from machine import Pin
from time import sleep

A = Pin(23, Pin.OUT)
B = Pin(22, Pin.OUT)
C = Pin(21, Pin.OUT)
D = Pin(19, Pin.OUT)
E = Pin(18, Pin.OUT)
F = Pin(5, Pin.OUT)
G = Pin(17, Pin.OUT)
DP = Pin(16, Pin.OUT)
canal_A = Pin(14, Pin.IN)
canal_B = Pin(12, Pin.IN)

def contador (x, punto):
    A.value(x[0])
    B.value(x[1])
    C.value(x[2])
    D.value(x[3])
    E.value(x[4])
    F.value(x[5])
    G.value(x[6])
    DP.value(punto)

numeros = [
    [1,1,1,1,1,1,0],   # 0
    [0,1,1,0,0,0,0],   # 1
    [1,1,0,1,1,0,1],   # 2
    [1,1,1,1,0,0,1],   # 3
    [0,1,1,0,0,1,1],   # 4
    [1,0,1,1,0,1,1],   # 5
    [1,0,1,1,1,1,1],   # 6
    [1,1,1,0,0,0,0],   # 7
    [1,1,1,1,1,1,1],   # 8
    [1,1,1,1,0,1,1] ]  # 9

def isrA (y):
    global direccion, cnt, n
    if canal_B.value()==1:
        direccion = 0
        cnt = cnt + 1
    else:
        direccion = 1
        cnt = cnt - 1

    if cnt >= pulsos:
        cnt = 0
        if n < 9:
            n = n + 1

    if cnt <= -pulsos:
        cnt = 0
        if n > -9:
            n = n - 1


def isrB (y):
    global direccion
    if canal_A.value()==1:
        direccion = not direccion

canal_A.irq(trigger=Pin.IRQ_FALLING, handler=isrA)
canal_B.irq(trigger=Pin.IRQ_FALLING, handler=isrB)
direccion = 0
cnt = 0
n = 0
pulsos = 20

while(1):
    if n >= 0:
        contador(numeros[n], 0)

    else:
        contador(numeros[0 - n], 1)

    print(cnt)