97 lines
3.2 KiB
Python
97 lines
3.2 KiB
Python
# SPDX-FileCopyrightText: 2025 Liz Clark for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import os
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from random import randint
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import board
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import usb_midi
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import keypad
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from adafruit_mcp230xx.mcp23017 import MCP23017
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import adafruit_midi
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from adafruit_midi.note_on import NoteOn
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from adafruit_midi.note_off import NoteOff
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import adafruit_midi_parser
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# music_box plays back MIDI files on CP drive
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# set to false for live MIDI over USB control
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music_box = True
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# define the notes that correspond to each solenoid
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notes = [48, 50, 52, 53, 55, 57, 59, 60]
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key = keypad.Keys((board.BUTTON,), value_when_pressed=False, pull=True)
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i2c = board.STEMMA_I2C()
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mcp = MCP23017(i2c)
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noids = []
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for i in range(8):
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noid = mcp.get_pin(i)
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noid.switch_to_output(value=False)
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noids.append(noid)
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# pylint: disable=used-before-assignment, unused-argument, global-statement, no-self-use
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if not music_box:
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midi = adafruit_midi.MIDI(
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midi_in=usb_midi.ports[0], in_channel=0, midi_out=usb_midi.ports[1], out_channel=0
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)
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else:
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midi_files = []
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for filename in os.listdir('/'):
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if filename.lower().endswith('.mid') and not filename.startswith('.'):
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midi_files.append("/"+filename)
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print(midi_files)
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class Custom_Player(adafruit_midi_parser.MIDIPlayer):
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def on_note_on(self, note, velocity, channel): # noqa: PLR6301
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for z in range(len(notes)):
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if notes[z] == note:
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print(f"Playing note: {note}")
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noids[z].value = True
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def on_note_off(self, note, velocity, channel): # noqa: PLR6301
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for z in range(len(notes)):
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if notes[z] == note:
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noids[z].value = False
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def on_end_of_track(self, track): # noqa: PLR6301
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print(f"End of track {track}")
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for z in range(8):
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noids[z].value = False
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def on_playback_complete(self): # noqa: PLR6301
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global now_playing
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now_playing = False
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for z in range(8):
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noids[z].value = False
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parser = adafruit_midi_parser.MIDIParser()
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parser.parse(midi_files[randint(0, (len(midi_files) - 1))])
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player = Custom_Player(parser)
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new_file = False
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now_playing = False
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while True:
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if music_box:
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event = key.events.get()
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if event:
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if event.pressed:
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now_playing = not now_playing
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if now_playing:
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new_file = True
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if new_file:
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parser.parse(midi_files[randint(0, (len(midi_files) - 1))])
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print(f"Successfully parsed! Found {len(parser.events)} events.")
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print(f"BPM: {parser.bpm:.1f}")
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print(f"Note Count: {parser.note_count}")
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new_file = False
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if now_playing:
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player.play(loop=False)
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else:
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msg = midi.receive()
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if msg is not None:
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for i in range(8):
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noid_output = noids[i]
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notes_played = notes[i]
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if isinstance(msg, NoteOn) and msg.note == notes_played:
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noid_output.value = True
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elif isinstance(msg, NoteOff) and msg.note == notes_played:
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noid_output.value = False
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