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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 Data...U-Boot
Started by kongs 8 years ago
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_...Is Atmel dataflash 5v safe?
Started by Tim Mitchell 8 years ago
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 wo...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 o...Looking for large serial EEPROM or FLASH like Atmel's DataFlash
Started by Tom 9 years ago
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...Weird clock signal on dataread (AT91SAM9260)
Started by Unknown 6 years ago
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'...Weird clock behaviour on dataread (AT91SAM9260)
Started by Unknown 6 years ago
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
...SPI DataFlash vs parallel Flash for running Linux on an ARM board
Started by Mayank Kaushik 8 years ago
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
Started by Unknown 6 years ago
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...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...Is Dataflash going obsolete?
aleksa - 2010-10-03 15:27:00
Just been to uk.farnell.com to check for
serial flash memory and almost all are
Awaiting Delivery / Out of Stock / No Longer Manufactured.
Is there something else that is supposed to
replace the serial flash or what?
...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 ...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...at91rm9200dk u-boot port messed up...
Started by jedi 8 years ago
Since I'm doing a port for an architecture using also SPI flash
for booting u-boot I need to remove the existing CFG_DATAFLASH
configuration which should be portable as the name says but
it is hardcoded only for the AT91RM9200DK platform.
Don't know which one came to this idea also naming the ...Serial Flash
Jack - 2008-07-02 08:32:00
For an application I need to store a large amount of data (ca. 3MB). A
serial flash could be a good idea (I don't need to erase very often,
and if I erase, I will erase all the data at once).
I found Atmel's products. But there is a problem: Atmel produces 2
types of serial flash: Serial Flash...AT91RM9200 bootloaders (to boot into u-boot)
Started by Darrell Harmon 9 years ago
I have a board based on the AT91RM9200, and want to boot from SPI
dataflash. The loader will proceed to boot u-boot (Which is too big
for the ROM bootloader to handle). I have read the atmel appnote on
that, but boot program will need to be changed. My SDRAM is
configured differently than the...Lorax Proseed
KenLem - 2006-02-08 10:28:00
http://www.loraxworks.com/4f10dfae90c743d233d7c5bc1f116e19/session.php?action=news
The proSeed, the first microcontroller product from the Lorax Works
controllers family, with 128Kb of EEPROM, 128Kb of RAM, and a 70Mhz SX
microprocessor in a 24pin DIP package, presents an unheard potential
for...SPI as secondary storage on ARM dev kit?
Started by Mayank Kaushik 8 years ago
Hi,
Im trying to build a dev kit for the AT91rm9200, and have linux running
on the final board. However, due to the unavailability of buffers for
the parallel flash, i can only use the SPI DataFlash for storage, and
this is where the OS would reside.
If anyone out here has the At91rm9200-Dk...Remote Flash updates of a SAM9260 board
Started by Unknown 6 years ago
I have a custom SAM9260 board, several of these will be installed in
customer locations. Once installed they will not be physically
accessible.
I currently have a 2.6.20 kernel and a ext2 gzipped rootfs running
from dataflash.
I need suggestions on how to remotely upgrade the software in the
f...Starting Bootloader at AT91RM9200-EK
lehotzki - 2006-10-27 08:23:00
Hi
Im new to ARM9 processors and have the following problem: i want to run
any executable code (that i can change) on my plattform.
So i found the Denx u-boot and can compile it. Then i tried to download it
as stated on the atmel page by setting the jumper to INT then load the
DataflashBoot.bin...(newbie) Compiling "linux-2.4.27-vrs1-ATMEL" for a custom board..what options should i provide?
Started by Mayank Kaushik 8 years ago
Hi,
Im an undergrad working on installing Linux on a custom development
board based on the AT91RM9200 (for my senior project). Since this is
the first time im doing this, i decided to go for the
"linux-2.4.27-vrs1-ATMEL" kernle available from the Atmel site.
Incedentally, this kerne...Position independent code with position dependent data ?
nono240 - 2010-06-30 11:41:00
Hi there !
My CPU has no MMU, very little RAM (8KB), and is running a modified
FreeRTOS. I'd like to have the ability to "load" and run some code
from USART/DATAFLASH to FLASH as a RTOS task. Of course, for
convenience, the compiled code must be fully position independent.
Using the...RFC: "Comet" board with AT91RM9200
Started by Unknown 9 years ago
Hello,
we are designing a microcomputer named "Comet" based on the Atmel
AT91RM9200 controller. All design files and software will be licensed
under the GPL.
Currently the schematics is all what we have. We probably packed too much
building blocks into the design. Before we cut do...at91rm9200 Board gets reset spontaneously
Started by Mayank Kaushik 8 years ago
Hi ,
Im trying to build a Development board for the AT91RM9200 and am using
SDRAM in 16 bit mode , and 2 Mb Flash. I have managed to Store U-boot
in the Dataflash and to get it to boot from it. The Atmel Utility picks
up U-boot from the Flash and runs it from SDRAM.
The problem im having i...Amtel SAM9 "boot from NAND" is a myth?
Grant Edwards - 2010-09-15 15:23:00
We recently based a board on an Atmel AT91SAM9G20 part which the FAE
and rep said could boot from NAND flash. The eval board can indeed be
configured to boot from NAND flash. However, when it comes time to
spec parts for a real product, we find that's all smoke and mirrors.
The Atmel SAM9 pa...u-boot on AT91RM9200DK does not boot up the linux kernel
rohshall - 2008-10-27 07:46:00
Hi,
I compiled the kernel image using buildroot for the at91rm9200 development
kit (at91rm9200-dk). And I am trying to boot up the kernel using u-boot.
I have tried two ways of booting it up.
1. Using bootm command (after downloading uImage):
But though u-boot successfully identifies the im...NONE
Started by Unknown 9 years ago
Announcing the Atmel AVR Starter Kit complete with ANSI C Development Tools
Pricing:
Kit 1 - AVR (R) Butterfly hardware = $89
Kit 2 - Lawicel M32 Eval Kit = $109
Availability: June 30, 2003
The Atmel AVR is one of the fastest 8/16 bit microcontrollers available. With this starter kit, you h...linux dies on custom at91rm9200 board
amstewa2 - 2006-09-24 09:15:00
Hello all Im trying to get linux up and running on my system.
I have 16MB of SDRAM at 0x20000000 and 2MB of dataflash.
I've started with the at91rm9200dk files in the kernel as my start
point, and I can get it to boot if and only if I disable my dCache.
Im imaging there is a setting somewhere Im...Kernel panic / page fault help
roboman152 - 2006-05-25 19:57:00
Hi, Im a newb to working at this level with the kernel. (mainly a hardware
guy)
Anyways im trying to get 2.6.14 to run on my custom board. Ive got 16MB
of SDRAM and 2MB of Dataflash, it enters the kernel but page faults,
below
is the whole nitty gritty, any suggestions on what could cause this/...