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XMEGA Clock not syncing to USB SOF
Hi guys. I seem to have run into a slightly complex clock-related problem on the XMEGA. I'll try and explain the best I can below.   I have set up the internal 32MHz...
Wed. Dec 28, 2016 - 03:37 AM
Editing the XMEGA-U DFU Bootloader (Alternate title: anyone got the old AVR1916.zip file?)
I found a pretty hilarious error with a board I've been developing recently. There is a particular transistor that, normally, operates with a low duty cycle  However, when...
Thu. Sep 29, 2016 - 04:57 AM
XMEGA ADC: no DC offset at at 750ksps, but almost 500mV at 1.5Msps!
As the title says, having the strangest issue with the ADC on my XMEGA32A4U.   I have three channels and am trying to measure them all simultaneously using a sweep. When I...
Fri. Feb 26, 2016 - 05:47 AM
Cannot access ADC RESH register on AVR XMEGA (but can access RESL!?!?)
Having the strangest issue ever right now (ATXMEGA32A4U). So, I've set up the ADC in 12-bit left-adjust mode.  It free runs and takes samples at regular intervals, which are...
Mon. Nov 30, 2015 - 07:27 AM
How do I see what variables are using up the RAM in my AVR?
So, I just hit the compile button in Atmel Studio, got an error and went to see what it was.   It was a memory overflow in the data section!  I was using 4200 bytes of...
Tue. Sep 22, 2015 - 06:16 AM
XMEGA USART in Master SPI Mode Throwing up RxC / TxC flags BEFORE transmitting/receiving data
Okay, so I've been grappling with this issue for almost half a day.  Just cannot figure it out.   Firstly, I call the following code to set up the USART as a Master SPI...
Fri. Sep 4, 2015 - 01:16 AM
Cannot Change Board Used by ASF!
Hello forum! I have spent the last 3 or 4 months working on a project using the XMEGA-A3BU Xplained board, and have now reached the stage where I'm ready to move it across to a...
Tue. Jul 21, 2015 - 04:11 AM
ASF USB Vendor - 7 or 8 ms delay when processing first iso packet.
Hi there.     I'm using the ASF USB vendor library along with USBpcap (software packet sniffer) to view some data being streamed between by PC and XMEGA device. The...
Mon. Jun 15, 2015 - 07:11 AM
SRAM on ATXMEGA16A4U - 2KB or 3.3?
Just a question regarding the ATXMEGA16A4U. According to the "parameters" tab on the official page, the 16A4U has 3.3kB of SRAM.   However, according to the datasheet,...
Sat. May 23, 2015 - 01:11 AM
Cannot run LUFA functions and ASF funtions at the same time?
Hi there!  Firstly, apologies for the noob post.  I'm quite a young guy and have only been using the XMEGA architecture for about a week.   Anyway, as the title...
Sat. Apr 11, 2015 - 02:43 AM