IR Obstacle Sensor

/*
* Project name:
IR Obstacle Sensor
* Copyright
(c) Researchdesignlab.com
* Test configuration:
BOARD: RASPBERRY PI & BEAGLEBONE
Software: ECLIPSE

*/

#PROJECT NAME:IR OBSTACLE SENSOR
#PROJECT LANGUAGE:SHELL SCRIPT
#COPYRIGHT:RESEARCH DESIGN LAB(C)

echo 4 > /sys/class/gpio/export
echo 17 > /sys/class/gpio/export

echo in > /sys/class/gpio/gpio4/direction
echo out > /sys/class/gpio/gpio17/direction

echo 0 > /sys/class/gpio/gpio17/value

while [ 1 ]
do

x=$(cat /sys/class/gpio/gpio4/value)

if [ $x = 1 ]
then
echo 0 > /sys/class/gpio/gpio17/value
else
echo 1 > /sys/class/gpio/gpio17/value
fi
done