NCS BLE scanning module: Can’t switch between “scan without connect” to “scan with connect”

RE: NCS BLE scanning module: Can’t switch between “scan without connect” to “scan with connect”

variant — Sun, 18 Jun 2023 15:14:38 GMT

It turns out that the quick and dirty fix of just calling bt_le_scan_cb_unregister(&scan_cb) in bt_scan_init() won't suffice for my needs.

So I am now doing what I think is the correct fix of creating an API to change bt_scan.connect_if_match:

#if CONFIG_BT_CENTRAL
void bt_scan_update_connect_if_match(bool new_connect_if_match)
{
	bt_scan.connect_if_match = new_connect_if_match;
}
#endif /* CONFIG_BT_CENTRAL */

This method is analogous to the existing method to update initial connection parameters: bt_scan_update_connect_if_match().

RE: NCS BLE scanning module: Can’t switch between “scan without connect” to “scan with connect”

Einar Thorsrud — Tue, 13 Jun 2023 06:58:59 GMT

It is a sensible feature request, so we will try to get it in, but I cannot guarantee anything about future releases, unfortunately.

RE: NCS BLE scanning module: Can’t switch between “scan without connect” to “scan with connect”

variant — Tue, 13 Jun 2023 02:44:40 GMT

Thanks Einar.

I take it we would have to just look at NCS updates to see if the "feature" is added? And, it might never be added?

RE: NCS BLE scanning module: Can’t switch between “scan without connect” to “scan with connect”

Einar Thorsrud — Mon, 12 Jun 2023 14:17:27 GMT

Hi,

Thank you for reporting this issue. As you have found, this is currently not supported out of the box. I have forwarded it as a feature request to the responsible team, but for now you either have to modify the NCS code as you do, or for instance always scan without connecting using the scan module, and then handle the connection in the application.