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Altera_Forum's avatar
Altera_Forum
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21 years ago

DMA Example HAL

Have anyone a good sample how works with DMA in HAL mode? I need something like to project Streaming with irq and streaming transfer. Thank you so much for any help http://forum.niosforum.com/wor...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Just to clarify, that's _not_ an example of the use of the DMA HAL - it's a demonstration of how to do a DMA transaction with direct register reads and writes.

By the way, instead of

if ((IORD_ALTERA_AVALON_DMA_STATUS(SD_DMA_BASE)) && 0x01)

you want:

if ((IORD_ALTERA_AVALON_DMA_STATUS(SD_DMA_BASE)) & 0x01)

even better:

if ((IORD_ALTERA_AVALON_DMA_STATUS(SD_DMA_BASE))&

ALTERA_AVALON_DMA_STATUS_DONE_MSK)