1  # SPDX-FileCopyrightText: 2021 Eva Herrada for Adafruit Industries
  2  # SPDX-License-Identifier: MIT
  3  
  4  # General imports
  5  import time
  6  import random
  7  import board
  8  import digitalio
  9  import neopixel
 10  
 11  # HID imports
 12  from adafruit_hid.keyboard import Keyboard
 13  from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
 14  
 15  # BLE imports
 16  import adafruit_ble
 17  from adafruit_ble.advertising import Advertisement
 18  from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
 19  from adafruit_ble.services.standard.hid import HIDService
 20  from adafruit_ble.services.standard.device_info import DeviceInfoService
 21  
 22  try:
 23      from audiocore import WaveFile
 24  except ImportError:
 25      from audioio import WaveFile
 26  
 27  try:
 28      from audioio import AudioOut
 29  except ImportError:
 30      try:
 31          from audiopwmio import PWMAudioOut as AudioOut
 32      except ImportError:
 33          pass  # not always supported by every board!
 34  
 35  # Enable the speaker
 36  spkrenable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
 37  spkrenable.direction = digitalio.Direction.OUTPUT
 38  spkrenable.value = True
 39  
 40  
 41  # Make the input buttons
 42  btn1 = digitalio.DigitalInOut(board.D10)  # Marked A3
 43  btn1.direction = digitalio.Direction.INPUT
 44  btn1.pull = digitalio.Pull.UP
 45  
 46  btn2 = digitalio.DigitalInOut(board.D9)  # Marked A2
 47  btn2.direction = digitalio.Direction.INPUT
 48  btn2.pull = digitalio.Pull.UP
 49  
 50  btn3 = digitalio.DigitalInOut(board.D3)  # Marked SCL A4
 51  btn3.direction = digitalio.Direction.INPUT
 52  btn3.pull = digitalio.Pull.UP
 53  
 54  central = digitalio.DigitalInOut(board.D0)  # Marked RX A6
 55  central.direction = digitalio.Direction.INPUT
 56  central.pull = digitalio.Pull.UP
 57  
 58  led = digitalio.DigitalInOut(board.D2)  # Marked SDA A5
 59  led.switch_to_output()
 60  led.value = False
 61  
 62  buttons = [btn1, btn2, btn3]
 63  upper = len(buttons) - 1
 64  
 65  ble_enabled = digitalio.DigitalInOut(board.SLIDE_SWITCH)
 66  ble_enabled.direction = digitalio.Direction.INPUT
 67  ble_enabled.pull = digitalio.Pull.UP
 68  
 69  pixels = neopixel.NeoPixel(board.NEOPIXEL, 10, brightness=0.5)
 70  # Use default HID descriptor
 71  hid = HIDService()
 72  device_info = DeviceInfoService(
 73      software_revision=adafruit_ble.__version__, manufacturer="Adafruit Industries"
 74  )
 75  advertisement = ProvideServicesAdvertisement(hid)
 76  advertisement.appearance = 961
 77  scan_response = Advertisement()
 78  
 79  ble = adafruit_ble.BLERadio()
 80  if ble.connected:
 81      for c in ble.connections:
 82          c.disconnect()
 83  
 84  if ble_enabled.value:
 85      print("advertising")
 86      ble.start_advertising(advertisement, scan_response)
 87  
 88  k = Keyboard(hid.devices)
 89  kl = KeyboardLayoutUS(k)
 90  
 91  wave_file = open("jeopardy.wav", "rb")
 92  wave = WaveFile(wave_file)
 93  audio = AudioOut(board.SPEAKER)
 94  
 95  while True:
 96      if ble_enabled.value:
 97          while not ble.connected:
 98              pass
 99          if ble.connected:
100              print("Connected")
101              led.value = True
102              time.sleep(0.1)
103              led.value = False
104              time.sleep(0.1)
105              led.value = True
106              time.sleep(0.1)
107              led.value = False
108  
109      while ble.connected or not ble_enabled.value:
110          if not central.value:
111              led.value = True
112              print("Running")
113              while True:
114                  i = random.randint(0, upper)
115                  if not buttons[i].value:
116                      break
117  
118              audio.play(wave)
119              if i == 0:
120                  print("Button 1")
121                  pixels.fill((0, 0, 255))
122                  if ble_enabled.value:
123                      kl.write("Button 1")
124              elif i == 1:
125                  print("Button 2")
126                  pixels.fill((0, 255, 0))
127                  if ble_enabled.value:
128                      kl.write("Button 2")
129              elif i == 2:
130                  print("Button 3")
131                  pixels.fill((255, 255, 255))
132                  if ble_enabled.value:
133                      kl.write("Button 3")
134  
135              if not ble_enabled.value:
136                  print(
137                      "BLE HID has been disabled, slide the slide switch to the left to re-enable"
138                  )
139  
140              print("Finished")
141              led.value = False
142  
143              while central.value:
144                  pass
145  
146              print("reset")
147              pixels.fill((0, 0, 0))
148              led.value = True
149              time.sleep(0.5)
150              led.value = False
151              print("Ready")
152          if ble_enabled.value:
153              if not ble.connected:
154                  break
155      else:
156          continue
157      break