from machine import Pin
from time import sleep

#BUTTONS Defined
redbutton = Pin(4, Pin.IN, Pin.PULL_UP)
bluebutton = Pin(12, Pin.IN, Pin.PULL_UP)
greenbutton = Pin(8, Pin.IN, Pin.PULL_UP)

#LED Defined
redled = Pin(18, Pin.OUT)
blueled = Pin(16, Pin.OUT)
greenled = Pin(17, Pin.OUT)

# ON / OFF STATES (old/now)
red_now = 1
red_old = 1

blue_now = 1
blue_old = 1

green_now = 1
green_old = 1

#Tracking LED state
red_led_state = False
green_led_state = False
blue_led_state = False
 

#MECHANISM
while True:
    
    # Buttons value is LED current state
    red_now = redbutton.value()
    blue_now = bluebutton.value()
    green_now = greenbutton.value()


    #RED LED
    if red_now == 1 and red_old == 0:
        
        red_led_state = not red_led_state  #toggle led state
        redled.value(red_led_state)
        print("Selected: RED")


    #GREEN LED
    if green_now == 1 and green_old == 0:  
        
        green_led_state = not green_led_state  #toggle led state
        greenled.value(green_led_state)

        print("Selected: GREEN")


    #BLUE LED
    if blue_now == 1 and blue_old == 0:   
        
        blue_led_state = not blue_led_state  #toggle led state
        blueled.value(blue_led_state)
        print("Selected: BLUE")


    # NEW_STATES GETS OLD_STATE
    red_old = red_now
    blue_old = blue_now
    green_old = green_now
    sleep(0.05)