Interrupt with GPIO port event on Zephyr

[Damezumari]

Hi,

I want to trigger a wake up from System ON sleep (WFE) using the LDETECT signal on Zephyr.

I managed to wake up using Zephyr's gpio API but my understanding is that it use high accuracy events from GPIOTE and not Port Event with Sense. 

This is a problem for my application because i want to achieve the lowest energy consumption (RTC wake up + Port Event should be sub 2uA).

I read a lot of post on the forum but i couldn't work my way out of the exemples and the numerous API nrf / gpio / gpiote / nrfx / registers ... 

Is there an exemple of waking up from system ON using port event on Zephyr ?

Many thanks,

[Priyanka]

Hi,

Zephyr always enters system ON mode in the idle thread. So in order to get PORT events, you could use the GPIO_INT_LEVEL_* flags and not GPIO_INT_EDGE_* mentioned here.

Regards,

Priyanka