from machine import Pin, ADC, PWM, Timer
from time import sleep

led = PWM(Pin(32), freq=1000)  
button = Pin(19, Pin.IN, Pin.PULL_UP) 
pot = ADC(Pin(34))             
pot.atten(ADC.ATTN_11DB)

timer = Timer(0)

# Status sistem (ON/OFF)
system_on = False

# Fungsi Debounce teknik untuk menghindari pembacaan ganda pada tombol akibat getaran mekanik saat ditekan.
def debounce(t):
    global system_on
    
    if button.value() == 0:
        system_on = not system_on 
        
        if not system_on:
            led.duty(0)  # matikan LED
        
        print("System:", "ON" if system_on else "OFF")

def button_pressed(pin):
    timer.init(mode=Timer.ONE_SHOT, period=50, callback=debounce)

# interrupt saat tombol ditekan
button.irq(trigger=Pin.IRQ_FALLING, handler=button_pressed)

while True:
    if system_on:
        adc_value = pot.read()  
        
        duty = int(adc_value / 4095 * 1023)
        
        led.duty(duty)
        
        print("ADC:", adc_value, "| PWM:", duty)
    
    sleep(0.1)