Wire Library Arduino May 2026

void loop() Wire.requestFrom(0x08, 1); if (Wire.available()) int received = Wire.read(); Serial.println(received);

#include <Wire.h> int x = 42; void setup() Wire.begin(0x08); // Join bus as slave at address 0x08 Wire.onRequest(sendData); // Call function when master requests

#include <Wire.h> void setup() Serial.begin(9600); Wire.begin();

void sendData() Wire.write(x);