Hi everybodyI have linux 2.6.15 on AT91SAM9261 that has AT45DB321D as dataflash.I need to write an application that erases the content of...
Hi everybodyI have linux 2.6.15 on AT91SAM9261 that has AT45DB321D as dataflash.I need to write an application that erases the content of dataflashnot at boot-time but while the system is running. Is this possible?I'd like to have suggestions on how to proceedThankyou all
Hi,Does anybody tell me how can I delete completly an atmel dataflash witU-Boot. I try this first: 1. I unprotect the areas of the...
Hi,Does anybody tell me how can I delete completly an atmel dataflash witU-Boot. I try this first: 1. I unprotect the areas of the dataflash. 2then i want to erase but i become follow messages: start and/or end adresnot on sector boundary. I look at the atmel site datasheet of thdataflash, but i can't find there anything else sector boundaries. Thanks for your answers. ...
HiI have a AT91RM9200 evaluation kit (AT91RM9200_EK).I want to know how could I use any devices other than DataFlash card forbooting the...
HiI have a AT91RM9200 evaluation kit (AT91RM9200_EK).I want to know how could I use any devices other than DataFlash card forbooting the board and downloading the Win CE image?when I say "any devices other than DataFlash card" I mean onboard parallelflash or the MMC,SDcard and so on.thanks
Despite scouring the datasheet, I cannot find the answer to this question:Can you safely apply 5V inputs to Atmel Dataflash devices?...
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 like to not get involved in lots of level shifting.-- Tim Mitchell
hi,I have designed board with AT91RM9200 microcontroller and I've got someproblems with programming it... I wanted to program any bootloader...
hi,I have designed board with AT91RM9200 microcontroller and I've got someproblems with programming it... I wanted to program any bootloader intoconnected AT45DB041D dataflash. Right now I can't send data via DBGU - Ithought it is MAX3232's fault but I replaced it and still nothing. Howeversending data from ARM to PC works ok.Instead of programming dataflash with xmodem I tried to do it th...
Hi allI wrote a flash file system for an 8051 project using a 2MB dataflash overthe last 3 years. I tried to stay as close to stdio from dos...
Hi allI wrote a flash file system for an 8051 project using a 2MB dataflash overthe 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 makesus cleverer. I needed some special functionality like shrinking the filefrom the front like a FIFO that caused me to veer of a bit (programmer?screative license).
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...
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 the PCB track length of the SPI bus can be about 20cm in total length.(1) Are there any "rule o...
Hello all,I have built a board that contains (besides a lot of other stuff) anAT91RM9200 and an AT45DB642 dataflash chip.Now I'm trying to...
Hello all,I have built a board that contains (besides a lot of other stuff) anAT91RM9200 and an AT45DB642 dataflash chip.Now I'm trying to code a homebrew boot loader. For a number of reasons, Icannot use U-boot.The boot loader works fine when loaded using a JTAG debugger (J-link), butit won't work when I try to load it using the boot ROM code that's builtinto the MCU.The MCU actuall...
Hi,Ive been developing a board based on the AT91rm9200 (arm920t). I haveadded 16 MB ram to this board, and am looking to add some...
Hi,Ive been developing a board based on the AT91rm9200 (arm920t). I haveadded 16 MB ram to this board, and am looking to add some flash.I want Linux installed on this board. (this is basically an educationalproject)My question is, do i HAVE to add a parallel flash? will such a systembe capable of running Linux if i just add an 8MB SPI dataflash?As far as i know, a parallel flas...
Just been to uk.farnell.com to check forserial flash memory and almost all areAwaiting Delivery / Out of Stock / No Longer Manufactured.Is...
Just been to uk.farnell.com to check forserial flash memory and almost all areAwaiting Delivery / Out of Stock / No Longer Manufactured.Is there something else that is supposed toreplace the serial flash or what?
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...
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 startpoint, and I can get it to boot if and only if I disable my dCache.Im imaging there is a setting somewhere Im over looking that is still trying to map the caches with 32MB of ram (which the dk has)but I ha...
Since I'm doing a port for an architecture using also SPI flashfor booting u-boot I need to remove the existing CFG_DATAFLASHconfiguration...
Since I'm doing a port for an architecture using also SPI flashfor booting u-boot I need to remove the existing CFG_DATAFLASHconfiguration which should be portable as the name says butit is hardcoded only for the AT91RM9200DK platform.Don't know which one came to this idea also naming the AT45DBdriver to dataflash.c.Asking here if someone could test the my changes so not onlyAT91...
Hello experts,I am using ARM7 for a project that needs to handle about 1 MB of systemdataand 1MB of logdata stored in a dataflash.I have...
Hello experts,I am using ARM7 for a project that needs to handle about 1 MB of systemdataand 1MB of logdata stored in a dataflash.I have been used to the database API in Windows CE, and have always found itvery useful for smaller systems.Could someone advice on what I could do in my ARM7 project? How do youhandle data? Is there any good embedded databases around for this purpose?...
Hi Im new to ARM9 processors and have the following problem: i want to runany executable code (that i can change) on my plattform.So i...
Hi Im new to ARM9 processors and have the following problem: i want to runany 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 itas stated on the atmel page by setting the jumper to INT then load theDataflashBoot.bin then load the u-boot to the dataflash. So far OK, cansee the u-boot image at position c0008000. Wh...
Hi, Im a newb to working at this level with the kernel. (mainly a hardwareguy)Anyways im trying to get 2.6.14 to run on my custom board. Ive...
Hi, Im a newb to working at this level with the kernel. (mainly a hardwareguy)Anyways im trying to get 2.6.14 to run on my custom board. Ive got 16MBof SDRAM and 2MB of Dataflash, it enters the kernel but page faults,belowis the whole nitty gritty, any suggestions on what could cause this/ weretolook for a solution?U-Boot 1.1.2 (May 17 2006 - 15:46:16)U-Boot code: 20F00000 ->
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...
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) a random scattering throughout a portion of the memory.Anyone experienced something like this ...
I have a custom SAM9260 board, several of these will be installed incustomer locations. Once installed they will not be...
I have a custom SAM9260 board, several of these will be installed incustomer locations. Once installed they will not be physicallyaccessible.I currently have a 2.6.20 kernel and a ext2 gzipped rootfs runningfrom dataflash.I need suggestions on how to remotely upgrade the software in thefuture for this device from the network.I guess I can have a NFS or tftp server on a customer net...
I am trying to design a new board based on the AT91SAM9260 processorand had a few questions :- Any idea if the DP83848CVV Phyter from...
I am trying to design a new board based on the AT91SAM9260 processorand had a few questions :- Any idea if the DP83848CVV Phyter from National Semi would work withthis proc. (it supports both RMII and MII)- I am not clear as to point of having both 16-bit NAND flash andserial DataFlash as shown in the AT91SAM9260-EK. It seems like onecould use either flash chips for running linux, ...
I tried posting this once before but I think it was rejected becauseof inline images, i'll try posting it again with links to the images:I...
I tried posting this once before but I think it was rejected becauseof 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 onthe 18Mhz clock.This is a scan from the SAM9260-EK (reference) board, when there's anydata written to the dataflash, a probe on the crystal shows thispattern. (notice the slight...
I have a board based on the AT91RM9200, and want to boot from SPIdataflash. The loader will proceed to boot u-boot (Which is too bigfor the...
I have a board based on the AT91RM9200, and want to boot from SPIdataflash. The loader will proceed to boot u-boot (Which is too bigfor the ROM bootloader to handle). I have read the atmel appnote onthat, but boot program will need to be changed. My SDRAM isconfigured differently than the DK. The program with the appnoteincludes source, but it is missing quite a bit to be able to be...
