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AT91SAM ARM
For users of the Atmel AT91SAM7 and AT91SAM9 ARM CPU chips. Atmel has taken a new direction by combining on chip flash and ram with the ARM CPU on a single die. This provides low cost devices for small systems using the ARM CPU. This group is to exchange information to help users get started and learn how to use the devices.
Help needed in AT91SAM9263 CPU Rev.A SPI/PDC issue
alipowsky - May 2 2008
We have a SPI coupled ADC and DAC on SPI0 Bus of the cpu.
We read start a PDC transfer every 50 us to write the DAC and read the
ADC values.
We now encounter problems with rea... 
FreeRTOSv5 sending from interrupts
axl_dudu - Apr 24 2008
The version 5 of the FreeRTOS comes with a new version for the
xQueueSendFromISR() function (http://www.freertos.org/a00119.html).
This new version will yeild the execution of ... AT91SAM7X security bit [11 Articles]
Nick Howes - Apr 24 2008
I need to ensure the security bit is set, so I have a check in my
startup code. However, when it executes I get a watchdog timeout -
it seems to work because subsequently it... timer interrupt aborts... [8 Articles]
v333k - Apr 23 2008
Hi everyone,
I am trying to get the timer counter interrupt code to work with
SAM7SE512 MCU I am working with.
Here is what happens:
When I run the code, I initialize everyth... Strange dataflash behavior [10 Articles]
"ICLI, Bekir (EXT)" - Apr 23 2008
Hi all,
I am trying to test my dataflash program where I write/read a couple of
bytes to/from dataflash.
But oddly enough, when I boot my code from dataflash, I can't even rea... Require some guidance on choosing colour LCD. [3 Articles]
chaitannya - Apr 22 2008
Hello Everyone,
I want to interface a colour LCD with my AT91sam7x256.
I searched for LCD vendor in my country (India) and i found that
these colour LCDs are available
h... 9263 as a TFT controller
chipburnssc - Apr 21 2008
Anyone have any experience using the AT91SAM9263 as a TFT controller,
including buffer-swap? I've never done a graphic LCD (not to mention a
TFT) and am wondering what the pit... Best MIDI Microcontroller [3 Articles]
Vuln...@gmail.com - Apr 21 2008
Hi all, I am looking for a little advice.
I am in my last semester of college, and we have to do a senior design project. Most of our experience with Micro controllers has been... PWM master clock problem [3 Articles]
birdiezong - Apr 16 2008
Hello everyone,
I have a strange problem that I would like to get some help on.
My AT91SAM7SE512 processor runs off of a 18MHz crystal and internally
boosts up the master fr... Beyond 55Mhz???
James - Apr 11 2008
Has anyone stretched the limits of what an AT91SAM7X256 can do as far
as the PLL and processor clock?
In the latest data sheet from Atmel, they clearly state that the
processo...