DMA RAM to RAM transfer does not work

Hi all,

I run into a problem that MibSPI RAM to L2 RAM DMA does not work. Thus, I am trying a simple case which transfers A array to B array.The MCU is RM57L843. I am stuck at here for days. Any help appreciated.

Here is a simple try out for DMA experiment.

I am expecting when set the software trigger to channel 1, then data should be transferred from array a to array b. However, there is no such thing happened. The array B keeps untouched.

     uint16 a[22],b[22];
     int i = 0;

    // assign values to array A
     for (i = 0 ; i < 22; i ++ )
     {
         a[i] = i;
     }

     // Initialize DMA Channel 1
     g_dmaCTRLPKT1.SADD      = (uint32)a;    /* source address             */
     g_dmaCTRLPKT1.DADD      = (uint32)b;    /* destination  address       */
     g_dmaCTRLPKT1.CHCTRL    = 0;                 /* channel control            */
     g_dmaCTRLPKT1.FRCNT     = 1;                 /* frame count                */
     g_dmaCTRLPKT1.ELCNT     = 22;                  /* element count              */
     g_dmaCTRLPKT1.ELDOFFSET = 0;                 /* element destination offset */
     g_dmaCTRLPKT1.ELSOFFSET = 0;                 /* element source offset */
     g_dmaCTRLPKT1.FRDOFFSET = 0;                 /* frame destination offset   */
     g_dmaCTRLPKT1.FRSOFFSET = 0;                 /* frame source offset   */
     g_dmaCTRLPKT1.PORTASGN  = PORTA_READ_PORTA_WRITE;
     g_dmaCTRLPKT1.RDSIZE    = ACCESS_16_BIT;     /* read size                  */
     g_dmaCTRLPKT1.WRSIZE    = ACCESS_16_BIT;     /* write size                 */
     g_dmaCTRLPKT1.TTYPE     = FRAME_TRANSFER ;   /* transfer type              */
     g_dmaCTRLPKT1.ADDMODERD = ADDR_INC1;         /* address mode read          */
     g_dmaCTRLPKT1.ADDMODEWR = ADDR_INC1;       /* address mode write         */
     g_dmaCTRLPKT1.AUTOINIT  = AUTOINIT_OFF;       /* autoinit                   */

     dmaREG->GCTRL |= 0x00000001U; /* DMA software reset */

     dmaSetCtrlPacket(DMA_CH1,g_dmaCTRLPKT1);

     dmaEnable();

while(1)
{
    dmaSetChEnable(DMA_CH1, DMA_SW); // trigger DMA transfer
    Delay(400000);
}

Here shows the result, which B does not get anything from A.

I think the configuration part is correct as there the Channel configuration is set.

The part I do not understand is the CSADDR register. I should be the current source address. However, I have no idea why the number is not even close to expected source address.

For more in detail, I paste the register values after Delay(400000);