Sleep a core

[aasli.gurpreet]

Hello,

I want to compare the voltage used by ESP32 when the tasks are pinned to single core or to both cores.
In comparison, I want to switch off/deep sleep just a single core.
Is there any way to do the same. Thanks.

[ESP_igrr]

You can enable single core mode ("run freertos on first core only" option) in menuconfig. With this option enabled, APP CPU will be clock gated. This will give you a few mA of current savings.
It is not possible to power down APP CPU separately from PRO CPU.