How to put nRF9160 DK in deep sleep mode?

RE: How to put nRF9160 DK in deep sleep mode?

EdP — Wed, 09 Oct 2019 12:19:02 GMT

That's what I suspected.

Thank you very much.

RE: How to put nRF9160 DK in deep sleep mode?

Hakon — Wed, 09 Oct 2019 11:51:34 GMT

Hi,

The "REGULATORS" peripheral, where the SYSTEMOFF register resides, is in the secure mode by default.

To add this to the non-secure region (the application space), you need to modify the spm.c file as explained here:

https://devzone.nordicsemi.com/f/nordic-q-a/47037/nrf9160-system-off-mode-bus-fault-error/188200#188200

After this modification, you should be able to enter SYSTEMOFF mode:

#include <nrf9160.h>

...

NRF_REGULATORS_NS->SYSTEMOFF = 1;

Kind regards,

Håkon

RE: How to put nRF9160 DK in deep sleep mode?

EdP — Wed, 09 Oct 2019 11:08:55 GMT

I'm also trying to enter SYSTEMOFF on my 9160 DK with no luck so far.

Tried to follow the link but got Access Denied.

Any chances to have the answer unlocked?

TIA

RE: How to put nRF9160 DK in deep sleep mode?

Hakon — Mon, 03 Jun 2019 09:10:38 GMT

Looks like there is a more detailed answer to your question here; devzone.nordicsemi.com/.../230141

RE: How to put nRF9160 DK in deep sleep mode?

Haifan — Sat, 01 Jun 2019 23:45:39 GMT

On page 56 of the manual, it says the current consumption is 1.4uA in the mode IMCUOFF0 (MCU off, modem off, no RAM retention, wake on GPIO and reset). How do I put it in this mode? I have the eval kit.

RE: How to put nRF9160 DK in deep sleep mode?

Haifan — Fri, 31 May 2019 17:12:37 GMT

I want to put it in deep sleep to make the battery last as long as possible. The spec says Page 56: IMCUOFF0( MCU off, modem off, no RAM retention, wake on GPIO and reset) has power consumption of 1.4uA. How do I put it in this mode? Thanks.

RE: How to put nRF9160 DK in deep sleep mode?

Hakon — Fri, 31 May 2019 16:33:33 GMT

Are you talking about system off mode? You can put the chip in system off mode by writing 1 to the SYSTEMOFF register. Not sure if there is another way.