SD communication protocol

Antti Lukats antti.lukats at googlemail.com
Wed May 19 10:47:59 EDT 2010


well did use also an existing base :)
from my junk-stack

the no-ip.biz its not SDIO he just named it wrong its SD core
and not verified...


Antti

On Wed, May 19, 2010 at 5:43 PM, Carlos Camargo <cicamargoba at gmail.com> wrote:
> Hi
>
>>
>> well, linux should have sdio uart built in :)
>
> My students are trying to implement a basic SDIO layer, but, they are using
> an existing project [1].
> I don't know if this code works (Is my students work :) )
>
>>
>> so the goal is to have no extra drivers needed, but
>> there would be later need to test the special things as well
>> we did buy one ben just for the SDIO testing, but so far we
>> have only done as much as connecting it 16804A and checking
>> out that that ben (factory image) does send 0x05 command
>> that is it does try to init SDIO :)
>>
>> what made us very happy.. that is the default image maybe
>> already useable (to some extent) for SDIO use (at least testing)
>
> If you need some help with this project don't  hesitate  to ask us, I think
> that you are working on a lot of projects :)
>
> Best Regards
>
> Carlos
>
>
>>
>> Antti
>>
>>
>
>
>
>  [1] http://bknpk.no-ip.biz/my_web/SDIO/
>
> Carlos
>
>>
>> On Wed, May 19, 2010 at 5:24 PM, Carlos Camargo <cicamargoba at gmail.com>
>> wrote:
>> > 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!!!
>> >> >
>> >> > _______________________________________________
>> >> > Qi Developer Mailing List
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>> >>
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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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>
>
>
> --
> Carlos Iván Camargo Bareño
> Profesor Asistente
> Departamento de Ingeniería Eléctrica y Electrónica
> Universidad Nacional de Colombia
> cicamargoba at unal.edu.co
>
> _______________________________________________
> Qi Developer Mailing List
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