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by spennig
Sat Mar 09, 2013 7:15 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: DS18B20 Max Distance
Replies: 44
Views: 48458

Re: DS18B20 Max Distance

At least 20m here in 1-wire mode.
by spennig
Fri Feb 22, 2013 8:36 pm
Forum: General programming discussion
Topic: New to Pi! - libusb not found
Replies: 6
Views: 22209

Re: New to Pi! - libusb not found

(Does this count as frequenting this forum more frequently than I previously claimed?)

You need to create the files.
by spennig
Tue Feb 19, 2013 9:41 pm
Forum: General programming discussion
Topic: New to Pi! - libusb not found
Replies: 6
Views: 22209

Re: New to Pi! - libusb not found

Good choice on w1retap. Which distro are you using? Rapsian I guess, as w1retap is in the Arch AUR, and would fix the dependencies. In any case, I would recommend you use the distro package manager to install the libusb development package. apt-get install libusb-dev The reason why w1retap failed to...
by spennig
Sun Oct 21, 2012 1:34 pm
Forum: Arch
Topic: kernel panic on boot
Replies: 25
Views: 8199

Re: kernel panic on boot

Initially, today's updates didn't help me.

Then I removed the now obsolete (as I'm now fully migrated to systemd) init=/bin/systemd left over in cmdline.txt, and it all works again. Solved, for me at least.
by spennig
Sat Oct 20, 2012 8:19 pm
Forum: Arch
Topic: kernel panic on boot
Replies: 25
Views: 8199

Re: kernel panic on boot

In summary: raspberrypi-firmware-20121017-1 : Will not boot 3.2.27-12-ARCH+ raspberrypi-firmware-20121013-1 : Boots (inter alia 3.2.27-12-ARCH+) raspberrypi-firmware-20121017-1/arm192_start.elf and the upstream firmware (@21:00 2012-10-20, using the upstream rpi-update ( Hexxeh/AndrewS) script) have...
by spennig
Sat Oct 20, 2012 7:26 pm
Forum: Arch
Topic: kernel panic on boot
Replies: 25
Views: 8199

Re: kernel panic on boot

This firmware update contemporaneous with 3.2.27-12-ARCH+ (notably the first 512MB release?) was the only time I've had such a problem. Fortunately, I'd rsync'ed the Pi to a backup machine prior to the update, and the -11 start.elf boots -12 just fine. @angel6700, you can find a start.elf (the 192/6...
by spennig
Sat Oct 20, 2012 4:56 pm
Forum: Arch
Topic: kernel panic on boot
Replies: 25
Views: 8199

Re: kernel panic on boot

Same here. The firmware is b0rken. Revert to the previous firmware and it boots just fine.
by spennig
Sun Sep 30, 2012 7:58 pm
Forum: Arch
Topic: archlinux-hf-2012-09-18.img won't boot
Replies: 27
Views: 7267

Re: archlinux-hf-2012-09-18.img won't boot

I've been running the image since c. 2012-09-20. Albeit, taken apart with qemu-nbd and rsynced onto a 16GB card (and then pacman updated since). Works a treat, particularly with the the later kernel and overclock modes.
by spennig
Tue Jul 24, 2012 5:55 pm
Forum: Arch
Topic: omxplayer whishes a nice day, but doesn't play videos
Replies: 21
Views: 44120

Re: omxplayer whishes a nice day, but doesn't play videos

New version in AUR fixes this (links against correct (ffmpeg-compat) libraries). btw, reporting bugs in the AUR is more likely to get things fixed than just discussing them here, which the Arch packager does not view very often.
by spennig
Wed Jul 18, 2012 7:13 pm
Forum: Arch
Topic: after pacman -Syu...
Replies: 8
Views: 3349

Re: after pacman -Syu...

Me too! Possibly related to the recent libsystemd update ??

Can be worked around by setting the sixth field (fs_passno) to 0 in /etc/fstab (so the system does not attempt to fsck /).
by spennig
Mon Jun 18, 2012 3:28 pm
Forum: Arch
Topic: arch = terminal only?
Replies: 30
Views: 47924

Re: arch = terminal only?

matthewtb wrote:Is Arch Linux terminal only or is there a pretty GUI as well? :D :D :D Thanks
Arch is whatever you choose to make it. Installing a GUI e.g LXDE is simple and well documented, plenty of information either by searching this forum, or Google is your friend.
by spennig
Mon Jun 11, 2012 8:31 pm
Forum: Raspbian
Topic: Kernel compile time....?
Replies: 13
Views: 7864

Re: Kernel compile time....?

There may not be fun in cross-compiling, but it takes under 3 minutes on a reasonably modern multi-cored machine. Well worth it if you keep upto date with git.
by spennig
Mon Jun 04, 2012 6:25 am
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

Right, so you're using ffmpeg .h files but linking against libav. I'm surprised this worked out well. No. I'm linking against the files provided by the Arch ffmpeg package, which includes the libav* headers and libraries. That's how Arch works. There is no separate libav (or -dev) package in Arch.Y...
by spennig
Sun Jun 03, 2012 9:22 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

That's interesting. Do you have /usr/include/libavfilter/avcodec.h on ArchLinux and if yes which package does it belong to? If no then I'm surprised it compiled as there is omxplayer/DllAvFilter.h:55 ... #include <libavfilter/avcodec.h> ... Indeed I do, otherwise I would not have been able to compi...
by spennig
Sun Jun 03, 2012 8:53 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

I don't believe that's the case.

In ArchLinux, it compiles fine against the unmodified distro libav* libararies, which are at newer than the Deb6 libraries (e.g.
/usr/lib/libavformat.so.52 (debian) vice /usr/lib/libavformat.so.53 (Arch).
by spennig
Sun Jun 03, 2012 8:22 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

Sorry to say it fails to build against the Debian libav* libraries, at least libavfilter is too old.
by spennig
Sun Jun 03, 2012 8:04 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

I'll need to build it from source in Debian, I think, due to point versions in the distro libav* libaraies.
by spennig
Sun Jun 03, 2012 7:52 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

At least on Arch, the binary against the distro libav* libraries runs just fine. I have a debian image on another SD; I'll give that a try.
by spennig
Sun Jun 03, 2012 7:39 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

Just done: make clean; make i.e. without building the embedded ffmpeg. ldd shows $ ldd omxplayer.bin libWFC.so => /opt/vc/lib/libWFC.so (0x401de000) libGLESv2.so => /opt/vc/lib/libGLESv2.so (0x400ab000) libEGL.so => /opt/vc/lib/libEGL.so (0x400df000) libbcm_host.so => /opt/vc/lib/libbcm_host.so (0x4...
by spennig
Sun Jun 03, 2012 7:25 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

Yes debian6/gcc-4.4.5 passes that hurdle on the pi (still gets close to the mem limit) but raspbian comes with gcc-4.6.3 which I guess uses a bit more memory and fails even on 224MB. Is there a reason why omxplayer links with ffmpeg and not libav? Could that be changed easily or involve a lot of wo...
by spennig
Sun Jun 03, 2012 6:49 pm
Forum: Arch
Topic: Xorg, configuring bpp (defaults to 16)
Replies: 10
Views: 8792

Re: Xorg, configuring bpp (defaults to 16)

I can only make it work if I start the fb console in 32-bit mode - changing at run time won't do it. Append to you kernel command line "bcm2708_fb.fbdepth=32" and reboot the system. Make sure you are using the new start.elf and have "framebuffer_ignore_alpha=1" in your config.txt. Then start X, and...
by spennig
Sun Jun 03, 2012 5:33 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

I built the original in a qemu VM with mem=192M (albeit on Arch rather than Debian). So it should be possible, modulo differences between arch and deb.
by spennig
Sat Jun 02, 2012 5:37 pm
Forum: Troubleshooting
Topic: Firmware update breaks wifi
Replies: 6
Views: 1980

Re: Firmware update breaks wifi

Hi all, Any idea when the firmware is likely to be 'fixed' (assuming that this is the problem) Thanks :) The firmware didn''t break wifi, rather you did by: (a) initally installing the vendor (presumably Debian) kernel (b) adding a wifi module **specifically built for that vendor kernel** so far, s...
by spennig
Sat Jun 02, 2012 3:39 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

The deb build is at http://seyrsnys.myzen.co.uk/rpi/omxplayer-make-debian-package.tar.xz . It's 3MB as it contains all the binary files (executable, libraries). There's a readme at the top of the archive that explains how to make the .deb, which once you've unpacked it is as simple as: cd debs dpkg ...
by spennig
Sat Jun 02, 2012 3:21 pm
Forum: Media centres
Topic: omxplayer - GPU enabled video player
Replies: 171
Views: 184183

Re: omxplayer - GPU enabled video player

spennig - Could you possibly post instructions on compiling / making a deb? I'm trying to build a version for the Raspbian Hexxeh image and could use some help. ffmpeg from omxplayer built fine, but when i run make for omxplayer it complains of arm-unknown-linux-gnueabi-g++ Command not found and I ...

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