The Linux Infrared Remote Control (LIRC) Project
I cheated a little for the software and used a short cut made possible by Jarod Wilson, who has done a great job of documenting MythTV and Fedora Core 4. After you have used up2date to bring your system up to date with the latest security patches, start up a terminal session and enter:
su <enter the root password> echo "export KVER=\`uname -r\`" >> /etc/profile.d/kver.sh cd /etc/yum.repos.d/ wget http://wilsonet.com/mythtv/atrpms.repo wget http://wilsonet.com/mythtv/freshrpms.repo yum install lirc-kmdl-$KVER yum install lirc-lib wget --no-check-certificate https://svn.wilsonet.com/svn/mythtvology/trunk/rc.sysinit-mm.diff patch /etc/rc.d/rc.sysinit < rc.sysinit-mm.diff yum install lirc
Assuming that you are connecting the detector to ttyS0, put the following lines in file /etc/modprobe.conf:
install lirc_serial /bin/setserial /dev/ttyS0 uart none ; /sbin/modprobe --ignore-install lirc_serial alias char-major-61 lirc_serial options lirc_serial irq=4 io=0x3f8
If you are connecting the detector to ttyS1, enter the following lines:
install lirc_serial /bin/setserial /dev/ttyS1 uart none ; /sbin/modprobe --ignore-install lirc_serial alias char-major-61 lirc_serial options lirc_serial irq=3 io=0x2f8
To test that you have a working infrared detector, type mode2. Point a working remote control at your detector and start pressing buttons. If you see something like:
pulse 1187 space 596 pulse 598 space 623 pulse 553 space 643 pulse 630 space 603
you have a working detector. If not, it's time to open up the hood and start troubleshooting. The first thing to check for is cold solder joints, where the solder has not bonded properly with the parts. Look for connections with a dull surface. Clip the heat sink to the appropriate nearby part, reheat those joints and remove the old solder with your solder remover. Then, re-solder using fresh solder.
Assuming things do work now, you need to start configuring your system to work with the remote. But that is another significant project, one for another article.
Colin McGregor works for a Toronto area charity, does consulting on the side and has served as President of the Toronto Free-Net. He also is secretary for and occasional guest speaker at the Greater Toronto Area Linux User Group meetings.
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