#
 # (C) Copyright Johannes Brodwall <johannes@brodwall.com>, 2006
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 # http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.


def xps_led_all(color = 1, intensity = 7)
   system "xps_led_control -all #{color} -front 1 -bright #{intensity}" or
	   raise "xps_led_control failed. Error code: #{$?}"
end

def xps_led(intensity, color = 1)
   intensity %= 14
   intensity -= 7
   intensity = intensity.abs
   # puts "xps_led_control -all #{color} -bright #{intensity}"
   xps_led_all(color, intensity)
end

def pulse_brightness(sleep_time = 0.2, color = 1)
  (0..100).each do
    |i|
    xps_led(i, color)
    sleep(sleep_time)
  end
end


def pulse_color(sleep_time = 0.5, brightness = 7)
  (0..16000).each do
    |i|
    xps_led(brightness, (i % 16) + 1)
    sleep(sleep_time)
    xps_led(brightness, 0)
    sleep(sleep_time/2)
  end
end

def cycle_array(colors, sleep_time = 0.2)
  colors.each { |color| xps_led(7, color); sleep(sleep_time) }
end


if __FILE__ == $0
  puts "Cycle array"
  cycle_array([1, 5, 0, 1, 0, 2, 0, 1])
end