Computer Lock Button Using CircuitPython

CircuitPython-LockButton.py

# SPDX-FileCopyrightText: 2021 John Furcean
# SPDX-License-Identifier: MIT

import time
import board  
from digitalio import DigitalInOut, Direction, Pull

import usb_hid
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
from adafruit_hid.keycode import Keycode

def button_pressed(button):
    return not button.value

kbd = Keyboard(usb_hid.devices)

# Digital input with pullup on D1
# this is the pin that the button is connected to
button = DigitalInOut(board.D1)
button.direction = Direction.INPUT
button.pull = Pull.UP

# LED button light
# comment out if your button doesn't have an LED
button_led = DigitalInOut(board.D0)
button_led.direction = Direction.OUTPUT
button_led.value = True

button_held_in = False
button_index = 0
change_button = False
 
while True:

    # detect if the button is recently pressed in
    if button_pressed(button) and not button_held_in:
        button_held_in = True


    # detect if the button has been released
    if not button_pressed(button) and button_held_in:

        #Send Lock Command

        # Uncomment for Windows
        #kbd.send(Keycode.WINDOWS , Keycode.L)

        # Uncomment for Mac
        kbd.send(Keycode.CONTROL, Keycode.COMMAND, Keycode.Q)

        # Uncomment for (most) Linux 
        #kbd.send(Keycode.ALT, Keycode.CONTROL, Keycode.L)
        
        # update the state of the my_button_held_in Boolean         
        button_held_in = False