"""Example for pi pico. Button-controlled LED.

Wiring: switch to ground pin on pico, and to pin 18.
"""

import board
import digitalio

led = digitalio.DigitalInOut(board.LED)
led.direction = digitalio.Direction.OUTPUT

switch = digitalio.DigitalInOut(board.GP18)
switch.direction = digitalio.Direction.INPUT
switch.pull = digitalio.Pull.UP

while True:
    led.value = not switch.value