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Comp.Arch.Embedded is a worldwide Usenet news group that is used to discuss various aspects of Embedded Systems development.
We found 132 threads matching "mmc"
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The most relevant threads are listed first
Re: W65C02S, Z80, 80C31 or other legacy processor?
-jg - 2009-06-01 18:37:00
On May 27, 4:16=A0pm, -jg wrote:
# This news from NXP (and yes, you can buy one MINUS USB ;)
#
# LPC1300 (demos June 26 2009, and they will be widely available from
September 2009.)
# Devices without USB start at $0.99 in 10,000 unit volumes. [8KF/2KR/
UART]
and more news, the Atmel SAM3...
image/sensor data routing and saving?
solarst - 2009-04-03 06:31:00
Lots of questions, I hope someone can guide me in the right direction!
I'm looking for some help in designing a system that can take data from an
image sensor and store it in some sort of MMC/flash memory. It will be
part of a wearable device for monitoring diet/activity constantly during
the da...Error on Request interrupt on AT91SAM9260-EK
=?ISO-8859-1?Q?Jo=E3o_Paulo_Bodanese?= - 2009-03-03 07:58:00
Hi,
I am trying to request an interrupt on IRQ 63, but when i load the
module i got the message:
setting trigger mode 2 for irq 63 failed (gpio_irq_type+0x0/0x2c)
IRQ 63 is not free.
The code is:
if (request_irq(gpio_to_irq
(AT91_PIN_PA31),interrupt_count,IRQF_TRIGGER_FALLING,"Reset_F...Re: FAT File System module Implementation in an embedded host
urefowei - 2009-02-20 21:15:00
> On Thu, 12 Feb 2009 14:33:47 -0600, urefowei wrote:
>
> > > > > http://elm-chan.org/fsw/ff/00index_e.html
> >
> > It actually leads to a discusion on a FAT File System Module that can
> > be implemented in an embedded host..
> >
> > What we wanna do is use a PIC18F4550 and a MAX3...Re: Where to get SD Card reader
2008-12-29 18:51:00
On Dec 29, 4:24 pm, sdeyo...@hotmail.com wrote:
> I'ld like to play with an SD card and a 16F886 or'690 or so.
> Where can I get an SD card reader to, say, SPI?
Most SD cards can be accessed slowly in SPI mode with no adapter
needed, something they inherited from the older MMC cards. This s...using mmc for voice recording
chimpi - 2008-12-17 06:35:00
hey folks,
i have been working on the construction of a voice recorder using memory
of MMC and ATmega 16 as the controller associated...i am using the MMC in
SPI mode... since the sampling rate of the data is quite high... so i dont
use any buffer memory before storing data to MMC, i keep the mmc...Re: SD card initialisation
Peter Jakacki - 2008-12-01 07:15:00
Uncluttering it and taking it from the top:
Quote from SANDISK Product Manual SD Card V2.2 final
- Section 3.4.1 Power Up
"ACMD41 is a special synchronization command used to negotiate the
operation voltage range and to poll the cards until they are out of
their power-up sequence. Besides...Need good quality Audio output through LPC21xx controller
2008-09-30 01:28:00
We are working on a project based on Vehicle tracking system.In one of
our module we are using audio(voice) for Public transport system.As
if for now we are using filters and a power amplifer We are not able
to get good quality audio output with this setup.
Item used:
Lpc2132 with MMC card...Re: SD card in 4-bit mode
2008-09-10 09:26:00
Jookie wrote:
> So what is the problem? Is the 4-bit mode documented on the web, but you
> can't use it legaly without paying the SD association, or there is no
> public documentation and you need to pay a fee to get that documentation?
Nowadays you can download a simplified SD card spec...sdcard access problem to lpc2378
raveendran - 2008-09-02 08:00:00
Hi,
i am new to arm lpc2378 processor. i want access sdcard in lpc 2378
processor. i downloaded example code for version chaN 0.05/nxp 1.4/mt 0.3,
i am running this code and given command to processor- di 0 :command for
initialization of sdcard i am getting this output. pls help me what is the
pro...Re: Micro Controller Advice/Help Needed
deanvesuvio - 2008-08-12 13:26:00
Rich - It seems like the LPC2138 or LPC2136 might provide a very simple
solution. Correct me if I'm wrong, but it looks like with one of these
chips, all I'd need to do is get a UART RS232 interface chip to put in
between the LPC213X and my XE2422H. Add on a power adapter and an RJ-11
jack, and tha...Netsilicon - Net + 50 hardware prob
bdutta - 2008-06-23 08:42:00
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
2008-06-03 15:24:00
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 - 2008-06-02 08:48:00
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 - 2008-05-05 06:26:00
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 - 2008-05-03 13:51:00
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 - 2008-04-24 21:12:00
> 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
2008-04-24 14:12:00
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 - 2008-04-24 07:36:00
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 - 2008-04-04 14:01:00
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 - 2008-03-26 15:10:00
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 - 2008-03-24 17:15:00
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 - 2008-01-16 14:54:00
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 - 2008-01-10 22:59:00
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 - 2007-12-04 23:18:00
> 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 - 2007-11-19 21:11:00
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 - 2007-11-18 07:10:00
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 $3000/year)
The device does not need ANY specific SD feature...PIC wav player
merco - 2007-10-24 15:25:00
hi.
I'm trying to porting the code in
http://www.sfcompiler.co.uk/wiki/pmwiki.php?n=SwordfishUser.SDMMCWavPlayer
to mikroC.
I have some problem about buffer underrun.
I'm using p184620@32Mhz. The wav file is 8 bit mono 16KHz, as
explained in the article.
Probably the MMC/FAT routines in Swo...Re: Floppy emulator with flash media
tns1 - 2007-09-05 14:41:00
Vladimir Vassilevsky wrote:
> "tns1" wrote in message
> news:8CdDi.156780$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 - 2007-09-02 08:07:00
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 - 2007-08-21 17:24:00
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. - 2007-08-18 09:06:00
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 - 2007-07-30 07:10:00
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 - 2007-07-29 22:31:00
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 - 2007-06-22 09:23:00
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 - 2007-06-21 07:09:00
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
2007-06-07 16:46:00
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 - 2007-05-24 00:06:00
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 - 2007-04-15 00:33:00
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 - 2007-04-13 04:30:00
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...