from machine import Pin
import time

# Pin definitions
btn_pin = 4  # GPIO pin for the button
led_pin = 12  # GPIO pin for the LED

# Set up pins
button = Pin(btn_pin, Pin.IN, Pin.PULL_UP)  # Set button pin as input with pull-up resistor
led = Pin(led_pin, Pin.OUT)  # Set LED pin as output

# If button is pushed, light up LED
try:
    while True:
        if button.value() == 0:  # Button pressed (active low)
            led.value(1)  # Turn LED on
        else:  # Button released
            led.value(0)  # Turn LED off
        time.sleep(0.1)  # Small delay to debounce the button

except KeyboardInterrupt:
    print("Program stopped.")