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 = 116, tdoio = 124, tmsio = 6, tckio = 119) ⇒ Jtag

Returns a new instance of Jtag



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

def initialize(tdiio = 116, tdoio = 124, tmsio = 6, tckio = 119)
  @tdipin = Pin.new(tdiio, :out)
  @tdopin = Pin.new(tdoio, :in)
  @tmspin = Pin.new(tmsio, :out)
  @tckpin = Pin.new(tckio, :out)
  @tdoval = 0
  @tdostr = ''
  @verbose_enable = true
  @anytdofail = false
  @pins = {}
end

Instance Attribute Details

#anytdofail ⇒ Object

Returns the value of attribute anytdofail



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

def anytdofail
  @anytdofail
end

#tdoval ⇒ Object (readonly)

Returns the value of attribute tdoval



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

def tdoval
  @tdoval
end

#verbose_enable ⇒ Object

Returns the value of attribute verbose_enable



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

def verbose_enable
  @verbose_enable
end

Instance Method Details

#destroy ⇒ Object 



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

def destroy
  @tdipin.destroy
  @tdopin.destroy
  @tmspin.destroy
  @tckpin.destroy
  @tdipin = nil
  @tdopin = nil
  @tmspin = nil
  @tckpin = nil
  @pins.each_value(&:destroy)
end

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



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# File 'lib/origen_link/server/jtag.rb', line 34

def do_cycle(tdival, tmsval, capturetdo = false)
  @tdipin.out(tdival)
  @tmspin.out(tmsval)

  @tckpin.out(1)

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

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



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# File 'lib/origen_link/server/jtag.rb', line 115

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

  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 



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# File 'lib/origen_link/server/jtag.rb', line 87

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

  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 



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

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
  end
end

#do_tlr ⇒ Object 



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# File 'lib/origen_link/server/jtag.rb', line 46

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

#pause_dr ⇒ Object 



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# File 'lib/origen_link/server/jtag.rb', line 142

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 



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# File 'lib/origen_link/server/jtag.rb', line 153

def pause_ir
  do_cycle(0, 1)
  pause_dr
end

#processmessage(message) ⇒ Object 



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# File 'lib/origen_link/server/jtag.rb', line 190

def processmessage(message)
  message.strip!
  split_message = message.split(':')
  response = ''
  case split_message[0]
    when 'jtag_ir'
      args = split_message[1].split(',')
      do_ir(args[2].to_i, string_to_val(args[0], args[1]), capturetdo: true, suppresscomments: true)
      response = @tdoval.to_s(16)
    when 'jtag_dr'
      args = split_message[1].split(',')
      do_dr(args[2].to_i, string_to_val(args[0], args[1]), capturetdo: true, suppresscomments: true)
      response = @tdoval.to_s(16)
    when 'jtag_pause_dr'
      pause_dr
      response = 'done'
    when 'jtag_pause_ir'
      pause_ir
      response = 'done'
    when 'jtag_reset'
      do_tlr
      response = 'done'
    when 'jtag_pin_set'
      pinlist = split_message[1].split(',')
      pinlist.each do |pin|
        @pins[pin] = Pin.new(pin, :out) unless @pins.key?(pin)
        @pins[pin].out(1)
      end
      response = 'done'
    when 'jtag_pin_clear'
      pinlist = split_message[1].split(',')
      pinlist.each do |pin|
        @pins[pin] = Pin.new(pin, :out) unless @pins.key?(pin)
        @pins[pin].out(0)
      end
      response = 'done'
    when 'jtag_pin_read'
      pinlist = split_message[1].split(',')
      pinlist.each do |pin|
        @pins[pin] = Pin.new(pin, :in) unless @pins.key?(pin)
        response = response + @pins[pin].in
      end
      response
    when 'jtag_adc_read'
      response = read_adc(split_message[1])
      response
  end
end

#read_adc(csl) ⇒ Object 



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# File 'lib/origen_link/server/jtag.rb', line 158

def read_adc(csl)
  channel_list = csl.split(',')
  response = ''
  channel_list.each do |channel|
    file_name = '/sys/bus/iio/devices/'
    case channel
      when 'A0'
        file_name = file_name + 'iio:device0/in_voltage0_raw'
      when 'A1'
        file_name = file_name + 'iio:device0/in_voltage1_raw'
      when 'A2'
        file_name = file_name + 'iio:device0/in_voltage2_raw'
      when 'A3'
        file_name = file_name + 'iio:device0/in_voltage3_raw'
      when 'A4'
        file_name = file_name + 'iio:device1/in_voltage0_raw'
      when 'A5'
        file_name = file_name + 'iio:device1/in_voltage1_raw'
    end
    response = response + ',' unless response.size == 0
    if File.exist?(file_name)
      File.open(file_name, 'r') do |file|
        reading = file.gets
        response = response + reading.strip
      end
    else
      response = response + '-1'
    end
  end
  response
end

#string_to_val(base_indicator, numstr) ⇒ Object 



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# File 'lib/origen_link/server/jtag.rb', line 239

def string_to_val(base_indicator, numstr)
  case base_indicator
    when 'h'
      numstr.to_i(16)
    when 'd'
      numstr.to_i(10)
    when 'b'
      numstr.to_i(2)
  end
end