from machine import Pin
from time import sleep

#funcion para los pines del motor
def motor (x):
    a1.value(int(x[0]))
    b1.value(int(x[1]))
    a2.value(int(x[2]))
    b2.value(int(x[3]))
 
boton=Pin(14,Pin.IN,Pin.PULL_UP)
a1=Pin(23,Pin.OUT)
a2=Pin(22,Pin.OUT)
b1=Pin(21,Pin.OUT)
b2=Pin(19,Pin.OUT)

#lista de secuencia
lista=["1111","1100","0110","0011","1001"]
inc=0 #incrementos
while(1):
  
    if boton.value()==0:
        if inc==0:
           inc=1
            
        else:
            inc=0
        while(boton.value()==0):
            sleep(0.1)

    if inc==0:
        for i in lista:
            motor(i)
            sleep(0.25)
    if inc==1:
        for i in range(4,-1,-1):
            motor(lista[i])
            sleep(0.25)
    if inc==0:
        for i in lista:
            motor(i)
            sleep(0.1)
    else:
        for i in range(4,-1,-1):
            motor(lista[i])
            sleep(0.1)