Class: RubyBuzz::Light

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_buzz/light.rb

Overview

Each Pad has one LED light under the buzzer button.

There are four Light objects, each controls one of these lights.

Accessed via Pad:

‘RubyBuzz::Pad.light`

Controlled individually:

Controlled together:

  • RubyBuzz::Light.all_on

  • RubyBuzz::Light.all_off

Constant Summary collapse

@@lights = 
[]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(index) ⇒ Light

Initialize a buzzer by index 0 to 3.

Arguments:

  • index - Integer, 0 to 3, which light does this represent.



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# File 'lib/ruby_buzz/light.rb', line 33

def initialize(index)
  @file = `ls /sys/class/leds/*buzz#{index + 1}/brightness`
  @@lights << self
end

Instance Attribute Details

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/ruby_buzz/light.rb', line 24

def file
  @file
end

Class Method Details

.all_off ⇒ Object

Turn all lights off



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# File 'lib/ruby_buzz/light.rb', line 57

def self.all_off
  @@lights.each{|l|l.off}
  return nil
end

.all_on ⇒ Object

Turn all lights on



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# File 'lib/ruby_buzz/light.rb', line 65

def self.all_on
  @@lights.each{|l|l.on }
  return nil
end

Instance Method Details

#off ⇒ Object

Turn the light off



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# File 'lib/ruby_buzz/light.rb', line 49

def off
  `echo 0 > #{file}`
  return nil
end

#on ⇒ Object

Turn the light on



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# File 'lib/ruby_buzz/light.rb', line 41

def on
  `echo 1 > #{file}`
  return nil
end