eMMC on STM32H743 always Disk Error

[Charlie CHEN]

Hi,

Like old topic says : https://community.st.com/s/question/0D50X0000BbNEpXSQW/fatfs-emmc-always-frdiskerror?t=1573783271738

I`m trying to build project for STM32H743 with STM32CubeMX, and use eMMC for my storage space.

eMMC : Micron 4GB

Manager File : FATFS

This is the (Left)CSD Register it retured & (Right)the Micron datasheet

And I have no ideal about

MaxRdCurrentVddMin,

MaxRdCurrentVddMax,

MaxWrCurrentVddMin,

MaxWrCurrentVddMax, are all zero,but the true value is not.

Can anyone help?

I`ll really appreciate.

[schumilop]

Hi, were you able to solve this? I am getting the same error when I try to use an SD card with STM32H7

[Haithem Rahmani]

Hi @Charlie CHEN​

Could you try to use the Polling API instead of the DMA one to discard any potential issue related to cachee maintenance?

regards

haithem.

[Haithem Rahmani]

Hi @schumilop​ 

Getting the same error doesn't mean the same root cause.

since you are using the SD card, you may check one of the reference apps provided within the CubeFW package.

for example this one:

https://github.com/STMicroelectronics/STM32CubeH7/tree/master/Projects/STM32H743I-EVAL/Applications/FatFs/FatFs_uSD_DMA_Standalone