// i2c Address search result : I found 0x1E,

// Line connected : SDA to 4, SCL to 5 (Connection is important since all pins can be used as I2C)
// for Compass HMC5883L on ESP32-S3 Supermini

#include "Wire.h"

void setup() {
  Serial.begin(115200);
  Wire.begin(4, 5); // SDA:4, SCL:5
  while (!Serial) {delay(100);};
}

void loop() {
  byte error, address;
  int nDevices = 0;

  delay(5000);
  Serial.println("Scanning for I2C devices ...");
  for (address = 0x01; address < 0x7f; address++) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    if (error == 0) {
      Serial.printf("I2C device found at address 0x%02X\n", address);
      nDevices++;
    } else if (error != 2) {
      Serial.printf("Error %d at address 0x%02X\n", error, address);
    }
  }
  if (nDevices == 0) {
    Serial.println("No I2C devices found\n");
  } else {
    Serial.println("done\n");
  }
}