Smallest amount of advertising time?

RE: Smallest amount of advertising time?

Elm — Thu, 07 Jan 2016 08:29:24 GMT

I consider my original question out of date, but this is the best answer I got. Elm

RE: Smallest amount of advertising time?

Elm — Thu, 07 Jan 2016 08:26:48 GMT

Unfortunately, this does not help. I cannot see what kid of radio activity (transmit or receive) created the event. Elm

RE: Smallest amount of advertising time?

Petter Myhre — Wed, 11 Nov 2015 14:51:23 GMT

The conclusion of the question you linked to is not that you cannot scan and advertise at the same time. It is that you can't start to advertise if you are scanning, but you can start to scan if you are advertising. The workaround was to stop scanning, then start advertising, then start scanning again.

However, I believed this bug is fixed in S130 v1.0.0, and the version they were talking about was 0.5.0.

Anyways, the best solution to your question is the one shibshab has given you, but a timer would also probably work, since advertising would start quickly as long as you are not doing anything else, like scanning.

You will not get an event every time there is an advertising event. You will get an advertising timeout event, as you already know.

RE: Smallest amount of advertising time?

shibshab — Wed, 11 Nov 2015 14:33:59 GMT

You can use the radio notifications in order to get notified once the radio has gone from disabled to enabled back to disabled state. The SDK module "ble_radio_notifications.c" provides simplified functionality for this.

static void my_radio_event_handler(bool radio_active) { ... }

...
    err_code = ble_radio_notification_init(NRF_APP_PRIORITY_HIGH,
                                       NRF_RADIO_NOTIFICATION_DISTANCE_800US,
                                       my_radio_event_handler);

This will then register a callback to my_radio_event_handler when the radio changes state (active/not active).