MCX MicrocontrollersのトピックRe: MCXN947 having Ee(42) error

MCXN947 having Ee(42) error

nxpsachve — Fri, 18 Jul 2025 01:12:50 GMT

Hi,

I'm having troubles with FRDM-MCXN947 development board. The board is unable to connect to chip's debug port making it difficult to erase or flash new FW.

I was able to use the board for some time and ran couple of examples without issues but recently it starting giving issues while trying to debug.

I tried to follow some earlier post about the same issue on FRDM-MCXN947 but it didn't help to fix it.

If anyone can provide me with some inputs on how to fix this issue then it will be helpful.

Regards,

Sach

Re: MCXN947 having Ee(42) error

Alice_Yang — Fri, 18 Jul 2025 09:55:35 GMT

Hi @nxpsachve

Regarding your question, I recommend that you first perform a full erase using the SEC tool. Next, create a new workspace in MCUXpresso IDE and import an SDK demo project, such as the Hello World example. Then debug.

Download SEC tool from:

https://www.nxp.com/design/design-center/software/development-software/mcuxpresso-software-and-tools-/mcuxpresso-secure-provisioning-tool:MCUXPRESSO-SECURE-PROVISIONING

After install, connect board MCU-LINK port, then erase as below：

Alice

Re: MCXN947 having Ee(42) error

nxpsachve — Fri, 18 Jul 2025 10:12:09 GMT

Hi Alice,

Thanks for your response.
I tried your suggestion but unfortunately it didn't work.
I saw an error message while doing it.

Regards,

Sach

Re: MCXN947 having Ee(42) error

Alice_Yang — Mon, 21 Jul 2025 09:21:44 GMT

Hello @nxpsachve

Thanks for your reply.

Do you have security - related settings configured on your board?
Please refer to my video to set your board to the default settings.

If still have any issue, please feel free to contact me.

Thank you.

Alice

Re: MCXN947 having Ee(42) error

nxpsachve — Wed, 23 Jul 2025 06:27:41 GMT

Hello Alice,

I'm still facing connectivity issue while using secure provisioning tool as shown below.

Regards,

Sach

Re: MCXN947 having Ee(42) error

nxpsachve — Wed, 23 Jul 2025 07:14:03 GMT

Hi Alice,

I tried again after setting my board to ISP mode and was able to follow your video.

But when tried to Erase it end up with issue.

Regards,

Sach

Re: MCXN947 having Ee(42) error

Alice_Yang — Wed, 23 Jul 2025 09:20:08 GMT

Hello @nxpsachve

- Please take a photo of the chip on your board. I want to see the mask.

- Please also record a video of the steps you take, following the video in my attachment.

Thank you.

Alice

Re: MCXN947 having Ee(42) error

nxpsachve — Wed, 23 Jul 2025 11:15:29 GMT

Hi Alice,

Here are the details.

Actually, now I' unable to get any dbg port on the provision tool as shown in video"

Regards,

Sach

Re: MCXN947 having Ee(42) error

Alice_Yang — Thu, 24 Jul 2025 09:05:14 GMT

Hello @nxpsachve

Thanks for your reply.

While I did not see your steps in your video. Even though there are no steps about connecting the board in ISP mode, only a SEC tool view is shown.

Alice