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EEPROM write/power loss/startup/reset etc
Too many design options, the cat understands electronics slightly more than the wife, so time to turn to the forum :P I need to write 10 bytes to eeprom on power loss (user turns...
Wednesday, 26 July 2006 - 17:46
Crystal and 2 caps, or external oscillator?
What are the pros and cons of using/choosing these two options: - standard 16.000Mhz crystal and 2 off 22pf capacitors - a 16.000 Mhz '8-pin DIL' (which always puzzles me as only...
Monday, 24 July 2006 - 09:17
MCUCSR at reset - ATMega16
The first line of code in my ASM app after the JMP RESET_HANDLER at program location zero grabs MCUCSR and stores it in a SRAM variable. I'm consistently seeing 0x47 being stored...
Thursday, 18 May 2006 - 18:21
ATmega16/ATMega32 (ASM) plug'n'play
I am developing for a ATMega32 target, but don't have any of them at the moment, so am using ATMega16. I'd like the code to be invariant of the target at this stage (ie when flash...
Friday, 14 April 2006 - 08:44
Interrupt-driven EEPROM writing...
Trying to get my head round interrupt driven EEPROM writing on a Mega16. AVR104 says... In the interrupt driven approach, there is no need to poll the EEWE status bit to verify...
Monday, 3 April 2006 - 13:48
Parallax Propeller (tm)...
Done a quick search and can't find that it has been discussed here before Looks very intriguing... http://www.parallax.com/propeller/index.asp ..worth reading the Nuts and Volts...
Monday, 3 April 2006 - 13:32
Inconsistent runtime behaviour
The code at the end runs fine (it doesn't really matter what it does, but some forum members might spot some of the style :) ) (Don't know why the layout is awful - it's OK in...
Thursday, 9 March 2006 - 20:07
Mixing C with ASM Assembler
Sort of related to another current topic.... I have an ASM realtime application that I want to extend to use bilinear interpolation (http://en.wikipedia.org/wiki/Bil...) which...
Thursday, 2 March 2006 - 10:10
ISP Freq. error on STK500 - unusual one though...
Doing a lot of development/test cycles with my STK500 and a ATMega16. About 1 in 3 times on loading the .hex I get an ISP frequency error. Once I've got it, a repeat attempt...
Thursday, 23 February 2006 - 08:30
Using registers with ASM
Simple Q I suspect, but when you don't know the answer... All the example code I ever see uses r16 onwards and so in my apps I do the same. Why not use r0-r15? Either in example...
Sunday, 19 February 2006 - 12:42
Reference bootloaders
Are there any reference bootloaders that are complete (ie AVR code plus a simple user front end) can be taken and used as-is with no mods required...? ...all with source code (...
Tuesday, 24 January 2006 - 15:59
Using a brand new ATmega8515
My code and external circuitry are working great using the 8515 embedded in in the STK500. So I built a cut down version of my target circuitry (AVR, external crystal, 2x 22pF...
Monday, 9 January 2006 - 11:27

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