topic Re: Writing QSPI Flash on FRDM-MXCN947 board. in MCX Microcontrollers

Writing QSPI Flash on FRDM-MXCN947 board.

takagi_y — Mon, 24 Feb 2025 09:04:23 GMT

I am using the FRDM-MXCN947 board and am trying to write to QSPI Flash from the download during debugging in MCUXpresso IDE, but the following error occurs.

The flash driver uses MCXN9xx_SFDP_FlexSPI.cfx.

Do I need to modify the driver?

Thank you.

Re: Writing QSPI Flash on FRDM-MXCN947 board.

Harry_Zhang — Tue, 25 Feb 2025 03:32:41 GMT

Hi @takagi_y

If you want to run code from external memory,

You can refer to this article

Running code from external memory with MCX N94x - NXP Community

Harry

Re: Writing QSPI Flash on FRDM-MXCN947 board.

takagi_y — Tue, 25 Feb 2025 04:17:12 GMT

Thank you for your reply.

I have checked the article you introduced.

In this case, you need to start the board in ISP mode.

Is it possible to write to the QSPI Flash by downloading (debug) from the MCUXpresso IDE like the RT1060?

If there is a way to write from the IDE, please let me know.

Best regards

Re: Writing QSPI Flash on FRDM-MXCN947 board.

Harry_Zhang — Tue, 25 Feb 2025 10:28:46 GMT

Hi @takagi_y

"Is it possible to write to the QSPI Flash by downloading (debug) from the MCUXpresso IDE like the RT1060?"

Yes, but you need to change the CMPA to boot from external flash.

So first you need to refer to this article to change CMPA.

And then write to the QSPI Flash by downloading (debug).

Harry

Re: Writing QSPI Flash on FRDM-MXCN947 board.

Harry_Zhang — Tue, 25 Feb 2025 10:34:50 GMT

Hi @takagi_y

You can also refer to hello_world_qspi_xip example.

Harry

Re: Writing QSPI Flash on FRDM-MXCN947 board.

takagi_y — Wed, 05 Mar 2025 05:23:51 GMT

Thank you for your reply.

It is now possible to write to Flash from the IDE using XIP with FRDM-MXCN947.

Best regards