Radio Notification Context

RE: Radio Notification Context

LukasKl — Thu, 16 Jul 2020 13:02:40 GMT

Hey,

after trying a bit around I decided to just stop the scanner for some short time and then send the advertisement which gives me the possibility to use the radio notifications.

Thanks for your help

RE: Radio Notification Context

Jared — Fri, 10 Jul 2020 12:44:46 GMT

Hi,

Oh well, I see.. The thing with using radio notifications is that it's totally agnostic over what happens on the higher layer, it only cares if the radio is Active or not. There isn't a specific event that is generated when the nRF are advertising. You can always do this indirectly by setting a flag once you've started advertising in the application, but it won't necessarily be precise as the Softdevice has to schedule the task i.e put in the queue and execute it. But it will in most cases work fine 🙂

regards

Jared

RE: Radio Notification Context

LukasKl — Fri, 10 Jul 2020 11:38:58 GMT

Hey,

After reading the post you sent me I think there was a misunderstanding. I would like to get an interrupt when sending an advertisement, not when sending a notification. I've mistaken the two terms, sorry for that.

So the actual question I had was if I can get an interrupt after an advertisement. And I could already do this with

ble_radio_notification_init(2, NRF_RADIO_NOTIFICATION_DISTANCE_2680US, interrupt_fun);

But this interrupt also fires when doing a scan. So is there a way to only do this after advertising and not when performing a scan?

Sorry for my mistake.

RE: Radio Notification Context

Jared — Fri, 10 Jul 2020 07:24:50 GMT

Hi,

See step 3 in our BLE characteristics tutorial.

regards

Jared

RE: Radio Notification Context

LukasKl — Thu, 09 Jul 2020 11:54:31 GMT

Sorry I do not get what you mean by "enable notifcations". Could you please elaborate?

Edit: If i understand correctly you mean

ble_radio_notification_init(2, NRF_RADIO_NOTIFICATION_DISTANCE_2680US, NULL);

which I did indeed initialize.

RE: Radio Notification Context

Jared — Thu, 09 Jul 2020 11:35:05 GMT

Did you enable notifications first?

RE: Radio Notification Context

LukasKl — Thu, 09 Jul 2020 09:16:56 GMT

Hey,

Thanks for your help. Since I know it should work for S132 I tried but could not make it work.

I initialize the following modules

void init(void)
	nrf_pwr_mgmt_init();
	ble_stack_init();
	gap_params_init();
	nrf_ble_gatt_init(&m_gatt, NULL);
	advertising_init();
	scan_init();
}

The ble_evt_handler looks as follows

void ble_evt_handler(ble_evt_t const* p_ble_evt, void* p_context)
{
	NRF_LOG_INFO("%d", p_ble_evt->header.evt_id);
	NRF_LOG_PROCESS();
}

When I run it I can see the advertisements are sent using my phone, also I get only 29 in the logs which corresponds to the scan report. Unfortunately I do not get any other evt_ids in the handler, e.g. BLE_GATTS_EVT_HVN_TX_COMPLETE does not appear.

I was trying to follow the example: ble_peripheral/experimental/ble_app_hids_keyboard_pairing_nfc, where BLE_GATTS_EVT_HVN_TX_COMPLETE is used.

best regards,

Lukas

RE: Radio Notification Context

Jared — Wed, 08 Jul 2020 07:05:53 GMT

Well, it should still work for S132.

RE: Radio Notification Context

LukasKl — Tue, 07 Jul 2020 15:26:01 GMT

Hey,

Thank you for your response.

unfortunately I'm using S132, since I use it as central and peripheral. Is there a way to make it work with S132?

best regards,

Lukas

RE: Radio Notification Context

Jared — Tue, 07 Jul 2020 12:48:48 GMT

Hi.

The function that you're referring to is apart of the radio notifications API, which will notify the application every time the radio is in use. The S112 softdevice will produce a BLE_GATTS_EVT_HVN_TX_COMPLETE event every time a BLE notification is sent. You can implement the event in the switch case in the gatt handler in your project.

best regards

Jared