Mackie-Control-Universal-Reverse-Engineering.ino

Mackie-Control-Universal-Reverse-Engineering

Sketch that reads the MIDI input from the USB MIDI Interface and prints it to the Serial monitor, including the Mackie Control Universal note names.

This is useful to discover what kinds of messages your DAW is sending.

Boards:

AVR, AVR USB, Nano Every, Due, Nano 33, Teensy 3.x, ESP32

 
#include <Control_Surface.h>
 
// A MIDI over USB interface
USBMIDI_Interface midi;
 
bool channelMessageCallback(ChannelMessage cm) {
  if ((cm.header & 0xF0) == 0x90)
    Serial << hex << cm.header << ' ' << cm.data1 << ' ' << cm.data2 << dec 
           << "\t(" <<  MCU::getMCUNameFromNoteNumber(cm.data1)  << ")" << endl;
  else 
    Serial << hex << cm.header << ' ' << cm.data1 << ' ' << cm.data2 << dec << endl;
  return false; // Return true to indicate that handling is done,
                // and Control_Surface shouldn't handle it anymore.
                // If you want Control_Surface to handle it as well,
                // return false.
}
 
bool sysExMessageCallback(SysExMessage se) {
  Serial << F("SysEx: ") << hex;
  for (size_t i = 0; i < se.length; ++i)
    Serial << se.data[i] << ' ';
  Serial << dec << F("on cable ") << se.CN << endl;
  return false; // Return true to indicate that handling is done,
                // and Control_Surface shouldn't handle it anymore.
                // If you want Control_Surface to handle it as well,
                // return false.
}
 
bool realTimeMessageCallback(RealTimeMessage rt) {
  Serial << F("Real-Time: ") << hex << rt.message << dec
         << F(" on cable ") << rt.CN << endl;
  return false; // Return true to indicate that handling is done,
                // and Control_Surface shouldn't handle it anymore.
                // If you want Control_Surface to handle it as well,
                // return false.
}
 
void setup() {
  // Make sure that the Serial interface is fast enough, so it doesn't stall the MIDI 
  // application
  Serial.begin(1000000);
  Control_Surface.begin();
  Control_Surface.setMIDIInputCallbacks(channelMessageCallback,   //
                                        sysExMessageCallback,     //
                                        realTimeMessageCallback); //
}
 
void loop() {
  Control_Surface.loop();
}