MCUXpresso SDKのトピックRe: RT1170 EVKB Dual-Core Example: CM7 Hangs at Startup

RT1170 EVKB Dual-Core Example: CM7 Hangs at Startup

FranklinOmo — Wed, 01 Jul 2026 10:43:20 GMT

Hi everyone,

I have just started working with the RT1170 EVKB board and am trying to run the multicore Hello World example located in:

boards/evkbmimxrt1170/multicore_examples/hello_world

I am using the MCUXpresso SDK v26.03.00 (latest available version).

When I load the multicore example, the CM7 core hangs during startup, while the debugger shows that the CM4 core is running. The CM7 never reaches `main()`.

The fault status registers are:

To rule out an issue with the multicore example, I also tried running the standalone CM7 Hello World example, but it exhibits the same behavior. However, the standalone CM4 Hello World example runs correctly.

The board is an RT1170 EVKB with the default jumper and DIP switch settings, and I have not modified any hardware configuration.

Has anyone encountered this issue with SDK 26.03.00 or the RT1170 EVKB? Is there any additional board configuration, boot setting, or debugger configuration required for the CM7 core?

I also tested the previous SDK version (v2.13.0), but I observed the same issue with the CM7 core.

Any suggestions would be greatly appreciated.

Thank you!

Re: RT1170 EVKB Dual-Core Example: CM7 Hangs at Startup

Pablo_Ramos — Thu, 02 Jul 2026 20:07:57 GMT

Hi @FranklinOmo,

Could you please share the schematic revision of your board? Additionally, to help simplify the review, could you send us a photo of the board?

Best Regards,
Pablo

Re: RT1170 EVKB Dual-Core Example: CM7 Hangs at Startup

FranklinOmo — Fri, 03 Jul 2026 14:55:00 GMT

Hi @Pablo_Ramos
Here is an image of the board for your reference..

Re: RT1170 EVKB Dual-Core Example: CM7 Hangs at Startup

Pablo_Ramos — Fri, 03 Jul 2026 20:59:17 GMT

Hi @FranklinOmo,

Thanks for the picture of the board.

Could you help me perform a mass erase of the board?

You can find the steps for performing a mass erase using the SPT in the following document:

RT board recovery for debugger connect issues

Could you also help me test by updating the firmware?

Instructions for updating the firmware can be found in Section 2.11, "On-board Debugger," of the MIMXRT1170-EVKB Board Hardware User Guide.

Have you been able to successfully program and run a CM7 application before, or has this behavior been present since the board was first taken out of the box?

If the problem persists, could you also try programming the device using the GUI Flash Tool or SPT?

Best Regards,

Pablo