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SD card, CMD0 response

 
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ch_dupre



Joined: 22 Aug 2006
Posts: 18

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SD card, CMD0 response
PostPosted: Tue Aug 22, 2006 7:21 am     Reply with quote
Hello,

I'm trying to write and read data on SD cards. When I initialise the card by sending CMD0, I've noticed that I get different responses: 0x0, or 0x1F, 0xBF. Have anybody experienced the same thing?

Thanks,

Christophe D.
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Wed Aug 23, 2006 1:48 am     Reply with quote
My first thought is that you have a hardware problem. A response of 0xBF is illegal, the MSB of a R1 format response is defined to be always 0.

Have you ever managed to get other cards to work, ie. is this a new hardware setup?
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