from machine import Pin, PWM, ADC
import utime

# Pin Setup
ldr = ADC(28)              # Pin A0 dari LDR ke GP28
led = Pin(6, Pin.OUT)      # LED Merah di GP6
buzzer = PWM(Pin(15))      # Buzzer di GP15 dengan PWM

# Konfigurasi awal buzzer
buzzer.freq(1000)
buzzer.duty_u16(0)

# Fungsi konversi ADC ke Lux
def adc_to_lux(adc_value):
    return (adc_value / 65535) * 900 + 10  # Rentang kira-kira 10 - 1000 lux

# Kalibrasi nilai normal hanya sekali di awal
lux_normal = 0

# Loop utama
while True:
    analog_value = ldr.read_u16()
    lux = adc_to_lux(analog_value)

    if lux_normal == 0:
        lux_normal = lux
        print(f"Lux Normal (kalibrasi awal): {lux_normal}")

    print(f"LDR Value: {analog_value} | Lux: {lux}")

    if lux > lux_normal + 100:
        # Kondisi: Lebih terang 100 LUX dari normal
        buzzer.duty_u16(int(65535 * 0.25))  # Duty cycle 25%
        
        # LED berkedip selama 2 detik (dengan interval 200ms, total 10 kedipan)
        for i in range(10):
            led.toggle()
            utime.sleep(0.2)

        led.off()
        buzzer.duty_u16(0)  # Matikan buzzer
    else:
        led.off()
        buzzer.duty_u16(0)

    utime.sleep(0.2)  # Delay pembacaan