Measurements with coremark on the IMX8QXP MEK

[teo1]

Hello,

I'm working on the IMX8QXP MEK and I would like to take some consumption measures on this card.

I think that the document "i.MX 8QuadXPlus Power and Performance" is really helpfull but there are some points I don't get.

First, I would like to know how can I put the card in each KS (Key State mode), do I have to shut down the components manually or is there a program that can put the card in the KS I want automatically?
My second issue is to understand how I can use Coremark on this board. I have installed IAR IDE and downloaded coremark-main file but I can't reach to use it to take some measures.

Could someone help me please?
Thanks a lot for your help,

Best regards,
Teo

[igorpadykov]

Hi Teo

for using coremark (sorry for m4 such documentation is not available) one can try to follow

sect.4.2.1. CoreMark only, sect.8.2.2. Steps – Coremark/Dhrystone/Stream/WhetstoneSP

AN12338  i.MX 8QuadXPlus Power Consumption Measurement

For M4 one can try to adapt CoreMark library to SDK using AN12284

https://www.nxp.com/doc/AN12284

Best regards
igor

[teo1]

Hello Igor,

Thank you for your fast answer.

I already tried to use the documents you suggested me, but when I try to run the code in the sect 8.2.2 in "Power consumption Measurement" document, I get the following answer when I run the line : echo 1 > /sys/class/graphics/fb0/blank; : "No such file or directory".

Furthermore could you explain me what you mean by "adapt Coremark library to SDK"?

Best regards,
Teo

[igorpadykov]

> what you mean by "adapt Coremark library to SDK"?

port this library to M4 SDK_MEK-MIMX8QX using sect.2.1 Porting CoreMark library AN12284

it mentions IAR Workbench IDE.

Best regards
igor

[teo1]

I don't find any project  as the lpc5500_coremark_iar\coremark.eww one which is mentionned in the document. That is why I am blocked at this point.

I thought I would fin a project in the coremark_main file but I can't find any project to load on IAR.

Best regards,
Teo

[igorpadykov]

suggest to post it to lpc community:

https://community.nxp.com/t5/LPC-Microcontrollers/bd-p/lpc

Best regards
igor