Remote controlling via CGI Scripts

Basic Concept

I love my chumby, especially to listen to internet radio streams. But I hate to manipulate the device "by hand" to change a station or turn down the volume. Here are some simple cgi scripts to remote control your chumby. Basically, we're manipulating the control panel as described here via some cgi-scripts: Built-in webserver. Alternatively, we can manipulate /proc or could call existing shell scripts.

Put the scripts in /psp/cgi-bin and access them via the built-in web server:

http://<ip.of.your.chumby>/cgi-bin/custom/<name.of.your.script>

Sound

Setting the volume

#!/bin/sh                                                                                               
# /psp/cgi-bin/setvol                                                                                   
# needs volume as parameter between 0 and 100                                                           
# e.g. http://<ip.of.you.chumby/cgi-bin/custom/setvol?30
#                                           
echo "HTTP/1.1 200 ok"                                                                                  
echo "Content-type:  text/html"                                                                         
echo "<event type=\"MusicPlayer\" value=\"setVolume\" comment=\"${QUERY_STRING}\"/>" > /tmp/flashplayer.
echo ""                                                                                                 
chumbyflashplayer.x -F1 > /dev/null 2>&1                                                                
echo "Volume set to ${QUERY_STRING}"     

NB: Make sure you escape any quotation marks when echoing them in your script.

Muting

#!/bin/sh
echo "HTTP/1.1 200 ok"
echo "Content-type:  text/html"
echo "<event type=\"MusicPlayer\" value=\"setMute\" comment=\"on\"/>" > /tmp/flashplayer.event
chumbyflashplayer.x -F1

Unmute with comment="off"

soma.fm

quick and dirty - just give it the name of your stream (groovesalad|secretagent|lush|digitalis|beatblender|...) as a parameter

#!/bin/sh
echo "HTTP/1.1 200 ok"
echo "Content-type:  text/html"
echo ""
wget -c http://somafm.com/startstream=fw/${QUERY_STRING}.pls -O /tmp/${QUERY_STRING}.pls
MYFILE=`grep File1= /tmp/${QUERY_STRING}.pls | cut -d "=" -f2`
echo "<event type=\"UserPlayer\" value=\"play\" comment=\"${MYFILE}\"/>" > /tmp/flashplayer.event
chumbyflashplayer.x -F1 > /dev/null 2>&1       
echo ""
echo ""     
echo "Now playing ${MYFILE}"
rm /tmp/${QUERY_STRING}.pls

Dimming the display

/proc/sys/sense1/dimlevel can have different values: 0 is normal, 1 is dimmed, 2 is off. According to [1], the display can't go from off to dimmed, so when going to the dimmed level, we just always switch to the normal level first and wait for a second.

dimmed

#!/bin/sh
echo "HTTP/1.1 200 ok"
echo "Content-type:  text/html"
echo ""
echo 0 > /proc/sys/sense1/dimlevel
sleep 1
echo 1 > /proc/sys/sense1/dimlevel

off

#!/bin/sh
echo "HTTP/1.1 200 ok"
echo "Content-type:  text/html"
echo ""
echo 2 > /proc/sys/sense1/dimlevel

Change the widget

use nextWidget or prevWidget as a value

#!/bin/sh
echo "HTTP/1.1 200 ok"
echo "Content-type:  text/html"
echo ""
echo "<event type=\"WidgetPlayer\" value=\"nextWidget\" comment=\"\"/>" > /tmp/flashplayer.event
chumbyflashplayer.x -F1 > /dev/null 2>&1