NRF9160 POFWARN

[Thomas]

Hi,

I was investigating the registers of the nrf9160 using segger embedded studio and found POFCON, which is not mentioned in the documentation.

Can you provide the documentation for this? Also, what is the best way to get access to the POFWARN interrupt? From what I see nrf_power_clock.c is using the interrupt for the clock without allowing access to the power interrupts? 

Kind regards,

Thomas

[Simonr]

Hi again Thomas

Latest update from our experts internally:

As of now, you will have to use the %XPOFWARN AT command and get the power off warning through the modem. Please note that the minimum level should not be set below 3V as the PMIC will cut the power to the SoC at ~2.95V (depending on the operating conditions). The minimum supply level on the nRF9160 is 3V as stated in the product specification, and we will update the AT command guide as soon as possible to better communicate this.

As for the EXTPOFCON feature/registers where the application can get power off warning events directly, we are in progress of documenting this in the PS and adding it to MDK.

Best regards,

Simon

[Thomas]

Thanks for all the helpful Simon! It is great to hear it will be added to the  MDK and PS.