from machine import Pin
import time

# Definer GPIO-nummer
button_pins = [15, 14, 13, 12]   # GPIO for knapper
relay_pins  = [16, 17, 18, 19]   # GPIO for reléer
led_pins    = [20, 21, 22, 26]   # GPIO for LED-er

# Sett opp pinner
buttons = [Pin(pin, Pin.IN, Pin.PULL_UP) for pin in button_pins]
relays  = [Pin(pin, Pin.OUT) for pin in relay_pins]
leds    = [Pin(pin, Pin.OUT) for pin in led_pins]

# Initialiser tilstand: relé og LED av
relay_states = [False] * 4
for relay, led in zip(relays, leds):
    relay.value(0)   # aktiv-lav: HIGH = av
    led.value(0)     # LED av

# For debouncing
last_button_states = [1] * 4

def toggle_channel(i):
    relay_states[i] = not relay_states[i]
    relays[i].value(relay_states[i])  # aktiv-lav: 0 = PÅ
    leds[i].value(relay_states[i])        # LED følger logikk

# Hovedsløyfe
while True:
    for i in range(4):
        current_state = buttons[i].value()
        if last_button_states[i] == 1 and current_state == 0:
            toggle_channel(i)
            time.sleep(0.2)  # debounce delay
        last_button_states[i] = current_state
    time.sleep(0.01)