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Altera_Forum's avatar
Altera_Forum
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15 years ago

URGENT: 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!
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Yes, SOPC. I want to transfer from SDRAM to this block then from this block to SDRAM back.

Update: I tried to run it in Nios II IDE, but the result i got were wrong...

correct result: 0, 2, 4, 6, 8....298

result obtained: 294, 296, 0, 2, 4...292

i am adding number 0 till 149... suppose 294 = 147+147

is it because of the delay in fetching the result previously? if yes, how to solve it? thanks!