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Maximal power efficiency in main loop - further question

Hi,

I asked previously about power efficiency for the NRF52840 SDK version V15 (https://devzone.nordicsemi.com/f/nordic-q-a/36083/maximal-power-efficiency-in-main-loop).

At that time I used the timer to poll the SPI using SPIM and timer event callbacks. I got the info that all I need is the main loop:

     for (;;) sd_app_evt_wait();

I would like to add incoming interrupt callbacks (using GPIOs) while keeping power management efficient.

Do I need to change my main loop?

Thanks,

Daniel

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