Performance impact of Cross Trigger Interface on TMS570LS4357

Libo Luo

Hello Forum team,

on a TMS570LS4357 device, the CTI Interfaces CTI1, CTI2, CTI3 and CTI4 have to be enabled so that the RTI free running counter stops if SW is halted in debug mode. Otherwise the RTI free running counter continues counting, and we can't debug (for example, the watchdog reset is triggered as soon as the debugger is connected.).

We have so far enabled the CTI interfaces only the CPU is in debug mode.

The code looks like this:

if (cpu is in debug mode)

{

enableCti1();

enableCti2();

enableCti3();

enableCti4();

}

Now my question: If we always enable the CTI interfaces (no matter in debug mode or not), will this have impact on the CPU performance?

Thank you!

Best regards,

Libo

over 10 years ago

0 Chuck Davenport over 10 years ago

TI__Guru 59540 points

Hi LIbo,

I have forwarded your question to one of or TMS570LC4xxx experts. They should address your questions shortly.

0 Zhaohong Zhang over 10 years ago in reply to Chuck Davenport

TI__Mastermind 22715 points

Libo,

Yopu can set up CTI anywhere in your application. CTI just configureds how the debug request signals are routed. There is no impact on CPU performance.

Thanks and regards,

Zhaohong

0 Libo Luo over 10 years ago in reply to Zhaohong Zhang

Intellectual 940 points

Hi Zhaohong, Hi Chuck,

thanks a lot for the quick answer!

Best regards,

Libo

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Performance impact of Cross Trigger Interface on TMS570LS4357