no SPI clock on the oscilloscope

Hi

Im using TMS570LS1224 with an ADS1271 (no chip select and no SIMO)

I was trying to test the SPI by checking the SCLK but nothing... I don't know whats happening... I also checked for the examples on the Halcogen and didn't found any difference on the instructions... the only difference is that Im using SPI5 instead of 1. I already checked the congifuration and everything but still no clock....

any idea of why this could be happening?? shouldnt be there something like a "start clock" or something? what am I missing??

 while(blocksize != 0U)
    {
        if((spi->FLG & 0x000000FFU) != 0U)
        {
           break;
        }

        if(blocksize == 1U)
        {
           Chip_Select_Hold = 0U;
        }
        /*SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
        Tx_Data = *srcbuff;

        spi->DAT1 =((uint32)DataFormat << 24U) |
                   ((uint32)ChipSelect << 16U) |
                   (WDelay)           |
                   (Chip_Select_Hold) |
                   (uint32)Tx_Data;
        /*SAFETYMCUSW 567 S MR:17.1,17.4 <APPROVED> "Pointer increment needed" */
        srcbuff++;
        /*SAFETYMCUSW 28 D MR:NA <APPROVED> "Hardware status bit read check" */
        while((spi->FLG & 0x00000100U) != 0x00000100U)
        {
        } /* Wait */
        //SAFETYMCUSW 45 D MR:21.1 <APPROVED> "Valid non NULL input parameters are only allowed in this driver" */
        *destbuff = (uint16)spi->BUF;
        /*SAFETYMCUSW 567 S MR:17.1,17.4 <APPROVED> "Pointer increment needed" */
        destbuff++;

        blocksize--;
    }

also... putting a breakpoint under the red lines (on destbuff++), I never get out of there... this is supposed to be the Polling method (I can't use the interrupt method because on the application Im already on a higher level interrupt, so no scape from there until finish) but I have no idea of what is it waitting there.... on the example code there is no reference of this part...

thanks!