// Include the required Wire library for I2C<br>

#include <Wire.h>
#include <Adafruit_NeoPixel.h>
#define numpixels 1
#define pixelpower 11
#define pixelpin 12
Adafruit_NeoPixel pixel(numpixels, pixelpin, NEO_GRB + NEO_KHZ800);


int LED = 13;
int x = 0;
void setup() {
  // Define the LED pin as Output
  pinMode (LED, OUTPUT);
  Serial.begin();

  pixel.begin();
  pinMode(pixelpower, OUTPUT);
  digitalWrite(pixelpower, HIGH);
  
  // Start the I2C Bus as Slave on address 9
  Wire.begin(9);
  // Attach a function to trigger when something is received.
  Wire.onReceive(receiveEvent);
  
}
void receiveEvent(int bytes) {
  x = Wire.read();    // read one character from the I2C
  Serial.println(x);
}
void loop() {
  if (x == 0)
  {
    pixel.setPixelColor(0, pixel.Color(255, 0, 0));
    pixel.show();
    delay(200);
  }
  if (x == 1)
  {
    pixel.setPixelColor(0, pixel.Color(0, 255, 0));
    pixel.show();
    delay(200);
  }
  if (x == 2)
  {
    pixel.setPixelColor(0, pixel.Color(0, 0, 255));
    pixel.show();
    delay(200);
  }
  if (x == 3)
  {
    pixel.setPixelColor(0, pixel.Color(255, 255, 0));
    pixel.show();
    delay(200);
  }
  if (x == 4)
  {
    pixel.setPixelColor(0, pixel.Color(0, 255, 255));
    pixel.show();
    delay(200);
  }
  if (x == 5)
  {
    pixel.setPixelColor(0, pixel.Color(255, 0, 255));
    pixel.show();
    delay(200);
  }
  else
  {
    pixel.setPixelColor(0, pixel.Color(255, 255, 255));
    pixel.show();
    delay(200);
  }
    Serial.println(x);

}