Class: Plc::Emulator::EmuDevice

Inherits:
PlcDevice
  • Object
show all
Defined in:
lib/plc/emulator/emu_device.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(a, b = nil) ⇒ EmuDevice

Returns a new instance of EmuDevice.



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# File 'lib/plc/emulator/emu_device.rb', line 36

def initialize a, b = nil
  super
  @lock = Mutex.new
  @in_value = 0
  @out_value = 0
  @changed = false
end

Instance Attribute Details

#in_value ⇒ Object (readonly)

Returns the value of attribute in_value.



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# File 'lib/plc/emulator/emu_device.rb', line 33

def in_value
  @in_value
end

#out_value ⇒ Object (readonly)

Returns the value of attribute out_value.



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# File 'lib/plc/emulator/emu_device.rb', line 33

def out_value
  @out_value
end

#plc ⇒ Object

Returns the value of attribute plc.



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# File 'lib/plc/emulator/emu_device.rb', line 34

def plc
  @plc
end

Instance Method Details

#+(value) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 163

def + value
  d = super
  plc ? plc.device_by_name(d.name) : d
end

#-(value) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 168

def - value
  d = super
  plc ? plc.device_by_name(d.name) : d
end

#bool(kind = nil) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 71

def bool kind=nil
  v = value kind
  case v
  when nil, false, 0
    false
  else
    true
  end
end

#bool=(value) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 81

def bool= value
  set_value value
end

#changed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/plc/emulator/emu_device.rb', line 56

def changed?
  @changed
end

#device_by_suffix_number(suffix, number) ⇒ Object

NOTE: override at subclass

It should get from plc



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# File 'lib/plc/emulator/emu_device.rb', line 62

def device_by_suffix_number suffix, number
  d = super
  plc.device_by_name d.name
end

#reset ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 44

def reset
  @lock.synchronize {
    super
    @in_value = nil
    @out_value = 0
  }
end

#set_value(value, kind = nil) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 132

def set_value value, kind=nil
  @lock.synchronize {
    case kind
    when :in
      @in_value = value
    when :out
      @out_value = value
    else
      @changed = true unless @value == value
      @value = value if @changed
    end
  }
end

#set_word(value, kind = nil) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 105

def set_word value, kind=nil
  if bit_device?
    f = 1
    d = self
    16.times do
      d.set_value (value & f) != 0, kind
      d = d + 1
      f <<= 1
    end
  else
    set_value value, kind
  end
end

#sync_input ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 146

def sync_input
  @lock.synchronize {
    unless @in_value.nil?
      @changed = true unless @value == @in_value
      @value = @in_value if @changed
      @in_value = nil
    end
  }
end

#sync_output ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 156

def sync_output
  @lock.synchronize {
    @out_value = @value
    @changed = false
  }
end

#value(kind = nil) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 119

def value kind=nil
  @lock.synchronize {
    case kind
    when :in
      @in_value
    when :out
      @out_value
    else
      @value
    end
  }
end

#value=(value) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 67

def value= value
  set_value value
end

#word(kind = nil) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 85

def word kind=nil
  if bit_device?
    v = 0
    d = self
    f = 1
    16.times do
      v |= f if d.bool(kind)
      d = d + 1
      f <<= 1
    end
    v
  else
    value kind
  end
end

#word=(value) ⇒ Object 



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# File 'lib/plc/emulator/emu_device.rb', line 101

def word= value
  set_word value
end