from machine import Pin
from time import sleep

counter = 1;
led1 = Pin(15, Pin.OUT)
led2 = Pin(14, Pin.OUT)
led3 = Pin(13, Pin.OUT)
button = Pin(12, Pin.IN, Pin.PULL_DOWN)

counter = 0;
while True:
    if (button.value()):
        if (counter == 0):
                led1.high()
                sleep(0.5)
                counter = counter + 1
        elif (counter == 1):
                led2.high()
                sleep(0.5)
                counter = counter + 1
        elif (counter == 2):
                led3.high()
                sleep(0.5)
                counter = counter + 1
        elif (counter == 3):
                led1.low()
                led2.low()
                led3.low()
                sleep(0.5)
                counter = 0



# state = 0
# while True:
#     if (button.value() == 1):
#         state += 1
#         sleep(1)
#     if(state == 1):
#         led1.high()
#         led2.low()
#         led3.low()
#     if(state == 2):
#         led1.high()
#         led2.high()
#         led3.low()
#     if(state == 3):
#         led1.high()
#         led2.high()
#         led3.high()
#     if(state == 4):
#         led1.low()
#         led2.low()
#         led3.low()
#         state = 0