How to run dsplib functions in RAM with #pragma CODE_SECTION ?

Mark Hahn

Hi all,

I'm using several lib functions(DSPLIB, VLIB) in my code. I wanna run these lib functions in RAM.

As far as I know, these functions should be put into IRAM sections, like: #pragma CODE_SECTION( DSP_dotp, "ramsection" ).

But what should I do next? can anybody help me? Is there some PDF telling something about it?

Mark

over 12 years ago

0 Radhesh Bhat over 12 years ago

Genius 4590 points

HI Mark,

Once you have define pragma in the code, you need to make sure that the section is mapped to perticular intended memory. In this case ".ramsection" should reside in IRAM. So, in the linker command file, define as

.ramsection > IRAM

where IRAM corresponds to actual internal memory range.

0 Mark Hahn over 12 years ago in reply to Radhesh Bhat

Prodigy 85 points

Hi, Radhesh

Is there additional steps I should do? You know, I wanna have some functions of TI library (dsplib/vlib) run from the IRAM of DM6446.

Regards,

Mark

0 Radhesh Bhat over 12 years ago in reply to Mark Hahn

Genius 4590 points

HI Mark,

As I mentioned, apart from pragma you need to change the linker command file (*.cmd file) as described to tell compiler that certain portion of function should be placed in certain part of memory. Let me know if this is not clear.

0 Mark Hahn over 12 years ago in reply to Radhesh Bhat

Prodigy 85 points

Hi, Radhesh

Thanks for your reply!

I mean apart from your " change the linker command file (*.cmd file) " is there any other steps I should do?

Well, I wlill try what you told me.

Regards,

Mark

0 Radhesh Bhat over 12 years ago in reply to Mark Hahn

Genius 4590 points

No Mark. pragma statement and linker command file change should suffice you.

0 Mark Hahn over 12 years ago in reply to Radhesh Bhat

Prodigy 85 points

Hi, Radhesh

I've got it.

I really appreciate your help!

Mark

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How to run dsplib functions in RAM with #pragma CODE_SECTION ?