#include <OneWire.h>

OneWire ds(10);

void setup(void) {
    Serial.begin(9600);
}

void loop(void) {
    byte i;
    byte present = 0;
    byte data[12];
    byte addr[8];

    if ( !ds.search(addr)) {
        Serial.print("Nema uredjaja.\n");
        ds.reset_search();
        return;
    }

    Serial.print("R=");

    for( i = 0; i < 8; i++) {
        Serial.print(addr[i], HEX);
        Serial.print(" ");
    }

    if ( OneWire::crc8( addr, 7) != addr[7]) {
        Serial.print("CRC is not valid!\n");
        return;
    }

    if ( addr[0] == 0x28)
    {
    Serial.print("Nije DS18B20\n");
    }
    else
    {
        Serial.print("Nepoznat: 0x");
        Serial.println(addr[0],HEX);
        return;
    }

    ds.reset();
    ds.select(addr);
    ds.write(0x44,1); // start conversion, with parasite power on at the end
    delay(1000); // maybe 750ms is enough, maybe not
    // we might do a ds.depower() here, but the reset will take care of it.
    present = ds.reset();
    ds.select(addr);
    ds.write(0xBE); // Read Scratchpad
    Serial.print("P=");
    Serial.print(present,HEX);
    Serial.print(" ");

    for ( i = 0; i < 9; i++) { // we need 9 bytes
        data[i] = ds.read();
        Serial.print(data[i], HEX);
        Serial.print(" ");
    }
    Serial.print(" CRC=");
    Serial.print( OneWire::crc8( data, 8), HEX);
    Serial.println();
}