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avr-gcc 4.7...
Is this still the recommended combination of gcc/binutils/avr-libc for people wanting to experiment with avr-gcc 4.7 ? Quote: avr-gcc-4.7.0 (C/C++) SVN 182625 with the patches...
Wednesday, 8 February 2012 - 04:56
C++ register usage for "this"...
Is there any way to hint to g++ that it should use Y or Z for the "this"? It seems to insist on using X, which lack indexing ability, so you wind up with code like the following...
Saturday, 7 January 2012 - 20:36
binutils that process gdb/debug info ?
Are there any gcc binutils that process the debug sections of an elf file in a meaningful fashion? I particular, I'd like: 1) symbol/size info (like "nm -S") that includes the...
Thursday, 8 December 2011 - 08:02
Makefiles, windows pathnames, cmd.exe vs sh.exe
I am trying to create a makefile that will work on windows regardless of whether you have WINAVR installed with its bin directory in your PATH. (WINAVR is present, but not "set...
Tuesday, 4 October 2011 - 16:23
cpu-independent binaries...
Does anyone have experience in writing (with gcc) programs that can run on several different CPUs (making any necessary decisions at run-time rather than at compile time.) It...
Thursday, 7 July 2011 - 04:50
Serial bootloader protocols
I've been working on the Arduino serial bootloader, and one of the things that has struck me is that all the serial bootloaders I'm aware of use a serial "protocol" that was...
Wednesday, 15 June 2011 - 00:15
Bootloaders, NRWW memory, and perihperals...
I have bootloader issues writing NRWW memory pages. The datasheet says "when writing to the NRWW section of memory the CPU is halted." OK; my initial interpretation of that would...
Saturday, 23 October 2010 - 21:33
Bad optimization for 4-bit shift, g++ only ??
Is there something I'm not understanding about C++ ? I have a trivial program: extern void foo(unsigned char c); extern void bar(int c); extern unsigned char c; int main...
Saturday, 9 October 2010 - 09:43
Programmably readable signature bytes in ATmegaXX8 ?
So on which ATmegaxx8 variants (A, P, PA, null) is it possible for a program (on the chip itself) to read the chip's signature bytes? This is in the xxxP datasheet, where it says...
Thursday, 7 October 2010 - 03:25
Inappropriate "optimization" of loop to division
I have AVR code: static unsigned char timer0_fract; void foo (void) { unsigned char fractmp = timer0_fract; fractmp += 3; while (fractmp >= (unsigned char)125) {...
Monday, 27 April 2009 - 08:27
g++ specific bug with prog_uchar in 4.3.0 ?
Is there a known bug in g++ 4.3.0 with respect to atributes that are a part of a typedef or something? I have this trivial program pgmspace.c: BillW-MacOSX cat pgmspace.c #...
Monday, 1 December 2008 - 07:32
Instruction Set Summary, with limitations ?
Has anybody written up a copy of the AVR instruction set that makes the limitations more obvious? I mean, which instructions are good for all 32 register vs which are good for...
Tuesday, 4 September 2007 - 07:28

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