API tools faq
paste
LandoRo

piano code multibuttoned array

LandoRo
May 28th, 2022 (edited)
436
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
C++ 2.70 KB | None | 0 0
raw download clone embed print report
  1. const int channel = 1; // global midi channel
  2. const int buttonPinL = 3; // set array rows with easy naming
  3. const int buttonPinR = 2; // set array colums with easy naming
  4.  
  5. int buttonPin[buttonPinL][buttonPinR] = {
  6.   {0, 3}, // 1.65v comparaor threshold buttons
  7.   {1, 4}, // 3.3v comparator threshold buttons
  8.   {2, 5} // damper off buttons
  9. };
  10.  
  11. volatile unsigned long timerA [2] = {0, 3}; // 1.65v comparaor timing
  12. volatile unsigned long timerB [2] = {1, 4}; // 3.3v comparaor timing
  13. volatile unsigned long timerPassed [2] = {1, 2};// timeb-timea
  14. volatile boolean triggerA [2] = {0, 3};// timer validation used to trigger sound
  15. volatile boolean triggerB [2] = {1, 4};
  16.  
  17. float maxVelocityTime = 30000; // my slowest amount of time passed between 1.65 and 3.3v threshold
  18.  
  19. int velocity1;
  20. float velocityFloat1;
  21. float velocityFloatCorrected1;
  22.  
  23. void int1 () // ISR for threshold time stamps 1.65v
  24. {
  25.   if (!triggerA [0])
  26.   {
  27.     timerA [0] = micros () ;
  28.     triggerA [0] = true ;
  29.   }
  30. }
  31.  
  32. void int2 () // // ISR for threshold time stamps 3.3v
  33. {
  34.   if (triggerA [0] && !triggerB [0])
  35.   {
  36.     timerB [0] = micros () ;
  37.     triggerB [0] = true ;
  38.   }
  39. }
  40.  
  41. void int3 ()
  42. {
  43.   if (!triggerA [1])
  44.   {
  45.     timerA [1] = micros () ;
  46.     triggerA [1] = true ;
  47.   }
  48. }
  49.  
  50. void int4 ()
  51. {
  52.   if (triggerA [1] && !triggerB [1])
  53.   {
  54.     timerB [1] = micros () ;
  55.     triggerB [1] = true ;
  56.   }
  57. }
  58.  
  59. void setup ()
  60. { for (int j = 0; j < buttonPinL ; j++) {
  61.     for (int i = 0; i < buttonPinR ; i++) {
  62.       pinMode(buttonPin[j][i] , INPUT_PULLUP);
  63.  
  64.       triggerA [i] = false ;// timing debounce
  65.       triggerB [i] = false ;
  66.  
  67.  
  68.     }
  69.   }
  70.   attachInterrupt (buttonPin[0][0] , int1, RISING) ;
  71.   attachInterrupt (buttonPin[0][1] , int3, RISING) ;
  72.   attachInterrupt (buttonPin[1][0] , int2, RISING) ;
  73.   attachInterrupt (buttonPin[1][1] , int4, RISING) ;
  74.  
  75. }
  76. void loop () {
  77.   byte offButton[2] = {1, 4};
  78.   byte midiNote[2] = {60, 63};
  79.  
  80.   for (int i = 0; i < buttonPinR ; i++) {
  81.  
  82.     offButton[i] = digitalRead(buttonPin[2][i]);
  83.  
  84.     if (triggerB [i]) // when both thresholds are proven process note
  85.     {
  86.       timerPassed [i] = (timerB [i] - timerA [i]);
  87.       //Serial.println (timePassed1) ;
  88.  
  89.       velocityFloat1 = 127 * maxVelocityTime / timerPassed [i];
  90.       if (velocityFloat1 > 127)
  91.       {
  92.         velocity1 = 127;
  93.       }
  94.       else
  95.       {
  96.  
  97.         velocityFloatCorrected1 = sqrt(127 * velocityFloat1);
  98.         velocity1 = velocityFloatCorrected1;
  99.       }
  100.       usbMIDI.sendNoteOn(midiNote[i], velocity1, 1);
  101.  
  102.       noInterrupts () ;
  103.       triggerB [i] = triggerA [i] = false ;
  104.       interrupts () ;
  105.     }
  106.     if ( offButton[i] == LOW) {
  107.       usbMIDI.sendNoteOff(midiNote[i], 0, 1);
  108.  
  109.     }
  110.   }
  111. }
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!