topic Re: settings for ITCM=0 not accepted by mcuxpresso? in i.MX RT Crossover MCUs

settings for ITCM=0 not accepted by mcuxpresso?

nickwallis — Mon, 11 Jan 2021 18:14:58 GMT

Hi,

My project is not using any ITCM and so I want to set that to 0, and instead use all of the flexRAM for DTCM.

But when I try and set ITCM to 0 in the MCU settings window of mcuxpresso, it gives an error saying "Invalid memory configuration. SRAM_ITC has zero size". This is despite the fact that there is 0 usage of this memory region in the project.

How do I set ITCM size = 0 in mcuxpresso please?

thanks!
-Nick

Re: settings for ITCM=0 not accepted by mcuxpresso?

gusarambula — Mon, 11 Jan 2021 23:48:53 GMT

Hello Nick,

If you want to have ITCM as zero you would need to actually delete that memory region as you cannot define a memory area with a zero size.

In some i.MXRT Crossover Microcontrollers like in the i.MX1060, only part of the RAM can be reallocated. You can find more information on the link below:

https://community.nxp.com/t5/i-MX-RT-Knowledge-Base/Reallocating-the-FlexRAM/ta-p/1117649

I hope that this helps!

Regards,
Gustavo

Re: settings for ITCM=0 not accepted by mcuxpresso?

nickwallis — Tue, 12 Jan 2021 13:54:10 GMT

Hi @gusarambula of course, don't know why I didn't think of that! Thank you.

-Nick