C2000 Function profiling in CCSV4.x

Hi Tom,

The follow Wiki link for CCSv4 details the steps to use the Profiler feature:

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

Let us know if you have further trouble.

Thanks,
Patrick

I am on a live target, this describes profiling via the simulator?  Is that my only option, the simulator?  My code won't execute properly in the simulator.

I found this link:

http://processors.wiki.ti.com/index.php/C2000_Getting_Started_with_Code_Composer_Studio_v4

Problem is, I still don't see any information!   Can TI RESPOND TO THIS PLEASE!!!

Tom,

I apologize for the delay. I am getting you an answer. Please hang tight.

Patrick

Tom,

By default the profiler is not enabled for C28x.  If you are profiling in RAM, then it may be useful - please see this thread and wiki page describes how to enable it (towards the bottom.

http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/t/3445.aspx

http://processors.wiki.ti.com/index.php/C2000_Getting_Started_with_Code_Composer_Studio_v4#Enabling_Function_Profiling_with_CCSv4_for_C28x_Devices

If you are profiling in flash, then other methods will be more useful due to the limited breakpoints available.

When in the debug perspective go to Target -> Clock.  This will add a clock icon and count to the status bar.

• Run to a breakpoint at the start of the function.
• Double click on the clock - this will clear its value.
• Run to a breakpoint at the end of the function
• The clock will display the delta.

Another option customers like to use is to start a CPU timer counting at the SYSCLKOUT frequency.

• Read the clock before the call
• Read the clock after the call
• subtract the two to get a delta

Another option is to use a GPIO pin:

• Pull the pin low/high before the function
• Pull it high/low after the function
• Read the delta on a scope

I'll see that the profile wiki page is updated with this information.

Regards

Lori

Thanks Lori,

I was hoping to use the CCSV4 to simplify this, as the GPIO method is tedious.  Can you comment on the use of SYS BIOS and it's profiling capabilites?  Does it do a better job?

Thanks.

Tom --

SYS/BIOS provides 'Timestamp_get32()' API that can be used to benchmark code.  But, you need to modify your target code to include these APIs.

in your app.cfg:

Timestamp = xdc.useModule('xdc.runtime.Timestamp');

in your app.c file:

#include <xdc/runtime/Timestamp.h>

UInt32 t0, t1;

t0 = Timestamp_get32();

algo();

t1 = Timestamp_get32();

time = t1 - t0;

You can use Timestamp_getFreq() to get the frequency of the Timestamp counter.  On 28x, we use a timer which increments at CPU frequency, I think.

Regards,
-Karl-