topic Re: RT1060 uses rom api to implement file system in i.MX RT Crossover MCUs

RT1060 uses rom api to implement file system

2548903578 — Fri, 27 May 2022 01:02:50 GMT

Hello

Because we don't use sd card on our board, so the file system can only be ported on nor flash. There is rom api in the official sdk package, so I ported the file system based on this. However, during testing, it was found that sometimes it could be mounted, and sometimes it could not be mounted. When I use to create directories and files, there is a high probability of failure or even board reset.

Hardware Details
Device :MIMXRT1061

Nor Flash:W25Q128JVSQ
SDK Details

SDK Name:SDK_2.x_MIMXRT1061xxxxA
SDK Version :2.11.1 (563 2022-03-24)
Host OS :Windows
Toolchain :MCUXpresso IDE(11.5.0_7232)
Middleware :FatFS, FreeRTOS

Drivers:fsl_romapi.c,fsl_romapi.h
Reference Demo

SDK_2.11.1_EVK-MIMXRT1060\evkmimxrt1060_fsl_romapi

Reference Post

https://community.nxp.com/t5/i-MX-Processors/FatFs-with-nor-flash-memory-MIMXRT1062/m-p/975244

Phenomenon

The device resets after entering the create directory command.

Re: RT1060 uses rom api to implement file system

jeremyzhou — Fri, 27 May 2022 03:28:10 GMT

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
I'd like to know the ratio of the issues happening, further, whether you can introduce the steps of porting code and upload the whole demo code.
Have a great day,
TIC

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Re: RT1060 uses rom api to implement file system

2548903578 — Fri, 27 May 2022 05:21:42 GMT

Hi,

Temporarily unable to upload the entire project, here I upload the interface files of fatfs and rom api first. I think there may be something wrong with the configuration of these two files. Looking forward to your reply!

Re: RT1060 uses rom api to implement file system

2548903578 — Fri, 27 May 2022 07:09:13 GMT

Hi,

I modified the romapi demo based on the development board to create a fatfs project on nor flash. The phenomenon is exactly the same as when I first started. Hope you can give me some advice! thank you very much!

Re: RT1060 uses rom api to implement file system

jeremyzhou — Mon, 30 May 2022 09:27:58 GMT

Hi,
Thanks for your reply.
Firstly, according to your reply, it will encounter the issue after the task scheduler begins to work, is it right?
Second, I was wondering if you can list the steps of porting code,
Lastly, I guess the issue may be related to a lack of taking critical section protection prior to calling ROM APIs, I‘d like to suggest you use the pair of taskENTER_CRITICAL() and taskEXIT_CRITICAL() to do it.
Have a great day,
TIC

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Re: RT1060 uses rom api to implement file system

2548903578 — Wed, 01 Jun 2022 06:28:50 GMT

Hi,

After several days of testing, it was found that the program was running in the flash and used the file system to operate the flash. This will cause the program to hang. Now you can run the program in the external sram. But another problem is that I am using the mcupresso Secure Provisioning tool to program the program, which will cause me to adjust the mode of the board every time. It is not possible to download directly using the ide. And it is also very inconvenient for debugging. I would like to ask if the program can run directly in the external SRAM? It doesn't matter if the power is lost. This makes debugging easier.

Re: RT1060 uses rom api to implement file system

jeremyzhou — Wed, 01 Jun 2022 07:38:23 GMT

Hi,
Thanks for your reply.
To provide the fastest possible support, I'd highly recommend you refer to the post to learn how to debug in the SDRAM.
Have a great day,
TIC

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Re: RT1060 uses rom api to implement file system

2548903578 — Wed, 01 Jun 2022 08:18:51 GMT

Hi，

Thank you very much for your reply, this article was very useful to me. But the article mentioned that the script RT1050_SDRAM_Init.scp is for the rt1050 chip. Does rt1060 also work? If not, where should I get this script RT1060_SDRAM_Init.scp. Looking forward to your reply!

Re: RT1060 uses rom api to implement file system

jeremyzhou — Thu, 02 Jun 2022 01:44:26 GMT

Hi,
Thanks for your reply.
1) Does rt1060 also work?
-- Yes.
Have a great day,
TIC

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