Expander Serial

[MateuszManaj]

What if I want to listen (EvtPinListener) to change pin state not in Arduino itself but in expander chip ?

[johnnyb]

In short, you need to make your own listener to do this.

[johnnyb]

Depending on the type of serial, you might be able to do this with my Shifty library, though it is totally untested - https://github.com/johnnyb/Shifty

[MitchHunter20]

is there a lisner delay timer for example if a button is pushed for 30s then send action