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I am trying to interface Sandisk SDHC micro sd card of 8GB size with MSP430FR5969. I am able to initialize the SD card correctly in SPI mode. But When I try to read CSD with CMD9 it responds with 0xFF time out error. It is not responding with 0x00 (R1 response in SPI mode). Please help.

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  • \$\begingroup\$ Consider marking an answer accepted if it helped you. \$\endgroup\$ – pipe May 19 '18 at 7:58
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I have resolved it. We have to send 2 bytes of dummy characters before the CMD9 command. I sent only 1. Problem resolved

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