Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Control your Raspberry Pi using your TV remote
#!/bin/bash
# Simple script to control your Raspberry Pi with your TV remote using libcec
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# You can set this to be run in your desktop "startup programs", or
# at the last line of /etc/rc.local, just to say a couple options
#
# keys:
# OK - launch kodi
# up - launch browser
# down - change wallpaper (this is a custom script of mine)
# left - suspend my desktop computer
# back - exit desktop session
#
# You can hit 'stop' to enter "mouse mode", or 'play' to exit it.
# In "mouse mode" you can move around the mouse with the remote arrows, hit ok
# to double-click.
#
# This is just an example to provide ideas, so you should change what each button does.
#
USER=pi # user that will be logged in
OSDCOLOR=red # color for xosd messages
MOUSESPEED=50 # how many pixels a mouse will move on each press
#dbg=echo # uncomment to just print the command without executing it
VERBOSE=0 # print echov lines
#DRY_RUN="yes" # uncomment to actually ignore button presses
type cec-client &>/dev/null || { echo "cec-client is requiered"; exit; }
type xdotool &>/dev/null || NOXDOTOOL=#
USR_CMD="su - $USER -c"
_XAUTH="/home/$USER/.Xauthority"
function d(){ eval "$NOXDOTOOL $@" ; }
function echov(){ [[ "$VERBOSE" == "1" ]] && echo $@ ; }
function filter_key(){ grep -q "key pressed: $1 .* duration" <( echo "$2" ) ; }
function mouse_move(){ XAUTHORITY="$_XAUTH" DISPLAY=:0 xdotool mousemove_relative -- $@; }
function mouseclick(){ XAUTHORITY="$_XAUTH" DISPLAY=:0 xdotool click --repeat 2 1 ; }
function osdecho(){ type osd_cat &>/dev/null && echo "$@" | \
XAUTHORITY="$_XAUTH" DISPLAY=:0 osd_cat -ptop -Acenter -c$OSDCOLOR; }
while :; do
cec-client | while read l; do
echov $l
[[ "$DRY_RUN" != "" ]] && continue
pgrep kodi && { echov "Ignoring key, because Kodi is running"; continue; }
if filter_key "select" "$l"; then
[[ "$MOUSEMODE" == "1" ]] && mouseclick || {
$dbg $USR_CMD kodi
killall cec-client
}
break
fi
if filter_key "up" "$l"; then
[[ "$MOUSEMODE" == "1" ]] && mouse_move 0 -$MOUSESPEED || \
$dbg $USR_CMD "DISPLAY=\":0\" x-www-browser" &
fi
if filter_key "left" "$l"; then
[[ "$MOUSEMODE" == "1" ]] && mouse_move -$MOUSESPEED 0 || \
$dbg nohup su - nacho -c "ssh nacho@desktop sudo pm-suspend" &
fi
if filter_key "down" "$l"; then
[[ "$MOUSEMODE" == "1" ]] && mouse_move 0 $MOUSESPEED || \
$dbg $USR_CMD "DISPLAY=\":0\" /home/pi/.config/lxsession/LXDE-pi/random_wp.sh"
fi
if filter_key "right" "$l"; then
[[ "$MOUSEMODE" == "1" ]] && mouse_move $MOUSESPEED 0
fi
if filter_key "exit" "$l"; then
$dbg $USR_CMD "pkill -SIGTERM -f lxsession"
fi
if filter_key "stop" "$l"; then
d echov "mouse mode on"
d osdecho "mouse mode on"
d MOUSEMODE=1
fi
if filter_key "play" "$l"; then
echov "mouse mode off"
osdecho "mouse mode off"
MOUSEMODE=0
fi
done
done
# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
@Electrik-rich546456

This comment has been minimized.

Copy link

@Electrik-rich546456 Electrik-rich546456 commented Jun 11, 2020

Hello I found an email address to ask you if you could help me before seeing that i can post my question on here so here goes.
I found your script and changed it a bit to see if I could listen for traffic from the tv notifying me of source change.
I managed to do that but the next thing I wanted to do is beyond me so how do I make the script listen to keyboard key press and then send the info to cec-client for changing hdmi sources and on and off.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment