SD FATFS codes generated from CubeMX doesn't work?

[Darren Chew]

Posted on January 16, 2018 at 05:39

I'd followed the link workaround and it still doesn't work

https://community.st.com/docs/DOC-1751-wa-proposal-when-using-fatfs-r012c-with-stm32cubemx

 

So I'm just curious did I setup the CubeMX correctly. Appreciate that someone help to look at my project file and comment.

[Tobias Wedell]

Posted on January 16, 2018 at 20:21

Hi,

I think you have to add two DMA channels for SDMMC1_RX and SDMMC1_TX. I have correctedyour file. Look at the DMA section for SDMMC1.

If this doesn't help try this suggestions:

https://community.st.com/0D50X00009XkWt5SAF

It is for the STM32F4 but maybe it also works for you.

Have you tried to access your SD card with WriteBlocksand ReadBlocks commands ?

Best regards

________________ Attachments : STM32L496VG_SD.ioc.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hy6C&d=%2Fa%2F0X0000000b4F%2FttY81hxKYe69SuS87T7GxobK3jlN_A1b8.Qh7VQtbTk&asPdf=false

[Darren Chew]

Posted on January 17, 2018 at 03:55

Tks Tobias, this resolve the issue.

Regards

[Tobias Wedell]

Posted on January 17, 2018 at 08:02

What resolves the issue? Only the changes for DMA in CubeMX or you have to do some changes at your source code?

Maybe helpful for others.

[Darren Chew]

Posted on January 17, 2018 at 09:24

Changes to the DMA (RX & TX) and following the link (code changes) that you initially sent.

The STM example requires queues, but this link doesn't require.

Hope this help.