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Kód: Vybrat vše

#include <Wire.h>

void setup() {
  Serial.begin(9600);
  while (!Serial);
  
  Serial.println("\nI2C Scanner");
}

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

  Serial.println("Scanning...");

  nDevices = 0;
  for(address = 1; address < 127; address++ ) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();

    if (error == 0) {
      Serial.print("Found device 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\n");
  } else {
    Serial.println("done\n");
  }

  delay(5000); // Wait 5 seconds for the next scan
}

Kód: Vybrat vše

 Wire.begin(D2, D1); // = Wire.begin(GPIO4,GPIO5)

Kód: Vybrat vše

 Wire.begin(2, 1);  //=Wire.begin(GPIO2,GPIO1;