USBH_MIDI/UHS2-MIDI Example of same two MIDI device

UHS2MIDI_2dev_same.ino

/*
 *******************************************************************************
 * USBH_MIDI/UHS2-MIDI Example of same two MIDI device
 * 
 * Copyright (C) 2025 Yuuichi Akagawa
 *******************************************************************************
*/
#include <UHS2-MIDI.h>
#include <usbhub.h>
USB Usb;
USBHub  Hub1(&Usb);

#define NUMBER_OF_DEVICES 2
UHS2MIDI_CREATE_INSTANCE(&Usb, 0, Midi1);
UHS2MIDI_CREATE_INSTANCE(&Usb, 0, Midi2);

MIDI_NAMESPACE::MidiInterface<UHS2MIDI_NAMESPACE::uhs2MidiTransport> *Midi[] {&Midi1, &Midi2};

//device index
uint8_t ixmidi[2] = {0xff, 0xff};

void setup() {
  Serial.begin(115200);

  Midi1.begin(MIDI_CHANNEL_OMNI);
  Midi2.begin(MIDI_CHANNEL_OMNI);

  //USB attach/detach handler
  Midi1.getTransport()->attachOnInit(onInit1);
  Midi2.getTransport()->attachOnInit(onInit2);
  Midi1.getTransport()->attachOnRelease(onDetach1);
  Midi2.getTransport()->attachOnRelease(onDetach2);

  if (Usb.Init() == -1) {
    while (1); //halt
  }//if (Usb.Init() == -1...
  delay( 200 );
}

void loop() {
  Usb.Task();

  //MIDI Controller 1
  if ( ixmidi[0] != 0xff ) {
    do {
      Midi[0]->read();
    } while ( Midi[0]->getTransport()->available() > 0);
  }

  //MIDI Controller 2
  if ( ixmidi[1] != 0xff ) {
    do {
      Midi[1]->read();
    } while ( Midi[1]->getTransport()->available() > 0);
  }
}

void onInit1()
{
  setupmidi(0);
}

void onInit2()
{
  setupmidi(1);
}

void onDetach1()
{
  detachMidi(0);
}

void onDetach2()
{
  detachMidi(1);
}

void setupmidi(uint8_t idx)
{
  uint16_t vid = Midi[idx]->getTransport()->idVendor();
  uint16_t pid = Midi[idx]->getTransport()->idProduct();

  ixmidi[idx] = idx;

  //register MIDI message handler
  if( idx == 0 ) {
    Midi[idx]->setHandleNoteOn(handleNoteOn_0);
    Midi[idx]->setHandleNoteOff(handleNoteOff_0);
  } else if( idx == 1 ) {
    Midi[idx]->setHandleNoteOn(handleNoteOn_1);
    Midi[idx]->setHandleNoteOff(handleNoteOff_1);
  }
}

void detachMidi(uint8_t idx)
{
  ixmidi[idx] = idx;

  //unregister MIDI message handler
  Midi[idx]->setHandleNoteOn(nullptr);
  Midi[idx]->setHandleNoteOff(nullptr);
}

char print_buf[32];

//MIDI message handler
void handleNoteOn_0(byte inChannel, byte inNumber, byte inVelocity)
{
  sprintf(print_buf, "%02X>NoteOn:  %02X %02X %02X", Midi[0]->getTransport()->GetAddress(), inChannel, inNumber, inVelocity);
  Serial.println(print_buf);
}

void handleNoteOff_0(byte inChannel, byte inNumber, byte inVelocity)
{
  sprintf(print_buf, "%02X>NoteOff: %02X %02X %02X", Midi[0]->getTransport()->GetAddress(), inChannel, inNumber, inVelocity);
  Serial.println(print_buf);
}

void handleNoteOn_1(byte inChannel, byte inNumber, byte inVelocity)
{
  sprintf(print_buf, "%02X>NoteOn:  %02X %02X %02X", Midi[1]->getTransport()->GetAddress(), inChannel, inNumber, inVelocity);
  Serial.println(print_buf);
}

void handleNoteOff_1(byte inChannel, byte inNumber, byte inVelocity)
{
  sprintf(print_buf, "%02X>NoteOff: %02X %02X %02X", Midi[1]->getTransport()->GetAddress(), inChannel, inNumber, inVelocity);
  Serial.println(print_buf);
}