nrf9160: Mqtt example with CONFIG_POWER_OPTIMIZATION fails to load

[Stratosphere]

Hi,

Doing some power testing on the nrf9160 custom board using the MQTT example, I am seeing between 190uA to 200uA of sleep current using a meter.

I disabled serial in both SPM and the mqtt application, included PSM etc. I have seem many places include CONFIG_POWER_OPTIMIZATION=y in the proj.conf file but when I try to add it to my proj.conf , the project fails to load 

What can i do to further reduce the idle current down from 190uA? I have seen many people here able to achieve much lower currents.

I have also gone through the example of measure idle current in PSM mode : https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/hardware-design/posts/measuring-psm-idle-current-on-the-nrf91-dk

Regards

Noaman

[Hakon]

Hello,

What do you mean by "fails to load". Is it not compiling properly or do you have problems flashing or is it something else?

[Stratosphere]

Hi Hakan,

the project does not open in SES anymore.

Please see the screenshot:

[Hakon]

Try installing the latest version of SES and see if that solves it.

[Stratosphere]

Hi Hakan,

USing SES 4.42 didnt solve the problem

[Hakon]

V4.52 is the latest version, try that.