Arduino Wire.h Library _hot_ Jun 2026

The library switches the microcontroller into "Master Receiver" mode. This is difficult because the Master must generate the clock signal, but the Slave controls the data.

Mastering the Art of I2C Communication with Arduino's Wire.h Library arduino wire.h library

void receiveEvent(int bytes) while(Wire.available()) char c = Wire.read(); Serial.print(c); arduino wire.h library