XMEGA SPI Registerfehler

int spi_init_master(unsigned char port)

{

    PORTC_DIR |= (1<<DD4); ///SS pin as in/out must be hold high

    PORTC_OUT |= (1<<DD4); //Driven high

    PORTC_DIR |= (1<<DD5); //MOSI pin as output

    PORTC_DIR &= ~(1<<DD6); //MISO pin as input

    PORTC_DIR |= (1<<DD7); //SCK pins as output

    SPIC.CTRL = 0x00;

    SPIC.CTRL|=(1<<SPI_CLK2X_bp);              //Doubles Frequency in Master Mode

    SPIC.CTRL|=(1<<SPI_DORD_bp);              //Data Order 1=LSB first

    SPIC.CTRL|=(1<<SPI_MASTER_bp);              //1=Master Mode

    SPIC.CTRL&=~((1<<SPI_MODE0_bp)|(1<<SPI_MODE1_bp));      //SPI Mode Rising Sample, Falling Setup

    SPIC.CTRL|=(1<<SPI_PRESCALER0_bp)|(1<<SPI_PRESCALER1_bp);  //11=clkper/64

    SPIC.INTCTRL|=(1<<SPI_INTLVL1_bp);    //interrupt level is middle

    SPIC.INTCTRL&=~(1<<SPI_INTLVL0_bp);

      SPIC.CTRL|=(1<<SPI_ENABLE_bp);  

int spi_master_send(unsigned char SPI_data, unsigned char port)

{

    if(!spi_master_busy(0,'C',1))

      {

      SPIC.DATA|=SPI_data;  // sende Daten

      spi_master_busy(1,'C',0);//SPI busy

      }

 }

bool spi_master_busy(bool write, unsigned char port, bool read) //wenn read 1 wird gelesen bei 0 wird write geschrieben

{

  static bool SPIC_busy=0;

      if(!read)

      {

      SPIC_busy=write;

      }

    else return SPIC_busy;

}