PageRenderTime 163ms CodeModel.GetById 105ms app.highlight 46ms RepoModel.GetById 4ms app.codeStats 1ms

/Src/Dependencies/Boost/boost/asio/basic_serial_port.hpp

http://hadesmem.googlecode.com/
C++ Header | 693 lines | 225 code | 47 blank | 421 comment | 3 complexity | 2549024ca57ded88472dcda126bef4fc MD5 | raw file
  1//
  2// basic_serial_port.hpp
  3// ~~~~~~~~~~~~~~~~~~~~~
  4//
  5// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  6// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.com)
  7//
  8// Distributed under the Boost Software License, Version 1.0. (See accompanying
  9// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 10//
 11
 12#ifndef BOOST_ASIO_BASIC_SERIAL_PORT_HPP
 13#define BOOST_ASIO_BASIC_SERIAL_PORT_HPP
 14
 15#if defined(_MSC_VER) && (_MSC_VER >= 1200)
 16# pragma once
 17#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 18
 19#include <boost/asio/detail/config.hpp>
 20
 21#if defined(BOOST_ASIO_HAS_SERIAL_PORT) \
 22  || defined(GENERATING_DOCUMENTATION)
 23
 24#include <string>
 25#include <boost/asio/basic_io_object.hpp>
 26#include <boost/asio/detail/handler_type_requirements.hpp>
 27#include <boost/asio/detail/throw_error.hpp>
 28#include <boost/asio/error.hpp>
 29#include <boost/asio/serial_port_base.hpp>
 30#include <boost/asio/serial_port_service.hpp>
 31
 32#include <boost/asio/detail/push_options.hpp>
 33
 34namespace boost {
 35namespace asio {
 36
 37/// Provides serial port functionality.
 38/**
 39 * The basic_serial_port class template provides functionality that is common
 40 * to all serial ports.
 41 *
 42 * @par Thread Safety
 43 * @e Distinct @e objects: Safe.@n
 44 * @e Shared @e objects: Unsafe.
 45 */
 46template <typename SerialPortService = serial_port_service>
 47class basic_serial_port
 48  : public basic_io_object<SerialPortService>,
 49    public serial_port_base
 50{
 51public:
 52  /// (Deprecated: Use native_handle_type.) The native representation of a
 53  /// serial port.
 54  typedef typename SerialPortService::native_handle_type native_type;
 55
 56  /// The native representation of a serial port.
 57  typedef typename SerialPortService::native_handle_type native_handle_type;
 58
 59  /// A basic_serial_port is always the lowest layer.
 60  typedef basic_serial_port<SerialPortService> lowest_layer_type;
 61
 62  /// Construct a basic_serial_port without opening it.
 63  /**
 64   * This constructor creates a serial port without opening it.
 65   *
 66   * @param io_service The io_service object that the serial port will use to
 67   * dispatch handlers for any asynchronous operations performed on the port.
 68   */
 69  explicit basic_serial_port(boost::asio::io_service& io_service)
 70    : basic_io_object<SerialPortService>(io_service)
 71  {
 72  }
 73
 74  /// Construct and open a basic_serial_port.
 75  /**
 76   * This constructor creates and opens a serial port for the specified device
 77   * name.
 78   *
 79   * @param io_service The io_service object that the serial port will use to
 80   * dispatch handlers for any asynchronous operations performed on the port.
 81   *
 82   * @param device The platform-specific device name for this serial
 83   * port.
 84   */
 85  explicit basic_serial_port(boost::asio::io_service& io_service,
 86      const char* device)
 87    : basic_io_object<SerialPortService>(io_service)
 88  {
 89    boost::system::error_code ec;
 90    this->get_service().open(this->get_implementation(), device, ec);
 91    boost::asio::detail::throw_error(ec, "open");
 92  }
 93
 94  /// Construct and open a basic_serial_port.
 95  /**
 96   * This constructor creates and opens a serial port for the specified device
 97   * name.
 98   *
 99   * @param io_service The io_service object that the serial port will use to
100   * dispatch handlers for any asynchronous operations performed on the port.
101   *
102   * @param device The platform-specific device name for this serial
103   * port.
104   */
105  explicit basic_serial_port(boost::asio::io_service& io_service,
106      const std::string& device)
107    : basic_io_object<SerialPortService>(io_service)
108  {
109    boost::system::error_code ec;
110    this->get_service().open(this->get_implementation(), device, ec);
111    boost::asio::detail::throw_error(ec, "open");
112  }
113
114  /// Construct a basic_serial_port on an existing native serial port.
115  /**
116   * This constructor creates a serial port object to hold an existing native
117   * serial port.
118   *
119   * @param io_service The io_service object that the serial port will use to
120   * dispatch handlers for any asynchronous operations performed on the port.
121   *
122   * @param native_serial_port A native serial port.
123   *
124   * @throws boost::system::system_error Thrown on failure.
125   */
126  basic_serial_port(boost::asio::io_service& io_service,
127      const native_handle_type& native_serial_port)
128    : basic_io_object<SerialPortService>(io_service)
129  {
130    boost::system::error_code ec;
131    this->get_service().assign(this->get_implementation(),
132        native_serial_port, ec);
133    boost::asio::detail::throw_error(ec, "assign");
134  }
135
136#if defined(BOOST_ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
137  /// Move-construct a basic_serial_port from another.
138  /**
139   * This constructor moves a serial port from one object to another.
140   *
141   * @param other The other basic_serial_port object from which the move will
142   * occur.
143   *
144   * @note Following the move, the moved-from object is in the same state as if
145   * constructed using the @c basic_serial_port(io_service&) constructor.
146   */
147  basic_serial_port(basic_serial_port&& other)
148    : basic_io_object<SerialPortService>(
149        BOOST_ASIO_MOVE_CAST(basic_serial_port)(other))
150  {
151  }
152
153  /// Move-assign a basic_serial_port from another.
154  /**
155   * This assignment operator moves a serial port from one object to another.
156   *
157   * @param other The other basic_serial_port object from which the move will
158   * occur.
159   *
160   * @note Following the move, the moved-from object is in the same state as if
161   * constructed using the @c basic_serial_port(io_service&) constructor.
162   */
163  basic_serial_port& operator=(basic_serial_port&& other)
164  {
165    basic_io_object<SerialPortService>::operator=(
166        BOOST_ASIO_MOVE_CAST(basic_serial_port)(other));
167    return *this;
168  }
169#endif // defined(BOOST_ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
170
171  /// Get a reference to the lowest layer.
172  /**
173   * This function returns a reference to the lowest layer in a stack of
174   * layers. Since a basic_serial_port cannot contain any further layers, it
175   * simply returns a reference to itself.
176   *
177   * @return A reference to the lowest layer in the stack of layers. Ownership
178   * is not transferred to the caller.
179   */
180  lowest_layer_type& lowest_layer()
181  {
182    return *this;
183  }
184
185  /// Get a const reference to the lowest layer.
186  /**
187   * This function returns a const reference to the lowest layer in a stack of
188   * layers. Since a basic_serial_port cannot contain any further layers, it
189   * simply returns a reference to itself.
190   *
191   * @return A const reference to the lowest layer in the stack of layers.
192   * Ownership is not transferred to the caller.
193   */
194  const lowest_layer_type& lowest_layer() const
195  {
196    return *this;
197  }
198
199  /// Open the serial port using the specified device name.
200  /**
201   * This function opens the serial port for the specified device name.
202   *
203   * @param device The platform-specific device name.
204   *
205   * @throws boost::system::system_error Thrown on failure.
206   */
207  void open(const std::string& device)
208  {
209    boost::system::error_code ec;
210    this->get_service().open(this->get_implementation(), device, ec);
211    boost::asio::detail::throw_error(ec, "open");
212  }
213
214  /// Open the serial port using the specified device name.
215  /**
216   * This function opens the serial port using the given platform-specific
217   * device name.
218   *
219   * @param device The platform-specific device name.
220   *
221   * @param ec Set the indicate what error occurred, if any.
222   */
223  boost::system::error_code open(const std::string& device,
224      boost::system::error_code& ec)
225  {
226    return this->get_service().open(this->get_implementation(), device, ec);
227  }
228
229  /// Assign an existing native serial port to the serial port.
230  /*
231   * This function opens the serial port to hold an existing native serial port.
232   *
233   * @param native_serial_port A native serial port.
234   *
235   * @throws boost::system::system_error Thrown on failure.
236   */
237  void assign(const native_handle_type& native_serial_port)
238  {
239    boost::system::error_code ec;
240    this->get_service().assign(this->get_implementation(),
241        native_serial_port, ec);
242    boost::asio::detail::throw_error(ec, "assign");
243  }
244
245  /// Assign an existing native serial port to the serial port.
246  /*
247   * This function opens the serial port to hold an existing native serial port.
248   *
249   * @param native_serial_port A native serial port.
250   *
251   * @param ec Set to indicate what error occurred, if any.
252   */
253  boost::system::error_code assign(const native_handle_type& native_serial_port,
254      boost::system::error_code& ec)
255  {
256    return this->get_service().assign(this->get_implementation(),
257        native_serial_port, ec);
258  }
259
260  /// Determine whether the serial port is open.
261  bool is_open() const
262  {
263    return this->get_service().is_open(this->get_implementation());
264  }
265
266  /// Close the serial port.
267  /**
268   * This function is used to close the serial port. Any asynchronous read or
269   * write operations will be cancelled immediately, and will complete with the
270   * boost::asio::error::operation_aborted error.
271   *
272   * @throws boost::system::system_error Thrown on failure.
273   */
274  void close()
275  {
276    boost::system::error_code ec;
277    this->get_service().close(this->get_implementation(), ec);
278    boost::asio::detail::throw_error(ec, "close");
279  }
280
281  /// Close the serial port.
282  /**
283   * This function is used to close the serial port. Any asynchronous read or
284   * write operations will be cancelled immediately, and will complete with the
285   * boost::asio::error::operation_aborted error.
286   *
287   * @param ec Set to indicate what error occurred, if any.
288   */
289  boost::system::error_code close(boost::system::error_code& ec)
290  {
291    return this->get_service().close(this->get_implementation(), ec);
292  }
293
294  /// (Deprecated: Use native_handle().) Get the native serial port
295  /// representation.
296  /**
297   * This function may be used to obtain the underlying representation of the
298   * serial port. This is intended to allow access to native serial port
299   * functionality that is not otherwise provided.
300   */
301  native_type native()
302  {
303    return this->get_service().native_handle(this->get_implementation());
304  }
305
306  /// Get the native serial port representation.
307  /**
308   * This function may be used to obtain the underlying representation of the
309   * serial port. This is intended to allow access to native serial port
310   * functionality that is not otherwise provided.
311   */
312  native_handle_type native_handle()
313  {
314    return this->get_service().native_handle(this->get_implementation());
315  }
316
317  /// Cancel all asynchronous operations associated with the serial port.
318  /**
319   * This function causes all outstanding asynchronous read or write operations
320   * to finish immediately, and the handlers for cancelled operations will be
321   * passed the boost::asio::error::operation_aborted error.
322   *
323   * @throws boost::system::system_error Thrown on failure.
324   */
325  void cancel()
326  {
327    boost::system::error_code ec;
328    this->get_service().cancel(this->get_implementation(), ec);
329    boost::asio::detail::throw_error(ec, "cancel");
330  }
331
332  /// Cancel all asynchronous operations associated with the serial port.
333  /**
334   * This function causes all outstanding asynchronous read or write operations
335   * to finish immediately, and the handlers for cancelled operations will be
336   * passed the boost::asio::error::operation_aborted error.
337   *
338   * @param ec Set to indicate what error occurred, if any.
339   */
340  boost::system::error_code cancel(boost::system::error_code& ec)
341  {
342    return this->get_service().cancel(this->get_implementation(), ec);
343  }
344
345  /// Send a break sequence to the serial port.
346  /**
347   * This function causes a break sequence of platform-specific duration to be
348   * sent out the serial port.
349   *
350   * @throws boost::system::system_error Thrown on failure.
351   */
352  void send_break()
353  {
354    boost::system::error_code ec;
355    this->get_service().send_break(this->get_implementation(), ec);
356    boost::asio::detail::throw_error(ec, "send_break");
357  }
358
359  /// Send a break sequence to the serial port.
360  /**
361   * This function causes a break sequence of platform-specific duration to be
362   * sent out the serial port.
363   *
364   * @param ec Set to indicate what error occurred, if any.
365   */
366  boost::system::error_code send_break(boost::system::error_code& ec)
367  {
368    return this->get_service().send_break(this->get_implementation(), ec);
369  }
370
371  /// Set an option on the serial port.
372  /**
373   * This function is used to set an option on the serial port.
374   *
375   * @param option The option value to be set on the serial port.
376   *
377   * @throws boost::system::system_error Thrown on failure.
378   *
379   * @sa SettableSerialPortOption @n
380   * boost::asio::serial_port_base::baud_rate @n
381   * boost::asio::serial_port_base::flow_control @n
382   * boost::asio::serial_port_base::parity @n
383   * boost::asio::serial_port_base::stop_bits @n
384   * boost::asio::serial_port_base::character_size
385   */
386  template <typename SettableSerialPortOption>
387  void set_option(const SettableSerialPortOption& option)
388  {
389    boost::system::error_code ec;
390    this->get_service().set_option(this->get_implementation(), option, ec);
391    boost::asio::detail::throw_error(ec, "set_option");
392  }
393
394  /// Set an option on the serial port.
395  /**
396   * This function is used to set an option on the serial port.
397   *
398   * @param option The option value to be set on the serial port.
399   *
400   * @param ec Set to indicate what error occurred, if any.
401   *
402   * @sa SettableSerialPortOption @n
403   * boost::asio::serial_port_base::baud_rate @n
404   * boost::asio::serial_port_base::flow_control @n
405   * boost::asio::serial_port_base::parity @n
406   * boost::asio::serial_port_base::stop_bits @n
407   * boost::asio::serial_port_base::character_size
408   */
409  template <typename SettableSerialPortOption>
410  boost::system::error_code set_option(const SettableSerialPortOption& option,
411      boost::system::error_code& ec)
412  {
413    return this->get_service().set_option(
414        this->get_implementation(), option, ec);
415  }
416
417  /// Get an option from the serial port.
418  /**
419   * This function is used to get the current value of an option on the serial
420   * port.
421   *
422   * @param option The option value to be obtained from the serial port.
423   *
424   * @throws boost::system::system_error Thrown on failure.
425   *
426   * @sa GettableSerialPortOption @n
427   * boost::asio::serial_port_base::baud_rate @n
428   * boost::asio::serial_port_base::flow_control @n
429   * boost::asio::serial_port_base::parity @n
430   * boost::asio::serial_port_base::stop_bits @n
431   * boost::asio::serial_port_base::character_size
432   */
433  template <typename GettableSerialPortOption>
434  void get_option(GettableSerialPortOption& option)
435  {
436    boost::system::error_code ec;
437    this->get_service().get_option(this->get_implementation(), option, ec);
438    boost::asio::detail::throw_error(ec, "get_option");
439  }
440
441  /// Get an option from the serial port.
442  /**
443   * This function is used to get the current value of an option on the serial
444   * port.
445   *
446   * @param option The option value to be obtained from the serial port.
447   *
448   * @param ec Set to indicate what error occured, if any.
449   *
450   * @sa GettableSerialPortOption @n
451   * boost::asio::serial_port_base::baud_rate @n
452   * boost::asio::serial_port_base::flow_control @n
453   * boost::asio::serial_port_base::parity @n
454   * boost::asio::serial_port_base::stop_bits @n
455   * boost::asio::serial_port_base::character_size
456   */
457  template <typename GettableSerialPortOption>
458  boost::system::error_code get_option(GettableSerialPortOption& option,
459      boost::system::error_code& ec)
460  {
461    return this->get_service().get_option(
462        this->get_implementation(), option, ec);
463  }
464
465  /// Write some data to the serial port.
466  /**
467   * This function is used to write data to the serial port. The function call
468   * will block until one or more bytes of the data has been written
469   * successfully, or until an error occurs.
470   *
471   * @param buffers One or more data buffers to be written to the serial port.
472   *
473   * @returns The number of bytes written.
474   *
475   * @throws boost::system::system_error Thrown on failure. An error code of
476   * boost::asio::error::eof indicates that the connection was closed by the
477   * peer.
478   *
479   * @note The write_some operation may not transmit all of the data to the
480   * peer. Consider using the @ref write function if you need to ensure that
481   * all data is written before the blocking operation completes.
482   *
483   * @par Example
484   * To write a single data buffer use the @ref buffer function as follows:
485   * @code
486   * serial_port.write_some(boost::asio::buffer(data, size));
487   * @endcode
488   * See the @ref buffer documentation for information on writing multiple
489   * buffers in one go, and how to use it with arrays, boost::array or
490   * std::vector.
491   */
492  template <typename ConstBufferSequence>
493  std::size_t write_some(const ConstBufferSequence& buffers)
494  {
495    boost::system::error_code ec;
496    std::size_t s = this->get_service().write_some(
497        this->get_implementation(), buffers, ec);
498    boost::asio::detail::throw_error(ec, "write_some");
499    return s;
500  }
501
502  /// Write some data to the serial port.
503  /**
504   * This function is used to write data to the serial port. The function call
505   * will block until one or more bytes of the data has been written
506   * successfully, or until an error occurs.
507   *
508   * @param buffers One or more data buffers to be written to the serial port.
509   *
510   * @param ec Set to indicate what error occurred, if any.
511   *
512   * @returns The number of bytes written. Returns 0 if an error occurred.
513   *
514   * @note The write_some operation may not transmit all of the data to the
515   * peer. Consider using the @ref write function if you need to ensure that
516   * all data is written before the blocking operation completes.
517   */
518  template <typename ConstBufferSequence>
519  std::size_t write_some(const ConstBufferSequence& buffers,
520      boost::system::error_code& ec)
521  {
522    return this->get_service().write_some(
523        this->get_implementation(), buffers, ec);
524  }
525
526  /// Start an asynchronous write.
527  /**
528   * This function is used to asynchronously write data to the serial port.
529   * The function call always returns immediately.
530   *
531   * @param buffers One or more data buffers to be written to the serial port.
532   * Although the buffers object may be copied as necessary, ownership of the
533   * underlying memory blocks is retained by the caller, which must guarantee
534   * that they remain valid until the handler is called.
535   *
536   * @param handler The handler to be called when the write operation completes.
537   * Copies will be made of the handler as required. The function signature of
538   * the handler must be:
539   * @code void handler(
540   *   const boost::system::error_code& error, // Result of operation.
541   *   std::size_t bytes_transferred           // Number of bytes written.
542   * ); @endcode
543   * Regardless of whether the asynchronous operation completes immediately or
544   * not, the handler will not be invoked from within this function. Invocation
545   * of the handler will be performed in a manner equivalent to using
546   * boost::asio::io_service::post().
547   *
548   * @note The write operation may not transmit all of the data to the peer.
549   * Consider using the @ref async_write function if you need to ensure that all
550   * data is written before the asynchronous operation completes.
551   *
552   * @par Example
553   * To write a single data buffer use the @ref buffer function as follows:
554   * @code
555   * serial_port.async_write_some(boost::asio::buffer(data, size), handler);
556   * @endcode
557   * See the @ref buffer documentation for information on writing multiple
558   * buffers in one go, and how to use it with arrays, boost::array or
559   * std::vector.
560   */
561  template <typename ConstBufferSequence, typename WriteHandler>
562  void async_write_some(const ConstBufferSequence& buffers,
563      BOOST_ASIO_MOVE_ARG(WriteHandler) handler)
564  {
565    // If you get an error on the following line it means that your handler does
566    // not meet the documented type requirements for a WriteHandler.
567    BOOST_ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
568
569    this->get_service().async_write_some(this->get_implementation(),
570        buffers, BOOST_ASIO_MOVE_CAST(WriteHandler)(handler));
571  }
572
573  /// Read some data from the serial port.
574  /**
575   * This function is used to read data from the serial port. The function
576   * call will block until one or more bytes of data has been read successfully,
577   * or until an error occurs.
578   *
579   * @param buffers One or more buffers into which the data will be read.
580   *
581   * @returns The number of bytes read.
582   *
583   * @throws boost::system::system_error Thrown on failure. An error code of
584   * boost::asio::error::eof indicates that the connection was closed by the
585   * peer.
586   *
587   * @note The read_some operation may not read all of the requested number of
588   * bytes. Consider using the @ref read function if you need to ensure that
589   * the requested amount of data is read before the blocking operation
590   * completes.
591   *
592   * @par Example
593   * To read into a single data buffer use the @ref buffer function as follows:
594   * @code
595   * serial_port.read_some(boost::asio::buffer(data, size));
596   * @endcode
597   * See the @ref buffer documentation for information on reading into multiple
598   * buffers in one go, and how to use it with arrays, boost::array or
599   * std::vector.
600   */
601  template <typename MutableBufferSequence>
602  std::size_t read_some(const MutableBufferSequence& buffers)
603  {
604    boost::system::error_code ec;
605    std::size_t s = this->get_service().read_some(
606        this->get_implementation(), buffers, ec);
607    boost::asio::detail::throw_error(ec, "read_some");
608    return s;
609  }
610
611  /// Read some data from the serial port.
612  /**
613   * This function is used to read data from the serial port. The function
614   * call will block until one or more bytes of data has been read successfully,
615   * or until an error occurs.
616   *
617   * @param buffers One or more buffers into which the data will be read.
618   *
619   * @param ec Set to indicate what error occurred, if any.
620   *
621   * @returns The number of bytes read. Returns 0 if an error occurred.
622   *
623   * @note The read_some operation may not read all of the requested number of
624   * bytes. Consider using the @ref read function if you need to ensure that
625   * the requested amount of data is read before the blocking operation
626   * completes.
627   */
628  template <typename MutableBufferSequence>
629  std::size_t read_some(const MutableBufferSequence& buffers,
630      boost::system::error_code& ec)
631  {
632    return this->get_service().read_some(
633        this->get_implementation(), buffers, ec);
634  }
635
636  /// Start an asynchronous read.
637  /**
638   * This function is used to asynchronously read data from the serial port.
639   * The function call always returns immediately.
640   *
641   * @param buffers One or more buffers into which the data will be read.
642   * Although the buffers object may be copied as necessary, ownership of the
643   * underlying memory blocks is retained by the caller, which must guarantee
644   * that they remain valid until the handler is called.
645   *
646   * @param handler The handler to be called when the read operation completes.
647   * Copies will be made of the handler as required. The function signature of
648   * the handler must be:
649   * @code void handler(
650   *   const boost::system::error_code& error, // Result of operation.
651   *   std::size_t bytes_transferred           // Number of bytes read.
652   * ); @endcode
653   * Regardless of whether the asynchronous operation completes immediately or
654   * not, the handler will not be invoked from within this function. Invocation
655   * of the handler will be performed in a manner equivalent to using
656   * boost::asio::io_service::post().
657   *
658   * @note The read operation may not read all of the requested number of bytes.
659   * Consider using the @ref async_read function if you need to ensure that the
660   * requested amount of data is read before the asynchronous operation
661   * completes.
662   *
663   * @par Example
664   * To read into a single data buffer use the @ref buffer function as follows:
665   * @code
666   * serial_port.async_read_some(boost::asio::buffer(data, size), handler);
667   * @endcode
668   * See the @ref buffer documentation for information on reading into multiple
669   * buffers in one go, and how to use it with arrays, boost::array or
670   * std::vector.
671   */
672  template <typename MutableBufferSequence, typename ReadHandler>
673  void async_read_some(const MutableBufferSequence& buffers,
674      BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
675  {
676    // If you get an error on the following line it means that your handler does
677    // not meet the documented type requirements for a ReadHandler.
678    BOOST_ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
679
680    this->get_service().async_read_some(this->get_implementation(),
681        buffers, BOOST_ASIO_MOVE_CAST(ReadHandler)(handler));
682  }
683};
684
685} // namespace asio
686} // namespace boost
687
688#include <boost/asio/detail/pop_options.hpp>
689
690#endif // defined(BOOST_ASIO_HAS_SERIAL_PORT)
691       //   || defined(GENERATING_DOCUMENTATION)
692
693#endif // BOOST_ASIO_BASIC_SERIAL_PORT_HPP