/* capteur branché avec sortie sur  pin24 arduino */
 bool EtatEntree24 = HIGH ;
 bool VarSuivi24 = HIGH ;
 bool EtatEntree26 = HIGH ;
 bool VarSuivi26 = HIGH ;
 bool EtatEntree28 = HIGH ;
 bool VarSuivi28 = HIGH ;

void setup() 
{

  pinMode(24,INPUT);
  pinMode(26,INPUT);
  pinMode(28,INPUT);
  Serial.begin(31250); /* initialisation d'un port serie au debit MIDI */
  noteOn(0x80, 0x24 , 0x00 ) ; /* note off sur canal1 ;  C2 ; vel 0 */
  noteOn(0x80, 0x26 , 0x00 ) ; /* note off sur canal1 ;  D2 ; vel 0 */
  noteOn(0x80, 0x28 , 0x00 ) ; /* note off sur canal1 ;  E2 ; vel 0 */
 
}



void noteOn(int cmd, int pitch, int velocity) /* plays a MIDI note. Doesn't check to see that cmd is greater than 127, 
                                                 or that data values are less than 127 */
{
  Serial.write(cmd);
  Serial.write(pitch);
  Serial.write(velocity);
}


void loop() 
  {

    EtatEntree24 = digitalRead(24);
    EtatEntree26 = digitalRead(26);
    EtatEntree28 = digitalRead(28);
    if ( (EtatEntree24 != VarSuivi24)  && (EtatEntree24 == HIGH) )
      {
      noteOn(0x80, 0x24 , 0x00) ;    /* note off sur canal1 ;  C2 ; vel 0 */
                                     /* Serial.println("touche lachee"); */
      VarSuivi24 = HIGH;
      }
      
    if ( (EtatEntree24 != VarSuivi24)  && (EtatEntree24 == LOW) )
      {
      noteOn(0x90, 0x24 , 0x70) ;     /* note on sur canal1 ; C2 ; vel */    
                                      /* Serial.println("touche appuyee"); */
      VarSuivi24 = LOW;
      }

    if ( (EtatEntree26 != VarSuivi26)  && (EtatEntree26 == HIGH) )
      {
      noteOn(0x80, 0x26 , 0x00) ;    /* note off sur canal1 ;  D2 ; vel 0 */
                                     /* Serial.println("touche lachee"); */
      VarSuivi26 = HIGH;
      }
      
   if ( (EtatEntree26 != VarSuivi26)  && (EtatEntree26 == LOW) )
      {
      noteOn(0x90, 0x26 , 0x70) ;     /* note on sur canal1 ; D2 ; vel */    
                                      /* Serial.println("touche appuyee"); */
      VarSuivi26 = LOW;
      }

    if ( (EtatEntree28 != VarSuivi28)  && (EtatEntree28 == HIGH) )
      {
      noteOn(0x80, 0x28 , 0x00) ;    /* note off sur canal1 ;  C2 ; vel 0 */
                                     /* Serial.println("touche lachee"); */
      VarSuivi28 = HIGH;
      }
      
    if ( (EtatEntree28 != VarSuivi28)  && (EtatEntree28 == LOW) )
      {
      noteOn(0x90, 0x28 , 0x70) ;     /* note on sur canal1 ; C2 ; vel */    
                                      /* Serial.println("touche appuyee"); */
      VarSuivi28 = LOW;
      }
















    
 /* // play notes from F#-0 (0x1E) to F#-5 (0x5A):
  for (int note = 0x1E; note < 0x5A; note ++) {
    //Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
    noteOn(0x90, note, 0x45);
    delay(100);
    //Note on channel 1 (0x90), some note value (note), silent velocity (0x00):
    noteOn(0x90, note, 0x00);
    delay(100); */
    
 }