from machine import Pin

def isrA(x):
    global cnt
    if canal_B.value() == 0:
        cnt = cnt + 1

def isrB(x):
    global cnt
    if canal_A.value() == 0:
        cnt = cnt - 1

def led(a):
    A.value(int(a[0]))
    B.value(int(a[1]))
    C.value(int(a[2]))
    D.value(int(a[3]))
    E.value(int(a[4]))
    F.value(int(a[5]))
    G.value(int(a[6]))

canal_A = Pin(14, Pin.IN)
canal_A.irq(trigger=Pin.IRQ_FALLING, handler=isrA)
canal_B = Pin(12, Pin.IN)
canal_B.irq(trigger=Pin.IRQ_FALLING, handler=isrB)

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(17, Pin.OUT)
G = Pin(16, Pin.OUT)
p = Pin(15, Pin.OUT)

lista = [
    "1111011","1111111","1110000","1011111","1011011",
    "0110011","1111001","1101101","0110000","1111110",
    "0110000","1101101","1111001","0110011","1011011",
    "1011111","1110000","1111111","1111011"]

cnt = 0
i = 9

while (1):
    v = int(cnt / 20)

    if v > 0:
        i = i + v
        if i > 18:
            i = 18
        cnt = 0

    elif v < 0:
        i =i + v
        if i < 0:
            i = 0
        cnt = 0

    led(lista[i])
    if i < 9:
        p.value(1)
    else:
        p.value(0)
    print(cnt)