int i = 0;
char buf[20];
int color[5];

// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// Released under the GPLv3 license to match the rest of the
// Adafruit NeoPixel library

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
#define PIN        16 // On Trinket or Gemma, suggest changing this to 1

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 4// Popular NeoPixel ring size

// When setting up the NeoPixel library, we tell it how many pixels,
// and which pin to use to send signals. Note that for older NeoPixel
// strips you might need to change the third parameter -- see the
// strandtest example for more information on possible values.
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRBW + NEO_KHZ800);


#define DELAYVAL 500 // Time (in milliseconds) to pause between pixels

void setup() {
  // These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
  // Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  // END of Trinket-specific code.
  Serial.begin(115200);
  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
  pixels.show();            // Turn OFF all pixels ASAP
  pixels.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)
}

void loop() {
  if (Serial.available()) {
    pixels.clear(); // Set all pixel colors to 'off'
    buf[i] = Serial.read();
    if (buf[i] == 'e') { // set 'e' at the end of the last caracter
      buf[i] = '\0';
      Serial.println(buf);

      color[0] = atoi(strtok(buf, ","));
      color[1] = atoi(strtok(NULL, ",")); // use NULL from second group
      color[2] = atoi(strtok(NULL, ","));

      pixels.setPixelColor(0, color[0], color[1], color[2], 0);
      pixels.setPixelColor(1, color[0], color[1], color[2], 0);
      pixels.setPixelColor(2, color[0], color[1], color[2], 0);
      pixels.setPixelColor(3, color[0], color[1], color[2], 0);
      pixels.show();   // Send the updated pixel colors to the hardware.

      //send back data to processing
      Serial.println("color[0],color[1],color[2]");
//      Serial.println(color[1]);
//      Serial.println(color[2]);
      i = 0;
    }
    else {
      i++;
    }
  }
}