Библиотека midi для ардуино

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Arduino и MIDI

Некоторые музыканты, которые разбираются в электронике, или электронщики, которым нравится музицировать, хотели бы подключить своё MIDI-устройство к Arduino, но не знают как это правильно сделать. Данный проект поможет разобраться в этом вопросе.

Для начала немного разберемся, что такое MIDI. MIDI расшифровывается как Musical Instrument Digital Interface или по-русски цифровой интерфейс музыкальных инструментов. В передаваемом коде этого интерфейса могут быть зашифрованы параметры громкости, тональности, темпа и других характеристик музыкальных инструментов. Данные интерфейса MIDI обычно передаются по пятипрошодным шинам с разъемами круглой формы DIN 41524 также с пятью контактами, как показано будет на схеме, приведенной ниже. Стандартная скорость передачи данных такого последовательного интерфейса составляет 31.25 кбит/с. Передача осуществляется однонаправленно, то есть в связанной интерфейсом MIDI системе музыкальные инструменты, например, синтезаторы могут только передавать данные головному устройству, например, пульту управления звуковым окружением или компьютеру. Следует помнить, что данные интерфейса MIDI представляют собой не оцифрованный звук, а команды и значения, например, ноты, параметры звука и т.п.

Схема подключения Arduino к MIDI-устройствам

Схема, созданная с помощью fritzing, довольно подробно показывает соединения компонентов. Всё здесь подключается достаточно просто и легко. В основе схемы мы видим микросхему оптической гальванической развязки. Эта оптопара нужна для гальванической развязки линии MIDI от схемы Arduino. Без неё можно сжечь вход Arduino. В данном случае была взята оптопара серии 4n35, состоящая из светодиода и фототранзистора, впрочем, вместо нее подойдет любой другой оптрон со схожими характеристиками.

Будьте внимательны при подключении диода, соблюдайте полярность. Данная схема была создана с учетом стандартов и характеристик интерфейса MIDI. Оригина схемы можно найти здесь http://www.midi.org/techspecs/electrispec.php

Код (скетч для Arduino)

Это простой скрипт взаимодействия с MIDI с использованием библиотеки MIDI.h (скрипт MIDI CALLBACK). Он проверяет, поступил ли сигнал (нота) NoteOn и переходит в соответствующую область обработки. В эту область вы можете вставить свой код.

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Библиотека midi для ардуино

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Arduino MIDI Library

This library adds MIDI I/O communications to an Arduino board.

  • New : MIDI over USB, Bluetooth, IP & AppleMIDI (see Transports).
  • New : Active Sensing support
  • Compatible with all Arduino boards (and clones with an AVR processor).
  • Simple and fast way to send and receive every kind of MIDI message (including all System messages, SysEx, Clock, etc..).
  • OMNI input reading (read all channels).
  • Software Thru, with message filtering.
  • Callbacks to handle input messages more easily.
  • Last received message is saved until a new one arrives.
  • Configurable: overridable template-based settings.
  • Create more than one MIDI interface for mergers/splitters applications.
  • Use any serial port, hardware or software.

Use the Arduino Library Manager to install the library.

  1. Read the documentation or watch the awesome video tutorials from Notes & Volts.

USB Migration (4.x to 5.x)

All USB related code has been moved into a separate repository Arduino-USB-MIDI, USB MIDI Device support with MIDIUSB , still using this library to do all the MIDI heavy-lifting.

Migration has been made as easy as possible: only the declaration of the MIDI object has been modified, the rest of your code remains identical.

now becomes in 5.x :

Start with the NoteOnOffEverySec example that is based on the original MidiUSB sketch. Note the only difference is in the declaration.

The USB-MIDI Arduino library depends on this library and the MIDIUSB library.

USB-MIDI uses the latest Arduino IDE depends feature in the library.properties file installing all the dependencies automatically when installing from the IDE.

Other Transport mechanisms

Version 5 of this library, allows for other Transport layers than the original MIDI 1.0 Electrical Specification (hardware serial).

All these Transport layers use this library for all the underlying MIDI work, making it easy to switch transport protocols or making transport protocol bridges.

Differences between Serial & other transports

  • Software Thru is enabled by default on Serial, but not on other transports.

To report a bug, contribute, discuss on usage, or request support, please discuss it here.

You can also contact me on Twitter: @fortysevenfx.

Special thanks to all who have contributed to this open-source project !

You want to help ? Check out the contribution guidelines.

Источник

PaulStoffregen/MIDI

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README.md

Arduino MIDI Library

This library adds MIDI I/O communications to an Arduino board.

  • New : MIDI over USB, Bluetooth, IP & AppleMIDI (see Transports).
  • New : Active Sensing support
  • Compatible with all Arduino boards (and clones with an AVR processor).
  • Simple and fast way to send and receive every kind of MIDI message (including all System messages, SysEx, Clock, etc..).
  • OMNI input reading (read all channels).
  • Software Thru, with message filtering.
  • Callbacks to handle input messages more easily.
  • Last received message is saved until a new one arrives.
  • Configurable: overridable template-based settings.
  • Create more than one MIDI interface for mergers/splitters applications.
  • Use any serial port, hardware or software.

Use the Arduino Library Manager to install the library.

  1. Read the documentation or watch the awesome video tutorials from Notes & Volts.

USB Migration (4.x to 5.x)

All USB related code has been moved into a separate repository Arduino-USB-MIDI, USB MIDI Device support with MIDIUSB , still using this library to do all the MIDI heavy-lifting.

Migration has been made as easy as possible: only the declaration of the MIDI object has been modified, the rest of your code remains identical.

now becomes in 5.x :

Start with the NoteOnOffEverySec example that is based on the original MidiUSB sketch. Note the only difference is in the declaration.

The USB-MIDI Arduino library depends on this library and the MIDIUSB library.

USB-MIDI uses the latest Arduino IDE depends feature in the library.properties file installing all the dependencies automatically when installing from the IDE.

Other Transport mechanisms

Version 5 of this library, allows for other Transport layers than the original MIDI 1.0 Electrical Specification (hardware serial).

All these Transport layers use this library for all the underlying MIDI work, making it easy to switch transport protocols or making transport protocol bridges.

Differences between Serial & other transports

  • Software Thru is enabled by default on Serial, but not on other transports.

To report a bug, contribute, discuss on usage, or simply request support, please create an issue here.

You can also contact me on Twitter: @fortysevenfx.

Special thanks to all who have contributed to this open-source project !

You want to help ? Check out the contribution guidelines.

Источник

arduino-libraries/MIDIUSB

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README.adoc

MIDIUSB Library for Arduino

This library allows an Arduino board with USB capabilities to act as a MIDI instrument over USB. The library is based on PluggableUSB, so is only compatible with Arduino IDE 1.6.6 and newer.

Furthermore, since PluggableUSB only targets boards with native USB capabilities, this library only supports these boards (eg. Leonardo, Micro, Due, Zero and so on)

For more information about this library please visit us at http://www.arduino.cc/en/Reference/MIDIUSB

Test procedure (Linux)

Load the correct driver ( sudo modprobe snd_seq_midi )

Flash the board with MIDIUSB_loop example, then execute aseqdump -l ; the output will be something similar to

Port 20 is the one we’ll use in the following examples.

Start fluidsynth inside a shell with a soundbank

Источник

FortySevenEffects/arduino_midi_library

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README.md

Arduino MIDI Library

This library adds MIDI I/O communications to an Arduino board.

  • New : MIDI over USB, Bluetooth, IP & AppleMIDI (see Transports).
  • New : Active Sensing support
  • Compatible with all Arduino boards (and clones with an AVR processor).
  • Simple and fast way to send and receive every kind of MIDI message (including all System messages, SysEx, Clock, etc..).
  • OMNI input reading (read all channels).
  • Software Thru, with message filtering.
  • Callbacks to handle input messages more easily.
  • Last received message is saved until a new one arrives.
  • Configurable: overridable template-based settings.
  • Create more than one MIDI interface for mergers/splitters applications.
  • Use any serial port, hardware or software.

Use the Arduino Library Manager to install the library.

  1. Read the documentation or watch the awesome video tutorials from Notes & Volts.

USB Migration (4.x to 5.x)

All USB related code has been moved into a separate repository Arduino-USB-MIDI, USB MIDI Device support with MIDIUSB , still using this library to do all the MIDI heavy-lifting.

Migration has been made as easy as possible: only the declaration of the MIDI object has been modified, the rest of your code remains identical.

now becomes in 5.x :

Start with the NoteOnOffEverySec example that is based on the original MidiUSB sketch. Note the only difference is in the declaration.

The USB-MIDI Arduino library depends on this library and the MIDIUSB library.

USB-MIDI uses the latest Arduino IDE depends feature in the library.properties file installing all the dependencies automatically when installing from the IDE.

Other Transport mechanisms

Version 5 of this library, allows for other Transport layers than the original MIDI 1.0 Electrical Specification (hardware serial).

All these Transport layers use this library for all the underlying MIDI work, making it easy to switch transport protocols or making transport protocol bridges.

Differences between Serial & other transports

  • Software Thru is enabled by default on Serial, but not on other transports.

To report a bug, contribute, discuss on usage, or request support, please discuss it here.

You can also contact me on Twitter: @fortysevenfx.

Special thanks to all who have contributed to this open-source project !

You want to help ? Check out the contribution guidelines.

Источник

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