     Wire.begin(1,3);
   }
   i2cInitiated = true;
-}
-
+}


bool i2cInitiated = false;
  
int16_t bus;
int16_t device;
int16_t size; 
String i2cBuffer;  

  Response when accessing the esp8266-01 root
*/ 
void rootResponse(){

  Serial.println("rootResponse");
  int error;
  int nDevices; 

  String msg = "<!DOCTYPE html><html><head><style>table, th, td {border: 1px solid black;border-collapse: collapse;}</style></head><body>";
  msg = msg + "Welcome to <b>ESP8266</b> and the <b>i2c interface</b><p><b>Hostname: </b>";
  msg = msg + String(hostName);
  msg = msg + "<p><b>Ip-address: </b>";
  msg = msg +  DisplayAddress(ipaddress);
  msg = msg + "<p>";
  msg = msg + "<table><tr><th><b>Address</b></th><th>0</th><th>1</th><th>2</th><th>3</th><th>4</th><th>5</th><th>6</th><th>7</th><th>8</th><th>9</th><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th><th>f</th>" ;
  // Loop over all i2c addresses to create a map of all connected devices
  Serial.println("Scanning i2c devices");
  if (!i2cInitiated) i2cBegin(bus);
  nDevices = 0;
  for(int address = 0; address < 127; address++ ){
    Serial.println(address);
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    // if (address == 0){msg = msg + "<tr>";}
    if (address % 16 == 0){msg = msg + "</tr><tr><td></td>";}

    if (address > 3){
      Wire.beginTransmission(address);
      error = Wire.endTransmission();
    }
    else {
      error = 4;
    }
     
    if (error == 0){
      if (address<16){
        msg = msg + "<td>0x0" + String(address, HEX) + "</td>";
        }
      else{
        msg = msg + "<td>0x" + String(address, HEX) + "</td>";
        }
      nDevices++;
      }
    else {
        msg = msg + "<td>----</td>";
      }  
    }

  msg = msg + "<td>----</td></tr></table></body>";
  server.send(200, "text/html", msg); 
} 

