Class: Memopri::Printer

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

Instance Method Summary collapse

Constructor Details

#initialize(host, port = 16402) ⇒ Printer

Returns a new instance of Printer.



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# File 'lib/memopri/printer.rb', line 8

def initialize(host, port=16402)
  @hostname = host
  @port = port
  @socket = TCPSocket.open(@hostname, @port)
end

Instance Method Details

#_recv(len) ⇒ Object 



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# File 'lib/memopri/printer.rb', line 20

def _recv(len)
  return @socket.read(len)
end

#_send(cmd) ⇒ Object 



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# File 'lib/memopri/printer.rb', line 14

def _send(cmd)
  cmd = cmd.pack('C*')
  @socket.write(cmd)
  @socket.flush()
end

#print(data) ⇒ Object 



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# File 'lib/memopri/printer.rb', line 24

def print(data)
  cmd = [0x1b, 0x5a]
  _send(cmd)
  _recv(1)

  cmd = [0x05]
  _send(cmd)
  _recv(6)

  cmd = [0x06]
  _send(cmd)
  _recv(1)

  cmd = [0x1b, 0x49]
  _send(cmd)
  _recv(1)

  cmd = [0x05]
  _send(cmd)
  _recv(8)

  cmd = [0x06]
  _send(cmd)
  _recv(1)

  cmd = [0x1b, 0x50]
  _send(cmd)
  _recv(1)

  length = data.size

  cmd = [
    0x02, 0x80, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x02,
    0x80, 0x00,
    (length/16) & 0x00FF, ((length/16) >> 8) & 0x00FF,
    (length)    & 0x00FF, ((length)    >> 8) & 0x00FF,
    0x00, 0x00,
  ]
  _send(cmd)
  _recv(1)

  cmd = [0x1b, 0x56]
  _send(cmd)
  _recv(1)

  data.each_slice(64){|x|
    _send(x)
    _recv(1)
  }

  cmd = [0x1b, 0x42]
  _send(cmd)
  _recv(1)
end