Software Development

MJHammel’s Projects

So I've integrated TI's SGX package into the BeagleBox build. What this does is to run the SGX package's Makefile-based build which in turn installs a bunch of stuff from the archive into another directory. This directory will then contain a bunch of files which need to be installed again, […]

BeagleBox: SGX “install” script sucks

Fri August 31, 2012 in BeagleBox / Hardware / Linux / omapfb / Open Source / Software Development / X11 tagged BeagleBox / script / SGX

My media server died this past week. Actually, just the hard drive. It was running Fedora 14 and needed to be updated anyway. This server hooks into my Sony Bravia TV via HDMI using an nVidia GeForce 9800GT. After installing Fedora 16 to a new drive, I loaded kmod-nvidia and […]

Media servers: Flash, Hulu, Amazon, ARM and Fedora 16

Sun July 29, 2012 in Android / BeagleBox / Fedora / Firefox / Hardware / Linux / NVidia / omapfb / Open Source / Software Development / TV / Via Motherboards / X11 / XBMC tagged adobe / amazon / Android / ARM / beagleboard / BeagleBox / Bravia / drm / Fedora / firefox / Flash / flash player / flash player plugin / hulu / media servers

I ran into an interesting problem today. I have a C application with functions calling writev() to send data across the network. The messages being sent range from very small – a few bytes – to over 1MB. These functions have worked great up to this point. Today I integrated […]

writev() vs send() when using signals

Tue August 09, 2011 in Linux / Software Development tagged signal / signals / writev

The man page for timer_create() (used in applications, not in kernel code) gives a useful example of how to create and start high resolution timers. However, it fails to mention that if you use multiple timers with a single signal then you need have a single signal handler that can […]

Working with timer_create() to use multiple timers using a single ...

Fri August 05, 2011 in General / Linux / Software Development tagged alarm / callback / high resolution / kernel / resolution timers / sigaction / SIGINFO / signal / signal handler / SIGRTMIN / timer (updated 4646 days ago)

This past weekend I completed verification that the build works on Ubuntu (see below). In this process I also cleaned up the component builds a bit, added documentation and verified that a build from scratch (no local archives) works correctly. And it does. The resulting packages provide a booting system […]

BeagleBox: Ubuntu support ready, stable build but no video playback ...

Wed April 20, 2011 in BeagleBox / Hardware / Linux / Software Development tagged BeagleBox / BUI / ubuntu / video playback

Sitting around this weekend taking care of one of my pups (Bailey, who just had TPLO surgery to fix a torn ACL) I decided to take a deeper look at the problem with the cross toolchain supporting NEON instructions. I did a few more Google searches and found the Linaro […]

BeagleBox: fixed NEON problems in cross toolchain

Sat March 12, 2011 in BeagleBox / Hardware / Linux / omapfb / Software Development / X11 tagged BeagleBox / neon / toolchain

I made a little progress this week. First, I managed to build a 2.6.32 kernel based on Angstrom's recipes that appears to be the build to use for PSP support. Something tells me this is sufficient to get the Xorg driver working, but I haven't tried it yet. In any […]

BeagleBox quick hits: more kernels, NEON toolchain

Wed February 09, 2011 in BeagleBox / Hardware / Linux / omapfb / Software Development / X11 tagged BeagleBox / kernel / neon / toolchain

I’m back to working on BeagleBox again after a long pause. The holidays were the first delay, but now I’m down to working only weekends on BeagleBox because my weekday nights are taken up with working on the 2nd edition of my last GIMP book (promised to the publisher, No […]

BeagleBox: no joy with Xorg yet

Sun January 30, 2011 in BeagleBox / Hardware / Linux / Open Source / Software Development / X11 (updated 4837 days ago)

Over the holiday I managed to close out a few nagging issues in the builds. First, logins stopped working until I realized that I’d turned off the getty’s on tty0 and tty02. This wasn’t the complete fix, however, as Busybox was adding /etc/securetty to the rootfs and that file did […]

BeagleBox: working Xorg and eth support

Sat January 01, 2011 in Android / BeagleBox / Fedora / Hardware / Linux / Software Development / X11 tagged Android / angstrom / beagleboard / BeagleBox / BUI / buildroot / busybox / debian / DSS / DSS2 / fbdev / Fedora / kernel / kernel source tree / matchbox / metabuild / omap / omapfb / ubuntu / usb port / Video / wifi (updated 4866 days ago)

I’ve spent the past week or so trying to integrate my BUI releases into the Buildroot build for BeagleBox. My original intent was to use a metabuild of all of the packages I’d forked from Matchbox so I’d only have one package to build in Buildroot. The metabuild would build […]

BeagleBox: BUI reset

Sat December 18, 2010 in BeagleBox / Linux / Software Development tagged BeagleBox / BUI / buildroot / matchbox / metabuild / qemu

This past weekend I made the 0.4.0 release of BeagleBox. This is a major milestone for the project because it establishes the baselines for two of the core software componets, the bootloader and the kernel. I made a public release on SourceForge and updated the source and build pages on […]

BeagleBox: V0.4.0 released, wiki updated

Mon December 06, 2010 in BeagleBox / Hardware / Linux / Software Development / X11 tagged angstrom / BeagleBox / bootloader / BUI / dvi / dvi output / S-Video / sd card / sourceforge / u boot

Tonight I built the linux-omap-dss2 repo (master branch) from gitorious.org and tried it. This is the repo from the guy working on the OMAP DSS2 support in the kernel. And viola! S-Video output is once again working! BeagleBox now defaults to mainline u-boot (2010.09, at least) an this branch of […]

BeagleBox: DSS2/TV-out success!

Wed December 01, 2010 in BeagleBox / Hardware / Linux / Software Development tagged BeagleBox / DSS2 / mplayer / NTSC / omap / S-Video / TV-out / Video

Michael J. Hammel

Building a better today…because tomorrow is in question…