RE: nRF9160 in low power

Håkon Alseth — Mon, 02 May 2022 12:19:40 GMT

Hi,

First, you want to disable the serial interface, as this adds approx. 600 uA to the sleep current.

This is done by creating the folder "child_image" and file spm.conf within this folder.

That child_image\spm.conf shall hold:

CONFIG_SERIAL=n

The same configuration should also be added to the prj.conf:

CONFIG_SERIAL=n

For entering eDRX or PSM, you will need to change one of these to "true":

And setup your wanted edrx or PSM intervals.

Here's a current example of a initial connection and the nRF eventually entering PSM:

Kind regards,

Håkon