Hello,members! I want to add a debugging stub on AT91RM9200 target,I've looked at some information about it,but i don't know how to write...

Hello,members! I want to add a debugging stub on AT91RM9200 target,I've looked at some information about it,but i don't know how to write that AT91-stub.c? Introduction is: On the host, GDB already understands how to use this protocol; when everything else is set up, you can simply use the `target remote' command . On the target, you must link with your program a few special-purpos...

Hi, I am doing a prototype baord based on AT91RM9200.I am planning to use Intel Strataflash memory (E28F640J3A)on the board.This flash memory...

Hi, I am doing a prototype baord based on AT91RM9200.I am planning to use Intel Strataflash memory (E28F640J3A)on the board.This flash memory is having a program enable input.How can i connect this to the processor, while interfacing?If anyone is using the same flash, please suggest. Also I would like to understand how does the USB_DP_PUP signal enable/disable the pull-up resistor on DP?(Re...

Hello, we are designing a microcomputer named "Comet" based on the Atmel AT91RM9200 controller. All design files and software will be...

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 down the design and start building the PCB it would be nice to hear what you think which optional building blo...

Is there anybody who has used the SSC of the atmel AT91RM9200 in master mode to control an audio DAC ? I used the settings as described in the...

Is there anybody who has used the SSC of the atmel AT91RM9200 in master mode to control an audio DAC ? I used the settings as described in the Atmel application note in my device driver, but when a data to the driver and watch output on a scope I see that left and right channels sometimes swap. After this I did a test by writing only one short ( 16bit ) into the SSC_THR and watch this da...

Hello, We're having two ethernet problems with an Atmel AT91RM9200 CPU based construction. I'm interested if we are the only one having these...

Hello, We're having two ethernet problems with an Atmel AT91RM9200 CPU based construction. I'm interested if we are the only one having these problems... Our first attempt were to use a 16MHz crystal and the AT91 built-in PLL and programable clocks to generate the required 50Mhz and 25Mhz needed for a Davicom DM9161 PHY and a Davicom DM9000 10/100 ethernet controller (thus giving us two e...

Hi , Im trying to port linux to a custom board i designed (based on the AT91RM9200 ). But im faced with a problem - after the execution of...

Hi , Im trying to port linux to a custom board i designed (based on the AT91RM9200 ). But im faced with a problem - after the execution of the kernel is started , at the very first instruction , i get an invalid instruction message ( which further prints all the register values) ..what could be the reason for such an error? Further , what other Free Operatign systems are avaliable that ...

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...

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 DK. The program with the appnote includes source, but it is missing quite a bit to be able to be ...

hi, I have designed board with AT91RM9200 microcontroller and I've got some problems with programming it... I wanted to program any bootloader...

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 sending data from ARM to PC works ok. Instead of programming dataflash with xmodem I tried to do it th...

Hi everyone, ive been trying to interface a 16MB SDRAM (MT84LC8M16A2, 128Mbit, 2x16x4)with an AT91RM9200 on my custom board. The SDRAM and the...

Hi everyone, ive been trying to interface a 16MB SDRAM (MT84LC8M16A2, 128Mbit, 2x16x4)with an AT91RM9200 on my custom board. The SDRAM and the uC are placed close to each other on the 2-layer PCB (which me and my friend designed). I wrote a small SDRAM test program that sends a unique *byte* to each location of the SDRAM, and then reads it back..it ran without any errors, all values mat...

Hi, We build own at91 board with an AT45DB642 and 64MB of SDRam. Above I'll describe some details. At45DB642 is attached to at91rm9200 on...

Hi, We build own at91 board with an AT45DB642 and 64MB of SDRam. Above I'll describe some details. At45DB642 is attached to at91rm9200 on CS0 and SDRam is using a 32bits of data path. We already tested both, and they are working without any kind of problem. We wrote data on At45DB642 and read it without errors, the same occured with SDRAM. What occurs is that when we run a program f...

Hi, I have a simple startup code for a at91rm9200 processor. The idea was after the processor setup to restore the processor context saved in...

Hi, I have a simple startup code for a at91rm9200 processor. The idea was after the processor setup to restore the processor context saved in stack pointed by pCurrStack variable. I don't know where could be a problem becuase it sometimes works but more often it doesn't work. This code is downloaded by u-boot so some startup seuences are not necessary. I'll be gratefull for comme...

Hi, im learning how to use the AT91RM9200..right now im trying to tackle the AIC. iv set everyhting up, earmarking PIOA0 for an...

Hi, im learning how to use the AT91RM9200..right now im trying to tackle the AIC. iv set everyhting up, earmarking PIOA0 for an external interrupt through a switch connected to it, so that theoretically whenever the switch is pressed, an interrupt is generated that sends a string via the debug port to hyperterminal. everythings fine, but when i press the switch once, i get 2 interrupts....

Hi all, I used the buildroot to create the linux kernel and the root filesystem for the atmel at91rm9200-ek board. I configured the buildroot...

Hi all, I used the buildroot to create the linux kernel and the root filesystem for the atmel at91rm9200-ek board. I configured the buildroot to generate zImage. Also I did not change much of the configuration for busy box except that i disabled all options in the "Login/Password Management Utilities" list. Buildroot generated binary files zImage, rootfs.arm.ext2. Then using gzip i generate...

Hi all, after disabling the data and I cache my kernel boots! However Im having initrd load issues, I load in a ext2 image at 0x20A00000 and I...

Hi all, after disabling the data and I cache my kernel boots! However Im having initrd load issues, I load in a ext2 image at 0x20A00000 and I get an odd error listed below.. suggestions? Linux version 2.6.14 (roboman@gooseProduction) (gcc version 3.4.5) #6 Thu May 25 21:15:23 EDT 2006 CPU: ARM920T [41129200] revision 0 (ARMv4T) Machine: Atmel AT91RM9200-DK Memory policy: ECC disabled, D...

Hi, I'm going to run my board with AT91RM9200. My board has 32bit SDRAM (2 x HY57V561620C) data bus width. I saw that some data lines was tied...

Hi, I'm going to run my board with AT91RM9200. My board has 32bit SDRAM (2 x HY57V561620C) data bus width. I saw that some data lines was tied together D24 D25 and D26 (close to CPU). I reworked them - now looks clear (I checked contacts too) but my memory test shows that lines D24 and D25 are still high. So my question is - Is it Atmel so fragile ? Could I broke it ? Here is part of m...

Hi all, Now we are in study phase in analyzing to identify the microcontroller which is having in-build Ethernet port, memory interface...

Hi all, Now we are in study phase in analyzing to identify the microcontroller which is having in-build Ethernet port, memory interface (say CF) and USB port. Now we chose AT91RM9200 tha is the one which is having all these options. Could we interface any touch screen display with this microcontroller? If yes, how we have to interface it. My advance thanks to you. with regards mar...

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...

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 is that spontaneously while running , the System automatically Resets. This was not happening prior ...

Hi all, I used the buildroot to create the linux kernel and the root filesystem for the atmel at91rm9200-ek board. I configured the buildroot...

Hi all, I used the buildroot to create the linux kernel and the root filesystem for the atmel at91rm9200-ek board. I configured the buildroot to generate zImage. Also I did not change much of the configuration for busy box except that i disabled all options in the "Login/Password Management Utilities" list. Buildroot generated binary files zImage, rootfs.arm.ext2. Then using gzip i generate...

Hello, I am extremely new to this stuff and just got a AT91RM9200 Linux Board. I was going to download Python to it to make some programs....

Hello, I am extremely new to this stuff and just got a AT91RM9200 Linux Board. I was going to download Python to it to make some programs. After setting it up per the setup MANUAL, it seemed to lad fine. I proceeded to download Python but it just wouldn't work. I researched and found that i had an error when booting (Error bad CRC, continuing loading Linux environment). The best fix to this proble...

Hi I'm looking into a design to convert from synchronous serial interface (SSI) to ethernet. The ethernet connection will be a direct, point...

Hi I'm looking into a design to convert from synchronous serial interface (SSI) to ethernet. The ethernet connection will be a direct, point to point connection and will probably use UDP. I have looked at the data sheet for the AT91RM9200 and it seems as though it may work. I'm new to ARM devices and also to embedded ethernet and would greatly appreciate if anyone could answer the follo...