STM8s SPI Interrupt Handler

//SPI Interrupt
#pragma vector = 0x0C
__interrupt void SPI_Interrupt()
{
  if(SPI_SR_RXNE)
  {
    //Recieve buffer not empty
    return;
  }
  if(SPI_SR_TXE)
  {
    //Transmit Buffer Empty
    return;
  }
  if(SPI_SR_WKUP)
  {
    //Wakeup from halt by SPI SCK

    //Flag must be cleared by software
    SPI_SR_WKUP = 0;
    return;
  }
  if(SPI_SR_CRCERR)
  {
    //CRC error

    //Flag must be cleared by software
    SPI_SR_CRCERR = 0;
    return;
  }
  if(SPI_SR_MODF)
  {
    //Mode Fault

    //Must be cleared by Software
    //Both steps are required to clear this flag
    //See reference manual section 20.3.9 (page 269)
    (void)SPI_SR; //Read SPI_SR register
    //SPI_CR1 = ?; //Reset SPI_CR1
    //Todo: reset SPI_CR1
    return;
  }
  if(SPI_SR_OVR)
  {
    //Overrun

    //Must be cleared by software
    //Both reads are required to clear the flag
    //See reference manual section 20.3.9 (Page 270)
    (void)SPI_DR;
    (void)SPI_SR;
    return;
  }
}