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@dt
Created October 14, 2013 19:56
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lightup script
#!/bin/bash
echo 18 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio18/direction
echo 1 > /sys/class/gpio/gpio18/value
LAST=`curl -s https://api-davidt-staging.foursquare.com/norep.id`
echo "`date` starting up..."
echo "`date` initial id: $LAST"
killfile=/opt/watcher.kill
if [ -f "$killfile" ]; then
rm "$killfile"
fi
COUNTER=0
echo 0 > /sys/class/gpio/gpio18/value
sleep 1
echo 1 > /sys/class/gpio/gpio18/value
while [ ! -f "$killfile" ]; do
ID=`curl -s https://api-davidt-staging.foursquare.com/norep.id`
if [ -z "$ID" ]; then
echo ""
echo "`date` skipping blank ID"
ID="$LAST"
fi
if [ "$ID" != "$LAST" ]; then
echo ""
echo "`date` changed: $LAST -> $ID"
echo 0 > /sys/class/gpio/gpio18/value
sleep 8
echo 1 > /sys/class/gpio/gpio18/value
COUNTER=0
else
COUNTER=$(((COUNTER + 1) % 3600))
if [ $COUNTER -eq 0 ]; then
echo "`date` still waiting..."
fi
if [ $((COUNTER % 30)) -eq 0 ]; then
printf "."
fi
fi
LAST="$ID"
sleep 1
done
echo "exiting due to kill file"
rm "$killfile"
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