Cant build zephyr battery example

[BehicMV]

Hi,

I was trying to build the zephyr battery example Battery Voltage Measurement — Zephyr Project Documentation (nordicsemi.com) . But when I was building the project, it raises an error like this:

note: in expansion of macro 'DEVICE_DT_GET'

78 | .adc = DEVICE_DT_GET(DT_IO_CHANNELS_CTLR(ZEPHYR_USER)),

What should I do? Or is there any way to read/calculate/measure the input voltage to a pin?

[runsiv]

I would recommend going through our tutorial on decacadamy to learn more about it

https://academy.nordicsemi.com/lessons/lesson-3-elements-of-an-nrf-connect-sdk-application/

Regards

Runar

[BehicMV]

Okay thank you

But do you know the codes in necessary overlay or dts files? It must be static. But there is no open-source that built zephyr/battery. 

[BehicMV]

This is the way which I have tried. I still can not build. This is the last step for my school project and I am extremely close to the end, however if I can not solve this step I won't be able to finish before its due date. So, any help would be highly appreciated. Thanks a lot in advance! 

[BehicMV]

Also my file structure like this(dts file is empty): 

[runsiv]

Hi,

1. Did you create your nrf52840dk.dts yourself? 

/ {
   zephyr,user {
      io-channels = <&adc 4>;
   };
};

? 

2. Rename the .overlay to nrf52840dk_nrf52840.overlay

Cheers

Runar