1  # SPDX-FileCopyrightText: 2020 John Thurmond for Adafruit Industries
  2  #
  3  # SPDX-License-Identifier: MIT
  4  
  5  import os
  6  import board
  7  from digitalio import DigitalInOut, Direction
  8  import time
  9  import touchio
 10  
 11  # Set this to True to turn the touchpads into a keyboard
 12  ENABLE_KEYBOARD = True
 13  
 14  # Used if we do HID output, see below
 15  if ENABLE_KEYBOARD:
 16      from adafruit_hid.keyboard import Keyboard
 17      from adafruit_hid.keycode import Keycode
 18      from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
 19      import usb_hid
 20      kbd = Keyboard(usb_hid.devices)
 21      layout = KeyboardLayoutUS(kbd)
 22  
 23  #print(dir(board), os.uname()) # Print a little about ourselves
 24  
 25  led = DigitalInOut(board.D13)
 26  led.direction = Direction.OUTPUT
 27  
 28  touches = [DigitalInOut(board.CAP0)]
 29  for p in (board.CAP1, board.CAP2, board.CAP3):
 30      touches.append(touchio.TouchIn(p))
 31  
 32  leds = []
 33  for p in (board.LED4, board.LED5, board.LED6, board.LED7):
 34      led = DigitalInOut(p)
 35      led.direction = Direction.OUTPUT
 36      led.value = True
 37      time.sleep(0.25)
 38      leds.append(led)
 39  for led in leds:
 40      led.value = False
 41  
 42  
 43  cap_touches = [False, False, False, False]
 44  
 45  def read_caps():
 46      t0_count = 0
 47      t0 = touches[0]
 48      t0.direction = Direction.OUTPUT
 49      t0.value = True
 50      t0.direction = Direction.INPUT
 51      # funky idea but we can 'diy' the one non-hardware captouch device by hand
 52      # by reading the drooping voltage on a tri-state pin.
 53      t0_count = t0.value + t0.value + t0.value + t0.value + t0.value + \
 54                 t0.value + t0.value + t0.value + t0.value + t0.value + \
 55                 t0.value + t0.value + t0.value + t0.value + t0.value
 56      cap_touches[0] = t0_count > 2
 57      cap_touches[1] = touches[1].raw_value > 3000
 58      cap_touches[2] = touches[2].raw_value > 3000
 59      cap_touches[3] = touches[3].raw_value > 3000
 60      return cap_touches
 61  
 62  while True:
 63      caps = read_caps()
 64      print(caps)
 65      # light up the matching LED
 66      for i,c in enumerate(caps):
 67          leds[i].value = c
 68      if caps[0]:
 69          if ENABLE_KEYBOARD:
 70              # Zoom
 71              kbd.press(Keycode.ALT, Keycode.V)
 72              kbd.release(Keycode.V)
 73              time.sleep(0.25)
 74              kbd.press(Keycode.A)
 75              kbd.release_all()
 76      if caps[1]:
 77          if ENABLE_KEYBOARD:
 78              # Teams
 79              # Note that video toggle doesn't work in the web app
 80              kbd.press(Keycode.CONTROL, Keycode.SHIFT, Keycode.M)
 81              kbd.release(Keycode.M)
 82              time.sleep(0.5)
 83              kbd.press(Keycode.O)
 84              kbd.release_all()
 85      if caps[2]:
 86          if ENABLE_KEYBOARD:
 87              # Skype
 88              kbd.press(Keycode.CONTROL, Keycode.M)
 89              kbd.release(Keycode.M)
 90              time.sleep(0.5)
 91              kbd.press(Keycode.SHIFT, Keycode.K)
 92              kbd.release_all()
 93      if caps[3]:
 94          if ENABLE_KEYBOARD:
 95              # Jitsi
 96              kbd.press(Keycode.M)
 97              kbd.release(Keycode.M)
 98              time.sleep(0.5)
 99              kbd.press(Keycode.V)
100              kbd.release_all()
101      time.sleep(.2)