import time
import board
import analogio
import digitalio

# === Pin setup ===
ldr = analogio.AnalogIn(board.GP26)     # LDR connected to GP26 (ADC0)
led = digitalio.DigitalInOut(board.GP15)
led.direction = digitalio.Direction.OUTPUT

# === Threshold for dark/light ===
# You can adjust this value based on your readings
THRESHOLD = 30000

def read_light():
    """Read and return the LDR analog value (0–65535)."""
    return ldr.value

print("🌗 LDR + LED System Started...")

while True:
    light_value = read_light()
    print("LDR Value:", light_value)

    # LED control logic
    if light_value < THRESHOLD:
        led.value = True   # Dark → LED ON
    else:
        led.value = False  # Bright → LED OFF

    time.sleep(0.5)