PhishBox/sensorscanner.sh

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2014-11-03 22:43:56 +01:00
#!/bin/bash
# run in background, install into inittab, anything goes
# example for inittab:
# P0:2345:respawn:/root/buttonscanner.sh
COUNTER=/home/pi/website/counter.txt
WiringPIN=18 # physical pin 12
PATH=/bin:/usr/bin:/usr/local/bin
gpio -g mode $WiringPIN in # set to input mode
gpio -g mode $WiringPIN down # set internal pulldown
echo "Sensor scanner starting"
while true
do
echo "scanning..."
gpio -g wfi $WiringPIN falling # wait for detection (uses no cpu, but interrupt)
echo "got event"
gpio -g read $WiringPIN
if [ $(gpio -g read $WiringPIN) -eq 0 ]
then
counter="$(head "$COUNTER")"
counter=$((counter+1))
cp -p "$COUNTER" "$COUNTER".new
echo "$counter" > "$COUNTER".new
mv "$COUNTER".new "$COUNTER"
echo "counter is now $counter"
echo "sleeping for 10s"
sleep 10
fi
done