Class: ObjectOrientedBeagleboneBlack::Led

Inherits:
Object
  • Object
show all
Includes:
IO, PinMappings
Defined in:
lib/object_oriented_beaglebone_black/led.rb

Constant Summary collapse

LED_RELATIVE_DIRECTORY_PATTERN = 
"leds/beaglebone:green:%s"
TRIGGER_FILENAME = 
"trigger"
GPIO_FILENAME = 
"brightness"

Instance Method Summary collapse

Methods included from IO

#read_from_io_file, #write_to_io_file

Methods included from PinMappings

#load_pin_index_array, #property_hash

Constructor Details

#initialize(led_name) ⇒ Led

Returns a new instance of Led.



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# File 'lib/object_oriented_beaglebone_black/led.rb', line 10

def initialize(led_name)
  @led_name = led_name
end

Instance Method Details

#digital_write(state) ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/led.rb', line 23

def digital_write(state)
  write_to_io_file(GPIO_FILENAME, state)
end

#pin_mode=(pin_mode) ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/led.rb', line 14

def pin_mode=(pin_mode)
  case pin_mode
  when "out"
    write_to_io_file(TRIGGER_FILENAME, "gpio")
  else
    raise "Invalid pin_mode for Led: #{pin_mode}. Must be 'out'"
  end
end

#state ⇒ Object 



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# File 'lib/object_oriented_beaglebone_black/led.rb', line 27

def state
  state = read_from_io_file(GPIO_FILENAME)
  begin
    state.to_i
  rescue
    state
  end
end