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Content import os, machine, display, keypad, audio, random, virtualtimers as vt col_on = 0x444444 col_off = 0x000000 col_error = 0x990000 # min. interval between re-presses pI = 200 try: directory = '/'.join(__file__.split('/')[:-1]) except: directory = '/apps/bubblewrap' print('directory: ', directory) def playbackFinished(): if len(playing) > 0: key = playing.pop(0) x, y = key % 4, int(key / 4) display.drawPixel(x, y, col_on) display.flush() return 0 def on_key(key_index, pressed): x, y = key_index % 4, int(key_index / 4) if pressed and key_index not in playing: display.drawPixel(x, y, col_off) display.flush() sample = random.randint(0, numSamples-1) try: print('Playing %s' % samples[sample]) player = audio.play(samples[sample]) except BaseException as e: player = None import sys, system sys.print_exception(e) system.crashedWarning() if player is None or player < 1: display.drawPixel(x, y, col_error) display.flush() else: playing.append(key_index) vt.new(pI, playbackFinished) try: samples = [filename for filename in os.listfiles(directory, return_full=True) if '/._' not in filename and (filename.lower().endswith('mp3'))] except: samples = [] print('Samples: %s' % str(samples)) numSamples = len(samples) playing = [] vt.begin() keypad.add_handler(on_key) display.drawFill(col_on) display.flush()