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contrib-munin/plugins/mythtv/dvb-signal

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#!/bin/bash
#
# Reads the signal strength from a DVB-c/s/t tuner
#
# (c) 2009 i.dobson@planet-ian.com
#
# 24.11.2009 Version 1.1 added support for multiple tuners
# 22.11.2009 Version 1.0 added check that femon iinstalled
# 21.11.2009 Version 0.9 added adapter number
# 20.11.2009 Version 0.8 first version
#
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# Magic markers (optional):
#%# family=auto
#%# capabilities=autoconf suggest
#Starting point for tuner to watch
Tuner=0
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case $1 in
autoconf|detect)
REQ=`which femon`
if [ "$REQ" = "" ]; then
echo "no (femon not installed)"
exit 1
fi
if [ -e /dev/dvb/adapter$Tuner/ ]; then
echo yes
exit 0
else
echo "no (dvb tuner $Tuner not found)"
exit 1
fi;;
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config)
echo "graph_title DVB signal strength"
echo 'graph_args --base 1000 -l 0'
echo 'graph_vlabel Signal Strength %'
echo 'graph_category tv'
echo 'graph_scale no'
while [ -e /dev/dvb/adapter$Tuner/ ]; do
Tuner=$[$Tuner+1]
done
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TunerLoop=0
while [ $TunerLoop -lt $Tuner ] ; do
echo "signal$TunerLoop.label Signal strength for tuner $TunerLoop"
echo "signal$TunerLoop.draw LINE1"
echo "signal$TunerLoop.min 0"
TunerLoop=$[$TunerLoop+1]
done
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TunerLoop=0
while [ $TunerLoop -lt $Tuner ] ; do
echo "snr$TunerLoop.label Signal to noise for tuner $TunerLoop"
echo "snr$TunerLoop.draw LINE1"
echo "snr$TunerLoop.min 0"
TunerLoop=$[$TunerLoop+1]
done
TunerLoop=0
while [ $TunerLoop -lt $Tuner ] ; do
echo "ber$TunerLoop.label Bit error rate for tuner $TunerLoop"
echo "ber$TunerLoop.draw LINE1"
echo "ber$TunerLoop.min 0"
echo "ber$TunerLoop.max 200"
TunerLoop=$[$TunerLoop+1]
done
TunerLoop=0
while [ $TunerLoop -lt $Tuner ] ; do
echo "unc$TunerLoop.label Uncorrectable errors for tuner $TunerLoop"
echo "unc$TunerLoop.draw LINE1"
echo "unc$TunerLoop.min 0"
echo "unc$TunerLoop.max 200"
TunerLoop=$[$TunerLoop+1]
done
exit 0;;
esac
echo "" > /tmp/dvb-signal.text
echo "" > /tmp/dvb-signal1.text
Tuner=0
while [ -e /dev/dvb/adapter$Tuner/ ] ; do
check=`femon -c 1 -a $Tuner | grep signal `
echo $check $Tuner| awk '{printf ("signal%.0f.value %.1f\nsnr%.0f.value %.1f\nber%.0f.value %.2f\nunc%.0f.value %.4f\n#raw values Tuner %.0f %.0f %.0f %.0f %.0f \n",$17,strtonum("0x"$5)/655,$17,strtonum("0x"$8)/655,$17,strtonum("0x"$11),$17,strtonum("0x"$14),$17,strtonum("0x"$5),strtonum("0x"$8),$11,$14)}' >> /tmp/dvb-signal.text
echo $check >> /tmp/dvb-signal1.text
Tuner=$[$Tuner+1]
done
cat /tmp/dvb-signal.text | grep signal
cat /tmp/dvb-signal.text | grep snr
cat /tmp/dvb-signal.text | grep ber
cat /tmp/dvb-signal.text | grep unc
cat /tmp/dvb-signal.text | grep raw
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exit 0