Hi, Im working on a prototype board for the AT91rm9200. I have been following the design of the AT91rm9200 EK. In using the same flash as...

Hi, Im working on a prototype board for the AT91rm9200. I have been following the design of the AT91rm9200 EK. In using the same flash as the obe used on the board, i have a small problem. Why have buffers been used between the chip`s lines and the lines of the flash? i have seen boards that use different flash chips and dont have buffers for the flash. What is the use of the buffer ...

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...

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 won't work when I try to load it using the boot ROM code that's built into the MCU. The MCU actuall...

Hi, I'm working on the AT91RM9200-EK board. I've built my own u-boot for booting. My u-boot boots the board properly. It is completely fine....

Hi, I'm working on the AT91RM9200-EK board. I've built my own u-boot for booting. My u-boot boots the board properly. It is completely fine. The problem is that when I follow the procedure to reprogram the flash, using the file on Atmel CD, loader.bin then using my u-boot.bin, I do not get a U-Boot prompt. I am using the u-boot.bin on the Atmel CD for programming the flash and then use my u-...

Hi, Im an undergrad working on installing Linux on a custom development board based on the AT91RM9200 (for my senior project). Since this...

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 kernel is built for the AT91RM9200-EK. But i was befuddled when it came to "make menuconfig"..what are the opti...

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...

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 image, the kernel does not boot up. Here is what I see on console: [/START] U-Boot> bootm 20008000

hi all, I am using AT91RM9200 board. I have some sample code in ADS compiler & assembler. But because I a using Embest IDE with GNU build...

hi all, I am using AT91RM9200 board. I have some sample code in ADS compiler & assembler. But because I a using Embest IDE with GNU build tools, I have to convert the assembly file to gcc assembly. I have done the conversion of the file below, but fail. Anyone knows what I have done wrong here? =========================================== 1. /* original file for ADS assembler */ ===========...

Hi, Im a senior undergrad working on a project to develop an AT91RM9200-based development board, which will be my final undergrad project....

Hi, Im a senior undergrad working on a project to develop an AT91RM9200-based development board, which will be my final undergrad project. Till now, i have been working on interfacing stuff to this controller, setting up its internal peripherals to build interfaces for a final development board. Nows the time to start thinking about having an OS running on the final product. To this end...

I want to design a system with dual ethernet port using at91rm9200,which Ethernet chip should i choose?How to control the Ethernet chip...

I want to design a system with dual ethernet port using at91rm9200,which Ethernet chip should i choose?How to control the Ethernet chip using at91rm9200? It need work at 100Mbits/s

Hello everyone: I like to build U-Boot for the Atmel AT91RM9200 ARM9 demo board. However the docs say that it is only buildable on Linux using...

Hello everyone: I like to build U-Boot for the Atmel AT91RM9200 ARM9 demo board. However the docs say that it is only buildable on Linux using GNU C. I like to ask if U-Boot can be built using the Greenhills compiler using their MULTI IDE on the Windows XP platform? Has anyone gotten it to work using the Greenhills compiler? Any tips is much appreciated! Thanks

It appears that the SDRAM controller built into Atmel's AT91RM9200 ARM 9 chip only supports a burst length of 1. Exactly what use is an SDRAM...

It appears that the SDRAM controller built into Atmel's AT91RM9200 ARM 9 chip only supports a burst length of 1. Exactly what use is an SDRAM burst with a length of 1? What advantage does it have over an ordinary (non-burst) SDRAM access? Ulf, are you there? -- Jack Klein Home: http://JK-Technology.Com FAQs for comp.lang.c http://www.eskimo.com/~scs/C-faq/top.html comp.lang.c++ h...

I have what appears to be an odd problem when a Lauterbach (PowerTrace or just the Debugger) is connected to my target board an...

I have what appears to be an odd problem when a Lauterbach (PowerTrace or just the Debugger) is connected to my target board an AT91RM9200-EK. Without the Lauterbach connected on power up UBOOT runs and I can then TFTP an image into RAM. With the Lauterbach connected on power UBOOT runs but when I try and TFTP, UBOOT reports PHY is not connected!! MAC: Error during MII initialization...

Hello, I have a board with AT91RM9200 SoC. I am trying to write a test to use Micro SD card on this board. I am using MCI interface to use...

Hello, I have a board with AT91RM9200 SoC. I am trying to write a test to use Micro SD card on this board. I am using MCI interface to use Micro SD card. The initialization commands are working correctly for the Micro SD card. I get all the parameters back after the initialization commands. But the read/write operation are not working for the card. I am using polling method to wait fo...

Hi, Im working with the AT91RM9200. I am confused about the distinction between the Advanced Peripheral Bus and the Advanced System...

Hi, Im working with the AT91RM9200. I am confused about the distinction between the Advanced Peripheral Bus and the Advanced System Bus..what are they used for? Someone kindly elaborate Thanx Mayank

Hi all! I've gotten my board to boot! Thank you to all who have responded and helped me before. I have a USB key hooked to the host port, and I...

Hi all! I've gotten my board to boot! Thank you to all who have responded and helped me before. I have a USB key hooked to the host port, and I can see the USB driver detects it.. but oddly enough it seems to try and add it a couple of times... which is perhaps breaking it? and is /dev/sda the correct entry for root= when booting from a USB key? Thank you for any help! Linux version 2.6.14 (r...

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 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 over looking that is still trying to map the caches with 32MB of ram (which the dk has) but I ha...

Hi, I'm going to fire-up my RM9200 board. I see that CPU is sending letter (but not XModem "CCCCC") on DBG-UART. The problem is that CPU is...

Hi, I'm going to fire-up my RM9200 board. I see that CPU is sending letter (but not XModem "CCCCC") on DBG-UART. The problem is that CPU is doing it to fast - one bit of that char tooks about 4,56us - I'm thinking that something wrong is with PLL. Can somebody be so kind and measure for me the amplitude on 18,432MHz crystal pins and the voltage on PLL-RCA and PLL-RCB pins ? thanks a lo...

Hi. I have problem with transmission between ARM and MMC/SD on my board. I tested with 16MB SD from Panasonic and 256MB Kingston MMC. Here is...

Hi. I have problem with transmission between ARM and MMC/SD on my board. I tested with 16MB SD from Panasonic and 256MB Kingston MMC. Here is my board http://twarm.pelos.pl/viewtopic.php?t=2 I use kernel 2.6.19 with patches from maxim.org.za The connections are: MMC CPU 8 -> PB3 7 -> PA29 6 -> GND 5 -> PA27 4 -> +3v3 3 -> GND 2 -> PA28 1 -> PB5 9 -> PB4 I added pullup (1

Hi All, I have a few questions on implementation: P.S. I have read the manual closely. 1. How does the real time clock keep time during power...

Hi All, I have a few questions on implementation: P.S. I have read the manual closely. 1. How does the real time clock keep time during power cycles ? 2.I want to run my code in flash, i think these days it is fast enough, know it is only 16 bit and must use thumb mode on compiler. What othe problems will i not like ? 3. My RAM memory will be SRAM which again is only 16 bit and must b ba...

Hi there Sorry for this NewBe question, I?m try o get started in using Atmel AT91RM9200 Board. I've read a lots of how-to and so on. Now...

Hi there Sorry for this NewBe question, I?m try o get started in using Atmel AT91RM9200 Board. I've read a lots of how-to and so on. Now running a 2.6 Kernel on it :) I'd like to use a USB video board on it so i think i have to cross compile this driver. My problem i doesn?t find any example through the internet which told me how to do this. Maybe someone could give me some tips. ...

Hi, I am using an Atmel AT91RM9200 (ARM9) processor which has a single MAC built-in. I also have software drivers which support Ethernet...

Hi, I am using an Atmel AT91RM9200 (ARM9) processor which has a single MAC built-in. I also have software drivers which support Ethernet through this MAC. I have a reference design which uses the RMII interface to a PHY chip (Davicom DM9161). So far so good. However, I want to be able to change the reference design so that I can simultaneously attach two 10/100Base-T devices to this sing...