Class: OrigenLink::Server::Jtag

Inherits:
Object
  • Object
show all
Defined in:
lib/origen_link/server/jtag.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tdiio = 16, tdoio = 23, tmsio = 19, tckio = 26, tck_period = 0.000001) ⇒ Jtag

Returns a new instance of Jtag.



10
11
12
13
14
15
16
17
18
19
20
 
# File 'lib/origen_link/server/jtag.rb', line 10

def initialize(tdiio = 16, tdoio = 23, tmsio = 19, tckio = 26, tck_period = 0.000001)
  @tdipin = Pin.new(tdiio, :out)
  @tdopin = Pin.new(tdoio, :in)
  @tmspin = Pin.new(tmsio, :out)
  @tckpin = Pin.new(tckio, :out)
  @tck_half_period = tck_period / 2
  @tdoval = 0
  @tdostr = ''
  @verbose_enable = true
  @anytdofail = false
end

Instance Attribute Details

#anytdofail ⇒ Object

Returns the value of attribute anytdofail.



8
9
10
 
# File 'lib/origen_link/server/jtag.rb', line 8

def anytdofail
  @anytdofail
end

#tdoval ⇒ Object (readonly)

Returns the value of attribute tdoval.



6
7
8
 
# File 'lib/origen_link/server/jtag.rb', line 6

def tdoval
  @tdoval
end

#verbose_enable ⇒ Object

Returns the value of attribute verbose_enable.



7
8
9
 
# File 'lib/origen_link/server/jtag.rb', line 7

def verbose_enable
  @verbose_enable
end

Instance Method Details

#destroy ⇒ Object 



26
27
28
29
30
31
32
33
34
35
 
# File 'lib/origen_link/server/jtag.rb', line 26

def destroy
  @tdipin.destroy
  @tdopin.destroy
  @tmspin.destroy
  @tckpin.destroy
  @tdipin = nil
  @tdopin = nil
  @tmspin = nil
  @tckpin = nil
end

#do_cycle(tdival, tmsval, capturetdo = false) ⇒ Object 



37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/origen_link/server/jtag.rb', line 37

def do_cycle(tdival, tmsval, capturetdo = false)
  @tdipin.out(tdival)
  @tmspin.out(tmsval)
  sleep @tck_half_period
  @tckpin.out(1)
  sleep @tck_half_period

  if capturetdo
    @tdostr = @tdopin.in + @tdostr
  end
  @tckpin.out(0)
end

#do_dr(numbits, value, options = {}) ⇒ Object 



133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
 
# File 'lib/origen_link/server/jtag.rb', line 133

def do_dr(numbits, value, options = {})
  defaults = {
    capturetdo:	      true,
    suppresscomments:	false,
    tdocompare:	      ''
  }
  options = defaults.merge(options)
  if !(options[:suppresscomments]) && @verbose_enable
    puts "	shift DR, #{numbits} bits, value = 0x" + value.to_s(16)
  end

  if options[:tdocompare] != ''
    capturetdo = true
  else
    capturetdo = options[:tdocompare]
  end

  # Assume starting from run test idle
  # Advance to shift DR
  do_cycle(0, 1)
  do_cycle(0, 0)
  do_cycle(0, 0)

  do_shift(numbits, value, capturetdo, options[:suppresscomments], options[:tdocompare])

  # Return to run test idle
  do_cycle(0, 1)
  do_cycle(0, 0)
end

#do_ir(numbits, value, options = {}) ⇒ Object 



101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/origen_link/server/jtag.rb', line 101

def do_ir(numbits, value, options = {})
  defaults = {
    capturetdo:	      false,
    suppresscomments:	false,
    tdocompare:	      ''
  }
  options = defaults.merge(options)

  if !(options[:suppresscomments]) && @verbose_enable
    puts "	shift IR, #{numbits} bits, value = 0x" + value.to_s(16)
  end

  if options[:tdocompare] != ''
    capturetdo = true
  else
    capturetdo = options[:capturetdo]
  end

  # Assume starting from run test idle
  # Advance to shift IR
  do_cycle(0, 1)
  do_cycle(0, 1)
  do_cycle(0, 0)
  do_cycle(0, 0)

  do_shift(numbits, value, capturetdo, options[:suppresscomments], options[:tdocompare])

  # Return to run test idle
  do_cycle(0, 1)
  do_cycle(0, 0)
end

#do_shift(numbits, value, capturetdo = false, suppresscomments = false, tdocompare = '') ⇒ Object 



55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/origen_link/server/jtag.rb', line 55

def do_shift(numbits, value, capturetdo = false, suppresscomments = false, tdocompare = '')
  @tdoval = 0
  @tdostr = ''
  (numbits - 1).times do |bit|
    do_cycle(value[bit], 0, capturetdo)
  end
  do_cycle(value[numbits - 1], 1, capturetdo)

  @tdoval = @tdostr.to_i(2) if capturetdo

  if !(suppresscomments) && @verbose_enable && capturetdo
    puts 'TDO output = 0x' + @tdoval.to_s(16)
  end

  if capturetdo && tdocompare != ''
    thiscomparefail = false
    numbits.times do |bit|
      if tdocompare[numbits - 1 - bit] == 'H'
        compareval = 1
      elsif tdocompare[numbits - 1 - bit] == 'L'
        compareval = 0
      else
        compareval = @tdoval[bit]
      end

      if @tdoval[bit] != compareval
        @anytdofail = true
        thiscomparefail = true
      end
    end

    tdovalstr = @tdoval.to_s(2)
    tdovalstr = '0' * (numbits - tdovalstr.length) + tdovalstr

    if thiscomparefail
      puts '****************************>>>>>>>>>>>>>>>>> TDO failure <<<<<<<<<<<<<<<<<<****************************'
      puts 'expected: ' + tdocompare
      puts 'received: ' + tdovalstr
    else
      puts 'TDO compare pass'
      puts 'expected: ' + tdocompare
      puts 'received: ' + tdovalstr
    end
  end
end

#do_tlr ⇒ Object 



50
51
52
53
 
# File 'lib/origen_link/server/jtag.rb', line 50

def do_tlr
  8.times { do_cycle(0, 1) }
  do_cycle(0, 0)
end

#pause_dr ⇒ Object 



163
164
165
166
167
168
169
170
171
172
 
# File 'lib/origen_link/server/jtag.rb', line 163

def pause_dr
  do_cycle(0, 1)
  do_cycle(0, 0)
  do_cycle(0, 0)
  do_cycle(0, 1)
  do_cycle(0, 0)
  do_cycle(0, 1)
  do_cycle(0, 1)
  do_cycle(0, 0)
end

#pause_ir ⇒ Object 



174
175
176
177
 
# File 'lib/origen_link/server/jtag.rb', line 174

def pause_ir
  do_cycle(0, 1)
  pause_dr
end

#tck_period=(value) ⇒ Object 



22
23
24
 
# File 'lib/origen_link/server/jtag.rb', line 22

def tck_period=(value)
  @tck_half_period = value / 2
end