static void SPIslave_taskFxn(UArg a0, UArg a1)
{
    SPI_init();
    SPI_Handle      slaveSpi;
    SPI_Params      spiParams;
    SPI_Transaction transaction;
    SPI_Params_init(&spiParams);
    spiParams.frameFormat = SPI_POL1_PHA1; // Rising edge
    spiParams.mode = SPI_SLAVE;
    spiParams.transferMode = SPI_MODE_BLOCKING;

    slaveSpi = SPI_open(CONFIG_SPI_SLAVE, &spiParams);

    while(1)
    {
        memset((void *) rxBuf, 0, SPI_MSG_LENGTH);
        transaction.count = SPI_MSG_LENGTH;
        transaction.txBuf = NULL;
        transaction.rxBuf = (void *) rxBuf;   

        SPI_transfer(slaveSpi, &transaction);
        ICall_free(rxBuf);
    }
}