#include <OneWire.h
const byte ONEWIRE_PIN = 2;
OneWire onewire(ONEWIRE_PIN);
void setup() {
while(!Serial);
Serial.begin(9600);
 }
void loop() {
byte address[8];
onewire.reset_search();
 while(onewire.search(address)) {
   if (address[0] != 0x28)
  continue;
   if (OneWire::crc8(address, 7) != address[7]) {
  Serial.println(F("Błędny adres, sprawdz polaczenia"));
  break;
   }
  for (byte i=0; i<8; i++) {
  Serial.print(F("0x"));
   Serial.print(address[i], HEX);
  if (i < 7)
  Serial.print(F(", "));
  }
  Serial.println();
  }
}