How to calculate execution time of code in seconds on dm648

Kashif Zia

Hi,

I have a DaVinci DM648 board and i want to calculate the execution time of my video analytics code. so plz let me know what i shud use to find start and end time of execution on DM648 EVM board.

Thanks

over 14 years ago

0 desouza over 14 years ago

TI__Guru**** 171839 points

Hi,

If you are using the profiler clock, check the thread below:

http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/t/69091.aspx

Cheers,

Rafael

0 Kashif Zia over 14 years ago in reply to desouza

Prodigy 20 points

Hi,

Thanks for replying. But i want to calculate the start and end time of a part of code by using some functions and not by using code composer studio's profiler.. Please let me know if there's any function which i can use to caluculate the execution time... I have tried using clock() function but its not working....

Thanks.

0 Thomas9070 over 14 years ago in reply to Kashif Zia

Expert 1575 points

Hi,

I think you need to use a timer to do that, a document is available here: http://www.ti.com/lit/ug/spruel0b/spruel0b.pdf

In my application I reserved one of the DM648 timers for that purpose. It is configured as chained 32bit timer. I have a function to get a timestamp (in microseconds). To measure the duration of a function I take 2 timestamps, one at the beginning and one at the end of the function and know how long it took,

bye,

Thomas

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How to calculate execution time of code in seconds on dm648