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Content import display, keypad, touchpads, machine, appconfig, audio, sndmixer vol = machine.nvs_getint('system', 'volume') if vol == None: vol = 128; on = 0x0000FF off = 0x000000 sndmixer.begin(32) channels = [None] * 32 button = [[697,1209], [697,1336], [697,1477], [697,1633], [770,1209], [770,1336], [770,1477], [770,1633], [852,1209], [852,1336], [852,1477], [852,1633], [941,1209], [941,1336], [941,1477], [941,1633]] def on_key(key_index, pressed): x, y = key_index % 4, int(key_index / 4) if pressed: frequency1 = int(button[key_index][0]) frequency2 = int(button[key_index][1]) synth1 = sndmixer.synth() channels[key_index] = synth1 synth2 = sndmixer.synth() channels[key_index + 16] = synth2 sndmixer.volume(synth1, vol) sndmixer.waveform(synth1, 0) sndmixer.volume(synth2, vol) sndmixer.waveform(synth2, 0) sndmixer.freq(synth1, frequency1) sndmixer.play(synth1) sndmixer.freq(synth2, frequency2) sndmixer.play(synth2) display.drawPixel(x, y, on) display.flush() else: if channels[key_index] is not None: sndmixer.stop(channels[key_index]) sndmixer.stop(channels[key_index + 16]) display.drawPixel(x, y, 0x00) display.flush() keypad.add_handler(on_key) # volume control is_down = False; def vol_up(is_pressed): global vol if is_pressed: vol += 32 if vol > 255: vol = 255 setvolume(vol) def vol_down(is_pressed): global vol if is_pressed: vol -= 32 if vol < 0: vol = 0 setvolume(vol) def setvolume(volume): print(volume) for index in audio.handles.keys(): sndmixer.volume(index, volume) touchpads.on(touchpads.RIGHT, vol_up) touchpads.on(touchpads.LEFT, vol_down)