A lot of incoming midi messeges cause synth

Projects Programming
5

thank you for reply , but it did not solve yet
there is no any issue with keypad code. when i disconnect midi (from synth to Arduino) or i removed code line below , it works fine. every key press from arduino change prog of my synth & also show key number on oled display.

        if (MIDI.read())                // Is there a MIDI message incoming ?
    {
        switch(MIDI.getType())      // Get the type of the message we caught
        {           case midi::NoteOn:       // If it is a Note on,
             int Channel = (MIDI.getChannel());
              int D1 = ( MIDI.getData1()) ;
               int D2 = ( MIDI.getData2());                     

  display.clearDisplay();
  display.setTextSize(1);             
  display.setTextColor(SSD1306_WHITE);        
  display.setCursor(0,0);             
  display.println(Channel);
  display.setCursor(50,0);             
  display.println(D1);
  display.setCursor(0,16);           
  display.println(D2);
  display.display();
   Note_In = D1;
                break;
        }
    }

i seemed any problem in Midi library. when above code is added to sketch, it behave flood of midi messeges , hanged out my synth.No any result is shown on Display.only midi out from Arduino is working . before adding midi & display code , i have check every key press in serial monitor. before adding midi code , i see every key pressed & released on display. so no issue with keypad code or wiring. problem is in -:

  if (MIDI.read())

please help me. whererfrom these a lot midi messsege are coming,
is there another midi library availble for 5pin midi to test again.???
or any other solution ???