Interrupt before Advertising

[Julien]

Hi,

In order to use a component during my device send an advertising, i would like to catch an interruption just before the advertising start.

The goal of this component is to save energy during the peak current of advertising.

Firstly, I decide to use radio_notification_librairies, but the radio notification also occurs during flash process and i have to use flash continuously and i have no way to know if the interrupt come from BLE or flash. Is there a solution to identifiate where come from the interrupt ?

This issue has been posted on this ticket  RE: Fixing radio notification and flash write/erase conficts. 

In this ticket, they advise to use Timeslot API instead.

Is it possible to use timeslot API to prevent from advertising activity ?

The device is a custom board based on nrf52832 with SD: 132 v6.1.0.

Best Regards,

Julien

[Sigurd]

Hi!

I'm not sure what you plan to do in the interrupt, but if you are setting some GPIO high/low, then maybe the PA/LNA GPIO interface is suitable. 

https://infocenter.nordicsemi.com/topic/sds_s140/SDS/s1xx/radio_notif/radio_notif_palna.html

 PA / LNA support in S132 

PS: If this is a new project, I recommend looking into using nRF Connect SDK instead.

[Julien]

Hi,

Unfortunatly, is not for a new project in this case.

Pa/Lna will not be suitable because i need to send I2C data before the advertising.

My plan is to send this data just before advertising in order to save energy from the battery.

For information the component use is from Nexperia, the NBM7100.

Best Regards,

[Sigurd]

Hi,

I think in that case, the Radio Notifications are the way to go.

If the limitation where flash write and flash erase operations are notified to the application as Radio Events, is a issue for you, then maybe you can set some flag and temporarily pause the advertising or your energy saving feature, while you do the flash write/erase.

[Julien]

Okay, i will try this way.

To complete, do we have an idea why flash operations occurs radio events ?

Best regards,

Julien

[Sigurd]

Julien said:

To complete, do we have an idea why flash operations occurs radio events ?

I don't have too many details around this. It's a limitation with the implementation.