Compiler: Alternative for the FOR loop

harish boyina

Tool/software: TI C/C++ Compiler

Hi,

I am running a FOR loop for 120 times and moving the data for every 1ms in [120] size array. It is taking too much time while running from FLASH. I am not able to run it from RAM as I don't have enough space for it. Can you suggest any alternative for the FOR loop to reduce the running time to accomplish the above task?

over 5 years ago

0 Keith Barkley over 5 years ago

Guru 35580 points

Do you have optimization turned on?

Your next step is probably assembler.

0 George Mock over 5 years ago in reply to Keith Barkley

TI__Guru**** 232700 points

In your other posts, you show you are working with a C28x system. Is that the case here?

Thanks and regards,

-George

0 harish boyina over 5 years ago in reply to George Mock

Intellectual 365 points

Yes, i am working on C28x system.
How assembler reduce time-consuming by the FOR loop from "C" ??
I dont want do optimization turned on, as i am using boot loader if I use optimization which effects the boot loader.

0 George Mock over 5 years ago in reply to harish boyina

TI__Guru**** 232700 points

harish boyina said:
I dont want do optimization turned on

The only other alternative is to manually write it in assembly code.

Thanks and regards,

-George

0 harish boyina over 5 years ago in reply to George Mock

Intellectual 365 points

Hi Mock,
I am not much familiar with assembly program, can you send piece of code for the FOR loop for C28x or can you refer any document?

0 Jan D over 5 years ago in reply to harish boyina

Guru 73255 points

Hi,

Instruction Set for C28x you find here http://www.ti.com/lit/ug/spru430f/spru430f.pdf. It may be useful instructions like a LOOPNZ, LOOPZ, BANZ, etc.

Jan

0 George Mock over 5 years ago in reply to harish boyina

TI__Guru**** 232700 points

harish boyina said:
I am not much familiar with assembly program, can you send piece of code for the FOR loop for C28x or can you refer any document?

Please consider installing C2000Ware. It contains many examples of C28x assembly code. Search for the files with the extension .asm.

Thanks and regards,

-George

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Compiler: Alternative for the FOR loop