NB This Howto is around 5 years old, but its still linked to from some sources so I though I would keep it alive, the lirc bits are probably a little out of date by now
This howto is a quick description of how i got a pace rflink device (designed for TIVO) working on a standard RS232 serial port with lircd
Pace rf2link
The rf2link is a remote control extender for SKY and SKY+ systems that sends the control commands via the coax cable that is also used to send the picture to other televisions. These can be bought from http://www.pacelink.co.uk/rf2link.htm. These devices run of 9v power from the SKY/SKY+ box that can be switched on from the RF2 socket. Two varieties exist one of which allows the power to continue to the NEXT device along the coax and one that stops the power at the rf2link device, ONLY use the through power device IF you require the power at the next device, i.e. another remote extender. DO NOT ALLOW the 9v to reach your TV or your capture card! You have been warned!.
These are designed for a TIVO so two possibilities exist :-
1 – Cut off the jack plug
2 – Make a nice socket for the jack plug to plug in to
I chose number one. Next you will need some 1N4148 diodes or similar small signal diodes, a female DB9 socket and a plastic cover to mount the DB9 socket and hide away the 1N4148 diodes. These parts can be obtained from maplins http://www.maplin.co.uk or you local electronics shop.
Serial ports can signal from -9v to +9v (nominal) and can have voltages much lower than this. I assumed my serial port was 9v and used 4 diodes (0.6-0.7v drop per diode) and to stop the serial port putting any -ve voltages on the pacelink device.
DTR. -------->|---->|---->|----->|------- PACELINK Centre of cable GND ---------------------------------------- PACELINK Ground of cable
The pace link device input drives into a 3.5k ish resistor so i suspect a few extra volts won’t hurt but their are a load of transistors next so i would not recommend any negative volts reaching them so a minimum of one diode always!.-
Lircd configuration
I have based my work on my Mandrake 10.1 (cooker actually) setup so *exact* configuration may vary, I can’t remember where exactly I got this file i think it might be a standard LIRC config file but here it is anyway-
#Copyright (C) 1999 Christoph Bartelmus #You may only use this file if you make it available to others, #i.e. if you send it to lirc@bartelmus.de # # this config file was automatically generated # using lirc-0.6.4-CVS(serial) on Mon Jul 9 08:14:04 2001 # # contributed by Steve Davies steve@daviesfam.org # modified by Steve Hill steve@nexusuk.org 2003/06/29 # # brand: sky # model no. of remote control: # supported devices: 34000 20 # # begin remote name SKY flags CONST_LENGTH|RAW_CODES eps 30 aeps 100 ptrail 0 repeat 0 0 gap 149692 frequency 36000 duty_cycle 50 begin raw_codes name 0 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 name 1 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 name 2 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 name 3 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 name 4 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 name 5 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 888 name 6 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 444 name 7 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 444 444 name 8 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 name 9 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 888 name RED 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 888 444 444 888 888 name GREEN 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 888 444 444 444 444 888 444 name YELLOW 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 888 444 444 444 444 444 444 name BLUE 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 444 444 888 444 444 444 444 444 444 444 name TEXT 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 444 444 444 444 888 444 444 444 name BACKUP 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 444 444 444 888 444 444 name HELP 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 444 444 444 444 444 888 name CURSOR-LEFT 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 888 444 444 888 888 888 444 name CURSOR-DOWN 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 888 444 444 888 444 444 888 name CURSOR-RIGHT 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 888 444 444 888 888 444 444 name CURSOR-UP 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 888 444 444 888 444 444 444 444 444 name SELECT 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 888 444 444 444 444 888 444 444 444 name CHANNEL-DOWN 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 444 888 name CHANNEL-UP 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 444 444 444 444 name I 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 444 444 888 888 888 444 444 name ONOFF 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 444 444 444 name TV 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 444 888 888 444 444 444 name SKY 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 name TVGUIDE 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 888 444 444 888 444 444 888 444 444 444 name BOXOFFICE 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 444 444 444 444 444 444 888 888 name SERVICES 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 444 444 444 444 444 444 444 444 888 444 name INTERACTIVE 2664 888 444 444 444 444 444 888 444 888 888 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 444 888 444 444 444 444 444 444 888 888 888 888 end raw_codes end remote
Channel changer
Ok this is the script i used for changing channels. The original author of this script is Steve (2nd name unknown) and the script can be found at his page http://nexusuk.org/projects/mythtv/lirc/ I have made some mods as the script would not work for me out of the box for me at least.
skychannel.sh
#!/bin/sh # For channels from 100 - 999 just request a channel number, for channels # > 1000, select a channel from the "other channels" list. # Channels < 100 get a 1 (and maybe a 0) glued on the front export PATH=$PATH:/usr/local/bin declare -i channel channel=$1 if [ "$channel" -lt "100" ]; then $channel=`printf '1%02i' $channel` fi RV=$? if [ "$channel" -lt "1000" ]; then declare -i digit1 declare -i digit2 declare -i digit3 digit1=$channel/100 digit2=$channel/10 digit2=$digit2%10 digit3=$channel%10 rc SEND_ONCE sky sky backup $digit1 $digit2 $digit3 else channel=$channel-1000 rc SEND_ONCE sky_tx sky rc SEND_ONCE sky_tx services rc SEND_ONCE sky_tx 6 while [ "$channel" -gt "0" ]; do rc SEND_ONCE sky_tx down channel=$channel-1 done rc SEND_ONCE sky_tx select fi
Starting lircd
In my /etc/sysconfig/lircd file i have the following variables set
DRIVER=default HWMOD=lirc_serial DEVICE=/dev/lirc/0 COM_PORT=/dev/ttyS0 DRIVER_OPTS="irq=4 io=0x3f8 type=0"
This is used in the mandrake setup when the /etc/init.d/lircd start is called what this achieves is that a
setserial $ uart none
is called to set up the serial port then a
modprobe $ $ > /dev/null
is done. Followed by
daemon lircd --driver=default --device=/dev/lirc/0
The modprobe lirc_serial loads the lirc serial driver and this patches itself into /dev/lirc/0 (or the next available) the lirc daemon has to be told which device driver to connect to.
Lircd is now up!
Turning on the RF2 output
To enable the engineers menu press services on the sky control, select system set up then press “0”,”1″,”SELECT” and you will be in the engineers menu. The options you want are RF Outlets where you can turn the power on to RF2 and set the output channel.
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