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Tuesday, 15 July 2014 - 17:49
Major bug found in XMEGA waveform generation
This behavior is also present in mega avr timers in another form. From mega32 datasheet: Quote:If the OCR1x is set equal to BOTTOM (0x0000) the output will be a narrow spike for...
Sunday, 29 June 2014 - 14:47
Verification failure after vibration tests
One of the possible reasons for XMEGA programming failure is a noisy power supply. Maybe vibration causes damage to electrolytic or tantalum parallel capacitors and makes power...
Sunday, 29 June 2014 - 05:40
Major bug found in XMEGA waveform generation
After 3 years, I tested AU series and the problem is still present. When PER and CCx are equal in SS pwm mode, moving from BOTTOM to BOTTOM+1 makes pwm output high for one cycle....
Saturday, 28 June 2014 - 17:41
Problem with XMEGA - clock setting to internal 32Mhz.
Add the following lines to your code and see the actual clock frequency on PC7 by oscilloscope: PORTC_DIRSET=PIN7_bm; PORTCFG_CLKEVOUT=PORTCFG_CLKOUT_PC7_gc;
Thursday, 15 May 2014 - 20:06
AWEX in Pattern Generator Mode [HELP!]
As described in errata section of A1U datasheet: Quote:Configuration of PGM and CWCM is not as described in XMEGA AU Manual For using common waveform channel mode and pattern...
Wednesday, 14 May 2014 - 16:28
H/L register read/write order
From Manual: Quote:For a write operation, the low byte of the 16-bit register must be written before the high byte. Quote:For a read operation, the low byte of the 16-bit register...
Sunday, 30 March 2014 - 06:33
edge interrupt acting like level interrupt [solved]
I have used port interrupts in rising and falling edge modes and there is no need for clearing the flags in interrupt routines. Also this is the atmel sample code (AVR1313) for...
Wednesday, 26 March 2014 - 04:37
Starting with XMEGA
bloody-orc wrote:Max voltage for DAC is VCC VDACmax = VREFmax = VCC-0.6
Sunday, 2 March 2014 - 10:07
128MHz frequency on port pin
Vp-p is approximately 1.2v (200mv/div for C3).
Monday, 27 January 2014 - 05:56
128MHz frequency on port pin
electronic.designer wrote:Also It is interesting to try building an FM transmitter by changing oscillator calibration bytes. I did it, it works. By connecting the amplified signal...
Saturday, 25 January 2014 - 09:40
128MHz frequency on port pin
Good news from Atmel: Quote:I've mounted ATXmega64A3U device in STK600 and I've taken out 128MHz clock from PD7 pin. Please find the attached snapshot and the code used.
Friday, 27 December 2013 - 13:02