#include <Wire.h>

# define I2C_SLAVE_ADDRESS 11 // 12 pour l'esclave 2 et ainsi de suite

#define PAYLOAD_SIZE 2
#define LED 4
int n = 1;
void setup()
{
  pinMode(LED, OUTPUT);
  Wire.begin(I2C_SLAVE_ADDRESS);
  Serial.begin(9600); 
  Serial.println("-------------------------------------I am Slave1");
  delay(1000);               
  Wire.onRequest(requestEvents);
  Wire.onReceive(receiveEvents);
  digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(500);                       // wait for a second
  digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
}

void loop(){
      digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(200*n);                       // wait for a second
      digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
      delay(200*n);
  }



void requestEvents()
{
  Serial.println(F("---> recieved request"));
  Serial.print(F("sending value : "));
  Serial.println(n);
  Wire.write(n);
}

void receiveEvents(int numBytes)
{  
  
  Serial.println(F("---> recieved events"));
  n = Wire.read();
  Serial.print(numBytes);
  Serial.println(F("bytes recieved"));
  Serial.print(F("recieved value : "));
  Serial.println(n);

}


//#include <Wire.h>
//
//# define I2C_SLAVE_ADDRESS 11 // 12 pour l'esclave 2 et ainsi de suite
//
//#define PAYLOAD_SIZE 2
//#define LED 4
//void setup()
//{
//  pinMode(LED, OUTPUT);
//  Wire.begin(I2C_SLAVE_ADDRESS);
//  delay(1000);               
//  Wire.onRequest(requestEvents);
//  Wire.onReceive(receiveEvents);
//   digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
// delay(500);                       // wait for a second
// digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
// delay(500);
//}
//
//void loop(){}
//
//int n = 0;
//
//void requestEvents()
//{
// Wire.write(n);
// digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
// delay(500);                       // wait for a second
// digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
// delay(500);
// digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
// delay(200);                       // wait for a second
// digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
// delay(200);
//}

//void receiveEvents(int numBytes)
//{  
//  int n = 0;
//  n = Wire.read();
//  for(int i = 0; i <= 3; i++ ){
//      digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
//      delay(1000);                       // wait for a second
//      digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
//      delay(1000);
//      }
//  digitalWrite(LED, LOW);
//  }
//
//