MIMXRT1064: Run time CPU usage calculation

[zekelandon]

Hi,

I am trying to measure the run time statistics for thread running in FreeRTOS for MiMXRT1064-EVK board. I found this information for other board and it was mentioned that calculation differs with respect to #cpuport/board.

Could you help me how to do this for my board?

Regards,

Zeke

[ErichStyger]

Hi Zeke,

I see if I can come up with an example of it for you. Just give me some time.

Erich

[zekelandon]

Hi Erich,

Thank you for the support. Looking forward to hear from you.

Regards,

Zeke

[ErichStyger · Accepted solution]

Hi Zeke,

I have published an example:

FreeRTOS Task Runtime Statistics for NXP i.MX RT1064 | MCU on Eclipse 

I hope this helps,

Erich

[zekelandon]

Hi Erich,

I tried following your tutorial and found the definitions given below.

#define portCONFIGURE_TIMER_FOR_RUN_TIME_STATS()   McuRTOS_AppConfigureTimerForRuntimeStats()

#define portGET_RUN_TIME_COUNTER_VALUE()   McuRTOS_AppGetRuntimeCounterValueFromISR()

Are they the internal APIs? But the APIs and definitions being used are not available for me.

• configGENERATE_RUN_TIME_STATS_USE_TICKS
• McuRTOS_AppConfigureTimerForRuntimeStats()
• McuRTOS_AppGetRuntimeCounterValueFromISR()

Could you please clarify me on the above mentioned items in terms of NXP MCUXpresso SDK?

Regards,

Zeke

[ErichStyger]

They are not part of the FreeRTOS delivered with the SDK (it does not support the Systick as performance counter): you can ignore these as you can use the timer. You still need to configure the timer (of course).

[zekelandon]

Hey Erich,

Thank you. I was able to do it.

Regards,

Zeke

[FelipeGarcia]

Hello Zeke,

Same procedure should work for your board as well. If you have any further question please let me know.

Best regards,

Felipe

[zekelandon]

Hey Felipe,

I followed the tutorial but I am unable to setup as my device does not have

the timer/driver mentioned. Could you help me how to do the same with

hardware available in my board?

Regards,

Zeke

Thanks

[FelipeGarcia]

Hello Zeke,

You could use a different timer such as Quad Timer (TMR) instead. There are some examples included I our SDK that could help you to understand the basic configuration.

Regards,

Felipe