MIDI

Control MIDI equipment!

Library

Import Library:

http://mbed.org/projects/cookbook/svn/MIDI/trunk

• For details on how to use this in the compiler, see Importing Projects and Libraries in to the Compiler

Hardware

                     gnd
                      |
                      o
tx ----[ 220R ]----o     o----[ 220R ]---- +3.3v
                  o       o

          (view from back of socket)

Hello World

Press middle C for 1 second

#include "mbed.h" #include "MIDI.h" MIDI midi(p13, p14); int main() { midi.noteon(60); wait(1); midi.noteoff(60); }

Source Code of MIDIHelloWorld.bin (LPC1768 LPC2368)

MIDI API

MIDI	A MIDI port, used for sending MIDI commands to e.g.
Functions
MIDI	Create a MIDI port connected to the specified serial pins
noteon	Send a Note On Message
noteoff	Send a Note Off Message
pitch	Send a Pitchbend Message
controller	Send a Continuous Controller Message
patch	Send a Patch Change Message

class MIDI

A MIDI port, used for sending MIDI commands to e.g.

MIDI( PinName  tx, PinName  rx )

Create a MIDI port connected to the specified serial pins

void noteon( int  key,    int  velocity  =  127, int  channel  =  1 )

Send a Note On Message

void noteoff( int  key,    int  velocity  =  127, int  channel  =  1 )

Send a Note Off Message

void pitch( float  pitchbend,    int  channel  =  1 )

Send a Pitchbend Message

void controller( int  controller,    int  value,    int  channel  =  1 )

Send a Continuous Controller Message

void patch( int  instrument,    int  channel  =  1 )

Send a Patch Change Message

See MIDI/trunk/MIDI.h for full details

Examples

• Mario MIDI on YouTube

See Also

• http://ccrma.stanford.edu/~craig/articles/linuxmidi/misc/essenmidi.html
• http://www.fourmilab.ch/webtools/midicsv/
• Control Change Messages : http://www.midi.org/about-midi/table3.shtml

Development Notes

Some notes/links that are useful for developement of the library itself...

MIDI Message Format

Command Name	Code	Parameter 1	Parameter 2
Note-off	0x8<c>	Key	Velocity
Note-on	0x9<c>	Key	Veolcity
Aftertouch	0xA<c>	Key	Touch
Continuous controller	0xB<c>	Controller	Value
Patch change	0xC<c>	Instrument	-
Channel Pressure	0xD<c>	Pressure	-
Pitch bend	0xE<c>	LSB (0-127)	MSB (0-127)