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Can't read Card Specific Data from SD Card (rtems-4.9.0)



Thomas Doerfler wrote:
> Can you monitor the SPI signals at the SDCard with an oscilloscope, I
> think the proper relationship between SEL, CLK and Data lines is crucial.
>   
 Yes, of course they are - that's why I love my four channel 'scope!
> - - Did you verify the baudrate is correct (not too high)?
>   
Yes.  I had started with 6.25 MHz, but switched now to 391 kHz because 
of the MMC startup requirement - same results.  (While I'm at it, I will 
only be using SD cards, so can I run only at the higher 6.25 MHz clock?