// Wire Slave Receiver/Replier.
// by Nicholas Zambetti <http://www.zambetti.com>
// Editted by Robert W. Lindeman <http://www.cs.wpi.edu/~gogo/>

#include <Wire.h>

void setup( )  { 
  // We are I2C device #4.
  Wire.begin( 4 );                  // Join i2c bus with address #4 
  Wire.onReceive( receiveHandler ); // Register Receive event hanlder
  Serial.begin( 9600 );             // Start serial for output
  Serial.println( "Slave" );
} 
 
void loop( )  {
  delay( 100 );
}

// Function that executes whenever data is received from master
// This function is registered as an event handler, see setup()
void receiveHandler( int howMany )  {
  while( Wire.available( ) > 1 )  {
    char c = Wire.receive( );           // Receive byte as a character
    Serial.print( c );
  }
  int x = Wire.receive( );       // Receive byte as a character
  Serial.println( x );
}