esp32_Adafruit_BusIO/examples/i2c_address_detect/i2c_address_detect.ino

#include <Adafruit_I2CDevice.h>

Adafruit_I2CDevice i2c_dev = Adafruit_I2CDevice(0x10);

void setup() {
  while (!Serial) {
    delay(10);
  }
  Serial.begin(115200);
  Serial.println("I2C address detection test");

  if (!i2c_dev.begin()) {
    Serial.print("Did not find device at 0x");
    Serial.println(i2c_dev.address(), HEX);
    while (1)
      ;
  }
  Serial.print("Device found on address 0x");
  Serial.println(i2c_dev.address(), HEX);
}

void loop() {}