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Altera_Forum's avatar
Altera_Forum
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19 years ago

dma transfers between peripherals

Hello everybody! In a NiosII system with a DMA and two custom peripherals, I need to transfer data between these two peripherals with DMA. My problem is that I don't know how to configure D...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Use the alt_dma_txchan_ioctl() and alt_dma_rxchan_ioctl() to set the ALT_DMA_RX_ONLY_XXX and ALT_DMA_TX_ONLY_XXX settings. This should set the DMA controllers to read/write to a single location only instead of incrementing from the base address you give it.