MCXC444, SDMMC, and FatFS

aaronm — Thu, 16 Jan 2025 23:03:30 GMT

I have the SDK for the MCXC444 - 24.12.00 - and I see that it includes SDMMC stack support, but there's no FatFS support included. Does that mean that the 444 does NOT support FatFS, even though SDMMC is inherently included? Or are we expected to download the FatFS driver from Chan's site for each project that needs it?

Thanks,

Aaron

Re: MCXC444, SDMMC, and FatFS

Celeste_Liu — Fri, 17 Jan 2025 10:29:37 GMT

Hello @aaronm ,

Thanks for your post.

Although there is an sdmmc library in the middleware of the SDK, the MCXC444 does not support SDIO. As a result, there is neither an SD card example nor FatFS under the SDK.
If you need to use an SD card on the MCXC444, you can only implement it through the SPI interface.

I recommend you to read the following documents in order to implement FatFs using SPI.

Porting FatFs file system to KL26 SPI SD card code - NXP Community

AN10406 Accessing SD/MMC card using SPI on LPC2000

Hope it can help you.

BRs,

Celeste

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MCX Microcontrollers中的主题 MCXC444, SDMMC, and FatFS

MCXC444, SDMMC, and FatFS

Re: MCXC444, SDMMC, and FatFS