import time
import machine
from machine import Pin

tasteri = [ Pin(i, Pin.IN) for i in range(4) ]
dig_pins = [ Pin(d, Pin.OUT) for d in range(4, 8) ]
seg_pins = [ Pin(s, Pin.OUT) for s in range(8, 15) ]

cifre = {
    0: 0b1000000,
    1: 0b1111001,
    2: 0b0100100,
    3: 0b0110000,
    4: 0b0011001,
    5: 0b0010010,
    6: 0b0000010,
    7: 0b1111000,
    8: 0b0000000,
    9: 0b0010000,
    10: 0b1111111
}

def prikazi_cifru(cifra):
    binar = cifre[cifra]
    for i in range(7):
        seg_pins[i].value(binar & 1)
        binar = binar >> 1

def izaberi_poziciju(poz):
    for i in range(4):
        dig_pins[i].value(0)
    dig_pins[poz].value(1)

def prikazi_brojac(brojac):
    d = 1000
    for i in range(4):
        prikazi_cifru(10)
        izaberi_poziciju(i)
        prikazi_cifru((brojac // d) % 10)
        d /= 10

count = 0
stanja_tastera = [ taster.value() for taster in tasteri ]
auto = False
while (True):
    if auto:
        if it == 0:
            count += 1
            it = 9
        it -= 1

    if (tasteri[0].value() and not stanja_tastera[0]):
        count = (count + 1) % 256
    elif (tasteri[1].value() and not stanja_tastera[1]):
        count = (count - 1) % 256
    elif (tasteri[2].value() and not stanja_tastera[2]):
        count = 0
    elif (tasteri[3].value() and not stanja_tastera[3]):
        auto = not auto
        it = 0

    for i in range(4):
        stanja_tastera[i] = tasteri[i].value()

    prikazi_brojac(count)