Hello Everyone, I am trying to run SDIO 1 bit mode with FATFS on a custom board but facing some issues.1) CUBEMX Version -> 6.1.22) API_VERSION -> STM32Cube_FW_L4_V1.16.0 3) IDE STM32CubeIDE4) Schematic of SD card connection is attachedI need to run SDIO 1 bit mode as I don’t have IOs leftThese are the tutorials and videos I followed but I am not able to get them to work. https://community.st.com/s/question/0D50X00009XkWt5SAF/solution-to-fix-stm32f4xxx-stmcubemx-firmware-v118-sdio-fatfs-dma-not-working-issuehttps://www.youtube.com/watch?v=I9KDN1o6924The following attached document contains the steps I followed. But it seems I am not able to get it working :\No matter what I do, I always get this response -> f_open() always return (FR_NOT_READY)Can someone please help me out here and provide some guidance? :(

Associate

Question

SDIO 1 bit mode + FATFS not working with STM32L433RCT6

Hello Everyone, I am trying to run SDIO 1 bit mode with FATFS on a custom board but facing some issues.

1) CUBEMX Version -> 6.1.2

2) API_VERSION -> STM32Cube_FW_L4_V1.16.0

3) IDE STM32CubeIDE

4) Schematic of SD card connection is attached

I need to run SDIO 1 bit mode as I don’t have IOs left

These are the tutorials and videos I followed but I am not able to get them to work.

The following attached document contains the steps I followed. But it seems I am not able to get it working :\

No matter what I do, I always get this response -> f_open() always return (FR_NOT_READY)

Can someone please help me out here and provide some guidance? :(

Visitor II

Hello,
in the SD card diagram, pins 3 and 7 are reversed.