Class: TemperatureSensor

Inherits:
DigitalSensor show all
Defined in:
lib/temperature_sensor.rb

Overview

TemperatureSensor - temperature sensing receptor

Instance Method Summary collapse

Methods inherited from DigitalReceptor

one_wire_file

Methods inherited from Receptor

#model_name, #name

Constructor Details

#initialize ⇒ TemperatureSensor

Returns a new instance of TemperatureSensor.



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# File 'lib/temperature_sensor.rb', line 7

def initialize
  @temperature = read_data
end

Instance Method Details

#celsius ⇒ Object 



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# File 'lib/temperature_sensor.rb', line 14

def celsius
  @temperature
end

#fahrenheit ⇒ Object 



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# File 'lib/temperature_sensor.rb', line 18

def fahrenheit
  @temperature * 9.0 / 5.0 + 32
end

#kelvin ⇒ Object 



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# File 'lib/temperature_sensor.rb', line 22

def kelvin
  @temperature + 273.15
end

#read_data ⇒ Object 



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

def read_data
  @temperature
end

#reaumur ⇒ Object 



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# File 'lib/temperature_sensor.rb', line 26

def reaumur
  @temperature * 0.8
end

#temperature(mode = :celsius) ⇒ Object 



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# File 'lib/temperature_sensor.rb', line 34

def temperature(mode=:celsius)
  case mode
  when :celsius
    celsius
  when :fahrenheit
    fahrenheit
  when :kelvin
    kelvin
  when :reaumur
    reaumur
  else
    celsius
  end
end

#to_s ⇒ Object 



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# File 'lib/temperature_sensor.rb', line 30

def to_s
  sprintf "%5.2f°C", @temperature
end