Hi all, In ARM926EJ-S Architecture, If I am not using nested interrupts, do I need to perform a write to IVR register? > From the...

Hi all, In ARM926EJ-S Architecture, If I am not using nested interrupts, do I need to perform a write to IVR register? > From the beginning, I started with the interrupt handling atmel provided and did not question it, just understand what it does. But now, out of curiosity, I tried not doing it (write to IVR) and it works.. Why would one need it really? In the manual it says "This (Pr

I'm having some trouble programming the AT91SAM9261, and I'm hoping someone out there can point me in the right direction. I'm using the...

I'm having some trouble programming the AT91SAM9261, and I'm hoping someone out there can point me in the right direction. I'm using the latest yagarto tool chain to program the AT91SAM9261. I'm connecting to the chip using the Atmel SAM-ICE JTAG via USB. I have tried to follow the sometimes conflicting setup info in the documents "Using Open Source Tools for AT91SAM7S Cross Development ...

I have some problems with the software reset on an Atmel at91sam7s256 Controller, in principle it should work but if I change things that have...

I have some problems with the software reset on an Atmel at91sam7s256 Controller, in principle it should work but if I change things that have absolutely no visible connection to the reset controller it stops working. To be more exact either it starts normal and works after a reset or it stops working after a view lines of main and the whole controller hangs. An example I have a configuration...

Hi, I'm wondering, if it's possible to implement more than one TWI interface? Can I use predefined registers? Can I control more then one...

Hi, I'm wondering, if it's possible to implement more than one TWI interface? Can I use predefined registers? Can I control more then one peripheral at once? ------------------------------------

Hi, I`m working with the AT91SAM9260 controller and I try to download some code by the jtag interface to the external NOR flash (connected...

Hi, I`m working with the AT91SAM9260 controller and I try to download some code by the jtag interface to the external NOR flash (connected at NCS0). When I power up the board the controller tries to read out a valid sequence from the nor flash (NCS0 is low, NWE0 is high and NRD is low (similar to a clock signal)). Therefore I think the bootloader / controller is working there should ...

I have been thinking of designing an AT91SAM9261 based board, it will have NAND flash as storage and SDRAM as memory. It will also have an lcd and...

I have been thinking of designing an AT91SAM9261 based board, it will have NAND flash as storage and SDRAM as memory. It will also have an lcd and will be running linux. Im only a hobbyist so and im not sure if i can do the BGA reflowing, practice makes perfect. Anyways, my first question is that would i be able to run an 4.2" 420x272 TFT LCD without too much of performance hit? Second, ...

I have a strange interrupt behaviour. First a bit explanation of my set up and expected behaviour: Communication between controllers: - RS485...

I have a strange interrupt behaviour. First a bit explanation of my set up and expected behaviour: Communication between controllers: - RS485 Bus - input/output control lines The RS485 master drives the input lines of the slaves, the inputs generate a PIO IRQ of the slaves. Slave controllers: - Watchdog enabled, counter set to ca. 3s - Watchdog resets at PIO interrupt on designate...

Last post here on this, because there might be a few interested bods out there. [Any more and we'll go off-list... promise!] > I have been...

Last post here on this, because there might be a few interested bods out there. [Any more and we'll go off-list... promise!] > I have been trying to familiarise myself better with YAFFS (I have at times > pondered about contacting you privately), but I must volunteer I haven't > quite got the full grasp on it yet that I would like :-) Send me an email address and I'll send you a 20 page do

Hi all, Our new product has the same dataflash connected to the same pins of AT91SAM9RL64 as in Eval-Board. How can I load my boot code to...

Hi all, Our new product has the same dataflash connected to the same pins of AT91SAM9RL64 as in Eval-Board. How can I load my boot code to the dataflash? Is there a way of telling samba.exe that it should not initialize the external sdram (which he is trying and not finding)? Any help would be greatly appreciated.. Regards, Bekir

Hi! Im a newbie in ARM7, and I have a problem when i use UART on AT91SAM7X256 uC in CrossWorks 1.7 (my board is an Olimex SAM-EX256). I can...

Hi! Im a newbie in ARM7, and I have a problem when i use UART on AT91SAM7X256 uC in CrossWorks 1.7 (my board is an Olimex SAM-EX256). I can send characters to the PC and it works fine, but if i want to send a string the program is stuck in dabort_handler in AT91SAM7_Startup.s. This is my function for sending stings: int uart0_puts ( char* s ) { while ( *s ) uart0_putchar( *s...