Arduino DS18S20 geziehlt auslesen!

#include <OneWire.h>

#include <DallasTemperature.h>

OneWire ds(2);

// Device Adressen der einzelnen Temperatursensoren angeben

DeviceAddress sensor1 = { 0x10, 0x38, 0x27, 0x57, 0x2, 0x8, 0x0, 0x79 };

DeviceAddress sensor2 = { 0x10, 0x16, 0x2E, 0x57, 0x2, 0x8, 0x0, 0x2F };

//DeviceAddress sensor3 = { 0x10, 0x11, 0x40, 0xC0, 0x1, 0x8, 0x0, 0x9A };

//DeviceAddress sensor4 = { 0x10, 0x77, 0x38, 0x57, 0x2, 0x8, 0x0, 0x3B };

char sensor1Name[] = "Sensor1: ";

char sensor2Name[] = "Sensor2: ";

//char sensor3Name[] = "Sensor3: ";

//char sensor4Name[] = "Sensor4: ";

int BlinkRate=0;                                         // Anzahl Blinken für Tests 

String Input="";                                         // Input von Serieller Schnittstelle 

String Befehl="NOP";                                     // Befehl aus Input 

int Parameter=0;                                         // Parameter aus Input 

int Wert=0;                                              // Rückgabewert Analog

char buffer[20] = "";                                    // Speicherbereich für Datenkonvertierung

void setup()

{

  Serial.begin(9600);

}  

void loop(void)

{

  if (Serial.available()) Einlesen();

  //Serial.println("Testausgabe");

  //delay(2000);

}

void Einlesen()

{

    while (Serial.available())

       {

       char ch = Serial.read();

       //Serial.print("Echo: ");

       //Serial.println(ch);

       Input=Input+ch;

       //Serial.println(Input);

       delay(10);

       }

       Befehl = Input.substring(0, 4);

       //Serial.println("Befehl: " + Befehl);

       Parameter = (Input.substring(4, 6)).toInt();

       //Serial.print("Parameter: ");

       //Serial.println(Parameter,DEC);

       ausfuehren();

       //Serial.println(Befehl + Parameter + " = " + Wert);

       Input="";

}

void ausfuehren()

{

  if (Befehl=="OW01")

  {

   float temp1 = getTemperature(sensor1);

   Serial.println(temp1);

  }

  if (Befehl=="OW02")

  {

   float temp2 = getTemperature(sensor2);

   Serial.println(temp2);

  }

  else

  {

   Serial.println("ERROR");

  }

}

void writeTimeToScratchpad(byte* address)

{

  //reset the bus

  ds.reset();

  //select our sensor

  ds.select(address);

  //CONVERT T function call (44h) which puts the temperature into the scratchpad

  ds.write(0x44,1);

  //sleep a second for the write to take place

  delay(1000);

}

void readTimeFromScratchpad(byte* address, byte* data)

{

  //reset the bus

  ds.reset();

  //select our sensor

  ds.select(address);

  //read the scratchpad (BEh)

  ds.write(0xBE);

  for (byte i=0;i<9;i++){

    data[i] = ds.read();

  }

}

float getTemperature(byte* address)

{

  int tr;

  byte data[12];

  writeTimeToScratchpad(address);

  readTimeFromScratchpad(address,data);

  //put in temp all the 8 bits of LSB (least significant byte)

  tr = data[0];

  //check for negative temperature

  if (data[1] > 0x80)

  {

    tr = !tr + 1; //two's complement adjustment

    tr = tr * -1; //flip value negative.

  }

  //COUNT PER Celsius degree (10h)

  int cpc = data[7];

  //COUNT REMAIN (0Ch)

  int cr = data[6];

  //drop bit 0

  tr = tr >> 1;

  return tr - (float)0.25 + (cpc - cr)/(float)cpc;

}