#!/bin/bash
LED3_PATH=/sys/class/leds/beaglebone:green:usr3
 
function removeTrigger
{
         echo "none" >> "$LED3_PATH/trigger"
}
 
echo "The LED3 user is starting"
if [ "$1" == "on" ]; then
        echo "LED on"
         removeTrigger
         echo "1" >> "$LED3_PATH/brightness"
elif [ "$1" == "off" ]; then
         echo "LED off"
         removeTrigger
         echo "0" >> "$LED3_PATH/brightness"
elif [ "$1" == "blink" ]; then
	"LED blinking"
	removeTrigger
	echo "1" >> "$LED3_PATH/brightness"
	sleep 0.5
	echo "0" >> "$LED3_PATH/brightness"
	sleep 0.5
elif [ "$1" == "help" ]; then
	echo "This is an application to control User LED 3"
	echo "List of commands: "
       	echo "on - Powers on the LED"
	echo "off - Powers off the LED"
	echo "blink - Makes the LED blink"

else
	echo "Error: This is not a command for this application"
	echo "These are the commands you can use: "
	echo "on - Powers on the LED"
	echo "off - Powers off the LED"
	echo "blink - Makes the LED blink"	
fi
echo "Done"