multiple masters controlling the same slave: for example, two ESP32 boards writing data to the same I2C OLED display.multiple slaves to one master: for example, your ESP32 reads from a BME280 sensor using I2C and writes the sensor readings in an I2C OLED display. I☬ means Inter Integrated Circuit (it’s pronounced I-squared-C), and it is a synchronous, multi-master, multi-slave communication protocol. Introducing ESP32 I2C Communication Protocol
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