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Discussion Title Created date
Several virtual com ports with one USB
Is this possible using e.g. xmega128a4u? I would like to get 4-6 com ports at 9600 baud or maybe 19200.
Saturday, 31 January 2015 - 12:14
Verification failure after vibration tests
We did vibration tests to a product, which has xmega64d4. It survived the test even though there was huge accelerations at one point bending cable connectors on the PCB. There was...
Thursday, 26 June 2014 - 11:41
Debugging problem
I have been trying to find out what is happening in my code. After a quite simple modification it totally stopped working. Now I found a very small change, which makes it...
Wednesday, 12 March 2014 - 16:32
QTouchADC and xmega
There is no QTouchADC library for any AVR except a few Tiny. Why is that? Don't they have necassary features? I have been playing around with Xmega32A4 ADC and very simple...
Saturday, 8 March 2014 - 14:22
PLL not working at 2 x RC2M
Why isn't the following working with xmega32a4: OSC.CTRL |= OSC_RC2MEN_bm | OSC_RC32KEN_bm; while((OSC.STATUS...
Tuesday, 22 October 2013 - 10:43
Internal 32.768 kHz clock DFLL accuracy
I plan to use DFLL from internal 32.768 kHz clock with xmega64d4. According to its datasheet typical charasteristics it is very accurate, spot on 5-85 C and -0,5% at -35 C. I...
Monday, 21 October 2013 - 08:07
xboot + avrdude problems
I'm testing this configuration on my old xmega32a4 while wating for new PCB for xmega64d4. I'm able to program the bootloader and the application using srec_cat, jtagice3 and AS6....
Saturday, 19 October 2013 - 13:21
Bootloader for UART + Linux
Which bootloader should I use for xmegad4 to be updated via UART using a Linux PC command line tool? Is there one ready to be used in commercial applications or do I need to make...
Tuesday, 1 October 2013 - 10:41
A4U vs. D4
Is there a document that lists all the differences of these two? It is quite hard work to compare the datasheets. I know D4 doesn't have as many SPI/UART, no USB, DMA nor crypto...
Wednesday, 18 September 2013 - 16:29
Which toolchain?
I have been using WinAvr + Atmel Studio 5 just for programming with an AVRISP clone with XMega32A4. I prefer to use a text editor (emacs), make my own Makefiles and run make from...
Friday, 19 April 2013 - 12:32
Noise on an external 24bit ADC
I have a system, which has a XMega32A4, a Linear LTC2492 24 bit ADC and three UARTs using RS-232 converters. The system is powered from 12 V through a 5 V linear regulator which...
Wednesday, 3 April 2013 - 09:54
XMEGA32A4 ADC MUXNEG and accuracy
I know there are a lot of issues with the ADC of non-U models, but I have a system that works OK and I just need to add an ADC for measuring solar panel voltage (range 10-25 V)....
Monday, 18 March 2013 - 15:27

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