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21469 SPORT delay line examples

Question asked by SDexter on Dec 20, 2015
Latest reply on Dec 24, 2015 by Harshit.Gaharwar



Does anyone have any examples for creating a delay line via DMA (SPORT->DDR) for the EZKIT 21469, or anyone know the most efficient way to arrange the DMA to perform this? I'm looking for some pointers as this should have been completed many times in the past.


Would it have to be completed in two steps (SPORT->Internal, Internal->External in delay line mode). Or could the SPORT chaining be arranged so it fills the external memory as a circular buffer and have the external->internal DMA offset to provide the delay (rather than using delay line mode).


I'm only looking for simple delay, not multi-tap or modulated.