Analogic events

[Pierre-Julien Cazaux]

Hello,

I recently used GPIOTE Events to manage Digital state changes and this is awesome. I would like to perform similar thing but when a PIN goes under/above a given voltage... I saw the SAADC api but the only understanding I have is to use it in combinaison with a TIMER in order to make regular checks and perform according actions.

Could you please enlighten me on this topic ? 

Thx

[Stian Røed Hafskjold]

Hi, you should use the comparator: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/comp.html?cp=4_2_0_37#topic

It is designed to do exactly what you want.

[Pierre-Julien Cazaux]

Thx Stian Røed Hafskjold for this response. I successfully implemented a comparator thx to your help. Just one more question : do I have to use 2 comparators to perform action based on UPs and DOWNs or is it somehow possible to know the direction of CROSS events ?

I tried to find how are nrf_lpcomp_event_t event structured but I haven't found yet...

Thx in advance