Hi, sorry if I post again a question about the XMEGA ADC but I need help.
I'm using an ATXMEGA256A3 REV_ID NÂ° 0001.
Someone know from what rev_id the ADC problems are resolved?
I've strange problems, if I use the ADC in single ended the errors are very big 16-20 LSB.
If I use differential mode decrease at 4-6 LSB but I've an other problem....
I set the ADC like this:
I've two trimmers one on PB4 and one on PB6.
If I set trimmer1 and trimmer2 to 0V I rea 0001(decimal) on both channels.
If I increase trimmer1 to read 0455 (decimal) or some other value, on CH0, it increase a little bit also CH1 and I read ( CH0=0455 and CH1=0015) ?
How it's possible?
Where I can read the history of the REV_ID for to know if my microcontroller have a good ADC and I'm wrong or if it has bug?