#include <Wire.h>

int buttonState;

void setup() {
  // put your setup code here, to run once:
  Wire.begin(1);//this is just a number for address, not pins
  Serial.begin(115200);
  Wire.onRequest(requestEvent);
  Wire.onReceive(receiveEvent);

  pinMode(0, INPUT);
  pinMode(48, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(0) == LOW){
  buttonState = 1;
  }else {
  buttonState = 0;
  }
}

void requestEvent(){
 Wire.write(buttonState);
 Serial.println("sending");
 delay(500);
}

void receiveEvent(int x){
  digitalWrite(48, Wire.read());
  delay(500);
}