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Content import system, display, time, keypad, touchpads, virtualtimers, appconfig, sndmixer, wifi, audio, ugTTS settings = appconfig.get('blink', {'pattern': [2,0,0,2, 0,2,2,0, 0,2,2,0, 2,0,0,2], 'interval': 1000, 'color_on': 0xFF0000, 'color_off': 0x004000, 'speech': True}) pattern = settings['pattern'] interval = settings['interval'] counter = 0 blinking = True connected = False def msg(text): func = ugTTS.speak if connected else print func(text) def interval_down(is_pressed): global interval if is_pressed: interval = interval // 2 if interval >= 100 else 50 msg("Interval is now {}".format(interval)) def interval_up(is_pressed): global interval if is_pressed: interval = interval * 2 if interval <= 5000 else 10000 msg("Interval is now {}".format(interval)) def stop_blinking(is_pressed): global blinking if is_pressed: blinking = False msg("Blinking is now {}".format(blinking)) def continue_blinking(is_pressed): global blinking if is_pressed: blinking = True msg("Blinking is now {}".format(blinking)) def goodbye(is_pressed): if is_pressed: msg("Well kids, that concludes our demo for today!") time.sleep(5) system.launcher() def sound_off(): sndmixer.volume(synth,0) return 0 def on_key(key_index, is_pressed): global pattern if is_pressed: x,y = keypad.index_to_coords(key_index) pattern[x + y * 4] = (pattern[x + y * 4] + 1) % 4 if pattern[x + y * 4] == 0: display.drawPixel(x,y,0x400000) tone = 396 elif pattern[x + y * 4] == 1: display.drawPixel(x,y,0x004000) tone = 440 elif pattern[x + y * 4] == 2: display.drawPixel(x,y,0x004040) tone = 495 elif pattern[x + y * 4] == 3: display.drawPixel(x,y,0x404000) tone = 528 display.flush() sndmixer.freq(synth, tone) sndmixer.play(synth) sndmixer.volume(synth, 64) virtualtimers.new(100, sound_off, False) def draw(): global counter if blinking: counter += 1 for y in range(4): for x in range(4): color = settings['color_off'] if pattern[x + y * 4] == 1: color = settings['color_on'] elif pattern[x + y * 4] == 2: if counter % 2 == 0: color = settings['color_off'] else: color = settings['color_on'] elif pattern[x + y * 4] == 3: if counter % 2 == 0: color = settings['color_on'] else: color = settings['color_off'] display.drawPixel(x,y,color) display.flush() return interval # initiate WiFi connection for the Text-to-Speach interface if settings['speech']: if not wifi.status(): print("Connecting to WiFi, please wait.") audio.play('/cache/system/wifi_connecting.mp3') wifi.connect() if not wifi.wait(): audio.play('/cache/system/wifi_failed.mp3') print("Unable to connect to the WiFi network.") else: connected = True audio.play('/cache/system/wifi_connected.mp3') print("Connected to the WiFi network.") sndmixer.begin(1) synth = sndmixer.synth() sndmixer.waveform(synth, 0) sndmixer.volume(synth, 0) # Adding callbacks virtualtimers.begin(50) virtualtimers.new(0, draw, False) keypad.add_handler(on_key) touchpads.on(touchpads.RIGHT, interval_up) touchpads.on(touchpads.LEFT, interval_down) touchpads.on(touchpads.CANCEL, stop_blinking) touchpads.on(touchpads.OK, continue_blinking) touchpads.on(touchpads.HOME, goodbye)