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.