Need some form of debounce for my code and have no idea how to implement one

silageman

As above i'm currently working on an arduino project (physical edrum trigger/piezo) i currently have an uno talking to processing 3 through a serial connection and then displaying a simple graph, when the inByte is greater than 1 (pull down resistor is at 0 untriggered) it sends midi notes to ezdrummer 2, i have all this working my problem is when i hit the drum it triggers multiple times within a short period of the strike, anyone know what would be the best solution for a debounce?

my current code below.

import processing.serial.*;

import themidibus.*; 

MidiBus myBus; 

Serial myPort;        
int xPos = 1;         
float inByte = 0;

void setup () {
  MidiBus.list();
  // set the window size:
  size(900, 400);

  println(Serial.list());
  myBus = new MidiBus(this, 1, 3); 

  myPort = new Serial(this, Serial.list()[1], 115200);

  myPort.bufferUntil('\n');

  background(0);
}

void draw () {
  // draw the line:
  stroke(127, 34, 255);
  line(xPos, height, xPos, height - inByte);

  // at the edge of the screen, go back to the beginning:
  if (xPos >= width) {
    xPos = 0;
    background(255,255,255);
  } else {
    // increment the horizontal position:
    xPos++;
  }
}

void serialEvent (Serial myPort) {
  // get the ASCII string:
  String inString = myPort.readStringUntil('\n');

  if (inString != null) {
    // trim off any whitespace:
    inString = trim(inString);
    // convert to an int and map to the screen height:
    inByte = int(inString);

    println(inByte);
    int a = 56;
    inByte = map(inByte, 0, 1023, 0, 127);
    int test = int(inByte);
    if(inByte > 2){
      myBus.sendNoteOn(1, 38, test); // Send a Midi noteOn
      delay(1);
      inByte--;
      myBus.sendNoteOff(1, 38, test); // Send a Midi nodeOff
    }
  }
}

silageman

i cant format my code sorry heres the pastebin: http://pastebin.com/ePh8aPis