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Using MMC/SD Controller in L138

McFly
Prodigy 80 points
Other Parts Discussed in Thread: CSD

Hello, Everybody!

Recently I tried to get the content of SD card's CSD register but I failed. According to the SD Specification, I added one sendCmd statement 

sendCmd(MMCSD0, MMCSD_CMD_SEND_CSD, rca<<16, 1);
in the test_mmcsd.c (I'm using the test_mmcsd.prj in LogicPD's evmomapl138 BSL) after SD card's Initializition and Identification to send CMD9 . And the RESPONSE I got is 0x0 which isn't right obviously. I just wonder what's problem could be.

I hope somebody here can help me. Thank you all!

McFly