Class: MyFirmataPluginPir

Inherits:
Object
  • Object
show all
Defined in:
lib/myfirmata-plugin-pir.rb

Overview

note: the conditional statement for publishing a notice was based on the code from the humble_rpi-plugin-pir gem

Instance Method Summary collapse

Constructor Details

#initialize(arduino, settings: {}, variables: {}) ⇒ MyFirmataPluginPir

Returns a new instance of MyFirmataPluginPir.



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# File 'lib/myfirmata-plugin-pir.rb', line 17

def initialize(arduino, settings: {}, variables: {})
  
  @arduino = arduino
  @settings, @variables = settings, {debug: false}.merge(variables)
  @debug = @variables[:debug
                      ]
  @pinx = @settings[:pin] || 2

  @arduino.pin_mode @pinx, ArduinoFirmata::INPUT
  @duration = settings[:duration] || '1 minute'
  
end

Instance Method Details

#start ⇒ Object Also known as: on_start 



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# File 'lib/myfirmata-plugin-pir.rb', line 30

def start()
       
  count = 0
  
  duration = @duration    
  puts 'duration: ' + duration.inspect if @debug
  notifier = @variables[:notifier]
  topic = @variables[:device_id]
  msg = @settings[:msg] || 'motion'    
  pinx = @pinx
  threshold = if @settings[:threshold] then
    @settings[:threshold]
  else
    ChronicDuration.parse(duration) > 30 ? 5 : 0
  end
  
  t1 = Time.now - (ChronicDuration.parse(duration) + 10)   
  puts 't1: ' + t1.inspect if @debug
  
  puts 'ready to detect PIR sensor'    
  
  debug = @debug
  
  @arduino.on :digital_read do |pin, high|

    if pin == pinx and high then
              
      count += 1
      puts 'count: ' + count.inspect if debug

      if Time.now > t1 + ChronicDuration.parse(duration)  then

        if count > threshold then
          
          
          fqm = if ChronicDuration.parse(duration) == 1 then
            "%s/motion: detected within the past second" % topic
          elsif count == 1
            "%s/motion: detected once within the past %s"% [topic, duration]
          elsif count == 2
            "%s/motion: detected twice within the past %s" % \
              [topic, duration]
          else
            "%s/motion: detected %s times within the past %s" % \
              [topic, count, duration]
          end
          
          notifier.notice fqm 
        end
        t1 = Time.now
        count = 0
      end        
      
    end
  end

end