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Altera_Forum
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16 years ago

memory-to-memory sgdma problem

Hello, I am testing the sgdma core by copy data from one on-chip-memory buffer to the other. However, I met a confusing problem that the actual_transfered_bytes is always zero. Can anybody he...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I just got the right result after I had taken your advices.

I used the function alt_remap_uncached() which is described in "Cache and Tightly Coupled memory" to transform the pointers, and the transfer size is indeed 40 instead of 10.

Thanks all, especially Daixiwen.