Class: Delcom::SignalIndicator

Inherits:
Object
  • Object
show all
Defined in:
lib/delcom_904006.rb

Constant Summary collapse

FLASH_N = 
10
FLASH_DURATION = 
0.3
COLORS = 
{
  :off       => "\x00",
  :green     => "\x01",
  :red       => "\x02",
  :yellow    => "\x03",
  :blue      => "\x04",
  :bluegreen => "\x05",
  :purple    => "\x06",
  :white     => "\x07"
}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(device_number = 0) ⇒ SignalIndicator

Returns a new instance of SignalIndicator.



37
38
39
 
# File 'lib/delcom_904006.rb', line 37

def initialize(device_number=0)
  @device = self.class.devices[device_number]
end

Class Method Details

.devices ⇒ Object 



31
32
33
34
35
 
# File 'lib/delcom_904006.rb', line 31

def self.devices
  @devices ||= USB.devices.select {|device| device.idVendor == VENDOR_ID && device.idProduct == PRODUCT_ID}.tap { |devices|
    raise "Unable to find delcom device(s)" unless devices
  }
end

Instance Method Details

#flash(color, options) ⇒ Object 



41
42
43
44
45
46
47
48
49
50
 
# File 'lib/delcom_904006.rb', line 41

def flash(color, options)
  p n        = options[:n]        || FLASH_N
  p duration = options[:duration] || FLASH_DURATION
  (1..n).each {
    send(color)
    sleep duration
    off
    sleep duration
  }
end