Forum Discussion

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

Changing DMA stread read to stream write

Hello, I have the following fully functional code that gives as output: Content of TX DDR2 SDRAM after DMA operation Address 0xC000000: 1 Address 0xC000004: 2 Address 0xC000008: 3 Address ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I think I found the root of the problem.

It is simply not possible to write stream from memory to memory, since the DMA controller only has 1 control register. The set-up for the read channel will overwrite the set-up for the write channel.