keyboard.py

   1 import pygame
   2 import RPi.GPIO as gpio
   3 import logging
   4
   5 logger = logging.getLogger(__name__)
   6 loggerFileHandler = logging.FileHandler('keyboard.log')
   7 loggerFileHandlerFormatter = logging.Formatter('%(asctime)s %(levelname)-8s  %(message)s')
   8 loggerFileHandler.setFormatter(loggerFileHandlerFormatter)
   9 logger.addHandler(loggerFileHandler)
  10 logger.setLevel(logging.WARNING)
  11 logger.setLevel(logging.INFO)
  12
  13 gpio.setmode(gpio.BCM)
  14 if gpio.RPI_REVISION == 1:
  15     pins = [22, 21, 17, 4, 25, 24, 23, 18]
  16 else:
  17     pins = [22, 27, 17, 4, 25, 24, 23, 18]
  18 # pins = [25]
  19
  20 notes = ['sounds/keyboard-fsharp-low.wav',
  21          'sounds/keyboard-g.wav',
  22          'sounds/keyboard-gsharp.wav',
  23          'sounds/keyboard-a.wav',
  24          'sounds/keyboard-asharp.wav',
  25          'sounds/keyboard-b.wav',
  26          'sounds/keyboard-c.wav',
  27          'sounds/keyboard-csharp.wav',
  28          'sounds/keyboard-d.wav',
  29          'sounds/keyboard-dsharp.wav',
  30          'sounds/keyboard-e.wav',
  31          'sounds/keyboard-f.wav',
  32          'sounds/keyboard-fsharp-high.wav']
  33
  34 notes = ['sounds/keyboard-g.wav',
  35          'sounds/keyboard-a.wav',
  36          'sounds/keyboard-b.wav',
  37          'sounds/keyboard-c.wav',
  38          'sounds/keyboard-d.wav',
  39          'sounds/keyboard-e.wav',
  40          'sounds/keyboard-f.wav',
  41          'sounds/keyboard-g-high.wav']
  42
  43
  44 pygame.mixer.init()
  45
  46 sounds = {}
  47 for pin, wav in zip(pins, notes):
  48     sounds[pin] = pygame.mixer.Sound(wav)
  49
  50 def handle_sound(pin):
  51     if gpio.input(pin):
  52         sounds[pin].play()
  53         logger.info("Started playing {0}".format(pins.index(pin)))
  54     else:
  55         sounds[pin].stop()
  56         logger.info("Stopped playing {0}".format(pins.index(pin)))
  57
  58 for pin in pins:
  59     gpio.setup(pin, gpio.IN)
  60     gpio.add_event_detect(pin, gpio.BOTH, callback=handle_sound, bouncetime=50)
  61
  62 while True:
  63     pass