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Altera_Forum's avatar
Altera_Forum
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16 years ago

SD Card not working on DE1 board

Hi,

I try to run the "DE1_SD_Card_Audio" demo from the supplied CD, using 2 different SD cards:

- an old 16 Mb (!!!) SanDisk SD card

- a brand new 4Gb SanDisk HSSD card

I formatted both under DOS prompt with:

FORMAT F: /FS:FAT (ie. FAT16)

I then copied straight away the 3 .wav files from the directory "E1_demonstrations\music" from the CD, which are uncompressed, stereo 16-bit PCM audio sampled at 48kHz into the SD's root directory.

But when I launch the demo, I get no sound, just a small glitch when I switch SW0 on/off.

I tried two completely different projects (both .qpf are designed specifically for the DE1 board), making sure the nCEO is declared in the settings as a regular I/O pin (see this (http://www.alteraforum.com/forum/showthread.php?t=547) thread), which are using the SD card for storage (FAT16), but I cannot get them to read the SD card either.

Anyone has this demo working on a DE1 board or can tell me what am I doing wrong?

Regards,

Michel

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    IIRC, the original version of the SD audio demo doesn't work. There is a fixed version at the Terasic web site.

    If it still doesn't work, try testing both features, SD and audio, separately.
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Thank you, I will give it a try!

    I thought that by taking the latest CD on Terasic site, I would get it altogether, but this isn't the case.

    I can tell that audio is working though, as the synthesizer demo does output sound.

    Michel
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Still doesn't work.

    However, it looks like a compatibility issue with both of my SD Cards: tracing down at the signal level, everything is working electronically, but I don't get the expected answer to the SEND_OP_CMD reset command (0x01 == "In idle state" or 0x05 == "In idle state + Invalid command" instead of 0x00).

    I will post my progress in this thread.

    Michel
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    I am a newbee to FPGA world. where is this demo ?

    I am trying to run SD card music play lab as on page 6-5 of Cyclone II starter Development Kit User Guide, but can't find the elf or c files of the project (to compile or run) when I start nios2-ide and switch to the workspace CII_Starter_SD_Card_Audio as directed on page 6-7.

    I have already downloaded the sof into it.

    All the files were installed from the accompanying CD.

    Please help.

    Thanks
  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    Were you able to solve the issue? I'm working with a Kingston 4GB card and it's not showing as detected.