CSL SD Card Example doesn't work

Moritz Fricke

Hi,

again I am facing problems to run the SD Card Examples on my ezDSP5505 (REV.C). The examples are build without problems, but the detection of the SD Card (2GB Kingston) always fails. I have already changed the csl_general.h and the set MMCSD Channel to CSL_MMCSD1_INST which I have the SD Slot connected to.

MMCSD-ATAFS TESTS!

MMCSD-ATAFS POLL MODE TEST!

No Card detected
Please Insert SD Card
SD card initialization Failed

MMCSD-ATAFS POLL MODE TEST FAILED!!

MMCSD-ATAFS DMA MODE TEST!

No Card detected
Please Insert SD Card
SD card initialization Failed

MMCSD-ATAFS DMA MODE TEST FAILED!!

MMCSD-ATAFS TESTS FAILED!!

I have checked the signals CLK,CMD,DAT0-DAT3 and VCC without having the SD Card inserted and I am sure that it can't be a problem of the connection.

I'm using CSL Release 2.10.00.00 and CCS 4.0.0.16. Can anyboby help me with that?

Thanks in advance,

Moritz

over 14 years ago

0 Hyun Kim over 14 years ago

TI__Genius 14965 points

hi,

What cpu frequency are you running your code?

Regards,

Hyun

0 Moritz Fricke over 14 years ago in reply to Hyun Kim

Prodigy 55 points

Hi Hyun,

thank you for your quick response. I am running the code at 100MHz. I've tried so slow down the SD Clock rate in the meantime and in fact the SD Card is detected, but now the Code is hanging after SD Card detection.Could you give me an exact schematic how to connect the SD Slot to MMCSD Port? Maybe there's another electrical problem I haven't figured out yet. Can I used the Schematics from C5505 EVM Technical Reference? Can I therefore connect VDD_IO1 to Vcc (=3.3V).

Thanks in Advance,

Moritz

0 Hyun Kim over 14 years ago in reply to Moritz Fricke

TI__Genius 14965 points

Hi,

Sure IO1 can use 3.3V. C5505 EVM uses 3.3V IO1. Also you can refer ezdsp schematic but ezdsp uses different SD port from EVM.

Regards,

Hyun

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CSL SD Card Example doesn't work