Altera_Forum
Honored Contributor
Honored ContributorNios II Uart with DMA
In my Nios II system I want to use Uart with DMA. Are there some tutorials or example projects about this topic. I'm using Quartus 13.0. Thanks.
Forum Discussion
Altera_ForumHonored Contributor
Honored ContributorIt doesn't really make sense to use DMA with a UART. A DMA engine doesn't have a mechanism to stop sending and wait for characters to go out, or wait for input characters to be present before transferring data. The FIFO in a standard UART is so small that the time taken to set up a DMA transfer would be greater than the time to fill the FIFO with a sofware loop.
praveenkumar
Occasional Contributor
Occasional Contributorare u saying we cant use dma with uart
