Connectable, non-scannable advertisements

[bart]

Hi, I was wondering if there is any way to advertise connectable, but non-scannable advertisements.

My device does not have a scan response, but I still see a lot of scan requests, that result in a scan response with no data. It seems quite a wast of radio time for both the scanning and the advertising device.

Right now, the device advertises with BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED, but I see no option for connectable + nonscannable + undirected.

An option could be BLE_GAP_ADV_TYPE_EXTENDED_CONNECTABLE_NONSCANNABLE_UNDIRECTED, but i'm not sure if that requires BLE version 5+.

I'm using NRF5 SDK 17.1 with S132 on an nRF52832.

[Karl Ylvisaker]

Hello,

Right now, the device advertises with BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED, but I see no option for connectable + nonscannable + undirected.

There is unfortunately no such type, with connectable, unscannable and undirected advertising.
You could use any of the specified advertising types. In your case, could it be an option to use the connectable, unscannable, directed advertising type?

An option could be BLE_GAP_ADV_TYPE_EXTENDED_CONNECTABLE_NONSCANNABLE_UNDIRECTED, but i'm not sure if that requires BLE version 5+.

Extended advertising is indeed a BLE 5 feature, you can read more about it in this blogpost.

Best regards,
Karl