Class: EmuPower::Types::InstantaneousDemand

Inherits:
Notification show all
Defined in:
lib/emu_power/types.rb

Constant Summary

Constants inherited from Notification

Notification::UNIX_TIME_OFFSET

Instance Attribute Summary collapse

Attributes inherited from Notification

#device_mac, #meter_mac, #raw, #timestamp

Instance Method Summary collapse

Methods inherited from Notification

#initialize, #parse_bool, #parse_hex, #parse_timestamp, root_name, subclasses

Constructor Details

This class inherits a constructor from EmuPower::Types::Notification

Instance Attribute Details

#digits_left ⇒ Object

Returns the value of attribute digits_left.



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# File 'lib/emu_power/types.rb', line 125

def digits_left
  @digits_left
end

#digits_right ⇒ Object

Returns the value of attribute digits_right.



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# File 'lib/emu_power/types.rb', line 124

def digits_right
  @digits_right
end

#divisor ⇒ Object

Returns the value of attribute divisor.



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# File 'lib/emu_power/types.rb', line 123

def divisor
  @divisor
end

#multiplier ⇒ Object

Returns the value of attribute multiplier.



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# File 'lib/emu_power/types.rb', line 122

def multiplier
  @multiplier
end

#raw_demand ⇒ Object

Returns the value of attribute raw_demand.



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# File 'lib/emu_power/types.rb', line 121

def raw_demand
  @raw_demand
end

#suppress_leading_zeroes ⇒ Object

Returns the value of attribute suppress_leading_zeroes.



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# File 'lib/emu_power/types.rb', line 126

def suppress_leading_zeroes
  @suppress_leading_zeroes
end

Instance Method Details

#build(hash) ⇒ Object 



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# File 'lib/emu_power/types.rb', line 128

def build(hash)
	self.raw_demand = parse_hex('Demand')
	self.multiplier = parse_hex('Multiplier')
	self.divisor = parse_hex('Divisor')
	self.digits_right = parse_hex('DigitsRight')
	self.digits_left = parse_hex('DigitsLeft')
	self.suppress_leading_zeroes = parse_bool('SuppressLeadingZero')
end

#demand ⇒ Object

Return computed demand in KW. This may return nil if data is missing.



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# File 'lib/emu_power/types.rb', line 138

def demand
	return 0 if self.divisor == 0
	return nil if self.multiplier.nil? || self.raw_demand.nil? || self.divisor.nil?
	return self.multiplier * self.raw_demand / Float(self.divisor)
end