Prep for 0.4.0 release
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1427 42af7a65-404d-4744-a932-0658087f49c3
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<tr align="center" bgcolor="#e4e4e4">
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<td>
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<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
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<p>Last Updated: December 4, 2008</p>
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<p>Last Updated: December 6, 2008</p>
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</table>
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</tr>
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</table>
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<p><b>nuttx-0.3.19</b>.
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The 31<sup>st</sup> release of NuttX (nuttx-0.3.19) is available for download
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<p><b>nuttx-0.4.0</b>.
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The 32<sup>nd</sup> release of NuttX (nuttx-0.4.10) is available for download
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from the <a href="http://sourceforge.net/project/showfiles.php?group_id=189573">SourceForge</a>
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website.
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The change log associated with the release is available <a href="#currentrelease">here</a>.
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Unreleased changes after this release are available in CVS.
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These unreleased changes are listed <a href="#pendingchanges">here</a>.
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</p>
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<p>
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This release includes the following new feature:
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<p>
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<ul>
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<li>Add <code>poll()</code> and <code>select()</code> APIs that may be used to monitor for data
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availability on character devices or TCP/IP sockets.
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</li>
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<li>Implemented support TCP/IP connection backlog.
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This allows <code>poll()</code>/<code>select()</code> to wake-up on new connections to a listener socket.
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</li>
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<li>Added definition of a framebuffer driver and implement framebuffer drivers for the
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simulated platform and the TI DM320 (untested as of the initial check-in).
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</li>
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<li>Partially developed a graphics framework based on the framebuffer drivers, however,
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this will not be ready for use for a few more release.
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Currently this includes only a few color conversion routines and some rasterizing functions.
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A tiny windowing system is under development but not ready for check-in yet.
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<li>Added support for fixed precision math.
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</li>
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<li>Added support for outgoing multicast packets.
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</li>
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</ul>
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<p>
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Several bugs were fixed, the most important of which are:
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This release adds graphics support and a tiny windowing subsystem.
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That new graphics subystem is documented in a <a href="NXGraphicsSubsystem.html">user manual</a>.
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No other substantial changes were made.
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</p>
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<li>Fixed an important bug in the TCP/IP buffering logic.
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When TCP/IP read-ahead is enabled and not recv() is in-place when a TCP/IP packet is received,
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the packet is placed into a read-ahead buffer.
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However, the old contents of the read-ahead buffer were not being cleared and old data would
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contaminate the newly received buffer.
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</li>
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<li>Changed the behavior of the serial driver read.
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It now returns data as it is available rather than waiting for the full requested read size.
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This makes functions like <code>fgetc()</code> work much more smoothly.
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</li>
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<p>
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These changes were verified only on the Neuros OSD (ARM) and the Linux simulator using a
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Linux development environment.
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The version number was bumped up to 0.4.0 in part to reflect the new graphics subsystem,
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but also to recognize the NuttX is approaching complete functionality. In the 0.3.x
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versions, network support was added, Pascal P-code runtime support was added, FAT and
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ROMFS filesystems were added, MMC/SD and USB device support were added. There were
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also numerous extensions to the NuttShell, NuttX APIs, and architecture ports.
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</p>
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<p>
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These changes were verified only on the NuttX simulation platform with X11 windows
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simulating a device framebuffer.
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Please report any errors to me.
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</p>
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@ -1274,30 +1250,16 @@ Other memory:
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</table>
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<pre><ul>
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nuttx-0.3.19 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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* Add poll() and select() APIs (in the initial check-in, these work only with character devices)
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* Add poll() methods to /dev/null, /dev/zero, pipes, fifos, and serial drivers.
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* Add examples/poll for testing poll() and select()
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* Fix hostile behavior of getc, fgetc, getchar, etc.: the serial driver was waiting for a
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full buffer of read data before return. This means that getc would stall when it needed
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to refill the input buffer. The old behavior (read full blocks) might be useful in other
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contexts, so it is still available within the driver as a configuration option.
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* Implement poll() and select() support for TCP/IP sockets
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* Fixed an important bug in the TCP/IP buffering logic. When TCP/IP read-ahead is enabled
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and not recv() is in-place when a TCP/IP packet is received, the packet is placed into
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a read-ahead buffer. However, the old contents of the read-ahead buffer were not being
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cleared and old data would contaminate the newly received buffer.
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* Implemented support for connection backlog. The size of the backlog is specified by the
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second argument of the standard listen() API. Hooks are provided to support poll()/select()
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waiting for connections, with a subsequent call to accept() to use the backlogged connection.
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* Fixed a minor bug in accept(). It should allow the address and addresslen values to be NULL
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* Added first-cut definition for a framebuffer interface (and simulated framebuffer for testing
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purposes only)
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* Added fixed precision math support
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* Added some color converson routines into what may become a real graphics library someday.
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* Added a framebuffer driver for the DM320 (untested on initial check-in)
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* Network: add support for outgoing multicast addresses
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* Added some rasterizers to the graphics library
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nuttx-0.4.0 2008-12-06 Gregory Nutt <spudmonkey@racsa.co.cr>
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* Initial release of a tiny windowing system for NuttX
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* Add fixed precision sin() and cos() (not well tested at initial check-in)
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* Add an X11-based simulated framebuffer driver
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* The simulated target now has an option (CONFIG_SIM_WALLTIME) that will let the simulation
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run in more-or-less realtime.
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* Added more more extensive window support: frames, toolbars, etc.
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* Added support for bitmap fonts
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* Integrated the new font support with a font test in examples/nx
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* Add documentation for NX graphics subsystem
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pascal-0.1.2 2008-02-10 Gregory Nutt <spudmonkey@racsa.co.cr>
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@ -1325,15 +1287,7 @@ buildroot-0.1.2 2007-11-06 <spudmonkey@racsa.co.cr>
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</table>
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<pre><ul>
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nuttx-0.3.20 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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* Initial release of a tiny windowing system for NuttX
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* Add fixed precision sin() and cos() (not well tested at initial check-in)
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* Add an X11-based simulated framebuffer driver
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* The simulated target now has an option (CONFIG_SIM_WALLTIME) that will let the simulation
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run in more-or-less realtime.
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* Added more more extensive window support: frames, toolbars, etc.
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* Added support for bitmap fonts
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* Integrated the new font support with a font test in examples/nx
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nuttx-0.4.1 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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pascal-0.1.3 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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