Error mounting SD Card in 4-bit mode in stm32f756zg

dharanik_1399 · ‎2025-02-08

Hi,

I am encountering an issue with mounting the SD card in 4-bit mode on my STM32F756ZG microcontroller. Despite using the BSP driver (bsp_driver_sd), the SD card fails to initialize and mount correctly, resulting in an initialization error and the FR_NOT_READY_ERROR status.

Thanks&Regards

SofLit · ‎2025-02-08

Hello,

See this thread

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.
PS:
1 - This is NOT an online support (https://ols.st.com) but a collaborative space.
2 - Please be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help.

bramble · ‎2025-02-08

Hi @dharanik_1399 , I ran into the same problem very recently (on STM32H755). There could be several reasons for the problem you report but I suggest that you check this: https://community.st.com/t5/stm32-mcus-embedded-software/sdcard-with-sdmmc-on-stm32h755zi-nucleo/td-p/770582 .