Class: RPiPinIn

Inherits:
Object
  • Object
show all
Includes:
RXFHelperModule
Defined in:
lib/rpi_pinin.rb

Instance Method Summary collapse

Constructor Details

#initialize(id, simulator = nil, pull: nil) ⇒ RPiPinIn 



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# File 'lib/rpi_pinin.rb', line 11

def initialize(id, simulator=nil, pull: nil)
  
  @id, @simulator = id, simulator
  
  if not @simulator then
    unexport()
    
    File.write '/sys/class/gpio/export', id
    File.write "/sys/class/gpio/gpio#{id}/direction", 'in'
    
    case pull
    when :up
      File.write "/sys/class/gpio/gpio#{id}/direction", 'high'
    end
    
    at_exit {   unexport() }
  end
  
end

Instance Method Details

#on_change(value) ⇒ Object

override this method if you wish



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# File 'lib/rpi_pinin.rb', line 33

def on_change(value)
  
end

#on_high ⇒ Object

override this method if you wish



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# File 'lib/rpi_pinin.rb', line 39

def on_high()
  
end

#to_s ⇒ Object 



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# File 'lib/rpi_pinin.rb', line 81

def to_s()
  @id
end

#watch ⇒ Object 



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# File 'lib/rpi_pinin.rb', line 58

def watch()
  
  old_value = read_value()

  loop do
    
    value = read_value()
    
    if value != old_value then
      
      yield(value) if block_given?
      on_change(value)
      
    end
    
    old_value = value
    
    sleep 0.1
  end
  
end

#watch_high ⇒ Object 



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# File 'lib/rpi_pinin.rb', line 43

def watch_high()
  
  watch() do |value|
    
    if value == 1 then
      
      yield if block_given?
      on_high()
      
    end
    
  end
  
end