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CRT defl ref design links?
Now that CRTs are legacy systems, we get a contract to make a 3" round CRT gizmo. I've looked at discovercircuits and epanorama quite a bit, but I'm hoping someone might have a...
Monday, 21 July 2008 - 13:26
how to get the array of addresses into flash?
#define NUMSTR 4 #define MAXSTR (NUMSTR-1) __flash char str0[]={"PEAK"}; __flash char str1[]={"NORM"}; __flash char str2[]={"DEGC"}; __flash char str3[]={"DEGF"}; __flash char...
Wednesday, 2 July 2008 - 19:07
eeprom width?
I have a prob writing a bunch of ints and chars to eeprom I think. Is the eeprom byte wide or word wide? I declare an int then a bunch of bytes in eeprom, and declare the same '...
Wednesday, 2 July 2008 - 18:49
pin compatible 40 pin dips?
I know the 8515 or something's claim to fame was that he could plug into an 8051 socket... I'm wondering if there are any 16mhz 40 pin AVRs that might run in a mega32 socket... I...
Tuesday, 13 May 2008 - 05:27
Test for a 'worn out' AVR?
I think I've worn out the flash rom in my mega32. Too many erase/burn cycles I guess. Its an lpt programmer, but bear with me. I hit erase, then I hit blank check, and it says its...
Sunday, 11 May 2008 - 17:04
read a/d not atomic?
If I'm reading the a/d by polling and a timer interrupt hits right in between the reading of ADCL and ADCH, but nothing in the timer interrupt handler fiddles with the a/d,...
Wednesday, 7 May 2008 - 17:58
mega32 io diagnostic?
Lets collaborate on a test program for mega32s. Algo is: for each port x write 55 and AA to the PORTx and read back PORTx... verifies outputs change. To test inputs, write 55 and...
Wednesday, 7 May 2008 - 17:37
Mega32 int0 'arms itself'?
Trying to debug a program that keeps blowing up. I wrote a small handler for EVERY interrupt. They just print out something like 'uart rx' and hang up in a while(1). Imagine my...
Wednesday, 7 May 2008 - 04:24
Address of MCUSR in mega1280?
Trying to read the brownout bit in the MCUSR in a mega1280. Datasheet says its at 0x54, iom1280v.h for my compiler says its at 0x55. Will someone look in the gcc includes and see...
Wednesday, 9 April 2008 - 02:11
simple co-tasks in c?
Lets say I have three while loops with a sleeplike this... void cotask1(void){ printf("cotask1\n"); sleep1(100); } void cotask2(void){ printf("cotask2\n"); sleep2(200...
Sunday, 30 March 2008 - 19:36
New imagecraft avr compiler version 7.17 has xmega support
Just read the press release from Imagecraft... new compiler version has a checkbox to turn on 64 bit double floating point calcs (useful for GPS location calcs and some other...
Saturday, 29 March 2008 - 17:58
AVR vs Rabbit comparison
I've been doing a rabbit project, so I ram a couple of benchmarks I have on my 16mhz mega32 and my 58mhz Rabbit 4200... AVR does 50000 dhrystones in 8 sec.. about 6250 dhrystones...
Wednesday, 26 March 2008 - 01:23

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