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monitoring eDMA activity in hardware

Question asked by Len Shustek on Dec 2, 2017
Latest reply on Dec 3, 2017 by Len Shustek

I'm using eDMA on a K66 to read data samples from external hardware at a pretty fast rate. The hardware generates a transfer request pulse, which I wired to one of the data port inputs and use its falling edge to trigger the DMA request .That works well.

 

But I would like to add some hardware to detect if ever the eDMA wasn't able to service a request in time before the next request arrives. Is there any way to configure an external hardware output that indicates when a DMA channel is serviced? It's happening too fast to monitor in software.

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