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Olimexino-STM32 SD-Card access using SPI and DMA

Question asked by menecken on Dec 2, 2013
Latest reply on Nov 4, 2014 by tv.sarath
Hey Folks,

after several hours of trying I stil wasn't able to find out, why it doesn't work. Google and Forum search didn't help either.

Problem: SdCard access doesnt work with the built in SD-Card-Mount using SPI via DMA.

But SD-Card access  works in ALL following configurations:
- SPI, DMA and an external SD-breakoutboard (=> DMA is allright)
- SPI and an external SD-breakoutboard
- SPI with the built in SD-Card-Mount (=> wiring is allright, SPI is allright)

Plus: When I disconnect the SD-Card and connect MISO to MOSI, a sent Byte is received just fine. With a SD-Card connected always 0xFF is returned.

Did anybody encounter the same problem? Or might know what to do?

Thanks a lot in advance,
Best regards



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