Yahoo Groups archive

Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: SD Card inferface

2004-07-22 by Jan Szymanski

--- In lpc2000@yahoogroups.com, "Lasse Madsen" <lm@e...> wrote:
> Hi Marcio,
> 
> The code is written for a SPI uart (MISO,MOSI,SCK) in the AVR 
processor
> so I would guess SPI if what you refer as SD mode is the special
> "parallel transfer" mentioned in the SD CARD manual from Sandisk.
> 
> Best regards
> l. madsen
> 
> -----Original Message-----
> From: atmelbr [mailto:atmelbr@y...] 
> Sent: 22. juli 2004 22:04
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Re: SD Card inferface
> 
> Lasse,
>   The code is SPI mode,SD card mode or both ?
> Regards,
>        Marcio Montenegro
> 
> > --- In lpc2000@yahoogroups.com, "Lasse Madsen" <lm@e...> wrote:
> > > Yes its VERY easy to port you only have to alter it one place 
and 
> it's
> > > all written in ANSI C so it requires a minimal effort. 
> > > 
> > > I have purchased it my self and ported it to some different 
> processors
> > > with much success !
> > > 
> > > Best regards
> > > Lasse Madsen
> > >
> 
> 
> 
> 
>  
> Yahoo! Groups Links

It looks like only SPI/MMC mode specifications for SD cards are 
freely available .
I tried many times to contact people behind sdcards.org with a 
questions about specifications and if it is legal to use SD cards, 
but had no luck.
Can anyone come across any specifications for file system (FAT16) on 
SD cards ?
Does anyone know if it is legal to use SD card in embedded systems 
without a licence (as it is still unclear to me) ?

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.