Led sulle PC Engines ALIX

AlixLed.rb

class Led
  #numero da 1 a 3
  def initialize(ledno)
    ledno++ # passo 0 ma comando 1
    ledno=1 if ledno<1
    ledno=3 if ledno>3
    @ledsyspath="/sys/devices/platform/leds_alix2/leds/alix:#{ledno}/"
  end
  def blink(millisec)
    File.open(@ledsyspath+'trigger','w') { |f| f.write('timer') }
    File.open(@ledsyspath+'delay_off','w') do |f|
      f.write(millisec.to_s)
    end
    File.open(@ledsyspath+'delay_on','w') do |f|
      f.write(millisec.to_s)
    end
  end
  def blink_slow!
    blink(500)
  end
  def blink_fast!
    blink(50)
  end
  def on!
    File.open(@ledsyspath+'trigger','w') { |f| f.write('default-on') }
    File.open(@ledsyspath+'brightness','w') do |f|
      f.write('1')
    end
  end
  def off!
    File.open(@ledsyspath+'trigger','w') { |f| f.write("none") }
    File.open(@ledsyspath+'brightness','w') do |f|
      f.write('0')
    end
  end
end