ConexiuneArduinoCuPi.ino

#include <Wire.h>


#define SLAVE_ADDRESS 0x04
int number = 0;
int state = 0;
//ENCODER PART------------------
unsigned long timp1, timp2;
float frecventa;
//PINS
int interuptPin = 3;
//SDA A4
//SCLK A5
void setup() {

	//ENCODER PART------------------
	timp1 = millis();
	attachInterrupt(digitalPinToInterrupt(interuptPin), ISRFunction, RISING);
	//-----------------------------
	Serial.begin(9600); // start serial for output					
	Wire.begin(SLAVE_ADDRESS);// initialize i2c as slave

	// define callbacks for i2c communication
	Wire.onReceive(receiveData);
	Wire.onRequest(sendData);

	Serial.println("Ready!");
}

void loop() {
	delay(100);
}

// callback for received data
void receiveData(int byteCount) {

	while (Wire.available()) {
		number = Wire.read();
		Serial.print("yo nigga I got new data : ");
		Serial.println(number);
			}
		}
	


// callback for sending data
void sendData() {
	Wire.write(number);
}


//ENCODER PART------------------
void ISRFunction()
{
	frecventa = 1000000 / (float)(micros() - timp2);		//Din cauza decentrarii avem variatie de 10 Hz
	timp2 = micros();
	Serial.println(frecventa);
}