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samd21 pwm with waveform output 1 instead of 0
I am using a samd21g18a and I have the following working pwm: PORT->Group[0].DIRSET.reg = PORT_PA04; PORT->Group[0].OUTCLR.reg = PORT_PA04; PORT->Group[0].PINCFG[4]....
Friday, 14 April 2017 - 03:21
xmega256a3u RTC divide external oscillator by 32 cold issue
We have a design that uses the xmega256a3u and a 32.768 kHz external oscillator.  What we have noticed is that on about 10% of the chips if you use the RTC divide by 32 to...
Monday, 13 February 2017 - 19:01
SAMD21 TC sync fixes short sleep?
I am using SAMD21g18a with FreeRTOS in tickless mode.  After much assistance (https://community.atmel.com/forum/samd21-timercounter-callback-jitter-when-reading-multiple-tc-...
Friday, 6 January 2017 - 15:14
SAMD21 Timer/Counter Callback jitter when reading multiple TC values
I am using a samd21g18a and I am seeing incorrect callback times for TC4/5 (32 bit counter) when I setup another timer (say TC3) and I read the value from that timer before...
Wednesday, 14 December 2016 - 18:12
Sleep delay necessary for SAMD21 debug print
I have a samd21g18a setup using ASF and freeRTOS.  I have implemented tickless mode and it works great so far.  I have added a check for debug print (modified version of...
Tuesday, 15 November 2016 - 21:39
TC5 already used in ASF/FreeRTOS samd21g18a?
I have a samd21g18a running standalone ASF (not using studio) with FreeRTOS 8.2.3.  I am implementing the tickless feature by changing the system tick as shown:   void...
Tuesday, 18 October 2016 - 22:28
Seconds Clock using RTC Compare
I am using an xmega256a3u with the RTC running off an external oscillator with one second being equivalent to 1024 counts (so the RTC rolls after 64 seconds).  I would like...
Thursday, 2 June 2016 - 16:32
Boot/jump table access on xmega256a3u
Hello,   I have created a bootloader for use with the xmega256a3u and everything is working.  One of the functions in my jump table passes me an 8 byte git version of my...
Thursday, 29 October 2015 - 21:53
Run identical code in application section from non 0 location
I would like to have two copies of my firmware in my application section so that I could jump from the bootloader to either firmware.   I have an xmega256a3u and I have a...
Wednesday, 30 September 2015 - 00:06
Safe to assume that EEPROM/FLASH programming is stable for XMEGA U?
Have been using the EEPROM fix (AVR1008) for xmega256a3 for several years and are now switching to the xmega256a3u.  Is it safe to assume that I can remove the fix from my...
Wednesday, 16 September 2015 - 17:39
Any way to write flash from the flash application sector?
I have an xmega256a3u that I am connecting to the outside world via a bluetooth low energy chip (BLUENRG-MS).  I would like to use the bluetooth interface to update my...
Tuesday, 15 September 2015 - 23:59
ATXMEGA256A3U ADC Calibration Values have no effect?
  I am using the ADC on the ATXMEGA256A3U and it works great (much better than the ATXMEGA256A3).  I am putting the calibration signature into the calibration values as...
Wednesday, 18 February 2015 - 19:04

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