SDIO + FatFS, is this possible?

[kkim.4]

I made it up with vet6 mcu which have tx rx dma function while struggling with f103rct6 not having those functions ...​

Would appreciate any help...​

[Javier1]

We need waaaay more info if you want our help.

Be more specific, tx rx dma function? for SDIO+DMA?

Did you tried something already? what happened?

Is it a custom board? show us some pictures or altium/eagle snaps

[Mike_ST]

Hello,

In the following F1 software package available here:

https://www.st.com/en/embedded-software/stm32cubef1.html#get-software

Hou have the following project:

STM32Cube_FW_F1_V1.8.4\Projects\STM3210E_EVAL\Applications\FatFs\FatFs_uSD

Please have a look if it helps.

[Tesla DeLorean]

I'm not entirely sure the STM32F103RCT6 needs DMA for SDIO functionality.

It's been a few years, but unless you're committing the DMA resources elsewhere they should be available for the SDIO peripheral. The SDIO is definitely going to be sensitive to you wandering off mid data transfer.

[AScha.3]

the STM32F103 has not SDIO module in most versions. so ??

[Tesla DeLorean]

Well the product page seems to infer that it does, but like I said been years, and ST has some much better solutions these days.

https://www.st.com/en/microcontrollers-microprocessors/stm32f103rc.html#overview

And definitely members of the F103 family that do, others that don't have enough pins. All could likely support SD Cards via SPI

[AScha.3]

ah, ok...high density line >= 256K flash should have it. (never look at this, because F103 is "the old standard" (blue pill) cpu ... F103 medium density - no SDIO. so - is same die , or not ?

but not here: