How to "connect" FATFS with SDMMC1 in STM32Cube for STMH7

Mick P. F. · ‎2022-01-02

Hallo,

I can't find any info about this theme!

Can someone please help me with some hints on how to "connect" FATFS as filesystem driver with the SDMMC1 interface (in 4 bits mode) as hardware.

Many Thanks in advance,

Michael

SofLit · ‎2022-01-03

In that case you can refer to the example provided in STM32CubeH7 under the path Projects\STM32H743I-EVAL\Applications\FatFs\FatFs_uSD_Standalone

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SofLit · ‎2022-01-03

Hello @Mick P. F. ,

Please refer to this video (from t= 2:03) on YouTube done for F7, normally it would be the same steps: link.

Hope this will help you.

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Mick P. F. · ‎2022-01-03

Hello SofLit,

I have found some projects and examples on this topic, but they all relate to the STM32F MCUs.

There are two problem with this: When I activate FATFS in STM32CubeMX, I can only select the "User defined" mode but not "SD Card". In addition, SDMMC1 of the H7 is not DMA capable inside STM32CubeMX (in contrast to STM32F).

I have now decided to access the SD card via SPI because it is easier and I only want to read a little couple of data.

Thanks for your help.

SofLit · ‎2022-01-03

In that case you can refer to the example provided in STM32CubeH7 under the path Projects\STM32H743I-EVAL\Applications\FatFs\FatFs_uSD_Standalone

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.