ProcessingController

import processing.serial.*;
import controlP5.*;

Serial myPort;
ControlP5 cp5;

ArrayList<Integer> leds = new ArrayList<Integer>();
int off = 0;
int ledSize = 20;

long last;
int interval = 100;
float y = 0;

int noiseDetail = 2;
float amplitude = 10;

int inByte = -1;
int phase = 0;

void setup() {
  size(2300, 1080, P2D);
  colorMode(HSB, 100);

  off = (width - (ledSize*100))/2;

  for (int i = 0; i < 100; i++) {
    leds.add(color(100, 100, 100));
  }


  cp5 = new ControlP5(this);

  cp5.addSlider("noiseDetail")
    .setPosition(20, 20)
    .setSize(200, 30)
    .setRange(1, 8)
    .setNumberOfTickMarks(8);

  cp5.addSlider("amplitude")
    .setPosition(20, 60)
    .setSize(200, 30)
    .setRange(2, 20);

  cp5.addSlider("interval")
    .setPosition(20, 100)
    .setSize(200, 30)
    .setRange(10, 200);


  String portName = Serial.list()[1];
  myPort = new Serial(this, portName, 250000);
}

void serialEvent(Serial myPort) {
  inByte = myPort.read();
  println("Read: "+inByte);
}


void draw() {
  if (phase == 0) {
    myPort.write((int)'a');
    phase = 1;
    println("Sent A, waiting for B...");
  }
  if (phase == 1) {
    if (inByte == 'b') {
      phase = 2;
      println("Got B, Sending C...");
      return;
    }
  }
  if (phase == 2) {
    myPort.write((int)'c');
    phase = 3;
    println("Sent C, waiting for D...");
  }
  if (phase == 3) {
    if (inByte == 'd') {
      phase = 4;
      println("Got D, Ready to Start!");
      return;
    }
  }

  if (phase == 4) {
    noiseDetail(noiseDetail, 0.5);
    float o = 0;
    for (int i = 0; i < 100; ++i) {
      int c = color(noise((int) o, y) * amplitude, 100, 100);
      leds.set(i, c);
      o += 0.5;
    }

    if (millis() - last > interval) {
      y += 0.1;
      transmitLeds();
      last = millis();
    }

    drawLeds();
  }
}

void transmitLeds() {
  //String data = "";
  //for (int l = 0; l < leds.size(); l++) {
  //  data += hex(leds.get(l), 6);
  //  myPort.write(hex(leds.get(l), 6));
  //}
  //data += 'X';
  myPort.write((char)random(48, 57));
  myPort.write((char)random(48, 57));
  myPort.write('x');

  //transmit(data);
}

void transmit(String data) {
  for (int i = 0; i < data.length(); i++) myPort.write(data.charAt(i));
  print("Transmitted... ");
}

void drawLeds() {
  background(0);
  for (int l = 0; l < leds.size(); l++) {
    // int c = leds.get(l);
    noStroke();
    fill(leds.get(l));
    rect(off + (ledSize*l), 540, ledSize, ledSize);
  }
}