Class: ObjectOrientedBeagleboneBlack::Gpio

Inherits:
Object
  • Object
show all
Defined in:
lib/object_oriented_beaglebone_black/gpio.rb

Instance Method Summary collapse

Constructor Details

#initialize(pin_number) ⇒ Gpio

Returns a new instance of Gpio.



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 4

def initialize(pin_number)
  @pin_number = pin_number
  @gpio_directory = File.join(OBJECT_ORIENTED_BEAGLEBONE_BLACK_CONFIG["io_root_directory"], "gpio")
end

Instance Method Details

#direction ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 21

def direction
  # Using this instead of simple "File.open(file_path).read" in order to close file after reading.
  direction = nil
  File.open(File.join(@gpio_directory, "gpio#{@pin_number}", "direction"), "r") { |file| direction = file.read.strip }
  direction
end

#direction=(direction) ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 17

def direction=(direction)
  File.open(File.join(@gpio_directory, "gpio#{@pin_number}", "direction"), "w") { |file| file.write(direction) }
end

#export ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 9

def export
  File.open(File.join(@gpio_directory, "export"), "w") { |file| file.write(@pin_number) }
end

#unexport ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 13

def unexport
  File.open(File.join(@gpio_directory, "unexport"), "w") { |file| file.write(@pin_number) }
end

#value ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 32

def value
  # Using this instead of simple "File.open(file_path).read" in order to close file after reading.
  value = nil
  File.open(File.join(@gpio_directory, "gpio#{@pin_number}", "value"), "r") { |file| value = file.read.strip.to_i }
  value
end

#value=(value) ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/gpio.rb', line 28

def value=(value)
  File.open(File.join(@gpio_directory, "gpio#{@pin_number}", "value"), "w") { |file| file.write(value) }
end