CCS 2.21 \ Mailbox specific memory segment

Sebastien ROLLE19

Hello,

i am looking for help in order to configure a mailbox to use a specific memory segment.

I use this code (which compile and link correctly)

extern Int SDRAM_HEAP;
MBX_Attrs mbxAttrs;
mbxAttrs.segid = SDRAM_HEAP;
g_hMailbox = MBX_create(sizeof(ear_trace), 16, &mbxAttrs);

However, it seems that all segment Id (SDRAM_HEAP, IRAM,... ) are set to the same value : 0

extern Int SDRAM_HEAP;
extern Int IRAM;
extern Int DSP_BIOS;
extern Int SDRAM_CODE;

I suspect that something is missing but i do not know what. I want to either specify a value or let CCS set a different value for each segment Id.

Does someone know how to correctly configure theses values ?

Thank

over 8 years ago

0 ToddMullanix over 8 years ago

TI__Guru* 96960 points

What version of BIOS are you using? Are you really using CC2.21?

Todd

0 Sebastien ROLLE19 over 8 years ago in reply to ToddMullanix

Prodigy 180 points

Yes, i am using version 2.21.00 of CCS. Bios version is : 4.90.270
/* "@(#) DSP/BIOS 4.90.270 01-08-04 (bios,dsk6713-c04)" */

0 ToddMullanix over 8 years ago in reply to Sebastien ROLLE19

TI__Guru* 96960 points

Which memory segments have a heap defined in it? The dynamically created kernel objects are allocated out of a heap.

0 Sebastien ROLLE19 over 8 years ago in reply to ToddMullanix

Prodigy 180 points

There is only one memory segment which have a heap defined in it. I want the Mailbox to allocated memory for objects in another memory segment which has no heap.

0 ToddMullanix over 8 years ago in reply to Sebastien ROLLE19

TI__Guru* 96960 points

You cannot do this. Dynamically created object can only be allocated out of a heap. Statically created objects (i.e. created in the graphical tool) can be placed memory segment without a heap.

0 Sebastien ROLLE19 over 8 years ago in reply to ToddMullanix

Prodigy 180 points

Think for your help.
Regards,
Sébastien

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CCS 2.21 \ Mailbox specific memory segment