Type in the full discussion title or a part of it.
Discussion Title Created date
Noisy 32.768KHz crystal?
We have discovered that our 32.768KHz watch crystal is generating a lot of noise on our ADC measurements. We sample audio at 5KHz, and there is a big spike at around 2KHz with the...
Wed. Dec 3, 2014 - 09:10 AM
AES multiple blocks / XOR mode
Can anyone shed some light on how the XOR mode of the AES module is supposed to be used? The datasheet says that it XORs what you write to the state memory with the existing...
Wed. Nov 26, 2014 - 03:58 PM
Placing __func__ in PROGMEM
Is there any way to place __func__ in program memory? By default it is defined as "static const char" which goes in RAM. If you use it a lot it will quickly waste all your RAM on...
Wed. Nov 5, 2014 - 10:44 AM
PDI programming protocol
I'm writing some code to program one XMEGA with another, using the PDI protocol. I can talk to the target device and access it's NVM controller, but only after I observed what a...
Tue. Oct 7, 2014 - 02:26 PM
SPI slave corruption on A3U
Hi. I am using an XMEGA 256A3U as an SPI slave to read an I2S audio signal. I have the same set up running on a E5 and it works perfectly. I2S WCLK -> SS I2S BCLK -> CLK I2S DATA...
Fri. Sep 5, 2014 - 08:56 AM
XMEGA USART baud rate calculator
https://docs.google.com/spreadsh... Based on an Excel spreadsheet by an unknown author. Enter the CPU clock and desired baud rate at the top. The table will update (can take a few...
Wed. Jul 2, 2014 - 03:04 PM
nonull attribute
I'm trying to apply the "nonull" attribute to some functions but the compiler keeps giving me a "Warning 'nonull' attribute directive ignored [-Wattributes]" message. The code is...
Tue. Jun 24, 2014 - 02:27 PM
AVRISP mkII being discontinued?
Has anyone heard anything about the AVRISP mkII being discontinued? Farnell list it as "until stocks are exhausted" and RS no longer carry it at all. Is it due to be replaced or...
Wed. Jun 11, 2014 - 08:16 AM
E5 EDMA infinite repeats (ring buffer)
Is it me or has Atmel removed the ability for the E5 EDMA to do infinite repeats like the older XMEGA DMA controllers? Before you could set the repeat count to zero and it would...
Thu. May 29, 2014 - 10:52 AM
Serial number not working on USB 3.0?
I have an odd problem with an XMEGA based USB device using the ASF USB implementation. The XMEGA appears as a CDC device and works flawlessly on USB 1.1 and 2.0 ports. However,...
Tue. May 13, 2014 - 01:57 PM
Incorrect parameter passed to function
I have a really weird bug that seems to affect all optimization levels but goes away when the code is altered slightly. Target is an XMEGA128A3U. Latest Atmel Studio/GCC....
Tue. Jan 21, 2014 - 11:56 AM
PWM with TC2 issue
Hi. I am having a problem getting PWM to work reliably with TC2 (TC0 split into two 8 bit timers). about 50% of the time it works perfectly, the other 50% of the time there is no...
Tue. Dec 3, 2013 - 03:23 PM

Pages