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Altera_Forum's avatar
Altera_Forum
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12 years ago

SGDMA Descriptors not being set

So i am having difficulty getting with my SGDMA both sending and receiving. So from doing some debugging it looks like even after i call: alt_avalon_sgdma_do_sync_transfer(transmit_DMA, &transmit_d...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

If your transmit_descriptors variable is also located in the main memory, then it should work. You can also place them in the TSE's descriptor memory if you want (just make sure you aren't using the first two positions, which are used by the TSE driver!) but then you will need to connect the two SGDMA descriptor masters to that memory.