from machine import Pin, Timer
from time import sleep
import machine
import utime
button = machine.Pin(7, machine.Pin.IN, machine.Pin.PULL_UP)
button2 = machine.Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)

gp = [10,11,12,13]

patterns = [[1,0,0],
            [0,1,0],
            [2,1,0],
            [1,2,0],
            [2,0,0],
            [0,2,0],
            [3,0,0],
            [0,3,0],
            [2,3,0],
            [3,2,0],
            [1,3,0],
            [3,1,0]]


led = [Pin(i, Pin.IN) for i in gp]

def reset_pins():
    global led
    led = [Pin(i, Pin.IN) for i in gp]
    for i in led:
        i.value(0)
    
def set_pins(high, low):
    global led
    reset_pins()
    led[high] = Pin(gp[high], Pin.OUT)
    led[low] = Pin(gp[low], Pin.OUT)
    led[high].value(1)
    led[low].value(0)

def light_led(led_num):
    set_pins(patterns[led_num][0], patterns[led_num][1])
    
i = -1
   
prev_button_state = 1
prev_button2_state = 1

while True:
    button_state = button.value()
    button2_state = button2.value() 
    if (button_state == 0 and prev_button_state == 1):
        i=i+1
        light_led(i)
        utime.sleep(0.3)
        
    if (button2_state == 0 and prev_button2_state == 1):
        i=i+2 
        light_led(i)
        utime.sleep(0.3)
        
    prev_button_state = button_state
    prev_button2_state = button2_state