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MMC
Comp.Arch.Embedded is a worldwide Usenet news group that is used to discuss various aspects of Embedded Systems development.
We found 121 threads matching "mmc"
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The most relevant threads are listed first
Netsilicon - Net + 50 hardware prob
bdutta - 08:42 23-06-08
Hi All,
I am facing problem when debugging Net+50 board (developed by us).
It is showing download ok. but prog not running perfectly. It is going to
exception vector add.
But the same prog running on Demo board. In our board we are using SRAM
(128K X 16). I had made nec. modification for SRAM in ...
Re: Hello Kernel
15:24 03-06-08
On Jun 3, 2:40 pm, karthikbalaguru
wrote:
> Hi,
>
> I would like to pass commands from Shell
> and check the information exchanged
> between different routines in Kernel Space ?
> Other than printk , Is there any tool / method
> to do that ?
Look at procfs (the virtual files in ...USB host for mass storage access
Jookie - 08:48 02-06-08
Hello,
as my subject says, I'm starting to develop USB host for mass storage
access. Here are few points which describe my situation:
- I'm a hobbyist, I can't afford to buy an expensive USB stack
- my platform is BlackFin BF531 @ 400 MHz
- I don't want to use any other type of mass sto...MCore + GCC
hebnern - 06:26 05-05-08
Hello All,
I am working on a project based on the MCore MCU, and am having a rough
time getting a basic test program working correctly. The actual device that
I am working with is the O-Navi Phoenix AX which has an embedded MMC2114. I
am using a gcc 4.3.0 cross compiler under cygwin to build, and...uC Slection for a learner project
AC Me - 13:51 03-05-08
Hi all.
Yet another request for help in the selection of an appropriate uC.
I would like to construct a data logger. This data logger may be
located in areas remote from power and human kind. It will read 1-Wire
interfaced weather instruments at an interval of 2 seconds and store
the weathe...Re: about mmc device controller
budflora - 21:12 24-04-08
> On Apr 24, 4:36 am, "budflora" wrote:
> > Dear all,
> > I am studying mmc spec these days. And i'm trying to design a mmc
device
> > controller, and want to integrate with a nand flash controller which
has
> > been finished. of course, a processor is needed. i am wondering
command
> ...Re: about mmc device controller
14:12 24-04-08
On Apr 24, 4:36 am, "budflora" wrote:
> Dear all,
> I am studying mmc spec these days. And i'm trying to design a mmc device
> controller, and want to integrate with a nand flash controller which has
> been finished. of course, a processor is needed. i am wondering command
> decoding ...about mmc device controller
budflora - 07:36 24-04-08
Dear all,
I am studying mmc spec these days. And i'm trying to design a mmc device
controller, and want to integrate with a nand flash controller which has
been finished. of course, a processor is needed. i am wondering command
decoding and response handling and the implementation of MMC spec is ...SD/MMC card driver for LPC2378
Hima - 14:01 04-04-08
Hi,
I´m trying to write a block-driver for mmc/sd cards on the LPC2378, using
the 4-bit mode.
Does anybody have some experience in writing such a driver and
is there any sample code available to use as a starting point?
Regards,
Hima
...Re: Programming Microchip PIC from command line
HTwoGo@googlemail.com - 15:10 26-03-08
On Mar 11, 9:58=A0am, Nickolai Leschov wrote:
> Neil wrote:
> > Nickolai Leschov wrote:
> > > Neil wrote:
> > > > Microchip gives you a command line programmer.
> > > Can you please specify more exactly where can I find it.
> > > > BUT, not for the ICD2, just the regular programm...What NAND flash do people use?
Alan Nishioka - 17:15 24-03-08
I am currently using an MMC/SD card that I want to replace with a chip
(for simplicity, no socket, price).
Is there any popular NAND flash device that I might replace it with?
I have found:
1. SST NANDrive: IDE interface, 128MB-8GB
2. ONFI (Hynix, Intel, Micron, ie. everybody but Samsung) NAN...Re: Problems with mmcm kingston 2gb
larwe - 14:54 16-01-08
On Jan 16, 9:59 am, "engineer666" wrote:
> i sent the mmc commands but i havent response from memory... im using the
> same circuit on proteus vsm and it works fine.
It's not even vaguely clear what you're talking about, but note that
2GB is the cutoff point; all 2GB and larger cards us...Re: Small Linux Box Buying Guide?
Clifford Heath - 22:59 10-01-08
Robert Klemme wrote:
> I would like to do some network experimenting and maybe even run a small
> experimental web server. For this I am trying to find a small box
> capable of running Linux or BSD, ideally without harddisk and low power
> consumption (think of a device much like the DSL...Re: Requires an SDIO Host controller for testing a SDIO card
munnangi - 23:18 04-12-07
> munnangi wrote:
> > Hello all,
> >
> > Has anyone had experience in writing the SDIO controller card
> > software? I am working on a SDIO controller software using the SPI
> > interface. The controller being used is PIC.
>
Hello,
First of all thank you for your reply. It s...MAX3002 MAX3003 SPI 3.3v <> 5v Level Translation
Aly - 21:11 19-11-07
Hello,
Would anyone have experience of these parts? Namely, caveats and design
considerations?
I'm intending to use a suitable level translator between a 5v dsPIC (It has
to be 5v for an 8-bit bus) and a 3.3v SPI MMC/SD card.
A voltage divider isn't really suitable due to 3.3v not quite ...SD Card License question
dom - 07:10 18-11-07
Hello,
I'm thinking about adding a microSD Slot to a very tiny device.
The Problem is, that www.sdcard.org seems to charge a lot of "protection
money" if you implement anything with SD Cards that's going to be sold.
(something like $3000/year)
The device does not need ANY specific SD feature...PIC wav player
merco - 15:25 24-10-07
hi.
I'm trying to porting the code in
http://www.sfcompiler.co.uk/wiki/pmwiki.php?n=SwordfishUser.SDMMCWavPlayer
to mikroC.
I have some problem about buffer underrun.
I'm using p184620@32Mhz. The wav file is 8 bit mono 16KHz, as
explained in the article.
Probably the MMC/FAT routines in Swo...Re: Floppy emulator with flash media
tns1 - 14:41 05-09-07
Vladimir Vassilevsky wrote:
> "tns1" wrote in message
> news:8CdDi.156780$zz2.152590@newsfe12.phx...
>
> > Are there any commercial adaptors that would replace a floppy drive with
> > some type of flash storage (sd, mmc, thumb drive)? To the host, this
> > would have to look just like t...SD Card woes
Peter Dickerson - 08:07 02-09-07
I have a SD card connector attached to a Sharp LH75410 ARM processor via SPI
using the SSP hardware. This has been working for ~9 months with a variety
of SD and MMC cards. However, recently I have found a couple of SD cards
that don't seem to work. I don't mean they don't initialize but that ...SD / MMC on AT91SAM7S256
Peter Pippinger - 17:24 21-08-07
Hello NG,
i have the SAM7-P256 DEV-Board from Olimex.
But if i open and compile the mmc demo - it doesn=B4t work.
http://www.olimex.com/dev/soft/arm/SAM7/MMC.zip
Is there something i have to change after downloading it?
Thanks for any help.
Regards,
Peter
...Trying to find a suitable dev kit
D. - 09:06 18-08-07
Hello group,
I have a set of requirements for a development board, and although I have
found some candidates, I'm pretty sure that I missed some others. So before
I make a choice, would you know of any dev board that fits the bill?
- processor with MMU and full support for virtual memory
...Writing few bytes to MMC
zaheershamsi - 07:10 30-07-07
Hi everybody!
Is it possible to write few bytes of data to MMC instead of writing a
block of 512 bytes. But remember I am asking it for SPI mode.
I know it is possible in Multimedia Card Mode but I am using SPI
protocol.
This is the code which I am following for writing single block.
/*-----...Simple Still Camera components?
amerdsp - 22:31 29-07-07
Greetings,
I am trying to design and implement a very simple camera that would
capture VGA quality images and store them to flash memory such as SD
or MMC.
I am seeking the advice of the experienced people out there about
the recommendations for a microcontroller and image sensor
combinat...Embedded Filesystems Library problem...
Pawel K - 09:23 22-06-07
Hello,
I use EFSL v0.2.8 stable from http://efsl.be with ATMEGA 128.
I can mount FS, open & write/read file but i have 1 problem. First close
file, unmount fs, remove MMC from socket.
I put mmc in socket, initialise file system again and
my program freeze, what wrong?
--
--
Pozrdawiam
P...Re: Can anyone identify the manufacturer of this Chip ?
Antti - 07:09 21-06-07
On Jun 21, 1:01 pm, Jan Panteltje wrote:
> On a sunny day (Thu, 21 Jun 2007 17:27:08 +1000) it happened Mark McDougall
> wrote in
> :
>
> > Gene S. Berkowitz wrote:
>
> > > According to the manufacturer (Century Corp, Japan), it stripes the data
> > > across the multiple ca...Re: MCORE
16:46 07-06-07
On Jun 4, 9:11 am, Ram wrote:
> Hi All,
>
> I have to start working over Motorola MCORE microcontroller.
>
> Can anybody suggest any doc(data sheet) and web sites from where i can
> get initial information.
>
> Can anyone please give me overview of the MCORE as i am completly new
...Re: AVR AT327000
Bob Smith - 00:06 24-05-07
Dan N wrote:
> I've been shown a new dev kit for the AVR AT327000 that uses embedded
> linux and I wanted to get advice and opinions on this processor. I'm not
> familiar with AVR processors at all.
You're probably talking about the NGW100 kit from Atmel.
It has an AVR32 processor, an MMC s...Re: multiple SD/SDIO cards on the same bus
Gene S. Berkowitz - 00:33 15-04-07
In article ,
tantalum73@gmail.com says...
> Does anyone know if it is possible to design a device that has
> multiple SD/SDIO slot
> sharing the same SD bus and has two or more cards inserted and
> operational at the same time?
> How does one resolve the bus contention issue?
>
> ...RTC on dsPIC33F
fatbald1 - 04:30 13-04-07
Hi All
I hope someone can help me here. I've tried Microchip, but maybe I'm
not explaining things well enough. I have a board which has a
32.768KHz crystal directly connected to the SOSCI/SOSCO pins on the
dsPIC. After setting up the configuration bits correctly, for running
internal FRC w...Re: FATxx on a Compact Flash
msg - 02:30 30-03-07
Tim Wescott wrote:
> I dimly remember an article in Circuit Cellar that showed a CF card
> being accessed via SPI, and using a FAT12 or FAT16 file system.
>
> Has anyone had any recent experience with making this sort of thing
> work? Any good libraries out there to use?
I'm doing...Re: composite video -> SD card
spartan3wiz - 06:11 14-03-07
On Mar 13, 10:49 pm, 4MLA1FN wrote:
> i'm contemplating a minimalist, small, digital video recorder that
> writes to an SD card or other flash standard. no screen. only a stop
> and record button. audio, which would at best be mono, isn't really
> necessary. my source is composite video...Re: SD Card driving recipe desperately needed / SanDisk problems
Stef - 03:46 19-02-07
In comp.arch.embedded,
analox wrote:
> Hey all,
>
> I am having problems using Sandisk SD cards in my embedded
> application. (SPI mode, one data line, interfacing consists of
> CS,CKK,DI,DO)
> Many other makes (eg Kingston) work fine here, but the customer wants
> Sandisk (due to ...Re: Any Tool to Write-Protect microSD? (or SD)
Paul Taylor - 01:40 08-02-07
On Thu, 08 Feb 2007 06:00:42 +0000, Tom wrote:
> you will have to write your own
> software to access that particular register.
Some example code can be found on the internet for general writing to a
mmc with spi. Quickest route might be to start with that, to see how
others have done it...Re: OTP Secure Digital ?
Paul Taylor - 04:08 01-02-07
On Wed, 31 Jan 2007 15:40:15 +0000, Peter Dickerson wrote:
>
> The CSD register of the SD interface contains a write-once bit called
> PERM_WRITE_PROTECT that does the follow (quoting)
> "Permanently protects the entire card content against overwriting or erasing
> (all write and erase
...AT91RM9200 - problem with SD/MMC
Pelos - 04:06 25-01-07
Hi.
I have problem with transmission between ARM and MMC/SD on my board.
I tested with 16MB SD from Panasonic and 256MB Kingston MMC.
Here is my board http://twarm.pelos.pl/viewtopic.php?t=2
I use kernel 2.6.19 with patches from maxim.org.za
The connections are:
MMC CPU
8 -> PB3
7 -> P...SD-MMC writing FAT
Rocky - 07:53 30-12-06
Hi All,
I am starting some work that would be using an SD card (in MMC-SPI
mode) and I was hoping to use a PIC or similar low memory chip.
The idea was to use Lewin Edward's DOSFS (www.zws.com) as it only
requires about 1KB RAM.
The problem is that according to the SANDISK spec one can do...Re: Need a SD (memory card) controller chip.
11:25 10-12-06
In article , Stef wrote:
> In comp.arch.embedded,
> Peter Dickerson wrote:
> > "Stef" wrote in message
> > news:893c$45794128$54f63171$29655@publishnet.news-service.com...
> > >
> > > I think you've got it backwards. SD cards wil work in MMC slots in most
> > > case...Re: Need a SD (memory card) controller chip.
Boki - 00:24 06-12-06
Boki =BCg=B9D=A1G
> Hi All,
>
> I need a SD memory card controller chip, I also need to porting some
> MCU code, and need UART interface, low speed as 9.6K is enough.
>
> Best regards,
> Boki.
Dear All,
Due to the cost, I hope it only support SD ( no need to suppor others,
...Re: 3.3v <> 5v interfacing @ 15Mhz
PeteS - 08:07 25-11-06
Alison wrote:
> Hi,
>
> Please may I ask for assistance? I need a reliable method of interfacing an
> SPI SD/MMC card to a dsPIC. At the moment I'm using a 1k8/3k3 voltage
> divider on the 5v ----> 3.3v signals, and connecting the 3.3v ----> 5v
> signals straight to port.
>
> I...Re: External memory with ARM7 philips lpc2138
Donald - 19:29 23-11-06
Ulf Samuelsson wrote:
> Donald wrote:
>
> > Xarion wrote:
> >
> >
> > > Hey everyone
> > >
> > > What options do i have to interface external memory for my arm7
> > > chip? CF, USB, PSD?
> > >
> > > Thanx :-)
> > > xarion
> > >
> > >
> >
> > Have you selected the ARM chip...