#include <Wire.h>

// MPU6050 AD0
// 通过AD0引脚设置为高电平改变地
const uint8_t mpuAd0Pin = 7;

// 定义I2C地址
#define MPU6050_ADDR    0x69  // MPU6050地址(通过AD0引脚设置为高电平改变地址)
#define DS1307_ADDR     0x68  // DS1307地址
#define OLED_ADDR       0x3C  // OLED显示屏地址

void setup() {

  pinMode(mpuAd0Pin, OUTPUT);
  // digitalWrite(mpuAd0Pin, HIGH);

  Wire.begin();
  Serial.begin(115200);
  Serial.println("I2C扫描器");
}

void loop() {
  byte error, address;
  int devicesFound = 0;
  
  Serial.println("扫描中...");
  
  for(address = 1; address < 127; address++) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    
    if (error == 0) {
      Serial.print("发现I2C设备，地址: 0x");
      if (address < 16) {
        Serial.print("0");
      }
      Serial.println(address, HEX);
      devicesFound++;
    }
  }
  
  Serial.print("扫描完成，发现 ");
  Serial.print(devicesFound);
  Serial.println(" 个设备");
  delay(5000);
}