Reading battery level over LWM2M

[hubert_11]

Hi!

I might be missing something obvious, but I'm having trouble reading the battery level at the Coiote LWM2M server connected to my Thingy 91.

The Thingy runs the asset tracker firmware, and I'm using SDK 2.6.1. 

The problem is that the server does not show the battery level; instead, it shows "not provided." When I try to use the "read resource" button, it returns with "failed". 
I don't recall having this issue with the nRF cloud in the past.

Is there perhaps some configuration that I need to enable to allow the LWM2M server to read the battery level that I overlooked?

[Øyvind]

Hello, 

Does the device show correct sensor data for e.g. temperature in Coiote? What does the logs of the Thingy:91 say, could you please provide these?

Thanks.

Kind regards,
Øyvind

[Øyvind]

Here is the answer from Asset Tracker developers

The firmware doesn't provide battery status / percentage. However, in object 3 (device obj) we set voltage level.

[Power Source Voltage 307]

More information can be found under https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/zephyr/connectivity/networking/api/lwm2m.html

Kind regards,
Øyvind

[hubert_11]

Hi,

Thank you for your response!

I do see the power source voltage that you mention, however, it always reads 94 mV. 
It does not change when I connect or disconnect the USB cable, or after charging.