topic Re: Dual Core using the same peripherals in i.MX RT Crossover MCUs

Dual Core using the same peripherals

nampt — Tue, 28 Oct 2025 02:29:07 GMT

"I am using the MIMXRT1170 and building a dual-core project with MCUXpresso Config and IAR Workbench.

I'm wondering how to create the project. Should I configure, generate all peripherals in the master core (CM7) or on separate cores? And what should I do if both cores are using the same peripherals?"

Re: Dual Core using the same peripherals

mayliu1 — Tue, 28 Oct 2025 09:46:31 GMT

Hi @nampt ,

Thank you so much for your interest in our products and for using our community.

Please refer to this application note, it is very helpful.

https://www.nxp.com/docs/en/application-note/AN13264.pdf

Question1: I'm wondering how to create the project.

Answer1: For MCUXPresso IDE, you can import SDK demo as the following Fig show.

For IAR.

Question2: Should I configure, generate all peripherals in the master core (CM7) or on separate cores? And what should I do if both cores are using the same peripherals?

Answer2: Please note that multi-core can not using the same peripherals at same time.

Please refer to the AN13264 and AN13114

Wish it helps you.
If you still have question about it, please kindly let me know.

Best Regards
MayLiu

Re: Dual Core using the same peripherals

nampt — Tue, 28 Oct 2025 10:39:28 GMT

thank you for your answer.
You mean I can configure on separate cores without the same peripherals?
I need to share 1024 bytes data from CM4 to CM7. Should I use MU, SEMA4 or Free-RTOS Message Buffers for this application for best performance?
If using Free-RTOS how can I config receive data via IRS RTOS?

Re: Dual Core using the same peripherals

mayliu1 — Wed, 29 Oct 2025 08:55:14 GMT

Hi @nampt ,

I think you can refer to the SDK demo shown in below Fig.

Best Regards

MayLiu

Re: Dual Core using the same peripherals

nampt — Thu, 29 Jan 2026 03:14:49 GMT

Many thanks!