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========================
 pySerial Release Notes
========================

Version 1.0     13 Feb 2002
---------------------------
- First public release.
- Split from the pybsl application (see http://mspgcc.sourceforge.net)

New Features:

- Added Jython support

Version 1.1     14 Feb 2002
---------------------------
Bugfixes:

- Win32, when not specifying a timeout
- Typos in the Docs

New Features:

- added ``serialutil`` which provides a base class for the ``Serial``
  objects.

- ``readline``, ``readlines``, ``writelines`` and ``flush`` are now supported
  see README.txt for deatils.

Version 1.11    14 Feb 2002
---------------------------
Same as 1.1 but added missing files.

Version 1.12    18 Feb 2002
---------------------------
Removed unneded constants to fix RH7.x problems.

Version 1.13    09 Apr 2002
---------------------------
Added alternate way for enabling rtscts (CNEW_RTSCTS is tried too)
If port opening fails, a ``SerialException`` is raised on all platforms

Version 1.14    29 May 2002
---------------------------
Added examples to archive
Added non-blocking mode for ``timeout=0`` (tnx Mat Martineau)

Bugfixes:

- win32 does now return the remaining characters on timeout

Version 1.15    04 Jun 2002
---------------------------
Bugfixes (win32):

- removed debug messages
- compatibility to win9x improved

Version 1.16    02 Jul 2002
---------------------------
Added implementation of RI and corrected RTS/CTS on Win32

Version 1.17    03 Jul 2002
---------------------------
Silly mix of two versions in win32 code corrected

Version 1.18    06 Dec 2002
---------------------------
Bugfixes (general):

- remove the mapping of flush to the destructive flushOutput as
  this is not the expected behaviour.
- readline: EOL character for lines can be chosen idea by 
  John Florian.

Bugfixes (posix):

- cygwin port numbering fixed
- test each and every constant for it's existence in termios module,
  use default if not existent (fix for Bug item #640214)
- wrong exception on nonexistent ports with /dev file. bug report
  by Louis Cordier

Bugfixes (win32):

- RTS/CTS handling as suggested in Bug #635072
- bugfix of timeouts brought up by Markus Hoffrogge

Version 1.19    19 Mar 2003
---------------------------
Bugfixes (posix):

- removed ``dgux`` entry which actually had a wrong comment and is
  probably not in use anywhere.

Bugfixes (win32):

- added ``int()`` conversion, [Bug 702120]
- remove code to set control lines in close method of win32
  version. [Bug 669625]

Version 1.20    28 Aug 2003
---------------------------
- Added ``serial.device()`` for all platforms

Bugfixes (win32):

- don't recreate overlapped structures and events on each
  read/write.
- don't set unneeded event masks.
- dont use DOS device names for ports > 9.
- remove send timeout (its not used in the linux impl. anyway).

Version 1.21    30 Sep 2003
---------------------------
Bugfixes (win32):

- name for COM10 was not built correctly, found by Norm Davis.

Bugfixes (examples):

- small change in ``miniterm.py`` that should mage it run on cygwin,
  [Bug 809904] submitted by Rolf Campbell.

Version 2.0b1    1 Oct 2003
---------------------------
Transition to the Python 2.0 series:

- New implementation only supports Python 2.2+, backwards compatibility
  should be maintained almost everywhere.
  The OS handles (like the ``hComPort`` or ``fd`` attribute) were prefixed
  with an underscore. The different names stay, as anyone that uses one of
  these has to write platform specific code anyway.
- Common base class ``serialutil.SerialBase`` for all implementations.
- ``PARITY_NONE``, ``PARITY_EVEN``, ``PARITY_ODD`` constants changed and all
  these constants moved to ``serialutil.py`` (still available as
  ``serial.PARITY_NONE`` etc. and they should be used that way)
- Added ``serial.PARITY_NAMES`` (implemented in ``serialutil.PARITY_NAMES``).
  This dictionary can be used to convert parity constants to meaningful
  strings.
- Each Serial class and instance has a list of supported values:
  ``BAUDRATES``, ``BYTESIZES``, ``PARITIES``, ``STOPBITS``Ggg
  (i.e. ``serial.Serial.BAUDRATES or s = serial.Serial; s.BAUDRATES``)
  these values can be used to fill in value sin GUI dialogs etc.
- Creating a ``Serial()`` object without port spec returns an unconfigured,
  closed port. Useful if a GUI dialog should take a port and configure
  it.
- New methods for ``serial.Serial`` instances: ``open()``, ``isOpen()``
- A port can be opened and closed as many times as desired.
- Instances of ``serial.Serial`` have ``baudrate``, ``bytesize``, ``timeout``
  etc. attributes implemented as properties, all can be set while the port is
  opened. It will then be reconfigured.
- Improved ``__doc__``'s.
- New ``test_advanced.py`` for the property setting/getting testing.
- Small bugfix on posix with get* methods (return value should be true a
  boolean).
- added a ``__repr__`` that returns a meaningful string will all the serial
  setting, easy for debugging.
- The serialposix module does not throw an exception on unsupported
  platforms, the message is still printed. The idea that it may still
  work even if the platform itself s not known, it simply tries to do
  the posix stuff anyway (It's likely that opening ports by number
  fails, but by name it should work).

Version 2.0b2    4 Oct 2003
---------------------------
- Added serial port configuration dialog for wxPython to the examples.
- Added terminal application for wxPython with wxGlade design file
  to the examples.
- Jython support is currently broken as Jython does not have a Python 2.2
  compatible release out yet

Version 2.0      6 Nov 2003
---------------------------
- Fixes ``setup.py`` for older distutils

Version 2.1     28 Jul 2004
---------------------------
Bugfixes:

- Fix XON/XOFF values [Bug 975250]

Bugfixes (posix):

- ``fd == 0`` fix from Vsevolod Lobko
- netbsd fixes from Erik Lindgren
- Dynamicaly lookup baudrates and some cleanups

Bugfixes (examples):

- CRLF handling of ``miniterm.py`` should be more consistent on Win32
  and others. Added LF only command line option
- Multithreading fixes to ``wxTerminal.py`` (helps with wxGTK)
- Small change for wxPython 2.5 in ``wxSerialConfigDialog.py`` [Bug 994856]

New Features:

- Implement write timeouts (``writeTimeout`` parameter)

Version 2.2     31 Jul 2005
---------------------------
Bugfixes:

- [Bug 1014227]: property <del> broken
- [Bug 1105687]: ``serial_tcp_example.py``: ``--localport`` option
- [Bug 1106313]: device (port) strings cannot be unicode

Bugfixes (posix):

- [Patch 1043436] Fix for [Bug 1043420] (OSError: EAGAIN)
- [Patch 1102700] ``fileno()`` added
- ensure disabled PARMRK

Bugfixes (win32):

- [Patch 983106]: keep RTS/CTS state on port setting changes

New Features:

- ``dsrdtr`` setting to enable/disable DSR/DTR flow control independently
  from the ``rtscts`` setting. (Currenly Win32 only, ignored on other
  platforms)

Version 2.3     19 Jun 2008
---------------------------
New Features:

- iterator interface. ``for line in Serial(...): ...`` is now possible
  Suggested by Bernhard Bender
- ``sendBreak()`` accepts a ``duration`` argument. Default duration increased.
- win32 handles \\.\COMx format automatically for com ports of higher number
  (COM10 is internally translated to \\.\COM10 etc.)
- miniterm.py has a new feature to send a file (upload) and configurable
  special characters for exit and upload. Refactored internals to class based
  structure (upload and class refactoring by Colin D Bennett)

Bugfixes:

- [Bug 1451535] TCP/serial redirect example "--help"
- update VERSION variable
- update wxSerialConfigDialog.py and wxTerminal.py compatibility with
  wxPython 2.8 (Peleg)
- Check for string in write function. Using unicode causes errors, this
  helps catching errors early (Tom Lynn)

Bugfixes (posix):

- [Bug 1554183] setRTS/setDTR reference to non existing local "on"
- [Bug 1513653] file descriptor not closed when exception is thrown
- FreeBSD now uses cuadX instead of cuaaX (Patrick Phalen)

Bugfixes (win32):

- [Bug 1520357] Handle leak
- [Bug 1679013] Ignore exception raised by SetCommTimeout() in close().
- [Bug 1938118] process hang forever under XP

Version 2.4      6 Jul 2008
---------------------------
New Features:

- [Patch 1616790] pyserial: Add inter-character timeout feature
- [Patch 1924805] add a setBreak function
- Add mark/space parity
- Add .NET/Mono backend (IronPython)

Bugfixes (posix):

- [Bug 1783159] Arbitrary baud rates (Linux/Posix)

Bugfixes (win32):

- [Patch 1561423] Add mark/space parity, Win32
- [Bug 2000771] serial port CANNOT be specified by number on windows
- examples/scanwin32.py does no longer return \\.\ names
- fix \\.\ handling for some cases

Bugfixes (jython):

- The Jython backend tries javax.comm and gnu.io (Seo Sanghyeon)

Version 2.5-rc1  2009-07-30
---------------------------
New Features:

- Python 3.x support (through 2to3)
- compatible with Python io library (Python 2.6+)
- Support for Win32 is now written on the top of ctypes (bundled with
  Python 2.5+) instead of pywin32 (patch by Giovanni Bajo).
- 1.5 stop bits (STOPBITS_ONE_POINT_FIVE, implemented on all platforms)
- miniterm application extended (CTRL+T -> menu)
- miniterm.py is now installed as "script"
- add scanlinux.py example
- add port_publisher example
- experimental RFC-2217 server support (examples/rfc2217_server.py)
- add ``getSettingsDict`` and ``applySettingsDict`` serial object methods
- use a ``poll`` based implementation on Posix, instead of a ``select`` based,
  provides better error handling [removed again in later releases].

Bugfixes:

- Improve and fix tcp_serial_redirector example.
- [Bug 2603052] 5-bit mode (needs 1.5 stop bits in some cases)

Bugfixes (posix):

- [Bug 2810169] Propagate exceptions raised in serialposix _reconfigure
- [Bug 2562610] setting non standard baud rates on Darwin (Emmanuel Blot)

Bugfixes (win32):

- [Bug 2469098] parity PARITY_MARK, PARITY_SPACE isn't supported on win32
- [SF  2446218] outWaiting implemented
- [Bug 2392892] scanwin32.py better exception handling
- [Bug 2505422] scanwin32.py Vista 64bit compatibility

Version 2.5-rc2  2010-01-02
---------------------------
New Features:

- Documentation update, now written with Sphinx/ReST
- Updated miniterm.py example
- experimental RFC-2217 client support (serial.rfc2217.Serial, see docs)
- add ``loop://`` device for testing.
- add ``serial.serial_for_url`` factory function (support for native ports and
  ``rfc2217``, ``socket`` and ``loop`` URLs)
- add new example: ``rfc2217_server.py``
- tests live in their own directory now (no longer in examples)

Bugfixes:

- [Bug 2915810] Fix for suboption parsing in rfc2217
- Packaging bug (missed some files)

Bugfixes (posix):

- improve write timeout behavior
- [Bug 2836297] move Linux specific constants to not break other platforms
- ``poll`` based implementation for ``read`` is in a separate class
  ``PosixPollSerial``, as it is not supported well on all platforms (the
  default ``Serial`` class uses select).
- changed error handling in ``read`` so that disconnected devices are
  detected.

Bugfixes (win32):

- [Bug 2886763] hComPort doesn't get initialized for Serial(port=None)

Version 2.5      2010-07-22
---------------------------
New Features:

- [Bug 2976262] dsrdtr should default to False
  ``dsrdtr`` parameter default value changed from ``None`` (follow ``rtscts``
  setting) to ``False``. This means ``rtscts=True`` enables hardware flow
  control on RTS/CTS but no longer also on DTR/DSR. This change mostly
  affects Win32 as on other platforms, that setting was ignored anyway.
- Improved xreadlines, it is now a generator function that yields lines as they
  are received (previously it called readlines which would only return all
  lines read after a read-timeout). However xreadlines is deprecated an not
  available when the io module is used. Use ``for line in Serial(...):``
  instead.

Bugfixes:

- [Bug 2925854] test.py produces exception with python 3.1
- [Bug 3029812] 2.5rc2 readline(s) doesn't work

Bugfixes (posix):

- [BUG 3006606] Nonblocking error - Unix platform

Bugfixes (win32):

- [Bug 2998169] Memory corruption at faster transmission speeds.
  (bug introduced in 2.5-rc1)

Version 2.6      2011-11-02
---------------------------
New Features:

- Moved some of the examples to serial.tools so that they can be used
  with ``python -m``
- serial port enumeration now included as ``serial.tools.list_ports``
- URL handers for ``serial_for_url`` are now imported dynamically. This allows
  to add protocols w/o editing files. The list
  ``serial.protocol_handler_packages`` can be used to add or remove user
  packages with protocol handlers (see docs for details).
- new URL type: hwgrep://<regexp> uses list_ports module to search for ports
  by their description
- serveral internal changes to improve Python 3.x compatibility (setup.py,
  use of absolute imports and more)

Bugfixes:

- [Bug 3093882] calling open() on an already open port now raises an exception
- [Bug 3245627] connection-lost let rfc2217 hangs in closed loop
- [Patch 3147043] readlines() to support multi-character eol

Bugfixes (posix):

- [Patch 3316943] Avoid unneeded termios.tcsetattr calls in serialposix.py
- [Patch 2912349] Serial Scan as a Module with Mac Support

Bugfixes (win32):

- [Bug 3057499] writeTimeoutError when write Timeout is 0
- [Bug 3414327] Character out of range in list_ports_windows
- [Patch 3036175] Windows 98 Support fix
- [Patch 3054352] RTS automatic toggle, for RS485 functionality.
- Fix type definitions for 64 bit Windows compatibility

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