Class: HumbleRPiPluginButton

Inherits:
Object
  • Object
show all
Defined in:
lib/humble_rpi-plugin-button.rb

Instance Method Summary collapse

Constructor Details

#initialize(settings: {ignore_keyup: true}, variables: {}) ⇒ HumbleRPiPluginButton

Returns a new instance of HumbleRPiPluginButton.



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# File 'lib/humble_rpi-plugin-button.rb', line 12

def initialize(settings: {ignore_keyup: true}, variables: {})

  @ignore_keyup = settings[:ignore_keyup] || true
  @pins = settings[:pins].map {|x| RPiPinIn.new x, pull: :up}
  @notifier = variables[:notifier]
  @device_id = variables[:device_id] || 'pi'
  
end

Instance Method Details

#start ⇒ Object Also known as: on_start 



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# File 'lib/humble_rpi-plugin-button.rb', line 21

def start()
  
  notifier = @notifier
  device_id = @device_id
  
  t0 = Time.now + 1
      
  puts 'ready to detect buttons'
  
  @pins.each.with_index do |button, i|
    
    puts 'button %s on GPIO %s enabled ' % [i+1, button]
          
    n = (i+1).to_s
          
    Thread.new do      
      
      button.watch do |value|
        
        # ignore any movements that happened 250 
        #               milliseconds ago since the last movement
        if t0 + 0.25 < Time.now then                   
            
          state = case value
          when 1
            @ignore_keyup ? :press : :down
          when 0
            :up unless @ignore_keyup
          end

          if state            
            notifier.notice "%s/button/%s: key%s" % [device_id, i, state]
          end
          
          t0 = Time.now
          
        end
      end
      
    end      
    
  end    

  
end