Altera_Forum
Honored Contributor
Honored ContributorURGENT: Peripheral to Memory DMA Transaction
Hello, may I know how to transfer data from peripheral to memory using DMA? It is quite confusing from memory-to-memory transfer. please help! thanks!
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Altera_ForumHonored Contributor
Honored ContributorIt is a periphereal to memory transfer, as the DMA dosn't know about what your periphereal does with the data.
The difference between memory and periphereal access is, that the DMA increments addresses for memory access, but not for periphereal access. (Just a side note: If your periphereal implements a memory interface (e.g. like the Opencores I2S does), it would be neccessary to use memory-to-memory transfer.)
