#include <Wire.h>


void setup() {
  Wire.begin();
  Serial.begin(9600);
}

void loop() {
  int bytesRecived = Wire.requestFrom(4,2);
  Serial.print(bytesRecived);
  Serial.print(" ");
  while(Wire.available()){
    byte low = Wire.read();
    byte high = Wire.read();
    int lightValue = low | (high<<8);
    Serial.println(lightValue);
  }
  delay(500);
}