Timer callback with alternating paths based upon which path was triggered before

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I am trying to built a timer function/ object that reminds me to stop sitting for hours on end, because I am sadly one of those people who sit way too much.
I know how to get a simple timer started up, and have more or less everything I need except for being able to switch between two paths inside the callback function, based upon what was executed before. So if at T0 Path A is triggered within the timer , at T1 we should go to Path B, then at T2 back to A and so on.
For that part though, I have no clue how I would even achieve it.
Thank you and stay healthy.

Accepted Answer

Sean de Wolski
Sean de Wolski on 23 Dec 2020
You could use a simple persistent variable in your callback function to maintain state.

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