Class: Time7Segment

Inherits:
Object
  • Object
show all
Defined in:
lib/time7segment.rb

Instance Method Summary collapse

Constructor Details

#initialize(gpio = %w(22 27 17 24 11 4 23 8 20 10 18 25),, refresh: 0.005) ⇒ Time7Segment

d1 d2 d3 d4 a b c d e f g dp



31
32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/time7segment.rb', line 31

def initialize(gpio=%w(22 27 17 24 11 4 23 8 20 10 18 25), refresh: 0.005)

  pins = SimpleRaspberryPi.new(gpio).pins
  @digits, @segments, @refresh = pins.take(4), pins.slice(4..-1), refresh
  
  a = [0x7E, 0x30, 0x6D, 0x79, 0x33, 0x5B, 0x5F, 0x70, 0x7F, 0x7B]
  
  @numerals = a.map do |x|
    x.to_s(2).rjust(7,'0').chars.map {|x| x == '1' ? :off : :on }
  end
  
end

Instance Method Details

#start ⇒ Object 



44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'lib/time7segment.rb', line 44

def start

  loop do

    Time.now.strftime("%H%M").chars.each.with_index do |x,i|
      
      n = x.to_i
      display(n); @segments[7].method( i == 1 ? :off : :on).call
      @digits[i].on

      refresh = @refresh
      
      # reduce the sleep time for digit 1 since it takes less time to 
      # update the segments. This gives a more balanced brightness display,
      # especially for digits 0 and 8

      refresh -= refresh / 2 if n == 1
      sleep refresh

      @digits[i].off

    end

  end

end