Interrupts: Converting from Arduino to Particle Photon

[ScruffR]

Do you mean an example for FSM?

To FSM or not to FSM (Finite State Machines discussion)

Continuing the discussion from Electron Carrier Board: Let’s talk about Finite State Machines (FSM’s) here! Some interesting reads: FSM Particle library - ported from Arduino:

(especially the last post that links to a Hackster article)

If you mean interrupt, then I have given you an example for a toggle and count ISR.