[arduino code examples for T128M]-07 i2c scanner search online devices

Code:
// Made by KinCony IoT: https://www.kincony.com

// This sketch scans two I2C buses and prints all detected device addresses.

// IIC Bus-1: SDA - GPIO48, SCL - GPIO47

// IIC Bus-2: SDA - GPIO12, SCL - GPIO11



#include <Wire.h>



// Create two I2C bus objects

TwoWire I2C_BUS1 = TwoWire(0);

TwoWire I2C_BUS2 = TwoWire(1);



// Scan function for a specific I2C bus

void scanI2CBus(TwoWire &bus, const char* busName) {

  Serial.println();

  Serial.print("Scanning ");

  Serial.print(busName);

  Serial.println(" at 100kHz...");



  byte error, address;

  int nDevices = 0;



  for (address = 1; address < 127; address++) {

    bus.beginTransmission(address);

    error = bus.endTransmission();



    if (error == 0) {

      Serial.print("I2C device found at address 0x");

      if (address < 16)

        Serial.print("0");

      Serial.print(address, HEX);

      Serial.println("  ✓");

      nDevices++;

    } else if (error == 4) {

      Serial.print("Unknown error at address 0x");

      if (address < 16)

        Serial.print("0");

      Serial.println(address, HEX);

    }

  }



  if (nDevices == 0)

    Serial.println("No I2C devices found.");

  else

    Serial.println("Scan completed.");

}



void setup() {

  Serial.begin(115200);

  delay(1000); // Wait for serial to initialize



  // Initialize IIC Bus-1 (GPIO48 = SDA, GPIO47 = SCL) at 100kHz

  I2C_BUS1.begin(48, 47);



  // Initialize IIC Bus-2 (GPIO12 = SDA, GPIO11 = SCL) at 100kHz

  I2C_BUS2.begin(12, 11);



  // Start scanning both buses

  scanI2CBus(I2C_BUS1, "IIC Bus-1");

  scanI2CBus(I2C_BUS2, "IIC Bus-2");

}



void loop() {

  // Nothing to do in the loop

}