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// Wire Slave Receiver
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// by Nicholas Zambetti <http://www.zambetti.com>
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// Demonstrates use of the Wire library
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// Receives data as an I2C/TWI slave device
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// Refer to the "Wire Master Writer" example for use with this
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// Created 29 March 2006
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// This example code is in the public domain.
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#include <Wire.h>
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void setup()
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{
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  Wire.begin(4);                // join i2c bus with address #4
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  Wire.onReceive(receiveEvent); // register event
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  Serial.begin(9600);           // start serial for output
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}
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void loop()
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{
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  delay(100);
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}
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// function that executes whenever data is received from master
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// this function is registered as an event, see setup()
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void receiveEvent(int howMany)
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{
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  while(1 < Wire.available()) // loop through all but the last
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  {
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    char c = Wire.read(); // receive byte as a character
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    Serial.print(c);         // print the character
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  }
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  int x = Wire.read();    // receive byte as an integer
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  Serial.println(x);         // print the integer
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}