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SD card and command acmd41

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smartgsm

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acmd41

Hello,

I buy SD card (32 mb) and this card will try to connect to AVR mcu.


i found format for CMDx command:
Bit Position 47 46 [45:40] [39:8] [7:1] 0
Width (bits) 1 1 6 32 7 1
Value ‘0’ ‘1’ x x x 1
start bit transmission bit command index argument CRC7 end bit

FOR command CMD0 sned to spi : 64,0,0,0,0,149

But i don't find anything about command ACMDX (ACMD41...)...

Any suggestion for this problem


br
Greg

from Slovenia
 

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