Forcing buffer allocation in DDR2 heap

R&D10371

I have a buffer and I need to force its allocation in DDR2 heap memory because otherwise I get some errors. Well, I think this is the reason for the errors. But anyway, how can I force the allocation of a buffer (or variable in general) in the heap of a memory area (in this case DDR2)? Right now I'm using the 'pragma' command to force its allocation in DDR2, but it's been placed outside the heap. Any ideas?

Thanks in advance!

over 15 years ago

0 Mariana over 15 years ago

TI__Mastermind 24340 points

If you are using DSP/BIOS, please see MEM_alloc on page 282 of the document:

TMS320C6000 DSP/BIOS 5.32 Application Programming Interface (API) Ref Guide

0 MattLipsey over 15 years ago

Genius 3575 points

Remember, a heap is used for dynamically allocated memory, so you can't use pragma to assign its memory area. Are you trying to place a global in the heap (not allowed) or is this a variable dynamically allocated with mem_alloc (use linker command file to declare where to place the heap) or one of the dsp/bios memory allocation calls (use the tcf to configure heaps for each section)?

0 R&D10371 over 15 years ago in reply to MattLipsey

Intellectual 730 points

Thank you very much! It's not a global what I'm trying to place in the heap, but I didn't know the 'pragma' limitation in this case. I will reconsider it by using mem_alloc.

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Forcing buffer allocation in DDR2 heap