3 Button Keyboard in CircuitPython for Trinket M0

3button-keyboard.py

# Trinket 3 Button Keyboard

import board
from digitalio import DigitalInOut, Direction, Pull

from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keycode import Keycode
import adafruit_dotstar as dotstar
import time

# One pixel connected internally!
dot = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)

# Built in red LED
led = DigitalInOut(board.D13)
led.direction = Direction.OUTPUT

# Digital input with pullup on D1
button1 = DigitalInOut(board.D1)
button1.direction = Direction.INPUT
button1.pull = Pull.UP
button1_in = False

# Digital input with pullup on D2
button2 = DigitalInOut(board.D2)
button2.direction = Direction.INPUT
button2.pull = Pull.UP
button2_in = False


# Digital input with pullup on D3
button3 = DigitalInOut(board.D3)
button3.direction = Direction.INPUT
button3.pull = Pull.UP
button3_in = False


# Used if when we do HID output,
kbd = Keyboard()

######################### HELPERS ##############################


# Helper to give us a nice color swirl
def wheel(pos):
    # Input a value 0 to 255 to get a color value.
    # The colours are a transition r - g - b - back to r.
    if (pos < 0):
        return (0, 0, 0)
    if (pos > 255):
        return (0, 0, 0)
    if (pos < 85):
        return (int(pos * 3), int(255 - (pos*3)), 0)
    elif (pos < 170):
        pos -= 85
        return (int(255 - pos*3), 0, int(pos*3))
    else:
        pos -= 170
        return (0, int(pos*3), int(255 - pos*3))

######################### MAIN LOOP ##############################

i = 0
while True:
  # spin internal LED around! autoshow is on
  dot[0] = wheel(i & 255)


  if not button1.value and not button1_in:
      print("Button on D1 pressed!")
      
      #Change to be the Keyboard Combo that suits you
      kbd.press(Keycode.SPACEBAR)
      kbd.release_all()

      button1_in = True
  elif button1.value and button1_in:
      button1_in = False


  if not button2.value and not button2_in:
      print("Button on D2 pressed!")

      #Change to be the Keyboard Combo that suits you
      kbd.press(Keycode.COMMAND)
      kbd.press(Keycode.SHIFT)
      kbd.press(Keycode.DELETE)
      kbd.release_all()
      button2_in = True


  elif button2.value and button2_in:
      button2_in = False

  if not button3.value and not button3_in:
      print("Button on D3 pressed!")

      #Change to be the Keyboard Combo that suits you
      kbd.press(Keycode.F5)
      kbd.release_all()
      button3_in = True

  elif button3.value and button3_in:
      button3_in = False

  i = (i+1) % 256  # run from 0 to 255