CCS/TMS320F28069F: CPU Idle Time

Hao Qin

Part Number: TMS320F28069F

Tool/software: Code Composer Studio

Hello,

How can test CPU idle time from CCS 9.0.1 for C2000, TMS320F28069F?

Thanks,

Hao

0 Devin Cottier over 5 years ago

Hi Hao,

Do you want to measure unused CPU cycles or the time the CPU is in the IDLE low power mode?

Either way, the most direct way to do this is to just toggle a GPIO when the CPU is unused and observe on a scope.

There are probably other methods depending on exactly what you are trying to measure and how your code is structured.

0 Hao Qin over 5 years ago in reply to Devin Cottier

Hello Devin,

I have a control project. If I want to test this project, should I add to toggle a GPIO or just keep it without any change?

Can you provide me a document about how to add a scope to observe the CPU idle time under CCS?

Thanks,

0 Devin Cottier over 5 years ago in reply to Hao Qin

Hi Hao,

You can try the methods described in the links in this e2e thread:

There are methods using both a GPIO and scope/logic analyzer, or pure software if you are more comfortable with that approach.

C2000 microcontrollers forum