Enable and Disable ADC peripheral of nRF52840 to save power in nRF connect SDK

[BilalAliAhmad]

Is it possible to enable and disable the ADC peripheral of nRF52840 to save power in nRF connect SDK? In our application, we use ADC to get battery voltage samples after every 1 hour. I was thinking if it would be useful to enable and disable ADC peripherals during inactive use to save power. If Yes, how to do it in nRF connect SDK? I am not able to find any API. 

[Jørgen Holmefjord]

Hi,

Are you using the Zephyr ADC APIs, or are you using the NRFX SAADC driver API? The Zephyr API does not have any functions to uninit the SAADC, but the NRFX driver does have a uninit function. Are you experiencing high current consumption? Optimally, the Zephyr driver should not have high current consumption between sampling, but this depends a bit on your configuration.

Best regards,
Jørgen

[BilalAliAhmad]

I am using Zephyr ADC APIs. Does that means the Zephyr driver does that automatically? Like ADC does not draw any power when we are not sampling any data?