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I don't see anything wrong so I recommend simulating this system so that you can watch the read and write masters to see what they are doing. You should only have to simulate around 300us worth of time.
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Oh.. Will take some time, but I will try :)
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Also when you compile the code how much room is being reported for the stack and heap? You said your memory is 32kB so I'm thinking you could be running out of memory. What you could try doing is putting just the heap into the on-chip memory and all the other code sections in SDRAM and see if the problem goes away (that would suggest that in your test case the stack and heap collided).
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The reported size is also about 32kB, but I've left the system vectors @ DDR RAM, only SGDMA is connected to the onchip-mem, so I suppose the whole system runs from DDR memory, but DMA stuff should go through onchip-mem? I've tried to connect only descriptors to onchip-mem, but that did not help either. How could I check the memory contents without simulation? Or maybe I should use fixed addresses and provide the address for SGDMA?
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