In case of interest in NAND Flash operation (the SD cards contain NAND Flash and
a controller performing block management and level wear, which is invisible to
the SD card driver layer) the following is a guide to an implementation: http://www.utasker.com/docs/uTasker/uTasker_NAND.pdf
It hasn't been used with the LPC devices since I don't think that any
have NAND Flash controller (?) but it has been used with an ATMEL ARM7 with NAND
Flash interface.
--- In l..., "Mark" wrote: >
> Hi
>
> Take at look at http://www.utasker.com/docs/uTasker/uTasker_utFAT.PDF
> This explains the operation and how FAT32 works and documents the utFAT
user's interface.
>
> The uTasker project includes SD card FAT32 for SPI or MCI on the LPC2xxx and
LPC17xx parts and will also allow SD cards to be simulated - allowing low level
SD card operation and FAT operation to be studied, tested and debugged where
necessary.
>
> Regards
>
> Mark
>
> http://www.uTasker.com
> --- In l..., "cynergized" wrote:
> >
> > Hi Sachin,
> > Did you find any useful app notes or examples? I am on the exact same
migration path as you (was using SPI on lpc2148, and switching to SD bus on
lpc2378).
> >
> > Cynergizer
> >
> > --- In l..., sachin kumar wrote:
> > >
> > > Hi:
> > >
> > > I am going to interface 2GB SD/MMC card with LPC2378 Processor on
Olimex
> > > LPC2378STK Board (http://www.olimex.com/dev/lpc-2378stk.html).
> > >
> > > I am new to SD/MMC card, earlier i have interfaced SD/MMC card in SPI
mode
> > > with LPC2148 processor, with the help of AN10406_3 application note
from
> > > NXP. This note describe interfacing in SPI mode
> > >
> > > Please give me link to any document which describe interfacing in
SD/MMC
> > > mode.
> > >
> > > Regards
> > > Sachin
> > >
>
The uTasker project includes SD card FAT32 for SPI or MCI on the LPC2xxx and
LPC17xx parts and will also allow SD cards to be simulated - allowing low level
SD card operation and FAT operation to be studied, tested and debugged where
necessary.
Regards
Mark
http://www.uTasker.com
--- In l..., "cynergized" wrote: >
> Hi Sachin,
> Did you find any useful app notes or examples? I am on the exact same
migration path as you (was using SPI on lpc2148, and switching to SD bus on
lpc2378).
>
> Cynergizer
>
> --- In l..., sachin kumar wrote:
> >
> > Hi:
> >
> > I am going to interface 2GB SD/MMC card with LPC2378 Processor on
Olimex
> > LPC2378STK Board (http://www.olimex.com/dev/lpc-2378stk.html).
> >
> > I am new to SD/MMC card, earlier i have interfaced SD/MMC card in SPI
mode
> > with LPC2148 processor, with the help of AN10406_3 application note from
> > NXP. This note describe interfacing in SPI mode
> >
> > Please give me link to any document which describe interfacing in SD/MMC
> > mode.
> >
> > Regards
> > Sachin
>
Reply by Mark●July 6, 20112011-07-06
This blog post has a working example for the Olimex board's SD/MMC. Links
to other sources of info are included too.
--- In l..., "cynergized" wrote: >
> Hi Sachin,
> Did you find any useful app notes or examples? I am on the exact same
migration path as you (was using SPI on lpc2148, and switching to SD bus on
lpc2378).
>
> Cynergizer
> You could start with the specifications: http://www.sdcard.org/developers/tech/sdcard/
There is an interface document after you agree to some terms and conditions.
Not the least of which is that you may be required to pay for a license to use
anything derived from the simplified specifications.
MOST of the SD specification is proprietary and unless you join the SD group
($$$) you aren't going to get them
And all of this is why I prefer the compact flash devices. I realize they are
too large (physically) and probably require too many pins for many applications
but I really don't like 'closed' hardware.
Richard
Reply by cynergized●July 5, 20112011-07-05
Hi Sachin,
Did you find any useful app notes or examples? I am on the exact same migration
path as you (was using SPI on lpc2148, and switching to SD bus on lpc2378).
Cynergizer
--- In l..., sachin kumar wrote: >
> Hi:
>
> I am going to interface 2GB SD/MMC card with LPC2378 Processor on Olimex
> LPC2378STK Board (http://www.olimex.com/dev/lpc-2378stk.html).
>
> I am new to SD/MMC card, earlier i have interfaced SD/MMC card in SPI mode
> with LPC2148 processor, with the help of AN10406_3 application note from
> NXP. This note describe interfacing in SPI mode
>
> Please give me link to any document which describe interfacing in SD/MMC
> mode.
>
> Regards
> Sachin
>
I am new to SD/MMC card, earlier i have interfaced SD/MMC card in SPI mode
with LPC2148 processor, with the help of AN10406_3 application note from
NXP. This note describe interfacing in SPI mode
Please give me link to any document which describe interfacing in SD/MMC
mode.