Ton programme devrait plus ressembler à ça :
#include <Wire.h>
byte buffer;
void setup()
{
Serial.begin(9600);
Wire.begin(0x52);
pinMode(13,OUTPUT);
pinMode(12,OUTPUT);
pinMode(11,OUTPUT);
Wire.onReceive(receiveEvent);
}
void loop(){
}
void receiveEvent(int bytesReceived) {
buffer=Wire.receive();
Serial.print("Donnee recu : ");
Serial.println(buffer);
switch (buffer) {
case 0x40 :
digitalWrite(13,HIGH);
Serial.println("LED 1 ON");
break;
case 0x20 :
digitalWrite(12,HIGH);
Serial.println("LED 2 ON");
break;
case 0x35 :
digitalWrite(13,LOW);
Serial.println("LED 3 OFF");
digitalWrite(12,LOW);
Serial.println("LED 2 OFF");
digitalWrite(11,LOW);
Serial.println("LED 1 OFF");
break;
}
}