Class: Knipper::Device

Inherits:
Object
  • Object
show all
Defined in:
lib/knipper/device.rb

Constant Summary collapse

@@lib = 
nil

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path = nil, &block) ⇒ Device

Returns a new instance of Device.



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# File 'lib/knipper/device.rb', line 22

def initialize(path = nil, &block)
  @@lib ||= Blink1Lib.new
  if path
    @device = @@lib.blink1_openByPath path
  else
    @device = @@lib.blink1_open
  end
  if block_given?
    yield self
    @@lib.blink1_close @device
    return
  end
end

Class Method Details

.device_present? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/knipper/device.rb', line 18

def self.device_present?
  devices.length > 0
end

.devices ⇒ Object 



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# File 'lib/knipper/device.rb', line 6

def self.devices
  @@lib ||= Blink1Lib.new
  
  num_devices = @@lib.blink1_enumerate
  devices = []
  num_devices.times do |i|
    devices << @@lib.blink1_getCachedPath(i)
  end unless num_devices < 1
  
  devices
end

Instance Method Details

#clear_pattern ⇒ Object 



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# File 'lib/knipper/device.rb', line 67

def clear_pattern
  12.times do |i|
    write_pattern_line 0, 0, 0, 0, i
  end
end

#close ⇒ Object 



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# File 'lib/knipper/device.rb', line 36

def close
  @@lib.blink1_close @device
end

#fade_to_rgb(millis, red, green, blue) ⇒ Object 



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# File 'lib/knipper/device.rb', line 40

def fade_to_rgb(millis, red, green, blue)
  @@lib.blink1_fadeToRGB(@device, millis, red, green, blue)
end

#read_pattern_line(pos) ⇒ Object 



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# File 'lib/knipper/device.rb', line 52

def read_pattern_line(pos)
  millis = FFI::MemoryPointer.new(:ushort)
  r = FFI::MemoryPointer.new(:uchar)
  g = FFI::MemoryPointer.new(:uchar)
  b = FFI::MemoryPointer.new(:uchar)
  @@lib.blink1_readPatternLine(@device, millis, r, g, b, pos)
  
  Knipper::Pattern::PatternLine.new({
    millis: millis.read_uint16, 
    red: r.read_uint8,
    green: g.read_uint8,
    blue: b.read_uint8
  })
end

#set_rgb(red, green, blue) ⇒ Object 



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# File 'lib/knipper/device.rb', line 44

def set_rgb(red, green, blue)
  @@lib.blink1_setRGB(@device, red, green, blue)
end

#start_pattern(pos) ⇒ Object 



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# File 'lib/knipper/device.rb', line 87

def start_pattern(pos)
  @@lib.blink1_play(@device, 1, pos)
end

#stop_pattern ⇒ Object 



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# File 'lib/knipper/device.rb', line 91

def stop_pattern
  @@lib.blink1_play(@device, 0, 0)
end

#write_pattern(pattern, clear = true) ⇒ Object 



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# File 'lib/knipper/device.rb', line 73

def write_pattern(pattern, clear=true)
  if pattern.is_a? String
    pattern = Knipper::Pattern::Pattern.parse(pattern)
  end
  
  if pattern.is_a? Knipper::Pattern::Pattern
    clear_pattern if clear
    
    pattern.lines.each do |pattern_line|
      write_pattern_line pattern_line.millis, pattern_line.red, pattern_line.green, pattern_line.blue, pattern.lines.index(pattern_line)
    end
  end
end

#write_pattern_line(millis, red, green, blue, pos) ⇒ Object 



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# File 'lib/knipper/device.rb', line 48

def write_pattern_line(millis, red, green, blue, pos)
  @@lib.blink1_writePatternLine(@device, millis, red, green, blue, pos)
end