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Hello all, '5416 device. Using ABU mode, is there any way of determining which half of the buffer the DMA is currently writing (in other words which half of the buffer was just filled and generated the half or full buffer interrupt? We can of course use a simple flip-flop variable, which is toggled in the ISR, as a simple framer but if an interrupt is missed (for whatever reason) this system falls apart. Why would we miss an interrupt - who knows but it is not good to know of a failure mechanism in code you release is it. Can the DMA count registers be accessed in some fashion? I have looked through the documentation but did not find anything on this. Ian Wilson |
DMA ABU mode - Half-buffer interrupts
Started by ●November 25, 2002
