testled

#!/bin/sh
led="/sys/class/leds/beagleboard::"

get_led_state () {
usr0_trigger=`cat ${led}usr0/trigger | sed -e "s/^.*\[\(.*\)\].*$/\1/"`
usr1_trigger=`cat ${led}usr1/trigger | sed -e "s/^.*\[\(.*\)\].*$/\1/"`
usr0_brightness=`cat ${led}usr0/brightness`
usr1_brightness=`cat ${led}usr1/brightness`
echo "USR0 LED state ($usr0_brightness) [$usr0_trigger]"
echo "USR1 LED state ($usr1_brightness) [$usr1_trigger]"
}

get_led_state
save0t="$usr0_trigger"
save0b="$usr0_brightness"
save1t="$usr1_trigger"
save1b="$usr1_brightness"

echo "Turning LEDs on for 3 seconds..."
echo "none" > ${led}usr0/trigger
echo "none" > ${led}usr1/trigger
echo "1" > ${led}usr0/brightness
echo "1" > ${led}usr1/brightness
get_led_state
sleep 3

echo "Turning USR0 LED off for 3 seconds..."
echo "0" > ${led}usr0/brightness
get_led_state
sleep 3

echo "Turning USR1 LED off for 3 seconds..."
echo "0" > ${led}usr1/brightness
get_led_state
sleep 3

echo "Restoring LEDs to their original state..."
echo "$save0b" > ${led}usr0/brightness
echo "$save1t" > ${led}usr1/brightness
echo "$save0t" > ${led}usr0/trigger
echo "$save1t" > ${led}usr1/trigger
get_led_state