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Dragon Debugging ISRs
I'm trying to use the dragon jtag on this code just to get experience( code works ), but when I try to single-step PD4 goes high after OCR0A value's reached, even when the yellow...
Sunday, 7 November 2010 - 07:46
Finding which USB port(s) "support higher speeds"
I have 'Doze XP with SP3 and my tower supports USB 2.0. Sometimes i get the msg. "this device can operate faster..." But HOW the hell to know which of my 6 ports will do it ( I...
Monday, 1 November 2010 - 06:58
Winavr Compiler error and warning msgs
Is there a resource that gives explanations of what EVERY error / warning means ? Also, examples of how to fix each would be good. If not, there needs to be. :x
Monday, 16 August 2010 - 20:00
Version Control
When "version control" is searched for on this forum, an article by Dave Harper comes up ( it's at the bottom of the page. Has anybody used it ( I know about other open source VCs...
Monday, 16 August 2010 - 19:38
FATFS multiple drives
I have version 7e and it's supposed to support multiple drives, but i don't know how to do it. If i call disk_intialize(param.); this function checks if param > 0 and if so,...
Wednesday, 4 August 2010 - 22:25
Production level programmer
I designed a circuit for a client using a tiny2313 ( MLF ) and now he's wondering if there's a programmer that can program 10 - 20 ( or more ) MCUs at at time. Does anybody know...
Monday, 26 July 2010 - 21:19
Handling call-used registers
A general question: Using Winavr it's the CALLER's responsibility to save / restore these registers. Then would it look something like this: . . . void main ( void ){ . . ....
Tuesday, 15 June 2010 - 05:33
Static inlining
general questions: Tools -- xmega16A4, 2) & B) ( Sign. below ). 1) I read the tut. on minimizing functions and tried static inline on my init_spiC(), defined in vs1011.c and...
Saturday, 22 May 2010 - 21:55
Huge app. code reduction using options
I found this one - two punch in the forum and tried it on my MP3 player using an xmega16a4 and FATFS ( ver 7e ) LDFLAGS += -Wl,--relax LDFLAGS += -Wl,--gc-sections CFLAGS...
Tuesday, 11 May 2010 - 06:15
SREG and ISR
I have WinAvr 20090313 and I always thought the compiler took care of preserving SREG during an ISR, as it does reti. But I started looking at some past *.lss files and... it...
Thursday, 6 May 2010 - 17:47
Cycle stealing Xmega DMA Effective ?
For xmegas that have DMA, I don't get HOW it's faster / advantageous since it's cycle-stealing and doesn't have its own data bus. Why not just use the CPU ( since it can't be used...
Sunday, 2 May 2010 - 02:29
PWM on OC0
I have WinAvr 20090303 and PN and ISP MKII thru studio. 1) I'm looking at m644A d.sht. pg 101 and I guess the figure shows TOP = 0xFF ( it doesn't say). I don't get how one can...
Monday, 26 April 2010 - 07:12

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