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XMEGA A1 the dreaded VCC GND pair swap
As some of you may have also learned the hard way, I managed to produce a board where VCC goes to pin 83 and GND goes to pin 84. (VCC pins are 3, 13, 23, 33, 43, 53, 63, 73, ...
Thursday, 19 March 2015 - 09:40
bootloader and program sharing eeprom variable
most of my eeprom variables are defined normally, but i need a byte that the bootloader reads. And of course, this can't be automatically placed by the compiler. Can I declare an...
Friday, 9 March 2012 - 10:53
Programming tool details in project files
We are a couple of people developing on the same project. Every time any of us update changes from subversion, i get a conflicted .cproj file because info about the JTAGICE tools...
Thursday, 1 March 2012 - 11:12
data breakpoints?
Forgive me if this has been asked before, but search isn't working for me at the moment. How do I make data breakpoints in avr studio 5? I'm currently using a JTAGICE mkII.
Monday, 13 February 2012 - 12:14
Stack trace when debugging?
Is this possible? I've spent most of a day debugging a problem that a stack trace would have fixed in minutes. I'm using an xmega chip with a jtagice2.
Tuesday, 18 October 2011 - 19:44
Problems using RTC
I have an xmega192A3 with a 32.768kHz crystal on the TOSC pins. All i'm trying to do is get a 1Hz overflow interrupt. My code: // real time clock configuration...
Thursday, 11 August 2011 - 12:11
Adding register structs to watch
I am debugging my xmega project, and I tried pasting OSC register into the watch. It comes out with a parse error. if i do *(unsigned char *) 0x0050, that works, but using the...
Friday, 5 August 2011 - 10:25
Signal/chassis ground
Hi, I'm making a pcb with GPS and GSM modules. I've found a nice series of extruded aluminum casings that I have designed my pcb to fit in. I need to have the two antenna...
Monday, 9 August 2010 - 16:54
Charge battery from solar panel
I've got some 10W solar panels with a Voc of 21.5V and i wish to charge a 6V12Ah lead acid battery. I've looked at a load of battery charge ICs, but these all use a voltage source...
Tuesday, 1 June 2010 - 15:21
low side current sense using xmega?
I need to measure the current used by my board. Connecting a small resistor in series with ground, can I use the xmega ADC to measure that? In other words, can the xmega ADC...
Tuesday, 11 May 2010 - 14:27
RS485 connectors and cabling
Hi, Progress on my modular led display is going nicely. The modules will be placed in a grid of up to 4 by 16. Each module is fitted with a dual rs485/rs232 transceiver, so that a...
Wednesday, 22 July 2009 - 09:28
Connecting 5x6 grid of PCBs using rs485
As per topic, i'm pondering how to do this in the best way. Each PCB is supplied in a star topology from a single point, but each also needs a separate logic supply. Should I use...
Tuesday, 7 April 2009 - 15:20

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