Class: NFC::Reader

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

Overview

}}}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tty = "/dev/ttyUSB0") ⇒ Reader

{{{



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# File 'lib/nfc.rb', line 81

def initialize(tty = "/dev/ttyUSB0") #{{{
  @reader = NFC.nfc_reader_init(tty)
  @thread = nil
  @serialnr = nil
  command('x')

 #     begin
 #       @serialnr = command('b')
 #     end while @serialnr == nil
 #     @serialnr = @serialnr.unpack("C*").map{|e| "%02x" % e}.join
  Signal::trap("INT") do
    puts 'stopping...'
    if @thread
      stop_poll
      @thread.kill
    end
  end
end

Instance Attribute Details

#reader ⇒ Object (readonly)

Returns the value of attribute reader.



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# File 'lib/nfc.rb', line 79

def reader
  @reader
end

#serialnr ⇒ Object (readonly)

Returns the value of attribute serialnr.



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# File 'lib/nfc.rb', line 80

def serialnr
  @serialnr
end

Instance Method Details

#command(cmd) ⇒ Object

}}}



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# File 'lib/nfc.rb', line 100

def command( cmd) #{{{
  obj = Struct.new(@reader)
  temp = nil
  while temp.nil? do
    NFC.nfc_set_cmd(@reader,cmd)
    NFC.nfc_reader_do(@reader)
    if (obj[:reddit].read_string(obj[:reddit_len])[3..-3]== nil)
      temp = nil
    else
      temp=Result.new(obj[:reddit].read_string(obj[:reddit_len])[3..-3])
    end
    temp = true if cmd=='x'
  end
  temp
end

#command_print(cmd) ⇒ Object

}}}



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# File 'lib/nfc.rb', line 116

def command_print(cmd) #{{{
  obj = Struct.new(@reader)
  NFC.nfc_set_cmd(@reader,cmd)
  NFC.nfc_reader_do(@reader)
  if (obj[:reddit].read_string(obj[:reddit_len])[3..-3]== nil)
    temp = nil
  else
    temp=Result.new(obj[:reddit].read_string(obj[:reddit_len])[3..-3])
  end
  p temp
end

#poll(&bl) ⇒ Object

}}}



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# File 'lib/nfc.rb', line 134

def poll(&bl) #{{{
  pr = Proc.new do |obj|
    obj = Struct.new(@reader)
    bl.call(Result.new(obj[:reddit].read_string(obj[:reddit_len])[3..-3]))
  end
  NFC.nfc_reader_on_tag(@reader,pr)
  command('dp')
  NFC.nfc_reader_poll(@reader)
  @thread = Thread.new { Thread::stop }
  @thread.join
end

#read_once ⇒ Object

}}}



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# File 'lib/nfc.rb', line 128

def read_once #{{{
  NFC.nfc_reader_1_read(@reader)
end

#stop_poll ⇒ Object

}}}



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# File 'lib/nfc.rb', line 131

def stop_poll #{{{
  NFC.nfc_reader_stop_poll(@reader)
end