Write a program using state$-$machine program structure that will act as a Neopixel Led$-$ring driver.

Task $(20$p$)$

Interface with a push$-$button as an interrupt. Within the interrupt handling subroutine increment a press counter, and depending on the value of this counter, select the next mode.

$2.$ Task$(20p)$

Implement a state machine structure inside the main LOOP. Inside the states, only call the corresponding function.

$3.$ Task$(15p)$

Express the function "blink $($int $d)$;$".$ In this function, all the pixels should turn RED, and perform a simultaneous turn$-$on and turn$-$off sequence with a delay defined as $"d".$

$4.$ Task$(15p)$

Express the function "runningLight $($int d$,$ bool dir$)$;$".$ The LED$-$ring should play an effect, that only a singte pixel is alit in RED, and it appears to be circling around the ring. Depending on the "dir" direction argument, it should "run" clockwise or counterclockwise.

$5.$ Task $(15$p$)$

Express the function "breathe $($int d$)$;$".$ All the pixels on the ring should display a breathing$-$like effect in GREEN. Each LED's brightness should increment, then decrement.

$6.$ Task$(15p)$

Express the function "randomLight $($int d$)$;$".$ On the ring a randomly chosen LED pixel should turn on and stay appeared until a given time.