Search found 31 matches

by gmb42
Mon Jun 10, 2013 11:24 pm
Forum: STM32 Support
Topic: STMF3 Discovery & Motors (RC car)
Replies: 7
Views: 3466

Re: STMF3 Discovery & Motors (RC car)

I agree about the likely motor type, although an older car motor might be brushed. Either way to get sufficient power into the motor will need a power driver and I think the best bet would be a standard rc car electronic speed controller (esc). They are available for brushed or brushless, and do the...
by gmb42
Thu Feb 21, 2013 10:08 pm
Forum: General Support
Topic: Compiling duration
Replies: 36
Views: 7167

Re: Compiling duration

IMHO cmake is good for cross platform software and when you have lots of external dependencies. I'm not sure either really applies to our work with ChibiOs.

Generally I think we're OK with make for command line folks and maybe eclipse projects for those that want an IDE.
by gmb42
Sat Feb 16, 2013 1:01 pm
Forum: General Support
Topic: Compiling duration
Replies: 36
Views: 7167

Re: Compiling duration

You always need a few seconds during the compile for a few sips of your favourite beverage. If its too quick I'd dehydrate :D
by gmb42
Fri Feb 15, 2013 12:36 pm
Forum: ChibiStudio
Topic: ChibiStudio - Problem when cleaning project
Replies: 10
Views: 4408

Re: ChibiStudio - Problem when cleaning project

It's not a perception, a process will have a "lock" on a file or directory. There is a utility called Unlocker that can list and "break" the locks. If you can find out what process has the lock you may be able to prevent it doing so in the future.
by gmb42
Wed Feb 13, 2013 10:32 pm
Forum: General Support
Topic: Compiling duration
Replies: 36
Views: 7167

Re: Compiling duration

FYI timings on an i7, I primed the caches with a 'make' before these tests: $ time make make: Nothing to be done for `all'. real 3m23.188s user 0m45.067s sys 2m36.545s $ time make -r make: Nothing to be done for `all'. real 0m0.821s user 0m0.310s sys 0m0.420s $ time make -j make: Nothing to be done ...
by gmb42
Tue Feb 12, 2013 10:58 pm
Forum: General Support
Topic: Compiling duration
Replies: 36
Views: 7167

Re: Compiling duration

Windows and msys command line with a text editor. Gdb for debugging.
by gmb42
Tue Feb 12, 2013 10:42 pm
Forum: General Support
Topic: Compiling duration
Replies: 36
Views: 7167

Re: Compiling duration

On my machine using msys make for a win32 build takes an age. Passing the '-r' flag speeds it up immensely. The flag tells make to not bother with some built-in rules, I'm not sure if this affects the build in an adverse manner, but it works for me.
by gmb42
Sun Feb 10, 2013 8:38 pm
Forum: Development and Feedback
Topic: [Announcement] ChibiOS Twitter
Replies: 3
Views: 1238

Re: [Announcement] ChibiOS Twitter

Personal opinion: Why? More communication channels doesn't mean better or even more communication . IMHO it just leads to a dilution of the message. Where are newcomers to go for help, the website, the wiki, or the forums, or the separate gfx website or now twitter?
by gmb42
Sat Dec 01, 2012 10:08 pm
Forum: General Support
Topic: Floating point issue on Raspberry PI
Replies: 18
Views: 4331

Re: Floating point issue on Raspberry PI

OK, I'm out of advice now, it works for me on an STM32F4.
by gmb42
Sat Dec 01, 2012 7:34 pm
Forum: General Support
Topic: Floating point issue on Raspberry PI
Replies: 18
Views: 4331

Re: Floating point issue on Raspberry PI

Are you sure the object file for chprintf got recompiled? Did you "make clean"? I tripped over that when I was trying to get fp output last week.

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