Arduino SPI Problem

/*Temperatursensor DS1722*/

#include <SPI.h>

int slaveselect = 10; //Pin 2 CE

int dataout = 11;     //Pin 5 SDO

int datain = 12;      //Pin 6 SDI

int clock = 13;       //Pin 3 SCLK

const byte RESOLUTION_12BIT = 0b11101110;

const byte CONFIG_WRITE_ADDRESS = 0x80;

const byte CONFIG_READ_ADDRESS = 0x00;

const byte TEMP_MSB_REG = 0x02;

const byte TEMP_LSB_REG = 0x01;

byte temperaturLOW;

byte temperaturHIGH;

int i;

void setup(){

  Serial.begin(9600);

  pinMode(slaveselect, OUTPUT);

  pinMode(clock, OUTPUT);

  SPI.begin();

  SPI.setDataMode(SPI_MODE1);

  /*

  MODE    CPOL    CPHA

   0       0       0

   1       0       1

   2       1       0

   3       1       1

  */

  SPI.setClockDivider(SPI_CLOCK_DIV64);

  SPI.setBitOrder(MSBFIRST);

  delay(1000);

  setRegister(CONFIG_WRITE_ADDRESS, RESOLUTION_12BIT);

  delay(1000);  

}

void setRegister(byte addresse, byte wert ){

  Serial.print("Adresse:");

  Serial.println(addresse, HEX);

  Serial.print("Wert:");

  Serial.println(wert, BIN);  

  digitalWrite(slaveselect, HIGH);  //SlaveSelect HIGH um Chip anzusprechen

  digitalWrite(clock, HIGH);

  delay(100);

  //Adresse und Wert via SPI übertragen:

  SPI.transfer(addresse);

  SPI.transfer(wert);

  digitalWrite(slaveselect, LOW); //SlaveSelect LOW um Chip abzuwählen

  delay(1000);

}

void readRegister(byte addresse) {

  byte Register = 0;

  Serial.print("Adresse:");

  Serial.println(addresse, HEX);

  Serial.print("Register Status:");

  digitalWrite(slaveselect, HIGH);  //SlaveSelect HIGH um Chip anzusprechen

  digitalWrite(clock, HIGH);  

  delay(100);

  SPI.transfer (addresse);

  Register = SPI.transfer(0x00);

  digitalWrite(slaveselect, LOW); //SlaveSelect LOW um Chip abzuwählen

  delay(1000);

  Serial.println(Register, BIN);

}

void loop() {

  readRegister(CONFIG_READ_ADDRESS);

}