from machine import Pin, Timer
def timer(x):
    global i, direc
    if direc==0:
        i=i+1
        if i>15:
            i=0
    else:
        i=i-1
        if i<0:
            i=15
def inter(x):
    global direc
    direc=not direc

def display(x):
    a.value(int(x[0]))
    b.value(int(x[1]))
    c.value(int(x[2]))
    d.value(int(x[3]))
    e.value(int(x[4]))
    f.value(int(x[5]))
    g.value(int(x[6]))

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)

t0=Timer(0)
t0.init(period=1000, mode=Timer.PERIODIC, callback=timer)
push=Pin(14, Pin.IN, Pin.PULL_UP)
push.irq(trigger=Pin.IRQ_FALLING, handler=inter)

lista=["1111110", "0110000", "1101101", "1111001", "0110011", "1011011", "1011111", "1110000", 
    "1111111", "1111011", "1110111", "0011111", "1001110", "0111101", "1001111", "1000111"]

i=0
direc=0
while(True):
    display(lista[i])