#!/bin/bash
# Simple utility script for controlling the top LEDs.

print_usage_and_die()
{
        echo "Usage:  led-$1 [on | off]"
        exit 1
}


if [ "$#" != 2 ] ; then
        print_usage_and_die $(($LED_NUM+1))
fi

LED_NUM=$1
if [ "$LED_NUM" != 0 ] && [ "$LED_NUM" != "1" ] && [ "$LED_NUM" != "2" ] && [ "$LED_NUM" != "3" ] ; then
        print_usage_and_die $(($LED_NUM+1))
fi
SETTING=$2
if [ "$SETTING" != "on" ] && [ "$SETTING" != "off" ] ; then
        print_usage_and_die $(($LED_NUM+1))
fi


if [ "$2" == "on" ] ; then
        MODE="1"
else
        MODE="0"
fi

echo none > /sys/class/leds/beaglebone:green:usr$LED_NUM/trigger
echo $MODE > /sys/class/leds/beaglebone:green:usr$LED_NUM/brightness

exit 0

