https://github.com/EMATech/micropython-midi

A midi implementation example for micropython.
https://github.com/EMATech/micropython-midi

Last synced: 3 months ago
JSON representation

A midi implementation example for micropython.

• Host: GitHub
• URL: https://github.com/EMATech/micropython-midi
• Owner: EMATech
• License: gpl-3.0
• Fork: true (cjbarnes18/micropython-midi)
• Created: 2016-06-18T16:32:00.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2014-10-01T17:53:30.000Z (over 10 years ago)
• Last Synced: 2024-03-26T17:28:30.832Z (10 months ago)
• Language: Python
• Size: 152 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst
  • License: LICENSE

Awesome Lists containing this project

• awesome-micropython - micropython-midi - A MIDI implementation example for MicroPython. (Libraries / Audio)
• trackawesomelist - micropython-midi (⭐0) - A MIDI implementation example for MicroPython. (Recently Updated / [Oct 12, 2024](/content/2024/10/12/README.md))

README

        
=====================

Midi for Micro Python

=====================

There are 2 examples of midi for Micro Python in this repository.

Simple Example

==============

This is a simple midi example which uses the switch to trigger a

sequence of notes.

Usage

-----

in boot.py

::

    import midi_switch

on your host run ttymidi (see below)

midi module

==========

This contains a Controller class that implements a simple abstraction

and serves as documentation of some of the standard midi protocol.

Usage

-----

Add the following to main.py and import main in boot.py

::

    import midi

    

    serial = pyb.USB_VCP()

    

    

    def midi_controller():

        """Use the accelerometer and the switch as a midi control."""

        instrument1 = midi.Controller(serial, channel=1)

        accel = pyb.Accel()

        switch = pyb.Switch()

        while 1:

            while not switch():

                pyb.delay(10)

            note = accel.x()

            velocity = accel.y()

            instrument1.note_on(note + 65, velocity + 65)

            while switch():

                pyb.delay(50)

            instrument1.note_off(note + 65)

In the console run the function

::

    >>> midi_controller()

then disconnect the console and run ttymidi

::

    $ ttymidi -s /dev/ttyACM0 -n MicroPythonMidi -b 9600 -v

The -v option will output the midi commands to the console.

To hear sound, connect the MicroPythonMidi output to your sound

application input using a patchbay tool such as patchage, then press the button.

The orientation of the board will control the pitch and the volume

of the note played.

ttymidi

=======

ttymidi a tool to link a serial input to alsa as a midi I/O device.

It is available from https://github.com/cjbarnes18/ttymidi.git

Once compiled, to get it to communicate with Micro Python use the

following options.

::

    $ ttymidi -s /dev/ttyACM0 -n MicroPythonMidi -b 9600

Then use standard midi tools.

I generally use *patchage* to manage the connections,

and *Qsynth* is a good synthesizer to get started with.