NuttX-6.23
----------

The 90th release of NuttX, Version 6.23, was made on November 5, 2012,
and is available for download from the SourceForge website. Note
that release consists of two tarballs: nuttx-6.23.tar.gz and
apps-6.23.tar.gz. Both may be needed (see the top-level nuttx/README.txt
file for build information).

This release corresponds with SVN release number: r5313

Note that all SVN information has been stripped from the tarballs. If you
need the SVN configuration, you should check out directly from SVN. Revision
r5313 should equivalent to release 6.23 of NuttX 6.23:

svn checkout -r5313 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code

Or

svn checkout -r5313 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code

Additional new features and extended functionality:

* RTOS: If both atexit() and on_exit() are enabled, use on_exit() to
implement atexit(). Updates for RGMP 4.0.

* Binfmt: Add support for loading and executing ELF binary modules from
a file system.

* Drivers: Maxim MAX11802 touchscreen controller (Petteri Aimonen)

* STM32 Driver: Implementation of /dev/random using the STM32 Random Number
Generator (RNG).

* STM32 Boards: ADC support for the Shenzhou IV board. Relay support for
the Shenzhou IV board.

* C Library: Support is now included for the add-on uClibc++ C++
standard library support. This includes support for iostreams, strings,
STL, RTTI, exceptions -- the complete C++ environment. (uClibc++ is
provided as a separate add-on package due to licensing issues).

Optimized generic and ARM-specific memcpy() function. Optimized
memset() function.

Add support for ferror(), feof(), and clearerror(). Add support for
__cxa_atexit().

Math Library: Port of the math library from Rhombus OS by Nick Johnson
(Darcy Gong).

* Applications: New NSH commands: ifup, ifdown, urlencode, urldecode,
base64enc, bas64dec, md5 (Darcy Gong). Add support for NSH telnet login
(Darcy Gong). Enancements to NSH ping command to support pinging hosts
with very long round-trip times. Extensions to the ifconfig command
Darcy Gong),

Many extensions to the webclient/wget and DNS resolver logic from Darcy
Gong. JSON, Base64, URL encoding, and MD5 libraries contributed by Darcy
Gong.

New examples: ELF loader, JSON, wgetjson, cxxtest, relays.

Bugfixes (see the change log for details). Some of these are very important
(marked *critical*):

* Drivers: W25 SPI FLASH

* STM32 Drivers: ADC reset

* Graphics: Missing implementation of the blocked method (*critical*,
Petteri Aimonen).

* C Library: Floating point numbers in printf and related formatting functions
(Mike Smith), cf[get|set]speed() (Mike Smith)

As well as other, less critical bugs (see the ChangeLog for details)