// -*- c++ -*-

#ifdef __AVR_ATmega328P__
/* Corresponds to A4/A5 - the hardware I2C pins on Arduinos */
#define SDA_PORT PORTC
#define SDA_PIN 4
#define SCL_PORT PORTC
#define SCL_PIN 5
#define I2C_FASTMODE 1
#else
#define SDA_PORT PORTB
#define SDA_PIN 0
#define SCL_PORT PORTB
#define SCL_PIN 2
#define I2C_FASTMODE 1
#endif

#define I2C_TIMEOUT 100
#define I2C_FASTMODE 1

#include <Wire.h>

void setup()
{
  Wire.begin();

  Serial.begin(9600);
 }

byte inputBuffer[4];
void loop()
{
  if (Serial.available() == 0) {
    while (Serial.available() == 0)
      ;
    Serial.readBytes(inputBuffer, 4);
    byte p = inputBuffer[0];
  
    if (p == 1) {
      Wire.beginTransmission(11);
      Serial.write(Wire.endTransmission());
    
    }
  }
}