problem about sama5d3 dma mode

Discussion around products based on ARM Cortex-A5 core.

Moderator: nferre

Location: USA
Posts: 2131
Joined: Thu Apr 19, 2007 10:15 pm

Re: problem about sama5d3 dma mode

Wed Jul 06, 2016 10:06 pm wrote:

Code: Select all

define a memory region that is not cached, and allocate your buffers in that region. 
How to do this?
You would have to use the MMU and virtual memory.
Look at the mmu module in the SoftPack chip library. Regions of memory (such as SoC peripheral address space) are marked as non-cachable.

For details refer to the ARM Cortex-A5 Technical Reference Manual and ARM Architecture Reference Manual (rather than the Atmel SoC datasheet).


Return to “SAMA5D Cortex-A5 MPU”

Who is online

Users browsing this forum: No registered users and 2 guests