#!/bin/sh

b=/sys/class/leds/keyboard/brightness
lux=/sys/devices/platform/i2c_omap.2/i2c-0/0-0029/lux

on() {
  echo >$b 255
}

off() {
  echo >$b 0
}

maybe_on() {
  if [ `cat $lux` -lt 5 ] ; then on ; else off ; fi
}

case $1 in
    on) on ;;
    off) off ;;
    *) maybe_on ;;
esac
