How to get NRF52840 into deep sleep while power supply is low?

[Sealedfire]

Chip: NRF52840

Firmware platform: Wirepas V5

Hello!

I am now writing firmware for a product based on HW&SW mentioned above.

It is powered by battery and sends data periodically.

I want to halt or deep-sleep the chip after detecting the supply voltage is low enough(~2.5V), and resume after voltage is normal.

Problem is that Wirepas SDK doesn't provide such APIs, so I have to implement it in application code.

Will you please provide some advice? Where to find related APIs, and how to implement them correctly?

Best regards,

Daniel Duan

[Sealedfire]

Hi Shaney,

Thanks for your suggestion!

Sorry I can't implement this since the Wirepas stack takes control of related registers and no APIs to share with application.

I also asked them for suggestion, seems the best way is to turn off the radio part, and I am waiting for their suggestion.

Anyway I really appreciate your immediate help.

Thanks and best regards!

DanielDuan

[Shaney]

Ah I see sorry that I couldn't be of any more help. I hope you find a solution to your problem.

Have good one!

[Sealedfire]

Hi Shaney,

Don't worry man, I already got feedback from Wirepas support.

Thanks and have a good day!

DanielDuan