aredn/files/usr/local/bin/linkled

#!/bin/sh
<<'LICENSE'
  Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
  Copyright (C) 2015 Conrad Lara
   See Contributors file for additional contributors

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation version 3 of the License.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

LICENSE

BOARD_TYPE=$(/usr/local/bin/get_hardwaretype)

case "$BOARD_TYPE" in
	airrouter)
		LINK1LED=$(readlink -f '/sys/class/leds/ubnt:green:globe')
		;;
	rb-912uag-5hpnd)
		LINK1LED=$(readlink -f '/sys/class/leds/rb:green:led1')
                ;;
	*)
		LINK1LED=$(readlink -f /sys/class/leds/*link1)
		;;
esac


firmware_upgrade_mode() {
	# Put the LED in "upgrade" mode
	echo timer > "$LINK1LED/trigger"
	echo 100 > "$LINK1LED/delay_on"
	echo 100 > "$LINK1LED/delay_off"
	echo 1 > "$LINK1LED/brightness"

}


reset_led() {
	# Reset the LED to a blank state
	echo none > "$LINK1LED/trigger"
	echo 0 > "$LINK1LED/brightness"
}


link_state() {
	{
		reset_led

		while true; do
			sleep 5;
			if echo /nei | nc 127.0.0.1 2006 2>/dev/null | grep -q YES; then
				echo 1 > "$LINK1LED/brightness"
			else
				echo 0 > "$LINK1LED/brightness"
			fi
		done;
	} & # Push into the background
}

case $1 in
	"upgrade" )
		firmware_upgrade_mode
		;;
	"restore" )
		reset_led
		;;
	*)
		link_state
		;;
esac