Question about DMA and ADC usage.

Hi, Source and destination pointers are alright. What about the rest of DMA configuration?
you can trigger the DMA after all the ADC results are available.
There is an example in controlSuite to explain the ADC transfer using DMA.
You can refer to C:\ti\controlSUITE\device_support\f2833x\v140\DSP2833x_examples_ccsv5\adc_dma.

Ok. So, you do not want interrupts from DMA after every 16 ADC result transfer.
Try the following -
Configure the DMA Burst Size to 16 and Transfer size to 16 (i.e. 16 bursts in one transfer).
That way you'll get only one interrupt at the end of complete transfer.
Make sure Source address wraps back to the first ADC result reg after every burst and Dest. address wraps back after end of transfer (16-bursts).

Thank you!

As your suggestion, I try it, but the result is fail,too.

my config is:

DMACH3AddrConfig((Uint16*)&ADCbufferA[0],(Uint16*)&AdcMirror.ADCRESULT0);
 DMACH3BurstConfig(15,1,1);
 DMACH3TransferConfig(15,1,1);
 DMACH3WrapConfig(15,1,255,1);
 DMACH3ModeConfig(DMA_SEQ1INT,
               PERINT_ENABLE,
               ONESHOT_DISABLE,
               CONT_ENABLE,
               SYNC_DISABLE,
               SYNC_SRC,
                  OVRFLOW_DISABLE,
                  SIXTEEN_BIT,
                  CHINT_END,
                  CHINT_ENABLE);
 StartDMACH3();

The result is:

What exactly is getting copied in your code from source to destination. What is your observation from debug regarding this?
Idea is to play with source and destination poinsters, burst/transfer size options. 

More details in : www.ti.com/.../sprufb8d.pdf

Figure 5. DMA State Diagram

Source/Destination Address Pointers operation is also described in Page 17-18 of the above document.

OK!

Thanks！