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How to check SPORT ping-pong dma

Question asked by misterdsp on Dec 29, 2012
Latest reply on Jan 4, 2013 by Harshit.Gaharwar

I was thinking it would be good to put in some runtime code in the DMA ISR to verify ping-pong buffers are correct i.e. the just DMA updated serial receive buffer is the next to be processed and sent to the transmit serial port by DMA. However, if the DMA ISR reads e.g. pCPSP0A, the DMA gets really screwed up. Is there any safe way at runtime to verify the DMA is running with correct buffer synchronization?