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from __future__ import annotations
import displayio
from adafruit_ticks import ticks_ms
from adafruit_midi.note_on import NoteOn
from adafruit_midi.note_off import NoteOff
from adafruit_display_text import label
from .util import FONT_10, led_map
from .i2c import i2c_encode
led_map = led_map[:]
led_map.extend([1, 0, None, None, 2, 3])
try:
import audiomixer
import synthio
except:
synthio = None
class Keyboard:
matrix: Matrix | None
pixels: NeoPixel | None
display: Display | None
midi_usb: MIDI | None
midi_trs: MIDI | None
audio_out: PWMAudioOut | None
def __init__(self, board):
try:
self.matrix = board.create_matrix(self)
except Exception as e:
print("Error bringing up matrix:", e)
self.matrix = None
try:
self.pixels = board.create_pixels(self, auto_write=False)
except Exception as e:
print("Error bringing up pixels:", e)
self.pixels = None
try:
displayio.release_displays()
self.display = board.create_display(
self, width=128, height=32, auto_refresh=False
)
self.group = displayio.Group()
self.label = label.Label(
FONT_10,
text="Hello World",
color=0xFFFFFF,
anchor_point=(0, 0),
anchored_position=(0, 0),
)
self.group.append(self.label)
self.display.root_group = self.group
self.display.refresh()
except Exception as e:
print("Error bringing up display:", e)
self.display = None
try:
self.midi_usb = board.create_midi_usb(self)
except Exception as e:
print("Error bringing up midi_usb:", e)
self.midi_usb = None
try:
self.midi_trs = board.create_midi_trs(self)
self.midi_trs.out_channel = 0
except Exception as e:
print("Error bringing up midi_trs:", e)
self.midi_trs = None
try:
self.i2c = board.create_i2c(board, frequency=1000000, timeout=1000)
self.i2c.try_lock()
except Exception as e:
print("Error bringing up i2c:", e)
self.i2c = None
try:
self.audio_out = board.create_audio_out(self)
self.synth = synthio.Synthesizer(sample_rate=41100)
self.mixer = audiomixer.Mixer(
sample_rate=41100, buffer_size=5120, channel_count=1
)
self.filter = self.synth.low_pass_filter(2000, 0.8)
self.audio_out.play(self.mixer)
self.mixer.voice[0].play(self.synth)
self.mixer.voice[0].level = (30 * 30) / 10000
except Exception as e:
print("Error bringing up synth:", e)
self.synth = None
self.cycle = 0
self.pressed = {}
for i, l in enumerate(led_map):
self.pressed[i] = 0
self.notes = {}
def broadcast(self, msg: MIDIMessage):
if self.midi_usb:
self.midi_usb.send(msg)
if self.midi_trs:
self.midi_trs.send(msg)
def tick(self):
self.cycle = (self.cycle + 1) % 1000
if self.cycle < 300:
base = 0x660000
elif self.cycle < 600:
base = 0x006600
elif self.cycle < 900:
base = 0x000066
else:
base = 0x666666
for i, pressed in self.matrix.scan_for_changes():
pitch = 36 + i
if pressed:
self.broadcast(NoteOn(pitch, 127))
self.pressed[i] |= 0xFF0000
else:
self.broadcast(NoteOff(pitch, 127))
self.pressed[i] &= ~0xFF0000
if self.i2c:
msg = i2c_encode(32 + i, pressed)
try:
self.i2c.writeto(0x33, bytes([msg]))
except OSError:
pass
if self.synth:
if pressed:
note = synthio.Note(synthio.midi_to_hz(pitch), filter=self.filter)
self.notes[i] = note
self.synth.press(note)
elif note := self.notes.pop(i, None):
self.synth.release(note)
if self.pixels:
for i, l in enumerate(led_map):
if l is None:
continue
self.pixels[l] = self.pressed[i] | base
self.pixels.show()
if self.display:
self.display.refresh()
def run(self):
while True:
self.tick()
|
