SRAM-DTC usage anormally huge when I use i.MXRT106x example generated code on evaluation kit ?

[scocmr]

Hi,

When I build the NXP GPIO Polling example from Simulink, I am surprised by the SRAM-DTC used percentage in the final report :

As you can see, half of the SRAM_DTC is used for this example app. It's huge.

On a second hand, we have developped a small similar application in C using the MCUxpresso IDE (without Simulink and genrated code features).

For information, our app is very simple and it just flashes a LED through a GPIO pin.

When we build this application from the IDE, here is the mem report :

It's better and more realistic.

Then, my question is : why mem usage is huge when I use NXP model-based example ?

thanks in advance.

BR,

Sebastian

[Lambert1]

A debt of gratitude is in order for tending to this subject. I was searching for the data with respect to the equivalent yourtexasbenefits.

[scocmr]

Hi Alexandra,

I'm surprised that the linker files of my NXP toolbox would be outdated because I have installed the latest available toolbox from the NXP support site.

May be, a new version is in preparation with up-to-date linker files and will be proposed very soon

Anyway, I'll try again with your files as soon as I get back to my office (home working until the end of this week).

I'll keep you informed.

Thank you very much for your support.

Have a nice day.

BR,

Sebastian

[nxa11767 · Accepted solution]

Hi Sebastian,

The memory allocation is driven by the linker files settings. It looks like the linker files used in the toolbox are a little outdated. Please try with the files in the zip file attached  - for MIMXRT1062 (IMXRT-1060 board) and for MIMXRT1064 (IMXRT-1064 board). Copy the linker files in the next locations:

- first in [Toolbox Installation Folder]\mbdtbx_imxrt\linker_files\default\flash 

- and if you already have the <model_name>Config folder or your model, replace the appropriate linker files in  <model_name>Config/linker_files/flash.

BR,

Alexandra

[scocmr]

Hi Alexandra,

Good news, the patched linker files work as expected.

In order to compare, here are the generation reports (on the left without the patch and on the right with it) :

As you can see, with your patch, the SRAM_DTC uses only 6.78% for our test application.

It seems correct now

A last question, do you think this patch will be included in a NXP Toolbox release soon ?

Thank you very much for your help !

BR,

Sebastian

[nxa11767]

Hi Sebastian,

We are planning a new IMXRT release somewhere at the beginning of Q2 next year. Is this ok with you?

Best regards,

Alexandra

[scocmr]

Hi Alexandra,

No problem, it's OK for us.

Thank you for this information.

Have a nice day.

BR,

Sebastian