STM8s SPI Initialisation

void InitSPI()
{
  /*
    Possible Clock Speeds
    SPI_CR1_BR    Clock Speed     Default Result (Fmaster = 16Mhz)
    0 (0x00)      Fmaster / 2     8Mhz
    1 (0x01)      Fmaster / 4     4Mhz
    2 (0x02)      Fmaster / 8     2Mhz
    3 (0x03)      Fmaster / 16    1Mhz
    4 (0x04)      Fmaster / 32    500Khz
    5 (0x05)      Fmaster / 64    250Khz
    6 (0x06)      Fmaster / 128   125Khz
    7 (0x07)      Fmaster / 256   62.5Khz
  */

  SPI_CR1_BR = 0;       //Clock Speed, see table above for values
  SPI_CR1_CPOL = 0;     //Clock Idle LOW
  SPI_CR1_CPHA = 1;     //First Clock Edge is data
  SPI_CR1_LSBFIRST = 0; //MSB First
  SPI_CR1_MSTR = 0;     //SPI Slave
  SPI_CR1_SPE = 1;      //Enable SPI

  SPI_CR2_SSI = 0;      //Slave Mode, NSS/CS Pin
  SPI_CR2_SSM = 0;      //Software NSS/CS managment disabled
  SPI_CR2_RXONLY = 0;   //Full Duplex TX&RX
  SPI_CR2_CRCNEXT = 0;  //Next value to transmit is not CRC
  SPI_CR2_CRCEN = 1;    //CRC Calculation enabled
  SPI_CR2_BDOE = 0;     //Not Used. Only used when BDM = 1
  SPI_CR2_BDM = 0;          //2 Wire Unidrectional Mode
}