Introduction
============
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:target: https://docs.circuitpython.org/projects/midi/en/latest/
:alt: Documentation Status
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:target: https://adafru.it/discord
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:target: https://github.com/adafruit/Adafruit_CircuitPython_MIDI/actions/
:alt: Build Status
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:target: https://github.com/astral-sh/ruff
:alt: Code Style: Ruff
A CircuitPython helper for encoding/decoding MIDI packets over a MIDI or UART connection.
Dependencies
=============
This driver depends on:
* `Adafruit CircuitPython <https://github.com/adafruit/circuitpython>`_
Please ensure all dependencies are available on the CircuitPython filesystem.
This is easily achieved by downloading
`the Adafruit library and driver bundle <https://github.com/adafruit/Adafruit_CircuitPython_Bundle>`_.
Installing from PyPI
--------------------
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
PyPI <https://pypi.org/project/adafruit-circuitpython-midi/>`_. To install for current user:
.. code-block:: shell
pip3 install adafruit-circuitpython-midi
To install system-wide (this may be required in some cases):
.. code-block:: shell
sudo pip3 install adafruit-circuitpython-midi
To install in a virtual environment in your current project:
.. code-block:: shell
mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-midi
Usage Example
=============
.. code-block:: python
import time
import random
import usb_midi
import adafruit_midi
from adafruit_midi.note_on import NoteOn
from adafruit_midi.note_off import NoteOff
from adafruit_midi.pitch_bend import PitchBend
from adafruit_midi.control_change import ControlChange
midi = adafruit_midi.MIDI(midi_out=usb_midi.ports[1], out_channel=0)
print("Midi test")
print("Default output MIDI channel:", midi.out_channel + 1)
while True:
midi.send(NoteOn(44, 120)) # G sharp 2nd octave
time.sleep(0.25)
a_pitch_bend = PitchBend(random.randint(0, 16383))
midi.send(a_pitch_bend)
time.sleep(0.25)
midi.send([NoteOff("G#2", 120),
ControlChange(3, 44)])
time.sleep(0.5)
Documentation
=============
API documentation for this library can be found on `Read the Docs <https://docs.circuitpython.org/projects/midi/en/latest/>`_.
For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.
Contributing
============
Contributions are welcome! Please read our `Code of Conduct
<https://github.com/adafruit/Adafruit_CircuitPython_MIDI/blob/main/CODE_OF_CONDUCT.md>`_
before contributing to help this project stay welcoming.
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