AVR-Chat

For non-commercial use ?

--- In AVR-Chat@yahoogroups.com, "Roy" <roy.h@...> wrote:
>
> Are you willing to share your code for the SD card?
> 
>  
> 
> _______________________________________
> 
> Roy Hopkins             ZL2RJH
> Tauranga
> New Zealand
> _______________________________________
> 
> -----Original Message-----
> From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
Behalf
> Of kernels_nz
> Sent: Monday, 30 April 2007 8:09 a.m.
> To: AVR-Chat@yahoogroups.com
> Subject: [AVR-Chat] I recently got back into working with SD-Cards . . .
> 
>  
> 
> Hi guys, Id like to get back to SD-cards, maybe the boys at Sabre
> technology can help ?
> 
> I spent most of my Sunday turning my "rough-as" SD card access code
> into nice functions and just generally modularizing the code.
> 
> I did run into a weird problem tho . . .
> 
> I initialize the SD-card with no problems, I then pull the CS line
> high, do some other stuff that doesnt interfere in any way with the
> SPI or SD card, pull the CS line low, try to write to the card and get
> R=0x01 (in idle state) 
> 
> Same thing happens when I try to read the card.
> 
> It reads and writes fine if I do a initialization every time before I
> read or write. . .
> 
> The datasheet says that I should only have to initialize the card once ?
> 
> Has anybody seen this before ? Any ideas or suggestions ?
> 
> Thanks in advance
> Hein B
> Auckland, New Zealand
> 
>  
> 
> 
> 
> [Non-text portions of this message have been removed]
>