# MicroPython USB MIDI example
#
# This example demonstrates creating a custom MIDI device.
#
# This example uses the usb-device-midi package for the MIDIInterface class.
# This can be installed with:
#
# mpremote mip install usb-device-midi
#
# MIT license; Copyright (c) 2023-2024 Angus Gratton
import usb.device
from usb.device.midi import MIDIInterface
import time


class MIDIExample(MIDIInterface):
    def on_note_on(self, channel, pitch, vel):
        print(f"RX Note On channel {channel} pitch {pitch} velocity {vel}")

    def on_note_off(self, channel, pitch, vel):
        print(f"RX Note Off channel {channel} pitch {pitch} velocity {vel}")

    def on_control_change(self, channel, controller, value):
        print(f"RX Control channel {channel} controller {controller} value {value}")


m = MIDIExample()
# Remove builtin_driver=True if you don't want the MicroPython serial REPL available.
usb.device.get().init(m, builtin_driver=True)

print("Waiting for USB host to configure the interface...")

while not m.is_open():
    time.sleep_ms(100)

print("Starting MIDI loop...")

control_val = 0
channel = 0

while m.is_open():
    time.sleep(1)
    m.note_on(channel, 60)
    time.sleep(0.5)
    m.note_off(channel, 60)
    time.sleep(1)
    m.control_change(channel, 64, control_val)
    control_val += 1
    if control_val == 0x7F:
        control_val = 0
    time.sleep(1)