SD communication protocol

Carlos Camargo cicamargoba at gmail.com
Wed May 19 10:24:15 EDT 2010


If you want, we can test your old projects on BEN, Do you have the Linux
drivers for your SD drivers?


Carlos

On Wed, May 19, 2010 at 9:17 AM, Antti Lukats
<antti.lukats at googlemail.com>wrote:

> we are developing own SD/SDIO/MMC device side IP cores, so the gadgets
> would run at full speed
> that is at least 25mhz/4 bit mode, nothing much to see, all tests on
> FPGA development boards.
> ah, actually I have 4 different old prototypes in SD/microSD format
> but well we will be making
> new ones soon, then also pics
>
> Antti
>
> On Wed, May 19, 2010 at 5:11 PM, David Reyes Samblas Martinez
> <david at tuxbrain.com> wrote:
> > anything we can see at least as idea?
> >
> > 2010/5/19 Antti Lukats <antti.lukats at googlemail.com>:
> >> well we are doing this already
> >> plannning to release SDIO like gadgets that can be used in bens sd slot
> >>
> >> Antti
> >>
> >> On Wed, May 19, 2010 at 4:53 PM, Camilo Andres Diaz Botia
> >> <cadiazb at gmail.com> wrote:
> >>> I want to create a communication protocol to control any hardware
> >>> device using the sd port as an in/out port. I've been looking
> >>> through the code in
> >>>
> >>> /openwrt-xburst/build_dir/linux-xburst_qi_lb60/linux-2.6.32.10/driver
> >>> s/mmc/,
> >>>
> >>> and i managed to see the commands that the hots (in this
> >>> case the ben nanonote) sends to a sd card while initializing,
> >>> writing and reading it. However, the driver I've been reading is a
> >>> low level code, I need to find the driver that calls the one in the
> >>> file above and tells it the commands to be sent. So, whereabouts is
> >>> the driver I should modify in order to send the commands I desire?
> >>>
> >>> Thank you in advance.
> >>>
> >>> Camilo Diaz
> >>>
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> >
> >
> >
> > --
> > David Reyes Samblas Martinez
> > http://www.tuxbrain.com
> > Open ultraportable & embedded solutions
> > Ben NanoNote, Arduino, Openmoko
> > Hey, watch out!!! There's a linux in your pocket!!!
> >
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-- 
Carlos Iván Camargo Bareño
Profesor Asistente
Departamento de Ingeniería Eléctrica y Electrónica
Universidad Nacional de Colombia
cicamargoba at unal.edu.co
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