How to do a malloc on DSP in RDK mcfw for Davinci 8168?

chao wen

Hello,

I am programming DSP with RDK1.09 and found that in RDK mcfw, cmem and MMU is not enabled on DSP, so I can't do malloc on it, which would block algorithm programming. Could any expert give some advices about it? I would be very apprieciate.

over 13 years ago

0 chao wen over 13 years ago

Prodigy 210 points

could anybody help about it? is there a bios6 builtin function for it?

0 Marko Shink over 13 years ago in reply to chao wen

Genius 3475 points

Hi,

Can you use Syslink function : "Memory_alloc" .

From Syslink help :

Ptr Memory_alloc(IHeap_Handle heap, SizeT size, SizeT align, Ptr eb)

Allocates the specified number of bytes.
Parameters:

heap - Handle to the heap from which the memory is to be allocated. Specify NULL to allocate from local memory.
size - Amount of memory to be allocated.
align - Alignment constraints (power of 2)
eb - Not used. Pass as NULL.

Return values:
Pointer Success: Pointer to allocated buffer
NULL Failed to allocate memory

_________________
Regards.

0 Marko Shink over 13 years ago in reply to Marko Shink

Genius 3475 points

... or Bios "HeapMem_alloc"

Regards.

0 chao wen over 13 years ago in reply to Marko Shink

Prodigy 210 points

thanks, I am trying on both method to see if it can management a big buffer which was passed to DSP at runtime(DSP seems have only 14MB datasize, which is not big enough).

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How to do a malloc on DSP in RDK mcfw for Davinci 8168?