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Read from SD card failed : EK-TM4C1294XL

Norbert Toth
Expert 1145 points
Other Parts Discussed in Thread: EK-TM4C1294XL

Hi,

I have a little project, where I use the EK-TM4C1294XL launchpad.

* I made an expansion board to it with additional SD card slot. (The board uses the SSI module 3)

* I made the file system on the SD card and formatted it.

* I copied an example file into that.

In my project I use the TivaWare driver librabry that includes a third_party FatFS support. My problem / issue is, when I try to read from the file on the SD card after mounting the filesystem, I got an error code, that the SD card isn't ready.

Additionally, I had successfull read several weeks ago, but I cannot reproduce it those code. I'm guessing, the FatFS driver destroy something in the filesystem on the SD card, but my PC can read it.

Can anybody help me, what did I wrong?

Regards,

Norbert

  • 0
    Guru 27285 points
    Hi, infer something from your writing is impossible...
    Only you are using a Launchpad 1294Xl and SSI3 + fatfs Is not enough, all these are well known as fully working, so at your side maybe something is wrong.
    but AS USUAL:
    Never read post "how to post to have help"
    NO hardware description
    No schematics,
    No diagram or measurement
    No real description of how "issue" can be reproduced
    No method..
    So how can we help someone seems have no idea of what is doing?
  • 0
    TI__Guru**** 244400 points
    Hello Norbert,

    Please check the following thread...

    http://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/t/391745

    Regards
    Amit