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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 101 threads matching "dataflash"
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Problem: How to erase Dataflash
tomC - 2007-05-09 06:39:00
Hi everybody
I have linux 2.6.15 on AT91SAM9261 that has AT45DB321D as dataflash.
I need to write an application that erases the content of dataflash
not at boot-time but while the system is running. Is this possible?
I'd like to have suggestions on how to proceed
Thankyou all
...
Copy WIN CE to DataFlash
dkatana - 2007-06-25 08:23:00
Hi.
I'm new in microcontrolers. I starting with AT91RM9200 board and Windows
CE 5.0(I must use Win CE). Unfortunetly I've cleared Win CE DataFlash
card.
I have copied DataFlashBoot.bin on 0x20000000 address. How can I copy
image of Win CE to DataFlash? Should I copy some "boot" to DataFlash?
Th...U-Boot
kongs - 2005-07-30 14:38:00
Hi,
Does anybody tell me how can I delete completly an atmel dataflash wit
U-Boot. I try this first: 1. I unprotect the areas of the dataflash. 2
then i want to erase but i become follow messages: start and/or end adres
not on sector boundary. I look at the atmel site datasheet of th
dataflas...Problems with programming AT91RM9200
odi - 2009-06-08 15:27:00
hi,
I have designed board with AT91RM9200 microcontroller and I've got some
problems with programming it... I wanted to program any bootloader into
connected AT45DB041D dataflash. Right now I can't send data via DBGU - I
thought it is MAX3232's fault but I replaced it and still nothing. However
sen...AT91RM9200 and SPI Dataflash on CS0 - Linux Kernel
Pelos @ Home - 2009-10-18 15:16:00
Hello,
Does somebody have working Linux drivers atmel_spi and mtd_dataflash ?
I have AT91RM9200 with 8MB spi dataflash connetcted to SPI CS0.
Before I was using at91_spi and at91_dataflash in kernel 2.6.23 (patched
from maxim) and it was workinf fine. When I switched to the atmel_spi
and mtd_...file system on dataflash
jerome - 2006-08-15 07:52:00
Hi:
I am using At91RM9200-EK
How can I compile linux kernel, but with a file system on dataflash or
Sd-card?
Thanks in advance
Jeronimo
...Is Atmel dataflash 5v safe?
Tim Mitchell - 2005-04-08 06:44:00
Despite scouring the datasheet, I cannot find the answer to this
question:
Can you safely apply 5V inputs to Atmel Dataflash devices? (vcc=2.7V)
It quotes the "Absolute Max input voltage" as 6.25V, so presumably it
won't blow up, but will it work?
I'm using a 5V processor and would rather...AT91RM9200_EK
layaghi - 2005-12-31 09:43:00
Hi
I have a AT91RM9200 evaluation kit (AT91RM9200_EK).
I want to know how could I use any devices other than DataFlash card for
booting the board and downloading the Win CE image?
when I say "any devices other than DataFlash card" I mean onboard parallel
flash or the MMC,SDcard and so on.
thanks...Looking for large serial EEPROM or FLASH like Atmel's DataFlash
Tom - 2004-06-23 23:09:00
I'm looking for a large serial EEPROM or FLASH chip that comes in a small
package and uses a serial interface. I need something in the range of 1024
kbit - 2048 kbit in an 8-SOIC or smaller package, and it needs to be as cheap
as possible. :)
So far I've only found I2C EEPROMs like the 24C5...Re: AVR External Flash
Rob Turk - 2004-03-19 07:56:00
"Ken Jewell" wrote in message
news:4059be5f$0$31700$fa0fcedb@lovejoy.zen.co.uk...
> Hi,
> does anyone know if there are any existing routines already written
to
> access external Flash RAM (64k x 8) in either ANSI C or Assembler?
>
> Thanks in advance,
> Ken.
>
>
I've u...Re: AT91RM9200: Errors in transferring file into SDRAM via HyperTerminal (xmodem protocol)
Mayank Kaushik - 2005-05-04 00:14:00
Hello, everyone..
Thanks for your replies.
Yes, i had not recompiled loader.bin for 16-bit operation.
But i got another application from the AT91-CDROM, called
BasicDataFlash. It takes in the file to be loaded from the
hyperterminal, and stores it in SDRAM, where it modifies the 6th ARM
ve...Re: 3V <-> 5V Level shifter ?
Carsten - 2005-01-31 03:20:00
On Sun, 30 Jan 2005 14:39:36 +0100, "Meindert Sprang"
wrote:
> > Doesn't the Mega need 0.6*VCC as Vih(min) , the datasheet says so ..
> > 0.6 x 5V = 3V
>
> Correct. In my case, the LV device runs at 3.3V, and there it works. So did
> the OP really mean 3V or 3.3V?
> But even with 3V i...Re: Programming 4MBit ST Flash
Ulf Samuelsson - 2004-03-24 20:21:00
"Klaus Vestergaard Kragelund" skrev i meddelandet
news:4060acaf$0$258$edfadb0f@dread12.news.tele.dk...
> Hi
>
> I have a serial flash device, M25P40, which is programmed via SPI
interface
>
> I have been searching the web and STs homepage and found nothing. Isn't
many
> of thes...Weird clock signal on dataread (AT91SAM9260)
2007-05-22 13:29:00
I tried posting this once before but I think it was rejected because
of inline images, i'll try posting it again with links to the images:
I have a 6 layered sam9260 board and I'm seeing something strange on
the 18Mhz clock.
This is a scan from the SAM9260-EK (reference) board, when there'...Re: AVR Butterfly External Flash Access
2006-04-30 21:12:00
Awesome! Well ok, I'm using ICC 7. I'm coding in C. I have the cheap
avr programming from atmel. I usually write my own code but I'm
focusing on just getting the demo code to work (this ships with ICC7).
What concerned me about the dataflash not working was a document I saw
showing 2.7v operatio...Re: Flash / IC used in SD Cards.
Ulf Samuelsson - 2004-11-12 12:39:00
> We would also have some 'internal' filespace. So i thought of placing
> a second memory on the PCB and on the same SPI bus. This would save
> the work of writing a different driver.
>
> Offcoarse i could add a second SD Card socket to my pcb, but i was
> wondering if the chip used ins...Weird clock behaviour on dataread (AT91SAM9260)
2007-05-22 11:02:00
I have a 6 layered sam9260 board and I'm seeing something strange on
the 18Mhz clock.
This is a scan from the SAM9260-EK (reference) board, when there's any
data written to the dataflash, a probe on the crystal shows this
pattern. (notice the slightly raised ground, which then stabilizes and
...Re: AT91rm9200 Devel. Board (Student Project): Choice of OS??
Ulf Samuelsson - 2005-02-11 11:01:00
>
> EBV is supporting my project and supplies AT91RM9200 QFP samples...
> so probably PCB design will be finished by next week:
> - 100 * 160mm2
> - AT91RM9200-QI-002
> - 64MB SDRAM
> - 8MB flash
> - CF slot
> - USB A/B
> - Ethernet
> - RS232/JTAG
>
> Nothing fancy though ...Re: What's inside a USB flash drive?
KenHopkins - 2005-06-15 03:06:00
I think some of them use Atmel DataFlash like at64DBxxxx type chips.
Ken
www.claymore-electronic.co.uk
...SPI DataFlash vs parallel Flash for running Linux on an ARM board
Mayank Kaushik - 2005-03-16 05:10:00
Hi,
Ive been developing a board based on the AT91rm9200 (arm920t). I have
added 16 MB ram to this board, and am looking to add some flash.
I want Linux installed on this board. (this is basically an educational
project)
My question is, do i HAVE to add a parallel flash? will such a system
...Interface Freescale MC9S08Gxx with Atmel DataFlash / Serial Flash ??
ch - 2006-08-22 23:36:00
Hi,
I am currently working on a project that requires me to interface an
existing platform to an external memory, for additional storage. Below
is a block diagram of what I intend to do.
[PC serial port] [existing platform board] [Serial Flash]
The reason of interfacing with my exis...AT91SAM9260 booting and board questions
2007-03-14 14:20:00
I am trying to design a new board based on the AT91SAM9260 processor
and had a few questions :
- Any idea if the DP83848CVV Phyter from National Semi would work with
this proc. (it supports both RMII and MII)
- I am not clear as to point of having both 16-bit NAND flash and
serial DataFlash...Re: NGW100 - store root and /usr images for later restore
Ulf Samuelsson - 2008-10-28 16:10:00
"Eric" skrev i meddelandet
news:o5s8g4hrkfnhq7cou0j2gtm7tfu47j8cu7@4ax.com...
>
> I was recently given an Atmel NGW100 board (AVR32) and have been
> learning about it.
>
> I have gotten to the point where I can load root and /usr images to
> the board and run them.
>
> What I nee...SPI Bus noise reduction, any ideas?
Rob Horton - 2007-06-08 06:21:00
I have a number of boards with processors that communicate to about 10
different SPI connected devices, all on the same bus. 1 of these happens
to be an Atmel DataFlash. The DataFlash appears to be experiencing a
corrupted memory problem. These boards exist in fairly noisy
environments and t...Re: MP3 decoder
Ulf Samuelsson - 2006-05-04 13:03:00
Maki wrote:
> Hello all,
> I'm considering a replacement for an ISD4004 voice audio chip with an
> MP3 decoder [ extended temp. range if possible ]. Any experience with
> using these kind of chips and recommendation of which one to use
> would be appreciated.
>
Check out the AT89C51SN...Re: data flash emulators
Ulf Samuelsson - 2005-02-21 01:56:00
skrev i meddelandet
news:1109048035.667259.151790@l41g2000cwc.googlegroups.com...
> Remember the days when EEPROM emulators were being used as a way of
> getting the code onto the target and executing the code on the target.
> I was wondering if there is an equivalent for data flash which ...Re: SimmStick FPGA module
Ulf Samuelsson - 2005-02-15 01:29:00
"Pablo Bleyer Kocik" skrev i meddelandet
news:1108427617.762469.128840@g14g2000cwa.googlegroups.com...
> Martin Schoeberl wrote:
> > I would be happy to go the KISS path, but I don't know how one can keep
> > a soft-cpu module simple to handle. You have too many options: You're
> > de...Re: Atmel sells fabs
larwe - 2006-12-14 22:26:00
Jonathan Kirwan wrote:
> This smacks of that, to me. If a company making ICs can't use their
> FABs as well as they can use the money they will get for selling them,
> they probably shouldn't be in the business of running FABs at all.
> This "Fab lite" policy worries me. What about you...Flash File System for Dataflash
heindekock - 2009-09-07 11:05:00
Hi all
I wrote a flash file system for an 8051 project using a 2MB dataflash over
the last 3 years. I tried to stay as close to stdio from dos (fopen, etc)
as possible. I had to shape and change it a few times as hind sight makes
us cleverer. I needed some special functionality like shrinking the...AT91RM9200 linux woes
roboman152 - 2006-04-21 13:29:00
Ok So Im to the point I dont know what to try next. Im trying to bring my
custom AT91RM9200 board to life. I have 16MB of SDRAM on CS0 (starting at
0x20000000 ending at 0x21000000)
and 2MB of data flash at 0xC0000000. First step was getting uBoot
running. Which for some reason if I stick uBoot (1....AT91RM9200 - Vector 6 for dataflash boot woes
Haroldp - 2007-09-08 08:53:00
Hello all,
I have built a board that contains (besides a lot of other stuff) an
AT91RM9200 and an AT45DB642 dataflash chip.
Now I'm trying to code a homebrew boot loader. For a number of reasons, I
cannot use U-boot.
The boot loader works fine when loaded using a JTAG debugger (J-link), but
it ...Re: debug u-boot using BDI2000
Tutu - 2006-12-18 20:01:00
>
> http://www.at91.com/www/phpBB2_mirror/viewtopic.php4?t=322
>
the link inside this Atmel post doesnt work ! But there were other
stuffs which I could pick up ..such as minicom configuration !
Also, I am using parallel flash and most of the solutions were based on
DataFlash and that t...Re: Using a small 8-bit micro (LPC900) as external reset / watchdog device!?
Ulf Samuelsson - 2005-02-08 02:58:00
> Our design needs to have a timed reset (shorter!) to get up to speed
> faster.
> External supervisory circuits are more expensive and a lot less
> versatile than low end micros...
> With all these benefits and still so many reset devices on the market,
> I must have missed some import...Re: Lowest power 32-bit MCU with PCI, SDRAM?
Ulf Samuelsson - 2004-11-02 17:20:00
"Rene" skrev i meddelandet
news:4187ffba$0$28026$5402220f@news.sunrise.ch...
> "Ulf Samuelsson" schrieb im Newsbeitrag
> news:2uqbo3F28fe67U1@uni-berlin.de...
> >
> {parts deleted}
>
> > Maybe you could be interested in the Comet Board developed at the
> > Fachhochschule in...Database for flash
Henrik [6650] - 2006-04-03 04:22:00
Hello experts,
I am using ARM7 for a project that needs to handle about 1 MB of systemdata
and 1MB of logdata stored in a dataflash.
I have been used to the database API in Windows CE, and have always found it
very useful for smaller systems.
Could someone advice on what I could do in my A...Atmel Dataflash (AT45DB642) anyone experienced stuck bits?
Rob Horton - 2006-10-27 10:54:00
I have been using the 8MB, AT45DB642, from Atmel for a number of years
now. It has become apparent that some of the chips we use have stuck
bits at various locations. So far this has exhibited itself in two forms.
(1) a consistent pattern that occurs through every one of the 8192 pages.
(2...Re: query on speech synthesis using microcontroller avrmega8
Ulf Samuelsson - 2005-01-21 15:16:00
> hi
> i'm working on a project which is a game based on speech in
> avrmega8.
> pl let us know how to start storing and reading speech signals in avr
> mega8
If you store the speech in 64 kbps PCM format
you will fit about 2 minutes of speech per megabyte.
If you use an AT45DBxxx data...Re: IR receiver for I2C bus?
Ulf Samuelsson - 2006-03-24 16:20:00
> > Is there such a chip that receives TV remote control IR signals and
> > stores them so they can be retreived later via I2C?
You just need a large SRAM internally to do this, and then maybe store to
SPI dataflash.
> For some TV remotes, yes. But a single chip can't generally fit all
...Re: 64MB SPI flash RAM?
Mike Harrison - 2005-06-20 13:42:00
On Mon, 20 Jun 2005 08:25:00 -0700, David Linker wrote:
> I am having trouble finding SPI flash RAM with capacities greater than 4
> MB (64 Mb). I know that there are MMC cards with 64 MB (256 Mb)
> capacities, that can easily be interfaced to SPI, but I would like to
> find the RAM with...Re: Emulating JTAG with micro for programming PROM
Ulf Samuelsson - 2006-05-04 17:16:00
scott.manton@gmail.com wrote:
> First off I am new to JTAG emulation. I am required to program a
> Xilinx configuration PROM from a microcontroller. I realize that I
> can program the PROM with a cable from the parallel port but the
> product will require field upgrades. I've been siftin...