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Altera_Forum's avatar
Altera_Forum
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14 years ago

dma instability

Hi...i am tring to copy memory from sram to sdram using dma. For some reason some of the data dosent transfered... Are there any suggestions what to look for to solve this problem? Thanks. A...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If you are getting memory with malloc() that is either uncached, or for which you are doing explicit cache operations, you do need to make sure that you only use a cache-aligned part of the buffer.

The altera function to malloc() uncached data doesn't stop the cache line being shared!