Radio Notification

RE: Radio Notification

user75889 — Sun, 03 Jan 2021 13:37:34 GMT

Hello,
I used this in an application that is both advertising and scanning, and I seem to get events from both.
what I'm looking for is to get events only when i have an advertising burst.
since I use both scan and advertising then I understand that some of the advertising events will be disabled and so I want to count them.
I am using SDK v17.0.2 with nrf52840, is that possible?
thanks.

RE: Radio Notification

user82764 — Tue, 19 May 2020 04:00:35 GMT

thank you!

RE: Radio Notification

user13967 — Fri, 07 Apr 2017 07:07:36 GMT

I want to be notified when radio becomes active and inactive. How?

If I use NRF_RADIO_NOTIFICATION_TYPE_INT_ON_BOTH when calling radio_notification_init(), how would I know which event happens in SWI1_IRQHandler()? The input parameter radio_evt is just a bool value.

RE: Radio Notification

user8101 — Mon, 20 Feb 2017 05:47:03 GMT

void SWI1_IRQHandler(bool radio_evt)

When would this ever be an argument of 0? When if ever does the softdevice call SWI1_IRQ but not as a radio_evt?

RE: Radio Notification

user6606 — Tue, 21 Jun 2016 13:55:40 GMT

To disable radio notifications you have a few options, some fit certain solutions better than others. To ensure proper operation we need to heed the following sentence from the SoftDevice specification.

To ensure that the Radio Notification signals behave in a consistent way, the Radio Notification 
shall always be configured when the SoftDevice is in an idle state with no protocol stack or 
other SoftDevice activity in progress. Therefore, it is recommended to configure the Radio 
Notification signals directly after the SoftDevice has been enabled.

Start off by making sure that the first time it is initialized is in a section where the SoftDevice is not active, for example right after initialization.

In the right context, radio notification can be disabled by calling:

// Deinitialize Radio Notification software interrupt
uint32_t ble_radio_notification_uninit(void)
{
    err_code = sd_nvic_ClearPendingIRQ(SWI1_IRQn);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }
    err_code = sd_nvic_DisableIRQ(SWI1_IRQn);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }
    return sd_radio_notification_cfg_set(NRF_RADIO_NOTIFICATION_TYPE_NONE, NRF_RADIO_NOTIFICATION_DISTANCE_NONE);
}

This context limitations is the same as for the first initialization of the radio notifications, as described above. We need to find some context where there will not be any SoftDevice activity. Since we already have radio notifications set up it is simplest to call ble_radio_notification_uninit() inside itself. However if we want to restart it we will be faced with the problem of when/how to restart it.

One of the tools available is a radio timeslot where radio activity is guaranteed to not occur. When using timeslots be aware that you cannot call SoftDevice functions in the signal handler as it executes at priority 0.

RE: Radio Notification

user3550 — Mon, 06 Jun 2016 13:24:53 GMT

Hi,

Once radio notification is enabled how to disable it? Could you please let me know.

RE: Radio Notification

user12611 — Sun, 05 Jun 2016 05:48:45 GMT

I understand and followed this article, but not works

environment. nRF51 DK board, SDK 10 example, Softdevice S110 v8.0.0
Just beacon example: It works, LED1 blink
Added radio notification: compile ok, but no LED blinks

I got answer. I should radio notification init after SoftDevice Init.

RE: Radio Notification

user7554 — Fri, 22 Apr 2016 08:46:12 GMT

For SDK 11 be aware of this bug.

RE: Radio Notification

user7796 — Mon, 15 Feb 2016 14:09:42 GMT

Do I need to disable the radio notifications before starting the bootloader? If yes, you can I do this?

RE: Radio Notification

user8323 — Fri, 23 Oct 2015 07:12:31 GMT

it's great,thank you!