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Discussion Title Created date
Problem with a SEPIC Switching Regulator Circuit
I am having a new problem with a previously designed SEPIC switching regulator circuit that comletely perplexes me. I am using the Linear Technology SEPIC switching regulator...
Tue. May 18, 2010 - 06:49 PM
How to detect when an input has been unplugged?
I have an input device that is wired into an ADC on the AtMega644 that I would like to be able to detect when it has been unplugged. I have the ADC port set as an input & the...
Sat. Nov 14, 2009 - 02:25 AM
Device Recommendation
I've been using an ATMega128 for a while now & am pretty familiar with it... but have read posts where people speak of it as being pretty out-dated... Is there a newer device...
Fri. Jun 12, 2009 - 05:02 AM
Question on Program Memory
I'm using the ATMega644, which has 64k of program memory according to the datasheet. When I compile my program in AVRStudio it says: Program: 64260 bytes (98.1% Full) (.text...
Tue. Jun 2, 2009 - 07:43 AM
JTAGICE mkII with ATMega644
What is the fastest way to program an ATMega644 using the JTAGICE mkII? I have been successfully programming with JTAG interface on a custom board I've developed... but it takes...
Tue. May 12, 2009 - 02:10 AM
Memory Usage Report Only Works for Globals?
I've noticed that when I compile my code with GCC and view the memory usage report at the bottom, it only seems to reflect global variables. I can introduce a local variable:...
Sat. Nov 8, 2008 - 03:43 PM
Help with RPM Calculation
I have working code but just wanted to ask if anyone knows of a more elgant way to handle a problem I've noticed & had to write special code to handle... I'm using INT0 to...
Thu. Nov 6, 2008 - 12:48 PM
Programming Fuse/Lock Bits Messes Up Code Execution
I've noticed when I program the fuse/lockbits to not allow further read/writes, programming, etc... that my code becomes all glitchy & does not run properly. When I re-load my...
Sun. Oct 5, 2008 - 01:33 PM
JTAG Connection/Programming Problem
I've just put together a prototype board using an ATMega644 and was able to program it once with my JTAG MKII. After programming it, I was trying to connect to it to modify the...
Sun. Jul 6, 2008 - 06:41 AM
LSS Vs LST Files
Could someone explain to me what the difference is between the *.LSS files and the *.LST files generated by the compiler? I see that the *.LSS file has a lot more comments from...
Thu. Jun 12, 2008 - 05:54 AM
will a magnet erase avr's memory?
I know that holding a magnet up to a hard drive will erase all of the data on the drive... I was just curious if an AVR will lose its memory (program, eeprom, sram, etc...) in the...
Fri. May 23, 2008 - 05:26 AM
volatile structs
When you have a global struct you want to make volatile cause it's shared between main() and an ISR(), do you have to put the "volatile" keyword in front of every member variable...
Sat. May 17, 2008 - 08:43 PM

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