#include <Wire.h>

#define SLAVE_ADDRESS 8

void setup() {
  Wire.begin(SLAVE_ADDRESS); 
  Wire.onReceive(receiveEvent);
  Wire.onRequest(requestEvent); 
  Serial.begin(9600);
}

void loop() {

}


void receiveEvent(int bytes) {
  while (Wire.available()) {
    char c = Wire.read(); 
    Serial.print("Received: ");
    Serial.println(c);
  }
}


void requestEvent() {
  Wire.write("Hello"); 
}