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Проект выполнен процентов на 70ита 

midi система установлена в баян 

arduino mega прошита 

mocoLUFA что дает возможность передавать ноты

передавать ноты без переходников .Это как раз просто было .А вот теперь нужен midi разъем СГ 5 для синтезатора .Так как midi система уже работает с андройд виндовс и звуковым модулем без переходников на чистой arduino mega через usb порт. Нужно параллельно прикрутить midi разъем СГ 5 с использованием подключенной библиотеки midi.h. В интернете есть примеры но применить их к готовому коду не получается. Необходимо реализовать возможность отправки сообщений (ноты) через разъем сг 5 с сохранением отправки через usb порт

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nclude <MIDI.h>
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#include <midi_Defs.h>
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#include <midi_Message.h>
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#include <midi_Namespace.h>
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#include <midi_Settings.h>
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struct MySettings : public midi::DefaultSettings
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{
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  //By default, the Arduino MIDI Library tries to be smart by
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  //excluding the CC byte if it doesn't change (to save bandwidth).
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  //This is a problem when starting up Serial<->MIDI software
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  //after starting up the Arduino because we miss the first CC byte.
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  //Setting UseRunningStatus to false removes this "feature."
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  //See <a href="https://github.com/projectgus/hairless-midiserial/issues/16" rel="nofollow">https://github.com/projectgus/hairless-midiserial/issues/16</a> for details.
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  static const bool UseRunningStatus = false;
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  // Set MIDI baud rate. MIDI has a default baud rate of 31250,
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  // but we're setting our baud rate higher so that the Serial<->MIDI software
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  // can properly decode and read outgoing MIDI data on the computer.
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  static const long BaudRate = 31250;
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};
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//#define DEBUG//uncomment this line to print serial messages, comment to send MIDI data
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//#define BLUETOOTH//uncomment this line to send MIDI data via bluetooth instead of USB
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//#define BMP//uncomment this line to use the BMP180 to add dynamics via bellows
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//#define JOYSTICK//uncomment this line to use a joystick as a pitch-bend controller
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#ifdef BLUETOOTH
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  MIDI_CREATE_CUSTOM_INSTANCE(HardwareSerial, Serial1, MIDI, MySettings);
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#else
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  MIDI_CREATE_CUSTOM_INSTANCE(HardwareSerial, Serial, MIDI, MySettings);
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#endif
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void setup()
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{
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  #ifdef DEBUG
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    Serial.begin(9600);
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  #else
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    MIDI.begin();
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    //If we're sending MIDI over Serial1, open Serial for additional debugging
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    #ifdef BLUETOOTH
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      Serial.begin(9600);
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    #endif
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  #endif
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  //Digital pins start turned off
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  for (int i=0; i<sizeof(left_hand_pins);i++){
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    pinMode(left_hand_pins[i],OUTPUT);
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    digitalWrite(left_hand_pins[i], LOW);
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  }
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  for (int i=0; i<sizeof(right_hand_pins);i++){
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    pinMode(right_hand_pins[i],OUTPUT);
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    digitalWrite(right_hand_pins[i], LOW);
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  }
кодрасечатать?
01
void loop()
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{
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  #ifdef BMP
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    //Read pressure from the BMP_180 and convert it to MIDI expression
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    int expression = get_expression(prev_expression);
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    //Ignore it if it didn't change
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    if(expression != prev_expression) {
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      expression_avg[e] = expression;
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      //Only send MIDI CC every bmp_sample_rate times,
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      //but send the average of the last bmp_sample_rate deltas
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      if (e == bmp_sample_rate - 1){
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        expression = 0;
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        for (int i=0; i<bmp_sample_rate; i++){
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          expression += expression_avg[i];
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        }
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        expression = expression/bmp_sample_rate;
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        #ifdef DEBUG
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          Serial.print("Expression Change: ");
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          Serial.println(expression);
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        #else
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          MIDI.sendControlChange(CC_Expression,expression,1);
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          //Don't let bass overpower melody
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          MIDI.sendControlChange(CC_Expression,constrain(expression-6,0,127),2);
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          //Don't let chords overpower melody
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          MIDI.sendControlChange(CC_Expression,constrain(expression-12,0,127),3);
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        #endif
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        prev_expression = expression;
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        e = 0;
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      }
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      else {
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        e = e + 1;
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      }
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    }
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  #endif
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  #ifdef JOYSTICK
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    int pitch_bend_val = scan_joystick();
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    if(pitch_bend_val != joystick_prev_val) {
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      //Comment and uncomment to select which channels you want pitch bend to affect.
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      MIDI.sendPitchBend(pitch_bend_val, 1);
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      //MIDI.sendPitchBend(pitch_bend_val, 2);
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      //MIDI.sendPitchBend(pitch_bend_val, 3);
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      joystick_prev_val = pitch_bend_val;
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    }
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  #endif
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  //Alternate between scanning the left and right hand pins
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  //to reduce necessary delay between reads
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  for (int i=0; i<9;i++){
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    scan_pin(right_hand_pins[i], i, RightKeysStatus[i], false);
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    scan_pin(left_hand_pins[i%3], i%3, LeftKeysStatus[i%3], true);
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  }
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}
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byte reg_values = 0;
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//Read the analog port value for the given pin
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//If something changed, trigger MIDI signal
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void scan_pin(int pin, int index, byte PinStatus, bool left) {
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  //TODO - I wonder if we can replace this with direct port write for even better performance?
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  digitalWrite(pin, HIGH);
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  //A slight delay is needed here or else we'll be reading the previous pin
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  delayMicroseconds(300);//was able to cut this in half by alternating between left and right
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  if (left) {
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    reg_values = ~PINL;
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  }
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  else {
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    reg_values = ~PINC;
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  }
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  digitalWrite(pin, LOW);
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  //check if something changed
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  if (reg_values != PinStatus){
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    //if the byte value is greater, we're turning the note on; else, turning it off.
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    if (reg_values > PinStatus){
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      //using bit-wise OR to send modified bits only
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      check_key(reg_values ^ PinStatus, index, true, left);
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    }
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    else {
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      check_key(reg_values ^ PinStatus, index, false, left);
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    }
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  }
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}