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Discussion Title Created date
base conversion - a little more complex
Hi, This is certainly not AVRGCC exclusive, but has a lot to do with the limitations of AVR GCC and of the ATMega328P I want to run this on. Here's the deal: I want to do a base...
Thursday, 18 April 2013 - 15:37
Decoupling Capacitors
Hi, I have a question on Decoupling capacitors. I get that I need them, and I even get that I might need a high capacity one and a lower capacity one, since the larger one...
Tuesday, 18 October 2011 - 16:28
Reverse Polarity Invariance (rectification?)
Hi I'm trying to design a circuit involving an Atmega328p. It's supposed to be compatible with Lego 9V Electric connections. The polarity of these can be easily reversed, and the...
Monday, 23 May 2011 - 15:27
EEMEM and 2D arrays
OK, quick question: I'm trying to save a few mac-addresses in eeprom, so that they survive powerdown. in my code I have a 2D array for storing ten adresses of 6 bytes each:...
Friday, 28 August 2009 - 23:38
boot_page_fill() problem with odd addresses
Hi I've just run into a serious problem with my bootloader, and I can imagine many other bootloaders out there will have the same problem, but noone has noticed. it seems that...
Wednesday, 19 August 2009 - 17:28
function pointers
Sorry to ask such "basic" question here, but I need to be sure about this one. I'm changing parts of my software to use function pointers in my uart output functions, and I...
Thursday, 13 August 2009 - 20:57
Reading the "third" state from a tristate input pi
Hi guys, I'm reading a pin from an external device. in one mode the pin is pulled high by the device, in another low. but in yet another mode, it is tristated/disconnected by the...
Thursday, 30 July 2009 - 18:36
reading fuse bits from within code
Hi, I thought I saw a thread about this some time ago, but however much I search I can't find it anymore, nor any other similar thread. So: can I somehow access all the fuse bits...
Monday, 20 July 2009 - 13:15
C "call by reference" emulation using pointers
Hi I have a basic question on C. Pointers used to always confuse me, but I did get the hang of them, now that I'm working on the AVR. But I have one more question, or rather need...
Thursday, 9 July 2009 - 15:16
switch/case vs if/elseif optimization
Hi again. I'm just writing a parser for data coming in through the Uart. Initially I was going to dump everything that comes in into a buffer, and then parse that buffer, but...
Saturday, 4 July 2009 - 10:35
capacitor / backup battery question
Hi, I'm not much of an electronics guy, so forgive me for not even knowing the basics... I'm working on a project in which sometimes, my power supply is interrupted for a few...
Sunday, 28 June 2009 - 16:19
variables in fixed flash address (eg serial number)
Hi again, I have a quick question. I'm trying to place a variable in a fixed flash address, so that it can easily be altered in the hex file prior to uploading to the avr, without...
Friday, 26 June 2009 - 14:40

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