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#include <Wire.h>
#define LED_PIN 13
byte x = 0;
void setup()
{
Wire.begin(); // Start I2C Bus as Master
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, LOW);
}
void loop()
{
Wire.beginTransmission(9); // transmit to device #9
Wire.send(x); // sends x
Wire.endTransmission(); // stop transmitting
x++;
if (x > 5) x=0;
delay(900);
}#include <Wire.h>
#define LED_PIN 13
int x;
void setup() {
Wire.begin(9); // Start I2C Bus as a Slave (Device Number 9)
Wire.onReceive(receiveEvent); // register event
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, LOW);
x = 0;
}
void loop() {
//If value received is 0 blink LED 1
if (x == 0) {
digitalWrite(LED_1, HIGH);
delay(100);
digitalWrite(LED_1, LOW);
delay(100);
}
//If value received is 1 blink LED 2
if (x == 1) {
digitalWrite(LED_1, HIGH);
delay(300);
digitalWrite(LED_1, LOW);
delay(300);
}
}
void receiveEvent(int howMany) {
x = Wire.receive(); // receive byte as an integer
}