// The simplest possible way to talk to a BlinkyTape
import processing.serial.*;

Serial s;

void setup() {
// Connect to the first serial port we can find
// We assume there is a BlinkyTape there
  for(String p : Serial.list()) {
        // NOTE: you'll need to change the next line to match the serial port system, i.e. COMx on Windows
        if (p.startsWith("COM5")) { 
        s = new Serial(this, p, 115200);
        }
  }
}

int nbrLeds=12;
int ledsize=nbrLeds*3;
byte[] leds = new byte[ledsize];
int ledidx=0;

void draw() {
    int i;
    for(i=0; i<ledsize; i++) {
      leds[i]=1;
    }
    if (ledidx>=nbrLeds) {
      ledidx=0;
    }
    i=ledidx*3;
    leds[i]=40;
    leds[i+1]=40;
    leds[i+2]=40;
    
    for(i = 0; i < ledsize; i++) {
      s.write(leds[i]);
    }
    // Send a 0xFF byte to the strip, to tell it to display the pixels
    s.write((byte)255);
    println("Idx: ",ledidx);
    delay(10000);
    ledidx++;
}