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Discussion Title Created date
JTAG vs. USB
I'm trying to debug code on a USBKey. If I rerun using gdb and avarice, I get one result. If I rerun by pushing the reset button, I get another, slightly more verbose, response....
Mon. Sep 27, 2010 - 05:44 PM
Don't know how to run.
avr-gdb wrote: Don't know how to run. How, if at all, does one do a restart with avr-gdb and avarice? continue is obviously the wrong answer, but for some reason is needed at the...
Wed. Sep 22, 2010 - 09:58 PM
why line-continuation [now = merits of stdio/printf/etc]
Outside of preprocessor directives, can anyone think of a reason to use line-continuation in C? I just helped diagnose a problem cause by a stray backslash at the end of a comment.
Mon. Sep 20, 2010 - 04:07 PM
SS vs. SPIF
What is supposed to happen if the master aborts the transfer of a byte by deselecting the slave? In particular, should the SPIF bit of SPSR be set? The slave is an ATmega168. I...
Sat. Sep 11, 2010 - 07:49 PM
how do I point AVR studio at a JTAGICE mkII?
I don't use the debugging tools much. My problems seem to always occur inside time-sensitive code. Occasionally, e.g. now, something hangs and I'd like to figure out where. The...
Fri. Aug 27, 2010 - 05:37 PM
Wizbang?
Is Wizbang Designs deceased? I might want some more dragonfly wings in the near future. Though bluegoo is still among us, the last post with a Wizbang signature was over a year...
Tue. Jul 13, 2010 - 08:55 PM
reading fuses
Does winAVR include a function or macro for reading fuse bytes? I can roll my own if I have to.
Fri. Jul 9, 2010 - 11:31 PM
700 ohms: continuity checking a USBKey
While testing the Wizbang wings for shorts, I noticed one-way resistances (about 700 ohms) between port pins and Vcc or ground. Resistances between port pins are high in both...
Fri. Jul 2, 2010 - 05:56 PM
EIFR vs. EIMSK in an AT90USB1287
Does a zero in EIMSK preclude the corresponding bit in EIFR becoming one? Reading the datasheet leaves me unsure. I'm trying to check whether a pin has been pulsed. The processor...
Fri. Apr 16, 2010 - 09:32 PM
replacing interrupt vector table
What is necessary to replace the interrupt vector table? Can it be done without also providing one's own start-up code? Would providing a right-sized .vectors section do the trick?
Wed. Feb 24, 2010 - 05:42 PM
avr-objdump: Z became Z+
After assembling LPM R12, Z the resulting .lss file contained the following line: 80: c4 90 LPM r12, Z+ The object code is correct, so I infer the problem is in...
Tue. Jan 12, 2010 - 06:05 PM
What expression?
avr-as tells me: Error: non-constant expression in ".if" statement Is there an incantation that will tell me what avr-as thinks the expression was? It's buried inside a somewhat...
Tue. Jan 12, 2010 - 12:23 AM

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