linnstrument_lights.py

# You can set any of LinnStrument's note pad to any color by sending
# LinnStrument a series of three MIDI Control Change messages:
#
# 1) CC20: Column number of note pad to change (control key column is 0, left
#    play column is 1, right play column is 25)
# 2) CC21: Row number of note pad to change (bottom row is 0, top is 7)
# 3) CC22: Color to change it to (0=as set in Note Lights settings,
#    1=red, 2=yellow, 3=green, 4=cyan, 5=blue,
#    6=magenta, 7=off, 8=white, 9=orange, 10=lime and 11=pink).
#
# First send CC20 and CC21 to select the column and row to be lit,
# then send CC22 to light it.
from enum import Enum
from random import randrange
import sys

import mido
from mido import Message


class Color(Enum):
    SETTINGS = 0
    RED = 1
    YELLOW = 2
    GREEN = 3
    CYAN = 4
    BLUE = 5
    MAGENTA = 6
    OFF = 7
    WHITE = 8
    ORANGE = 9
    LIME = 10
    PINK = 11


if len(sys.argv) < 2:
    outputs = mido.get_output_names()
    print('Usage: SCRIPT output_device')
    print('Possible devices:')
    for x in outputs:
        print(x)
    sys.exit(1)

outp_name = sys.argv[1]
outp = mido.open_output(outp_name)

note_color_str = [
    'RED', 'OFF', 'ORANGE', 'YELLOW', 'OFF', 'GREEN', 'OFF', 'BLUE', 'CYAN', 'OFF', 'MAGENTA', 'OFF',
]
note_color = [Color[c_str] for c_str in note_color_str]


def show_led(column, row, color):
    ccs = [
        (20, column+1),
        (21, 7-row),
        (22, color),
    ]
    for cc_num, cc_val in ccs:
        cc = Message('control_change', channel=0, control=cc_num, value=cc_val, time=0)
        outp.send(cc)


pos = 5
rowpos = 5

for row in range(8):
    pos = rowpos
    for column in range(16):
        # color = 7
        # while color == 7:
        #     color = randrange(1, 12)
        # show_led(column, row, color)
        color = note_color[pos].value
        print('{}\t{}\t{}'.format(row, column, note_color[pos]))
        pos = (pos + 1) % 12
        show_led(column, row, color)
    rowpos = (rowpos + 7) % 12