TMS320F28069M: SPI Communication Issue

void spi_init()
{
    SpiaRegs.SPICTL.all =0x0006;    // Enable master mode, normal phase, enable talk, and SPI int disabled.
    SpiaRegs.SPIBRR =0x007F;        // SPI Baud Rate = LSPCLK/128
    SpiaRegs.SPICCR.all =0x009F;   // 16-bit char bits, SPI loopback mode enabled, Relinquish SPI from Reset
    SpiaRegs.SPIPRI.bit.FREE = 1;  // Set so breakpoints don't disturb xmission

   SpiaRegs.SPIFFTX.all=0xE040;
   SpiaRegs.SPIFFRX.all=0x2041;
   SpiaRegs.SPIFFCT.all=0x0;
}

Void MotorPositionSaveTask()
{
    unsigned int MotorPosition = 0;
    unsigned int i = 0;

    while(1)
    {
        while(SpiaRegs.SPIFFTX.bit.TXFFST);         // Wait until the FIFO Buffer is empty and the chip select line is deactivated
        SpiaRegs.SPITXBUF = 0x06;                   // Set write enable latch (WREN)
        while(SpiaRegs.SPIFFTX.bit.TXFFST);         // Wait until the FIFO Buffer is empty and the chip select line is deactivated
        SpiaRegs.SPITXBUF = 0x02;                   // Write memory data (WRITE)
        while(SpiaRegs.SPIFFTX.bit.TXFFST >= 4);    // Wait until the FIFO Buffer is clear to send while keeping the chip select line is activate
        SpiaRegs.SPITXBUF = 0x00;                   // Memory address of write location (MSB)
        while(SpiaRegs.SPIFFTX.bit.TXFFST >= 4);    // Wait until the FIFO Buffer is clear to send while keeping the chip select line is activate
        SpiaRegs.SPITXBUF = MotorPosition++&0x00FF;      // Data to Write (LSB)

        for(i=0;i<4;i++)
            rdata[i] = SpiaRegs.SPIRXBUF;          // Read data (MSB)

        Task_sleep(1000);
    }
}