Time profiling of code execution in CPU & CLA in CCS v6, beta 3 (or 4) - on F2837xD

Hi Roni,

You can check this link: http://processors.wiki.ti.com/index.php/Profiling_on_C28x_Targets

Regards,

Gautam

Hi Gautam,

I saw this link, but it is a reatively "old" link  - I need the info for  F2837xD & CCS v6 (beta 3). Also, I will need to perform time profiling not only on each of the Dual-CPU but also on the CLA.

Can you guide me to the information I need?

Thanks

Roni

I will need to perform time profiling not only on each of the Dual-CPU but also on the CLA.

Check this out: http://processors.wiki.ti.com/index.php/Control_Law_Accelerator_%28C2000_CLA%29_Debug_on_CCS_FAQ#Q:_How_can_I_profile_my_CLA_code.3F

Regards,

Gautam

1. Regarding the CLA - I will look into it. On a first look - is the PWM the only option or do I have other ways?

2. My first steps (even before the CLA) are to first time profile stuff on each of the dual-CPUs of F2837xD - using CCSv6 (beta 3) - can you provide me with some info/doc?

Thanks

Roni

Hi Roni,

I can't comment on CLA but for your second question, there is a the profile clock which you can use to count cycles from point A to point B. Perhaps this is what you are looking for?

http://processors.wiki.ti.com/index.php/Profile_clock_in_CCS

Thanks

ki

Hi Ki,

Using CCSv6 - beta 4, working on the F2837x, I've tried following the instructions to use the profile clock.

It seems to be enabled & shown in the right corner of the status bar. I set it to 'cycles' (actually the only option I could choose) and 'Manual'.

BUT:

a. Sometimes I could & sometimes I couldn't set more than one breakpoint (when I execute from FLASH). Why is it inconsistent? When I've failed to set the 2nd breakpoint I got the following error box message:

"Breakpoint Manager - Error enabling this function: This task cannot be accomplished with the existing AET resource"/

b. Even if I execute with one or two breakpoints, I don't see the counter proceed at all, and the clock remain on '0'.

What am I missing to activate it properly? I tried both execution on RAM & FLASH.

c. Are there any other means to time-profile - for example - using the  CPU Timer - is is possible? Any example how to do it?

d. What are the differences - advantages/disadvantages between the two methods - profile clock & using CPU timer?

Thanks

Roni

Roni,

There is a related thread. It may have all the answers you seek. Please read the entire thread and let me know if you have any additional questions:

http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/p/330128/1151351.aspx

Thanks

ki

Hi Ki,

Well, reading the suggested thread, I saw the advice to use a 'Count Event' through the 'Breakpoint' view.

This seems to be working! :-]

Limitation is that if program is executed fom FLASH, then you can only set one breakpoint and not two,

so it is a little uncomfortable, but still works fine.

(*) I still don't understand - why the option of Profile Clock isn't working?

My additional question now is:

How can I use the alternative way of using CPU Timer?  What changes should I do to my project ?- except adding inclusion of file F2837xD_CpuTimers.h  - which are the relevant *.c files I should add in oder to use functions like: InitCpuTimers(), StartCpuTimer0(), etc.   

Thanks

Roni