE: Scan request as an event to application layer with Zephyr

Einarh — Thu, 17 Aug 2023 08:40:40 GMT

Hello

[quote user=""]According to Zephyr documentation Several CONFIG parameters like, BT_HCI, BT, BT_CTLR, BT_CTLR_ADV_EXT and BT_CTLR_SCAN_REQ_NOTIFY must be set in prj.conf to receive notifications on a scan request. I have done that, but I still get compilation error for these parameters.[/quote]

Could you please share your compilation errors?

Best regards,

Einar