first commit Live launcher code
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John Park
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Macropad_Ableton/code.py
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Macropad_Ableton/code.py
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# SPDX-FileCopyrightText: 2021 John Park for Adafruit Industries
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# SPDX-License-Identifier: MIT
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# Ableton Live Macropad Launcher
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# In Ableton, choose "Launchpad Mini Mk3" as controller with MacroPad 2040 as in and out
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import board
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from digitalio import DigitalInOut, Pull
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import keypad
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import displayio
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import terminalio
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import neopixel
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import rotaryio
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from adafruit_simplemath import constrain
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from adafruit_display_text import label
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from adafruit_debouncer import Debouncer
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import usb_midi
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import adafruit_midi
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from adafruit_midi.control_change import ControlChange
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from adafruit_midi.note_off import NoteOff
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from adafruit_midi.note_on import NoteOn
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from adafruit_midi.midi_message import MIDIUnknownEvent
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TITLE_TEXT = "Live Launcher 2040"
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print(TITLE_TEXT)
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TRACK_NAMES = ["DRUM", "BASS", "SYNTH"] # Customize these
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LIVE_CC_NUMBER = 74 # CC number to send w encoder
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FADER_TEXT = "cutoff" # change for intended CC name
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midi = adafruit_midi.MIDI(
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midi_in=usb_midi.ports[0],
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in_channel=(0, 1, 2),
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midi_out=usb_midi.ports[1],
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out_channel=0
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)
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# ---Specify key pins---
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key_pins = (
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board.KEY1, board.KEY2, board.KEY3,
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board.KEY4, board.KEY5, board.KEY6,
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board.KEY7, board.KEY8, board.KEY9,
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board.KEY10, board.KEY11, board.KEY12
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)
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# ---Create keypad object---
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keys = keypad.Keys(key_pins, value_when_pressed=False, pull=True)
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# ---Official Launchpad colors---
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LP_COLORS = (
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0x000000, 0x101010, 0x202020, 0x3f3f3f, 0x3f0f0f, 0x3f0000, 0x200000, 0x100000,
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0x3f2e1a, 0x3f0f00, 0x200800, 0x100400, 0x3f2b0b, 0x3f3f00, 0x202000, 0x101000,
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0x213f0c, 0x143f00, 0x0a2000, 0x051000, 0x123f12, 0x003f00, 0x002000, 0x001000,
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0x123f17, 0x003f06, 0x002003, 0x001001, 0x123f16, 0x003f15, 0x00200b, 0x001006,
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0x123f2d, 0x003f25, 0x002012, 0x001009, 0x12303f, 0x00293f, 0x001520, 0x000b10,
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0x12213f, 0x00153f, 0x000b20, 0x000610, 0x0b093f, 0x00003f, 0x000020, 0x000010,
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0x1a0d3e, 0x0b003f, 0x060020, 0x030010, 0x3f0f3f, 0x3f003f, 0x200020, 0x100010,
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0x3f101b, 0x3f0014, 0x20000a, 0x100005, 0x3f0300, 0x250d00, 0x1d1400, 0x080d01,
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0x000e00, 0x001206, 0x00051b, 0x00003f, 0x001113, 0x040032, 0x1f1f1f, 0x070707,
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0x3f0000, 0x2e3f0b, 0x2b3a01, 0x183f02, 0x032200, 0x003f17, 0x00293f, 0x000a3f,
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0x06003f, 0x16003f, 0x2b061e, 0x0a0400, 0x3f0c00, 0x213701, 0x1c3f05, 0x003f00,
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0x0e3f09, 0x153f1b, 0x0d3f32, 0x16223f, 0x0c1430, 0x1a1439, 0x34073f, 0x3f0016,
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0x3f1100, 0x2d2900, 0x233f00, 0x201601, 0x0e0a00, 0x001203, 0x031308, 0x05050a,
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0x050716, 0x190e06, 0x200000, 0x36100a, 0x351204, 0x3f2f09, 0x27370b, 0x192c03,
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0x05050b, 0x36341a, 0x1f3a22, 0x26253f, 0x23193f, 0x0f0f0f, 0x1c1c1c, 0x373f3f,
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0x270000, 0x0d0000, 0x063300, 0x011000, 0x2d2b00, 0x0f0c00, 0x2c1400, 0x120500,
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)
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LP_PADS = {
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81: 0, 82: 1, 83: 2,
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71: 3, 72: 4, 73: 5,
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61: 6, 62: 7, 63: 8,
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51: 9, 52: 10, 53: 11
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}
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LIVE_NOTES = [81, 82, 83, 71, 72, 73, 61, 62, 63, 51, 52, 53]
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CC_OFFSET = 20
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modifier = False # use to add encoder switch modifier to keys for clip mute
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MODIFIER_NOTES = [41, 42, 43, 41, 42, 43, 41, 42, 43, 41, 42, 43] # blank row in Live
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# ---Encoder setup---
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encoder = rotaryio.IncrementalEncoder(board.ENCODER_B, board.ENCODER_A)
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sw = DigitalInOut(board.ENCODER_SWITCH)
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sw.switch_to_input(pull=Pull.UP)
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switch = Debouncer(sw)
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last_position = 0 # encoder position state
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# ---NeoPixel setup---
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BRIGHT = 0.125
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DIM = 0.0625
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pixels = neopixel.NeoPixel(board.NEOPIXEL, 12, brightness=BRIGHT, auto_write=False)
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# ---Display setup---
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display = board.DISPLAY
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screen = displayio.Group(max_size=12)
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display.show(screen)
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WIDTH = 128
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HEIGHT = 64
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FONT = terminalio.FONT
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# Draw a title label
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title = TITLE_TEXT
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title_area = label.Label(FONT, text=title, color=0xFFFFFF,x=6, y=3)
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screen.append(title_area)
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# --- create display strings and positions
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x1 = 5
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x2 = 35
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x3 = 65
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y1 = 17
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y2 = 27
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y3 = 37
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y4 = 47
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y5 = 57
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# ---Push knob text setup
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push_text_area = label.Label(FONT, text="[o]", color=0xffffff, x=WIDTH-22, y=y2)
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screen.append(push_text_area)
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# ---CC knob text setup
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fader_text_area = label.Label(FONT, text=FADER_TEXT, color=0xffffff, x=WIDTH - 42, y=y4)
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screen.append(fader_text_area)
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# --- cc value display
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cc_val_text = str(CC_OFFSET)
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cc_val_text_area = label.Label(FONT, text=cc_val_text, color=0xffffff, x=WIDTH - 20, y=y5)
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screen.append(cc_val_text_area)
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label_data = (
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# text, x, y
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(TRACK_NAMES[0], x1, y1), (TRACK_NAMES[1], x2, y1), (TRACK_NAMES[2], x3, y1),
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(".", x1, y2), (".", x2, y2), (".", x3, y2),
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(".", x1, y3), (".", x2, y3), (".", x3, y3),
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(".", x1, y4), (".", x2, y4), (".", x3, y4),
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(".", x1, y5), (".", x2, y5), (".", x3, y5)
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)
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labels = []
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for data in label_data:
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text, x, y = data
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label_area = label.Label(FONT, text=text, color=0xffffff)
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group = displayio.Group(max_size=4, x=x, y=y)
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group.append(label_area)
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screen.append(group)
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labels.append(label_area) # these can be individually addressed later
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num = 1
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while True:
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msg_in = midi.receive()
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if isinstance(msg_in, NoteOn) and msg_in.velocity != 0:
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print(
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"received NoteOn",
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"from channel",
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msg_in.channel + 1,
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"MIDI note",
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msg_in.note,
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"velocity",
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msg_in.velocity,
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"\n"
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)
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# send neopixel lightup code to key, text to display
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if msg_in.note < 84 and msg_in.note > 50:
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pixels[LP_PADS[msg_in.note]] = LP_COLORS[msg_in.velocity]
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pixels.show()
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if msg_in.velocity == 21: # active pad is indicated by Live as vel 21
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labels[LP_PADS[msg_in.note]+3].text = "o"
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else:
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labels[LP_PADS[msg_in.note]+3].text = "."
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elif (
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isinstance(msg_in, NoteOff)
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or isinstance(msg_in, NoteOn)
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and msg_in.velocity == 0
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):
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print(
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"received NoteOff",
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"from channel",
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msg_in.channel + 1,
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"MIDI note",
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msg_in.note,
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"velocity",
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msg_in.velocity,
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"\n"
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)
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elif isinstance(msg_in, ControlChange):
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print(
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"received CC",
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"from channel",
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msg_in.channel + 1,
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"controller",
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msg_in.control,
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"value",
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msg_in.value,
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"\n"
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)
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elif isinstance(msg_in, MIDIUnknownEvent):
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# Message are only known if they are imported
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print("Unknown MIDI event status ", msg_in.status)
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elif msg_in is not None:
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midi.send(msg_in)
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event = keys.events.get() # check for keypad events
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if not event: # Event is None; no keypad event happened, do other stuff
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position = encoder.position # store encoder position state
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cc_position = constrain((position + CC_OFFSET), 0, 127) # lock to cc range
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if last_position is None or position != last_position:
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if position < last_position:
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midi.send(ControlChange(LIVE_CC_NUMBER, cc_position))
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print("CC", cc_position)
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cc_val_text_area.text = str(cc_position)
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elif position > last_position:
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midi.send(ControlChange(LIVE_CC_NUMBER, cc_position))
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print("CC", cc_position)
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cc_val_text_area.text = str(cc_position)
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last_position = position
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switch.update() # check the encoder switch w debouncer
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if switch.fell:
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print("Mod")
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push_text_area.text = "[.]"
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modifier = True
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pixels.brightness = DIM
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pixels.show()
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if switch.rose:
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modifier = False
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push_text_area.text = "[o]"
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pixels.brightness = BRIGHT
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pixels.show()
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continue
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num = event.key_number
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if event.pressed and not modifier:
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midi.send(NoteOn(LIVE_NOTES[num], 127))
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print("\nsent note", LIVE_NOTES[num], "\n")
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if event.pressed and modifier:
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midi.send(NoteOn(MODIFIER_NOTES[num], 127))
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if event.released and not modifier:
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midi.send(NoteOff(LIVE_NOTES[num], 0))
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if event.released and modifier:
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midi.send(NoteOff(MODIFIER_NOTES[num], 0))
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pixels.show()
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