Class: Taopaipai::GPIO

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

Constant Summary collapse

BASE_PATH = 
'/sys/class/gpio'

Instance Method Summary collapse

Constructor Details

#initialize ⇒ GPIO

Returns a new instance of GPIO.



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# File 'lib/taopaipai/gpio.rb', line 6

def initialize
  @io = IO.new(BASE_PATH)
  @registry = {}
end

Instance Method Details

#pin(number, options = {}) ⇒ Object 



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# File 'lib/taopaipai/gpio.rb', line 11

def pin(number, options={})
  pin = @registry[pin_key(number)]
  if pin
    [:direction, :value].each do |option|
      pin.send option, options[option] if options.has_key?(option)
    end
    pin
  else
    @registry[pin_key(number)] = Pin.new(@io, options.merge(number: number)).apply!
  end
end

#release ⇒ Object 



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# File 'lib/taopaipai/gpio.rb', line 23

def release
  @registry.values.each do |pin|
    pin.unexport
  end
  @registry = {}
  self
end