OLED液晶屏幕（0）自动获取12ic地址液晶屏幕

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烧录

串口可以看到输出的地址

#include <Wire.h>
 
void setup(){
  Wire.begin();
  Serial.begin(9600);
  Serial.println("
I2C Scanner");
}
void loop(){
  byte error, address;
  int nDevices;
  Serial.println("Scanning...");
  nDevices = 0;
  for (address = 1; address < 127; address++ ){
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);
    error = Wire.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("Unknow 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("done
");
  delay(5000); // wait 5 seconds for next scan
}