function draw() { noLoop(); }

​

var midi = null;  // global MIDIAccess object

function onMIDISuccess( midiAccess ) {

console.log( "MIDI ready!" );

midi = midiAccess;  // store in the global (in real usage, would probably keep in an object instance)

  listInputsAndOutputs(midi);+

    startLoggingMIDIInput();

}

​

function onMIDIFailure(msg) {

console.log( "Failed to get MIDI access - " + msg );

}

​

navigator.requestMIDIAccess().then( onMIDISuccess, onMIDIFailure );

​

​

​

​

function listInputsAndOutputs( midiAccess ) {

  for (var entry of midiAccess.inputs) {

    var input = entry[1];

    console.log( "Input port [type:'" + input.type + "'] id:'" + input.id +

      "' manufacturer:'" + input.manufacturer + "' name:'" + input.name +

      "' version:'" + input.version + "'" );

  }

​

  for (var entry of midiAccess.outputs) {

    var output = entry[1];

    console.log( "Output port [type:'" + output.type + "'] id:'" + output.id +

      "' manufacturer:'" + output.manufacturer + "' name:'" + output.name +

      "' version:'" + output.version + "'" );

  }

}

​

​

function startLoggingMIDIInput( midiAccess, indexOfPort ) {

  midiAccess.inputs.forEach( function(entry) {entry.onmidimessage = onMIDIMessage;});

}

​

function onMIDIMessage( event ) {

  var str = "MIDI message received at timestamp " + event.timeStamp + "[" + event.data.length + " bytes]: ";

  for (var i=0; i<event.data.length; i++) {

    str += "0x" + event.data[i].toString(16) + " ";

  }

  console.log( str );

}

​

​