import time
from machine import Pin
from machine import ADC, Pin
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")

button = Pin(20,mode = Pin.IN, pull = Pin.PULL_UP)
led1 = Pin(17, Pin.OUT)
led2 = Pin(18, Pin.OUT)
led3 = Pin(19, Pin.OUT)
isPressed = False
val = 0

def addValue(val):

    val += 1

    if val > 7:
        val = 0

    return val

def switchLED(led1,led2,led3,val):
    
    if (val & 0b001):

        led1.on()

    else:
        led1.off()
        
    
    if (val & 0b010):

        led2.on()

    else: 
        led2.off()
        

    if (val & 0b100):

        led3.on()
    
    else:
        led3.off()
        
    return
        

  
while True:

    if button.value() == 0 and not isPressed:
        print("button pressed")
        val = addValue(val)
        switchLED(led1,led2,led3,val)
        print(val)
        isPressed = True
        time.sleep(0.050)

    if button.value() == 1 and isPressed:
        isPressed = False
        time.sleep(0.050)