From 648ce59ee4cea41c84e756fcd1e618c7fa27ac88 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Fri, 15 Mar 2013 18:07:34 +0000
Subject: [PATCH] Prep for 6.26 release

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5745 42af7a65-404d-4744-a932-0658087f49c3
---
 Documentation/NuttX.html | 1277 ++++++++++++++++----------------------
 1 file changed, 524 insertions(+), 753 deletions(-)

diff --git a/Documentation/NuttX.html b/Documentation/NuttX.html
index 3d3782ab6a..d7b797e83a 100644
--- a/Documentation/NuttX.html
+++ b/Documentation/NuttX.html
@@ -8,7 +8,7 @@
   <tr align="center" bgcolor="#e4e4e4">
     <td>
       <h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
-      <p>Last Updated: March 4, 2013</p>
+      <p>Last Updated: March 15, 2013</p>
     </td>
   </tr>
 </table>
@@ -1064,30 +1064,29 @@
   </tr>
 </table>
 
-<h2>nuttx-6.25 Release Notes</h2>
+<h2>NuttX-6.26 Release Notes</h2>
 <p>
-  The 92<sup>nd</sup> release of NuttX, Version 6.25, was made on February 1, 2013, and is available for download from the
+  The 93<sup>rd</sup> release of NuttX, Version 6.26, was made on March 15, 2013, and is available for download from the
   <a href="http://sourceforge.net/projects/nuttx/files/">SourceForge</a> website.
-  Note that the release consists of two tarballs:  <code>nuttx-6.25.tar.gz</code> and <code>apps-6.25.tar.gz</code>.
+  Note that the release consists of two tarballs:  <code>nuttx-6.26.tar.gz</code> and <code>apps-6.26.tar.gz</code>.
   Both may be needed (see the top-level <code>nuttx/README.txt</code> file for build information)
   The change log associated with the release is available <a href="#currentrelease">here</a>.
   Unreleased changes after this release are available in SVN.
   These unreleased changes are also listed <a href="#pendingchanges">here</a>.
 </p>
 <p>
-  This release corresponds with SVN release number: r5595,
+  This release corresponds with SVN release number: r5745,
   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 r5595 should equivalent to release 6.25 of NuttX:
+  Revision r5745 should equivalent to release 6.26 of NuttX:
 </p>
 <ul><pre>
-svn checkout -r5595 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
+svn checkout -r5745 svn://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
 </pre></ul>
 <p>Or (HTTP):</p>
 <ul><pre>
-svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
+svn checkout -r5745 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
 </pre></ul>
-
 <p>
   <b>Additional new features and extended functionality</b>
 </p>
@@ -1098,103 +1097,68 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Removed support for <code>CONFIG_BUILTIN_APP_START</code>. 
-        This is not really a useful feature and creates a violation of the OS layered architecture.
+        Add an additional call-out to support board-specific driver initialization during the boot-up phase (available with <code>CONFIG_BOARD_INITIALIZE=y</code>).
     </ul>
   </li>
   <li>
     <p>
-      <b>Task Creation</b>
+      <b>Tasking</b>
     </p>
     <ul>
       <li>
-        Implement a simple <code>vfork()</code>).
-        In NuttX-6.25, this interface is available only for ARM7/9, ARMv7-M (Cortext-M3/4), and MIPS32 (PIC32MX) platforms.
+        New interface <code>task_spawn()</code> that is like <code>posix_spawn()</code>, but uses entry point addresses like <code>ask_create()</code>.
       </li>
       <li>
-        <code>exec()</code> now sets the priority of the new task to the same priority as the parent task (instead of the arbirtrary value of 50).
+        Additional data restructuring as a continuation of the <i>task group</i> changes of NuttX 6.25.
+        These data structures were moved from the TCB structure into the task group:
+        pthread join data, <code>atexit</code>/<code>on_exit</code> callbacks, <code>waitpid</code>data structures, message queues.
       </li>
       <li>
-        New, partially complient implementations of <code>execv()</code> and <code>execl()</code>.
-        These are only partially compliant because they do not overlay any existing &quot;process space&quot; but rather create the new task and <code>exit()</code>.
-      </li>
-      <li>
-        Add a complete implementation of <code>posix_spawn()</code>.
-        This standard interface is a better match for an MMU-less architecture than are <code>vfork()</code>) plus <code>execv()</code> or <code>execl()</code>.
-      </li>
-      <li>
-        Add a task start hook that will be called before the task main executes.
-        This can be used, for example, to schedule C++ static constructors to run automatically in the context of the new task.
+        TCBs for tasks and pthreads are now separate structures.
+        This saves a little memory since tasks do not have to carry the overhead for threads and vice versa.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>Task Parentage</b>
+      <b>Kernel Build</b>
     </p>
     <ul>
       <li>
-        Repartitioned tasking data structures.
-        All shared resources are now collected together in a &quot;task group&quot;. 
-        A &quot;task group&quot; includes the resource for the original task that are shared with all of the <code>pthreads</code> created by the task.
+        Extensive changes were made to support the kernel build mode.
+        In this mode, NuttX is built as a monolithic kernel.
+        NuttX is built as a separate kernel mode &quot;blob&quot; and the applications are built as a separate user mode &quot;blob&quot;.
+        The kernel runs in kernel mode and the applications run in user mode (with the MPU restricting user
+        mode accesses).
+        Access to the kernel from the user blob is only via system calls (<i>SVCalls</i>).
       </li>
       <li>
-        Added support for remember the parent &quot;task group&quot; when a new task is started.
+        Extensive changes were made to the syscall, SVCall, and trapping logic.
+        Many internal interfaces were renamed.
       </li>
       <li>
-        Added optional support to record the membership of each thread in the &quot;task group&quot;.
+        The memory manager was extended to support both kernel- and user-mode allocations.
+        Logic within the kernel needs to use the correct kernel- or user-space allocator, depending upon the user of the allocated memory.
       </li>
       <li>
-        Implement support for retaining child task status in the &quot;task group&quot; after the child task exists.
-        This is behavior required by POSIX.
-        But in NuttX is only enabled with <code>CONFIG_SCHED_HAVE_PARENT</code> and <code>CONFIG_SCHED_CHILD_STATUS</code>.
+        The user-space blob now contains a header built in at the beginning of the block that provides the same information that was previously provided by a kludgy, auto-generated header file (<code>user_map.h</code>).
       </li>
       <li>
-        Add internal logic to &quot;reparent&quot; a task.
-        This is useful, for example, where the child task is created through a trampoline task that redirects I/O.
-        Reparenting allows the caller of <code>posix_spawn()</code> to be reparented for the eventual child thread.
+        Basic support implemented for the ARMv7-M family with fragments also implemetned for the ARMv6-M and MIPS32 families.
       </li>
       <li>
-        Added support for <code>SIGCHLD</code>.
-        Sent to all members of the parent &quot;task group&quot; when the finall member of the child task group exits.
-      </li>
-      <li>
-        If <code>SIGCHLD</code> and retention of child task exist status are enabled, then a more spec-compliant version of <code>waitpid()</code> is enabled.
-      </li>
-      <li>
-        New interfaces <code>waitid()</code> and <code>wait()</code> are also enabled when <code>SIGCHLD</code> is enabled.
+        Kernel build supported added for the LPC17xx Open1788 and for the Atmel SAM3U-EK board.
+        All testing is being performed on the Open1788 board.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>File System</b>
+      <b>Signals</b>
     </p>
     <ul>
       <li>
-        <code>dup()</code> and <code>dup2()</code> can new be used with opened files in a mounted file system.
-        This supports re-direction of output in NSH to files.
-      </li>
-      <li>
-        The <code>binfs</code> file system was moved from <code>apps/builtin</code> to <code>fs/binfs</code>.
-        The <code>binfs</code> file system was extended to support execution of &quot;builtin applications&quot; using <code>exec()</code>, <code>execv()</code>, <code>execl()</code>, or <code>posix_spawn()</code>.
-      </li>
-      <li>
-        Added logic based on <code>SIGCHLD</code> to automatically unload and clean-up after running a task that was loaded into memory.
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>Binary Formats</b>
-    </p>
-    <ul>
-      <li>
-        Much of the logic for &quot;builtin applications&quot; was moved from <code>apps/builtin</code> to <code>nuttx/binfmt/libbuiltin</code>.
-        Includes some extensions contributed by Mike Smith.
-      </li>
-      <li>
-        A binary loader was added for builtin applications to support execution of &quot;builtin applications&quot; using <code>exec()</code>, <code>execv()</code>, <code>execl()</code>, or <code>posix_spawn()</code>.
+        Delivery of signals to threads within a task group is now compatible with the way that signals are delivered to threads within a process.
       </li>
     </ul>
   </li>
@@ -1204,44 +1168,95 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Added logic to marshal and serialized &quot;out-of-band&quot; keyboard commands (such as cursor controls and key release events) intermixed with normal ASCII keypress data.
-        The encoding is partially integrated in the HID keyboard driver and the decoding is fully integrated into the <code>apps/examples</code> <code>hidkbd/</code> and <code>keypadtest/</code> (the latter contributed by Denis Carlikli).
+        Add a driver for the SST29VF NOR FLASH parts.
       </li>
       <li>
-        Driver for the UG-2864HSWEG01 OLED contributed by Darcy Gong.
+        USB device trace/debug feature extended to decode device-specific trace events to make the trace output more readable (from Petteri Aimonen).
       </li>
       <li>
-        Add support for removable serial devices (like USB serial).
-        This support is enabled by <code>CONFIG_SERIAL_REMOVABLE</code>.
+        USB MSC device driver can not support names of differing sizes in the USB descriptor and the SCSI fields (from Petteri Aimonen).
+      </li>
+      <li>
+        Locking added to MMC/SD SPI drivers so that MMC/SD can co-exist on the same bus as other SPI devices.
+        Frequency is reset each time that the MMC/SD SPI has the bus locked. (from Petteri Aimonen).
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>ARMv7-M</b>
+      <b>ARMv6-M (Cortex-M0)</b>
     </p>
     <ul>
       <li>
-        Added an option to use the <code>BASEPRI</code> register to disable interrupts (instead of the <code>PRIMASK</code> register).
-        This eliminates some innocuous hardfaults that interfere with some debug tools.
-        You need to switch to the <code>BASEPRI</code> method only if you have such tool interference.
+        Added support for the ARM Cortex-M0 family.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>STM32 Drivers</b>
+      <b>nuvoTon NUC120</b>
     </p>
     <ul>
       <li>
-        Bring STM32 F1 DMA capabilities up to par with the STM32 F2/F4 (contributed by Mike Smith).
+        Added support for the nuvoTon NUC120 MCU (Cortex-M0).
+      </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>nuvoTon NUC120 Boards</b>
+    </p>
+    <ul>
+      <li>
+        Added basic support for the nuvoTon NuTiny-SDK-NUC120 board (Cortex-M0).
+      </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>LPC17xx</b>
+    </p>
+    <ul>
+      <li>
+        Added support for the LPC177x and LPC178x families.
+        Most of this is the work of Rommel Marcelo.
+      </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>LPC17xx Boards</b>
+    </p>
+    <ul>
+      <li>
+        Added support for Zilogic System's ARM development Kit, ZKIT-ARM-1769.
+        From Rashid.
       </li>
       <li>
-        Add support for USART single wire mode (Contributed by the PX4 team).
+        The port for the WaveShare Open1788 board is now functional.
+        Basic OS test and NuttShell (NSH) configurations are functional.
+        More driver development and testing is needed (from Rommel Marcelo).
       </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>LPC17xx Drivers</b>
+    </p>
+    <ul>
       <li>
-        Updates to support for SPI DMA on the STM32 F1/F2/F4.
-        From Petteri Aimonen.
+        Added an SD card MSI driver for the LPC178x.
+        The driver is marginally functional but requires DMA capability to be reliable.
+      </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>STM32</b>
+    </p>
+    <ul>
+      <li>
+        Support extended to handle the STM32 F3 family (Cortex-M4 with F1-like peripherals).
       </li>
     </ul>
   </li>
@@ -1251,78 +1266,27 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        New configuration to support the UG-2864HSWEG01 OLED on the STM32F4Discovery board.
-      </li>
-      <li>
-        Added a <code>posix_spawn()</code> test configuration for the STM32F4Discovery.
+        Added support the STMicro STM32F3Discovery board (STM32 F3).
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>LM3S/LM4F</b>
+      <b>Stellaris LM3S/LM4F</b>
     </p>
     <ul>
       <li>
-        Files and directories repartitioned to support both LM3S and LM4F using the STM32 organization as a model.
-      </li>
-      <li>
-        Partial definitions for the LM4F contributed by Jose Pablo Carballo (this is still a work in progress).
+        Basic support for the LM4F120 family is in place, but untested (mostly from Jose Pablo Carballo).
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>LM3S Boards</b>
+      <b>Stellaris LM4F Boards</b>
     </p>
     <ul>
       <li>
-        Added scripts and documentation to use OpenOCD with the LM3S (from Jose Pablo Carballo).
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>LPC176x/LPC178x</b>
-    </p>
-    <ul>
-      <li>
-        Files and directories repartitioned to support both LPC175x/LPC176x and the LPC177x/LPC178x families using the STM32 organization as a model.
-        The LPC1788 port is a work in progress by Rommel Marcelo.
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>LPC176x/LPC178x Boards</b>
-    </p>
-    <ul>
-      <li>
-        Added a configuration to support the Wave Share Open1788 board.
-        This is still a work in progress by Rommel Marcelo.
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>LPC2148 Boards</b>
-    </p>
-    <ul>
-      <li>
-        Add basic support for the The0.net ZP213x/4xPA board (with the LPC2148 and the UG_2864AMBAG01 OLED).
-      </li>
-      <li>
-        Add an nxlines configuration for the ZP213x/4xPA (with the LPC2148 and the UG_2864AMBAG01).
-       </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>Simulator</b>
-    </p>
-    <ul>
-      <li>
-        Add an nxlines configuration for the simulator.
+        Add support for the LM4F120 LaunchPad (untested).
       </li>
     </ul>
   </li>
@@ -1332,32 +1296,23 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Add logic to work around delayed ACKs by splitting packets (contributed by Yan T.).
-      </li>
-      <li>
-        Split <code>net_poll()</code> to create the internal interface <code>psock_poll()</code>.
+        <code>select()</code> should now allocate a little less memory.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>LCDs</b>
+      <b>Memory Management</b>
     </p>
     <ul>
       <li>
-        Added support for LCD1602 alphanumeric LCD (HD4468OU controller).
+        Extended to support multiple heaps.
+        This is used as part of the kernel build in order to support separater user- and kernel-mode heaps.
       </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>Graphics</b>
-    </p>
-    <ul>
       <li>
-        Added 5x8 monospace font.
-        This tiny font is useful for graph labels and for small bitmapped display.
-        Contributed by Petteri Aimonen.
+        The stand-alone memory manger test had to be removed.
+        It was too entangled and made extension of the memory manager nearly impossible.
+        This is a loss.
       </li>
     </ul>
   </li>
@@ -1367,85 +1322,22 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Add an options to better manage toolchain prefixes.
-      </li>
-      <li>
-        Redesigned how the context targer works in the <code>apps/</code> directory.
-        The old design caused lots of problems when changing configurations because there is no easy way to get the system to rebuild the context.
-        This change should solve most the problems and eliminate questions like &quot;Why don't I see my builtin application in NSH?&quot;
+        Several configurations converted to use the <i>kconfig-frontends</i> configuration tool.
+        There are still many more that need to be converted.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>Kconfig Files</b>
+      <b>C Library</b>
     </p>
     <ul>
       <li>
-        <p>
-          There are several new configurations that use the kconfig-frontends tools and several older configurations that have been converted to use these tools.
-          There is still a long way to go before the conversion is complete:
-        </p>
-        <ul>
-          <li>
-            <code>configs/sim/nxwm</code>
-          </li>
-          <li>
-            <code>configs/sim/nsh</code>
-          </li>
-          <li>
-            <code>configs/stm3220g-eval/nxwm</code>
-          </li>
-          <li>
-            <code>configs/stm32f4discovery/posix_spawn</code>
-          </li>
-          <li>
-            <code>configs/olimex-lpc1766stk/nsh</code>
-          </li>
-          <li>
-            <code>configs/olimex-lpc1766stk/hidkbd</code>
-          </li>
-          <li>
-            <code>configs/olimex-lpc1766stk/nettest</code>
-          </li>
-          <li>
-            <code>configs/open1788/ostest</code>
-          </li>
-          <li>
-            <code>configs/stm32f4discovery/nsh</code>
-          </li>
-          <li>
-            <code>configs/stm32f4discovery/usbnsh</code>
-          </li>
-          <li>
-            <code>configs/lm326965-ek</code> (all configurations)
-          </li>
-          <li>
-            <code>configs/mcu123-214x/nsh</code>
-          </li>
-          <li>
-            <code>configs/ubw32/ostest</code>
-          </li>
-        </ul>
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>Tools</b>
-    </p>
-    <ul>
-      <li>
-        <code>tools/kconfig.bat</code>:  Kludge to run kconfig-frontends from a DOS shell.
+        Move the workqueue logic into the C library.
+        There is now a special user-space version of the work queue (which will only be used with a NuttX kernel build).
       </li>
       <li>
-        <code>tools/configure.c</code>:  <code>configure.c</code> can be used to build a work-alike program as a replacement for <code>configure.sh</code>.
-        This work-alike program would be used in environments that do not support Bash scripting (such as the Windows native environment).
-      </li>
-      <li>
-        <code>tools/configure.bat</code>: <code>configure.bat</code> is a small Windows batch file that can be used as a replacement for <code>configure.sh</code> in a Windows native environment.
-        <code>configure.bat</code> is actually just a thin layer that executes <code>configure.exe</code> if it is available.
-        If <code>configure.exe</code> is not available, then configure.bat will attempt to build it first (assumes the MinGW-GCC is available).
+        Implementation of <code>itoa()</code> contributed by Ryan Sundberg.
       </li>
     </ul>
   </li>
@@ -1455,50 +1347,58 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        New and modified examples:
-        <p>
-          <ul>
-            <li>
-              <code>apps/examples/wlan</code>: Remove non-functional example.
-            </li>
-            <li>
-              <code>apps/examples/ostest</code>: Added a test of <code>vfork()</code>).
-              Extend signal handler test to catch death-of-child signals (<code>SIGCHLD</code>).
-              Add a test for <code>waitpid()</code>, <code>waitid()</code>, and <code>wait()</code>.
-            </li>
-            <li>
-              <code>apps/exampes/posix_spawn</code>: Added a test of <code>posix_spawn()</code>.
-            </li>
-          </ul>
-        <p>
+        The NSH builtin task logic now uses <code>task_spawn()</code> to start builtin applications.
       </li>
       <li>
-        NSH:
-        <p>
-          <ul>
-            <li>
-              NSH now supports re-direction of I/O to files (but still not from).
-            </li>
-            <li>
-              The block driver source argument to the mount command is now optional for file systems that do not require a block driver.
-            </li>
-          </ul>
-        </p>
+        The OS test now includes a test cased to verify <code>task_restart()</code>.
       </li>
+    </ul>
+  </li>
+</ul>
+<p>
+  <b>Efforts In Progress</b>.
+  The following are features that are partially implemented but present in this release.
+  Most are expected to be fully available in NuttX 6.27.
+</p>
+<ul>
+  <li>
+    <p>
+      <b>LM4F120 LaunchPad port</b>
+    </p>
+    <ul>
       <li>
-        NSH can now execute a program from a file system using <code>posix_spawn()</code>.
+        Code is in place, but nothing has been tested.
       </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>WaveShare Open1788 port</b>
+    </p>
+    <ul>
       <li>
-        Added support for a login script.
-        The <code>init.d/rcS</code> script will be executed once when NSH starts;
-        the <code>.nshrc</code> script will be executed for each session:
-        Once for a serial console, once for each USB connection, and once for each Telnet session.
+        This port as actually complete and functional.
+        However, there is still ongoing development and testing of drivers.
       </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b>Kernel Build</b>
+    </p>
+    <ul>
       <li>
-        Supports a new daemon that can be used to monitor USB trace outpout.
+        Much progress has been made, but there kernel build is not yet fully functional due to several user resources that are not yet properly disentangled from the kernel blob.
       </li>
+    </ul>
+  </li>
+  <li>
+    <p>
+      <b><i>kconfig-frontends</i></b>
+    </p>
+    <ul>
       <li>
-        Removed non-functional <code>wlan</code> example.
+        Conversion of old configurations to use the <i>kconfig-frontends</i> tool is an ongoing effort that will continue for some time.
       </li>
     </ul>
   </li>
@@ -1514,22 +1414,22 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Fixed a *critical* task exit bug.
-        Here is the failure scenario:
-        (1) <code>sched_lock()</code> is called increments the lockcount on the current TCB (i.e., the one at the head of the ready to run list),
-        (2) <code>sched_mergepending()</code> is called which may change the task at the head of the ready-to-run list, then
-        (3) <code>sched_unlock()</code> is called which decrements the lockcount on the wrong TCB.
-        The failure case that I saw was that pre-emption got disabled in the IDLE thread, locking up the whole system.
+        The wrong PID was being signalled with <code>SIGCHILD</code>.
+        It should be  the PID of the task that create the task group, not the ID of the last thread to leave the task group.
+      </li>
+      <li>
+        Added logic so that some internal resources and states are recovered when tasks are deleted or restarted.
+        Handle cases where there are outstanding timed events pending when tasks are deleted or restarted.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>Signals</b>
+      <b>ARMv7-M</b>
     </p>
     <ul>
       <li>
-        <code>sigtimedwait()</code> would return a bad signal number if the signal was already pending when the function was called.
+        Several fixes to the MPU control logic.
       </li>
     </ul>
   </li>
@@ -1539,8 +1439,10 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Some SD cards will appear busy until switched to SPI mode for first time.
-        Having a pull-up resistor on MISO may avoid this problem, but this fix from Petteri Aimonen makes it work also without pull-up.
+        Removable serial drivers race conditions fixed.
+      </li>
+      <li>
+        MAX11802 timing bug (from Petteri Aimonen).
       </li>
     </ul>
   </li>
@@ -1550,43 +1452,25 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        STM32 FLASH driver counting error (from Freddie Chopin).
+        Handle cases were SPI DMA logic fails if <code>sem_wait()</code> is awakened by a signal.
+        Need to clear error flags to prevent corruption of subsequent transfers.
+        Also, bit count should not be changed while the SPI peripheral is enabled (from Petteri Aimonen).
       </li>
       <li>
-        STM32 F4 maximum SPI frequency was wrong (corrected by Petteri Aimonen).
+        Fixes to the OTG FS device driver from Petteri Aimonen.
+      </li>
+      <li>
+        Fix typos in DMA register header file (from Yan T.)
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>STM32 Boards</b>
+      <b>Graphics</b>
     </p>
     <ul>
       <li>
-        Due to cloning of untested code, the logic to control on-board LEDs did not work on any STM32 boards.
-      </li>
-      <li>
-        Serial devices number <code>/dev/ttyS0-5</code> is there is a serial console, but <code>/dev/ttyS1-6</code> if there is no serial console.
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>Binary Formats</b>
-    </p>
-    <ul>
-      <li>
-        C++ static constructors execute now using a start taskhook so that they execute in the context of the child task (instead of in the context of the parent task).
-      </li>
-    </ul>
-  </li>
-  <li>
-    <p>
-      <b>File Systems</b>
-    </p>
-    <ul>
-      <li>
-        Several FAT-related bugs fixed by Petteri Aimonen.
+        Correction to the hyphen in the SANS 17x22 font (from Petteri Aimonen).
       </li>
     </ul>
   </li>
@@ -1596,27 +1480,19 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-        Fix poll/select issure reported by Qiang: <code>poll_interrupt()</code> must call <code>net_lostconnection()</code> when a loss of connection is reported.
-        Otherwise, the system will not remember that the connection has been lost and will hang waiting on a unconnected socket later.
-      </li>
-      <li>
-        Similar issues corrected for <code>recvfrom()</code> and <code>send()</code>.
-      </li>
-      <li>
-        Telnetd would hang in a loop if <code>recv()</code> ever returned a value &lt;= 0.
+        Corrected errors in the socket <code>poll</code>/<code>select</code> logic.  Additional
+        state logic was needed to detect if the socket is still connected
+        before starting the poll wait. (bug reported by Qiang Yu).
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>Libraries</b>
+      <b>Memory Management</b>
     </p>
     <ul>
       <li>
-        <code>fread()</code> could hang on certain error conditions.
-      </li>
-      <li>
-        Can't handle <code>SYSLOG</code> output to a character device from the IDLE task (because the IDLE task can't block). 
+        <code>mallinfo()</code> should hold the memory manager semaphore (from Petteri Aimonen.
       </li>
     </ul>
   </li>
@@ -1626,27 +1502,24 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
     </p>
     <ul>
       <li>
-      Serial was driver was not being built if there is no console device.
-      Obviously, the serial driver may be needed even in this case.
+        Resolved several build errors reported by Mike Smith.
       </li>
     </ul>
   </li>
   <li>
     <p>
-      <b>Additional Bugfixes</b>
+      <b>Applications</b>
     </p>
     <ul>
       <li>
-        <code>sig_timedwait()</code> and <code>clock_time2ticks.c</code>:  Timing &quot;rounding&quot; logic
+        Fixed an NSH memory leak:
+        Needed to detach after creating each pthread.
       </li>
       <li>
-        ARM9 Compilation issue with low vectors.
-      </li>
-      <li>
-        <code>readline()</code> return value
-      </li>
-      <li>
-        As well as other, less critical bugs as detailed in the ChangeLog: HID keyboard, LPC17xx bit definitions, strndup(), PL2303, SYSLOG error handling, AT25, <code>apps/examples</code>.
+        <code>readline()</code> now returns <code>EOF</code> on any failure (instead of a negated <code>errno</code> value).
+        This is because the underlying read is based on logic similar to <code>getc</code>.
+        The value zero (meaning end-of-file) was being confused with a NUL.
+        So if a NUL was received, the NSH session would terminate because it thought it was the end of file.
       </li>
     </ul>
   </li>
@@ -1680,7 +1553,7 @@ svn checkout -r5595 http://svn.code.sf.net/p/nuttx/code/trunk nuttx-code
       <li><a href="#arm926ejs">ARM926EJS</a> (3) </li>
       <li><a href="#armcortexm0">ARM Cortex-M0</a> (1)</li>
       <li><a href="#armcortexm3">ARM Cortex-M3</a> (17)</li>
-      <li><a href="#armcortexm4">ARM Cortex-M4</a> (6)</li>
+      <li><a href="#armcortexm4">ARM Cortex-M4</a> (7)</li>
     </ul>
   <li>Atmel AVR
     <ul>
@@ -2546,7 +2419,7 @@ nsh>
       <b>STATUS:</b>
       This is still a work in progess.
       At present there is a working basic port with OS verification and Nuttshell (<a href="http://www.nuttx.org/Documentation/NuttShell.html">NSH</a>) configurations.
-      This is stablilizing nicely now and the next steps will involve getting solid LCD support on the WaveShare board.
+      This is stablilizing nicely now and the next steps will involve getting solid driver support for the SD slot and the LCD on the WaveShare board.
       </ul>
    </td>
 </tr>
@@ -2750,6 +2623,27 @@ nsh>
   <td><br></td>
   <td><hr></td>
 </tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      <b>TI Stellaris LM4F120</b>.
+      This port uses the TI Stellaris LM4F120 LaunchPad.
+      Jose Pablo Carballo is doing this port.
+    </p>
+    <ul>
+      <p>
+        <b>STATUS:</b>
+        As of this writing, the basic port is code complete but still untested.
+        The fully verified LM4F120 LaunchPad port is expected in NuttX-6.27.
+      </p>
+    </ul>
+  </td>
+</tr>
+<tr>
+  <td><br></td>
+  <td><hr></td>
+</tr>
 <tr>
   <td><br></td>
   <td>
@@ -3842,421 +3736,318 @@ Other memory:
 </table>
 
 <ul><pre>
-nuttx-6.25 2013-02-01 Gregory Nutt &lt;gnutt@nuttx.org&gt;
+nuttx-6.26 2013-05-15 Gregory Nutt &lt;gnutt@nuttx.org&gt;
 
-    * graphics/: Adds 5x8 monospace font. This tiny font is useful for graph
-      labels and for small bitmapped display.  Contributed by Petteri
+    * drivers/serial/serial.c:  Correct some race conditions when checking
+      for disconnection of a removable serial device.
+    * sched/task_posixspawn.c, task_spawn.c, task_spawnparms.c and
+      spawn_internal.h:  Create new interface task_spawn() that is
+      like posix_spawn(), but uses entry point addresses like
+      task_create().
+    * Corrected all argv[] arguments. Should be char * const *, not
+      const char **.
+    * sched/pthread* and include/nuttx/sched: Move pthread join data
+      and pthread key calculation data into the &quot;task group&quot; structure.
+    * sched/atexit.c, on_exit.c, task_exithook.c and include/nuttx/sched.h:
+      Move atexit and on_exit data structures to task group.  These
+      callbacks are only issued now when the final member of the task
+      group exits.
+    * sched/waitpid.c, task_exithook.c and include/nuttx/sched.h:
+      Move waitpid data data structures to task group.  Callers of
+      of waitpid() are now only awakened whent he final thread of the
+      task group exits.
+    * sched/mq_descreate.c, mq_open.c, mq_remove.c, group_leave.c, and
+      include/nuttx/sched.h:  Move list of opened message queues to
+      the task group structures.  Now all message queues opened by
+      members of the group are closed when the last member of the group
+      exits.
+    * includes/nuttx/sched.h and Lots of files:  Change name of _TCB to
+      struct tcb_s so that (1) it is consitent with other NuttX naming and
+      so that (2) the naming can handle some upcoming changes.
+    * includes/nuttx/sched.h and sched/:  There are three TCB structures:
+      struct tcb_s is a generic common version, struct task_tcb_s is a
+      version for tasks and kernel threads and pthread_tcb_s is a version
+      for pthreads.  By dividing the TCB structure into these variants,
+      pthreads do not have to be burdened by task-specific data structures
+      (and vice versa).
+    * sched/task_exithook.c adn group_create.c:  Fix an error, the
+      task within the task group may exit early leaving a pthread to
+      exit the task group last.  In this case, we need to remember the
+      the PID of the main task in the task group and use that PID for
+      signalling SIGCHILD to the parent task group.
+    * included/nuttx/sched.h and sched/sig*.c:  Numerous changes to the
+      signal deliver logic so that the delivery of signals to threads
+      within a task group will be compliant with delivery of signals
+      to threads within a POSIX process.
+    * sched/mq_recover.c and task_exithook.c:  Add logic to handle the
+      case where a task is deleted (or pthread canceled) while it is
+      waiting on a message queue.  task_delete() and pthread_cancel()
+      are dangerous interfaces.  This is only one feeble recover measure
+      of *many* that would be needed to do this safely.
+    * sched/group_killchildren.c, task_recover.c, group_foreachchild.c,
+      sched/restart.c, sched/task_delete.c, and others:  Beef up logic
+      to better support task deletion and pthread cancellation.  Needed
+      to pass need OS test case for task_restart().
+    * sched/include/sched.h and all timed functions in sched/:  Move
+      timer from local variables to TCB.  This is needed so that if a
+      task is canceled or restarted while it is waiting for a timed
+      event, we can gracefully recover.  We can't let the timer expire
+      after the task has been deleted.
+    * arch/arm/include/stm32 and arch/arm/src/stm32:  Add support for
+      the STM32 F3 family (still missing some things).
+    * configs/stm32f3discovery:  This will (eventually) be support for
+      the STM32F3Discovery board.
+    * STM32 F3 and STM32F3Discovery port is complete a ready for test.
+    * arch/arm/src/lpc17xx: Add support for the Cortex-M4 FPU and
+      Mikes &quot;common vector&quot; logic.  The LPC1788 is going to need
+      these things.
+    * arch/arm/src/stm32/stm32_spi.c:  Fix SPI DMA logic that does
+      not work if sem_wait() is interrupt by a signal.  From Petteri
       Aimonen.
-    * configs/stm3220g-eval/nxwm:  Converted to use the kconfig-frontends
-      configuration tool.
-    * configs/sim/nxwm:  Converted to use the kconfig-frontends configuration
-      tool.
-    * include/pthread.h:  In sys/prctl.h because it is needed by
-      pthread_[set|get]name_np()
-    * tools/kconfig.bat:  Kludge to run kconfig-frontends from a DOS shell.
-    * sched/sig_timedwait.c:  Should always move the time up to the next
-      largest number of system ticks.  The logic was rounding.  Noted by
-      Petteri Aimonen.
-    * arch/arm/src/up_head.S:  Fix backward conditional compilation.  NOTE
-      there is a issue of ARM9 systems with low vectors and large memories
-      that will have to be addressed in the future.
-    * libc/misc/lib_kbdencode.c and lib_kbddecode.c:  Add logic to marshal
-      and serialized &quot;out-of-band&quot; keyboard commands intermixed with normal
-      ASCII data (not yet hooked into anything).
-    * drivers/usbhost/usbhost_hidkbd.c:  If CONFIG_HIDKBD_ENCODED is
-      defined, this driver will now use libc/misc/lib_kbdencode.c to
-      encode special function keys.
-    * configs/olimex-lpc1766stk/hidkbd:  This configuration has been
-      converted to use the kconfig-frontends configuration tool.
-    * drivers/lcd/ug-2864hsweg01.c and include/nuttx/lcd/ug-2864hsweg01.h:
-      Driver for UG-2864HSWEG01 OLED contributed by Darcy Gong.
-    * configs/stm32f4discovery/src/up_ug2864hsweg01.c: Support for the
-      UG-2864HSWEG01 OLED for the STM32F4Discovery board.
-    * drivers/usbhost/usbhost_hidkbd.c:  Correct a logic error in how
-      tasks waiting for read data are awakened.
-    * libc/misc/lib_kbdencode.c and lib_kbddecode.c:  Now handles keypress
-      events too.  However, the USB HID keyboard driver has not yet been
-      updated to detect key release events.  That is kind of tricky in
-      the USB HID keyboard report data.
-    * configs/mcu123-214x/nsh:  Converted to use the kconfig-frontends
-      configuration tool.
-    * configs/zp214xpa:  Add basic support for the The0.net ZP213x/4xPA
-      board (with the LPC2148 and the UG_2864AMBAG01).
-    * configs/sim/nxlines:  Add an nxlines configuration for the
-      simulator.
-    * configs/zp214xpa/nxlines:  Add an nxlines configuration for the
-      ZP213x/4xPA (with the LPC2148 and the UG_2864AMBAG01).  Working
-      as of 2012-12-30.
-    * configs/olimex-lpc1766stk/wlan:  Remove non-functional
-      configuration.
-    * configs/stm32f4discovery/src and nuttx/drivers/lcd/ug-2864hsweg01.c:
-      Updates and correctinos for the UG-2864HSWEG01 from Darcy Gong.
-    * configs/lm326965-ek:  All configurations converted to use the
-      kconfig-frontends configuration tool.
-    * configs/Kconfig: NSH_MMCSDSPIPORTNO should depend on MMCSD_SPI,
-      not just SPI (from Jose Pablo Carballo).
-    * arch/arm/src/arm/Kconfig and armv7m/Kconfig:  Add an option for
-      buildroot toolchains:  They may be EABI or OABI.
-    * include/nuttx/progmem and arch/arm/src/stm32/stm32_flash.c:
-      Fix a counting bug plus change interface to use either relative
-      or absolute FLASH addressing (from Freddie Chopin).
-    * libc/misc/Make.defs:  Fix error in conditional for KBD CODEC.
-    * libc/Kconfig and configs/*/defconfig (several):  The default
-      setting should be CONFIG_LIB_KBDCODEC=n
-    * tools/configure.c:  configure.c can be used to build a work-alike
-      program as a replacement for configure.sh.  This work-alike
-      program would be used in environments that do not support Bash
-      scripting (such as the Windows native environment).
-    * tools/configure.bat: configure.bat is a small Windows batch
-      file that can be used as a replacement for configure.sh in a
-      Windows native environment.  configure.bat is actually just a
-      thin layer that executes configure.exe if it is available. If
-      configure.exe is not available, then configure.bat will attempt
-      to build it first.
-    * arch/arm/src/lpc17xx/lpc17_syscon.h:  Correct some typos in bit
-      definitions (from Rommel Marcelo).
-    * libc/string/lib_strndup.c: strndup() should use strnlen(), not
-      strlen(), to determine the size of the string.
-    * sched/os_bringup.c:  Remove support for CONFIG_BUILTIN_APP_START.
-      This is not really a useful feature and creates a violation of the
-      OS layered architecture.
-    * include/unistd.h, arch/arch/src/*:  Implement a simple vfork().
-      On initial checkin, this API is available only for ARM platforms.
-    * binfmt/binfmt_exec.c: exec() now sets the priority of the new task
-      to the same priority as the current task (instead of the arbirtrary
-      value of 50).
-    * libc/unisted/lib_execv.c and lib_execl.c:  New, somewhat flawed,
-      implementations of execv() and execl().
-    * tools/cfgdefine.c:  Strips quotes from CONFIG_EXECFUNCS_SYMTAB
-      value.
-    * arch/arm/include/lm3s/chip.h:  Move chip definitions into
-      public include area for compatibility with other architectures.
-    * arch/arm/src/lm3s/chip:  Move register definition header files
-      into a new chip/ sub-directory.
-    * arch/arm/src/lm3s/lm3s_internal.h:  Broke up into several
-      smaller header files.
-    * arch/arm/src/lm:  Rename the arch/arm/src/lm3s directory to
-      arch/arm/src/lm so that is can support other members of the
-      Stellaris family.
-    * libc/spawn:  Add file action interfaces needed by posix_spawn().
-    * sched/clock_time2ticks.c:  Another case where time was being
-      rounded down instead of up (from Mike Smith).
-    * libc/spawn:  Implementation of posix_spawn() is complete but
-      untested and undocumented.
-    * drivers/usbdev/pl2303.c:  Fix typols in the PL2303 driver
-      (from Max Holtzberg).
-    * configs/stm32f4discovery/posix_spawn:  Added a configuration
-      that can be used for testing posix_spawn().
-    * arch/arm/src/stm32: Bring F1 support for general DMA and serial
-      DMA in paricular up to parity with F2/F4 (from Mike Smith).
-    * libc/stdio/lib_libfread.c:  Correct some error handling when
-      lib_fread() was passed a bad stream.  Needed to move the
-      releasing of a semaphore inside of some conditional logic
-      (cosmetic).
-    * include/nuttx/sched.h, sched/task_setup.c, and sched/task_exithook.c:
-      Add support for remembering the parent task and sending
-      SIGCHLD to the parent when the task exists.
-    * sched/task_exithook.c:  Fixed a *critical* bug.  Here is
-      the scenario: (1) sched_lock() is called increments the lockcount
-      on the current TCB (i.e., the one at the head of the ready to run
-      list), (2) sched_mergepending is called which may change the task
-      at the head of the ready-to-run list, then (3) sched_unlock() is called
-      which decrements the lockcount on the wrong TCB.  The failure case
-      that I saw was that pre-emption got disabled in the IDLE thread,
-      locking up the whole system.
-    * sched/sched_waitpid.c:  Use SIGCHLD instead of a semaphore.  This
-      is a much more spec-compliant implementation.  However, there are
-      some issues with overruning signals because NuttX does not support
-      queueing of signals (POSIX does not require it).  I think it may
-      need to.
-    * sched/sched_waitid.c and sched_wait.c:  Add support for waitid()
-      and wait().  See issues with waitpid() above.
-    * include/nuttx/fs/fs.h and fs/fs_files.c:  Add a dup() method to
-      the struct mountpt_operations.  When dup'ing a file that resides
-      on a mounted volume, let the file system's dup() method do the
-      work.
-    * fs/romfs/fs_romfs.c: Implemented the dup() method for the ROMFS
-      file system.
-    * fs/fat/fs_fat32.c, fs/nxffs/nxffs_initialize, and
-      fs/nfs/nfs_vfsops.c:  Add hooks for dup() method (not yet
-      implemented).
-    * fs/romfs:  Remove the rf_open flag.  It looks good, but actually
-      does nothing.
-    * fs/fat:  Remove the ff_open flag.  Same story as for the ROMFS
-      rf_open flag.
-    * fs/fat/fs_fat32.c, fs/nxffs/nxffs_initialize, and
-      fs/nfs/nfs_vfsops.c:  Completed implementation of the dup() methods.
-      There is still no good test available.
-    * sched/sig_timedwait.c:  sigtimedwait() would return a bad signal
-      number if the signal was already pending when the function was
-      called.
-    * configs/ubw32/scripts:  All common linker scripts moved to this
-      scripts sub-directory
-    * configs/ubw32/ostest:  Configuration configured to use the
-      kconfig-frontends tools.
-    * arch/mips/src/mips32/up_vfork.c, up_vfork.h, and vfork.S:
-      Implement vfork() for MIPS32 (no floating point support)
-    * configs/ubw32/ostest: Enable the vfork() test.
-    * fs/binfs:  Move apps/builtin/binfs.c to fs/binfs/fs_binfs.c
-      CONFIG_APPS_BINDIR rename CONFIG_FS_BINFS
-    * include/nuttx/binfmt/builtin.h:  Some of the content of
-      apps/include/apps.h moved to include/nuttx/binfmt/builtin.h
-    * binfmt/libbuiltin/libbuiltin_utils.c:  Move builtin
-      utility functions from apps/builtin/exec_builtins.c to
-      binfmt/libbuiltin/libbuiltin_utils.c
-    * binfmt/builtin.c and binfmt/libbuiltin:  Add a binary &quot;loader&quot;
-      that can be used to execute builtin programs from the BINFS
-      file system.
-    * configs/sim/nsh: Convert to use kconfig-frontends configuration
-      tool.
-    * binfmt/binfmt_schedunload.c:  Add logic based on SIGCHLD to
-      automatically unload and clean-up after running a task that
-      was loaded into memory.
-    * binfmt/libbuiltin: Extensions from Mike Smith
-    * sched/task_reparent.c:  Add internal interface to change the
-      parent task.
-    * sched/task_posixspawn():  Move libc/spawn/lib_ps.c to
-      sched/task_posixspawn() now it requires internal, reparenting
-      interfaces
-    * include/nuttx/spawn():  Move libc/spawn.h to include/nuttx/spawn.h
-    * arch/arm/include/lpc17xx/chip.h, irq178x.h:  Integrate Marcelo
-      Rommel's LPC1788 definitions into the base LPC17xx.
-    * configs/olimex-lpc1766stk/nsh:  Convert configuration to use
-      the kconfig-frontends tools.
-    * sched/task_reparent.c:  Simplify reparenting interface.
-    * arch/arm/src/[many]: More LPC1788 definitions from Rommel
-      Marcelo incorporated.
-    * configs/open1788:  Board configuration for the Wave Share
-      Open1788 board.  Still fragmentary (contributed by Rommel
-      Marcelo, adapted to use kconfig-frontends.
-    * net/send():  Add logic to work around delayed ACKs by splitting
-      packets (contributed by Yan T.).
-    * net/recvfrom():  Fix a bug.  When the host closes a connection
-      (gracefully).  recv[from]() returned success and the closure
-      was never detected.  Hmmm.. I don't know why the network monitor
-      did not catch this event.  This is an important bug fix.
-    * net/recvfrom():  Fix a introduced with the last bugfix.  If
-      the peer does an orderly closure of the socket, report 0 not
-      -ENOTCONN
-    * configs/lm3s6965-ek/README.txt and tools/:  Add an OpenOCD
-      configuration for the LM3S (from Jose Pablo Carballo).
-    * nuttx/lcd/hd4478ou.h and configs/pcblogic-pic32mx/src/up_lcd1602:
-      Start of support of LCD1602 alphanumeric LCD.  I need a few
-      more parts before I can finish integrating this one.
-    * arch/arm/src/*/chip.h and arch/arm/include/*/chip.h:  Move all
-      priority ranges from the src to the include chip.h header file.
-    * arch/arm/include/armv7-m/irq.h:  Add inline functions to enable
-      and disable interrupts via the BASEPRI register.
-    * arch/arm/Kconfig:  Add new option CONFIG_ARM7VM_USEBASEI
-    * arch/arm/src/*/*_irq.c:  Set the priority of the SVCALL exception
-      to the highest possible value.
-    * arch/armv7-m/up_hardfault.c:  Fail if a hardfault occurs
-      while CONFIG_ARM7VM_USEBASEPRI=y.
-    * arch/arm/src/stm32/stm32_serial.c:  Add support for USART
-      single wire mode (Contributed by the PX4 team).
-    * sched/: Implement support for retaining child task status after
-      the child task exists.  This is behavior required by POSIX.
-      But in NuttX is only enabled with CONFIG_SCHED_HAVE_PARENT and
-      CONFIG_SCHED_CHILD_STATUS
-    * Add support for keyboard encode to the keypad test (from
-      Denis Carikli).
-    * configs/olimex-lpc1766stk/nettest:  Configuration converted to
-      use the kconfig-frontends tools.
-    * net/net_poll.c:  Split net_poll() to create psock_poll() too.
-    * net/net_poll.c:  Fix poll/select issure reported by Qiang:
-      poll_interrupt() must call net_lostconnection() when a
-      loss of connection is reported.  Otherwise, the system will
-      not know that the connection has been lost.
-    * sched/group_create.c, group_join.c, and group_leave.c:  Add
-      support for task groups.
-    * sched/group_signal.c and task_exithook.c:  Send signal to all
-      members for the parent task group.
-    * include/nuttx/sched.h and sched/env_*.c:  Move environment
-      variables into task group structure.
-    * sched/: Lots of file changed.  Don't keep the parent task's
-      task ID in the child task's TCB.  Instead, keep the parent
-      task group IN the child task's task group.
-    * fs/, sched/, include/nuttx/sched.h, and include/nutts/fs/fs.h:
-      Move file data from the TCB to the task group structure.
-    * libc/stdio/, sched/, include/nuttx/lib.h, and include/nutts/fs/fs.h:
-      Move stream data from the TCB to the task group structure.
-    * net/, sched/, and include/nuttx/net/net.h:  Move socket data
-      from the TCB to the task group structure.
-    * sched/task_starthook.c, sched/task_start.c, and include/nuttx/sched.h:
-      Add a task start hook that will be called before the task main
-      is started. This can be used to schedule C++ constructors to run
-      automatically in the context of the new task.
-    * binfmt/binfmt_execmodule: Execute constructors as a start hook.
-    * sched/os_start.c: Fix ordering of group initialization.
-    * configs/stm32f4discovery/usbnsh:  Add an NSH STM32F4Discovery
-      configuration that uses USB CDC/ACM for the NSH console.
-    * configs/stm32f4discovery/nsh: Converted to use the kconfig-frontends
-      tools.
-    * configs/*/src/up_userleds.c: Fix a error that was cloned into
-      all STM32 user LED code.  The wrong definitions were being used
-      to set LEDs on or off.
-    * arch/*/common/up_internal.h and arch/*/common/up_initialize.c:
-      Serial was driver was not being built if there is no console
-      device.  Obviously, the serial driver may be needed even in
-      this case.
-    * arch/arm/src/stm32/stm32_serial.c: If there is a serial console,
-      it would be ttyS0 and the others would be ttyS1-5.  If there
-      is not serial console, was labeling them ttyS1-6; now labels them
-      ttyS0-5.
-    * fs/fs_syslog.c: Can't handle SYSLOG output to character device from
-      the IDLE task (because it can't block). syslog_putc now returns EOF
-      on failure and sets errno.  Fixed some errors in error handling.
-    * libc/stdio/lib_syslogstream.c:  Checking of return value from
-      syslog_putc was bogus.  Switching to EOF for all errors solves
-      this.
-    * arch/arm/src/lm/chip/lm4f_memorymap.h: More LM4F changes from
-      Jose Pablo Carballo.
-    * drivers/serial/serial.c, include/nuttx/serial/serial.h,
-      drivers/usbdev/cdcacm.c, and drivers/pl2303.c: Add support for
-      removable serial devices (like USB serial).  This support is enabled
-      by CONFIG_SERIAL_REMOVABLE.
-    * arch/*/src/*/Toolchain.defs: Change assignment so that we can
-      override CROSSDEV with a make command line argument.
-    * include/assert.h:  Mark assertion functions as non-returning.
-    * arch/*/src/*/up_assert.h:  Mark _up_assert() as non-returning.
-    * drivers/mtd/at25.c: When the AT25 device was not available the
-      initialization did not fail like it should. From Petteri Aimonen.
-    * fs/fat/fs_configfat.c:  Fix some errors in FAT formatting logic
-      for large devices and for FAT32. From Petteri Aimonen.
-    * fs/fat/fs_fat32util.c:  Fix an initialization error found by
-      Petteri Aimonen.  freecount and next freecount initialization were
-      reversed.
-    * drivers/mmcsd/mmcsd_spi.c: Some SD cards will appear busy until
-      switched to SPI mode for first time.  Having a pull-up resistor on
-      MISO may avoid this problem, but this patch makes it work also
-      without pull-up.  From Petteri Aimonen.
-    * fs/fat/fs_fat32.c: Fix a compilation error when FAT_DMAMEMORY=y. 
+    * drivers/input/max11802.c: MAX11802: Fix a timing bug that
+      corrupted coordinates.  From Petteri Aimonen.
+    * drivers/mmcsd/mmcsd_spi.c:  Use SPI locking so that MMC/SD can
+      exist on the same bus as other SPI devices.  From Petteri
+      Aimonen.
+    * graphics/nxfonts/nxfonts_sans17x22.h: Small mod to hyphen in
+      sans17x22 font.  The hyphen did not have any space on its sides.
+      This caused it to run together with other characters so that for
+      example &quot;+-&quot; would look weird. From Petteri Aimonen.
+    * mm/mm_mallinfo.c:  Take MM semaphore in mm_mallinfo. From Petteri
+      Aimonen.
+    * configs/stm32f3discovery/nsh/defconfig:  Disable SPI.  It is not
+      used.
+    * drivers/mtd/sst39vf:  Add a driver for the SST29VF NOR FLASH parts.
+    * sched/os_start.c:  Add an additional call-out to support board-
+      specific driver initialization during the start phase:  If
+      CONFIG_BOARD_INITIALIZE is defined, then an additioinal
+      initialization function called board_initialize() will be called
+      just after up_initialize() is called and just before the initial
+      application is started.
+    * arch/arm/src/stm32/stm32_otgfsdev.c, drivers/usbdev/usbdev_trprintf.c,
+      and include/nuttx/usb/usbdev_trace.h:  Add logic to support decoding
+      of device-specific trace events to make the trace ouput more readable.
       From Petteri Aimonen.
-    * arch/arm/src/stm32/chip/stm32_spi.h: STM32F4 max SPI clock freq is
-      37.5 MHz.  Patch from Petteri Aimonen.
-    * arch/arm/src/stm32/stm32_spi.c: Fixes for SPI DMA work on the
-      STM32F4. Includes untested additions for the F1 implementation as
-      well.  From Petteri Aimonen.
+    * arch/arm/src/stm32/stm32_otgfsdev.c:  Need to manually set CNAK in
+      the case where we are waiting for a SETUP command with DATA.  Otherwise,
+      the core may NAK further transactions.  From Petteri Aimonen.
+    * arch/arm/src/stm32/stm32_otgfsdev.c: Add logic to prevent premature
+      to IDLE state.  This change (plus the previous) was necessary to get
+      the CDC/ACM driver working the certain STM32 F4 hardware (but not others).
+      These changes appear to prevent certain race conditions that may or may
+      not cause USB problems.  From Petteri Aimonen.
+    * arch/arm/include/armv6-m and arch/arm/src/armv6-m: First cut at support
+      for the Cortex-M0
+    * configs/nutiny-nuc120, arch/arm/include/nu1xx, and arch/arm/src/nuc1xx:
+      Support for Nuvoton NuTiny NUC120.
+    * 2013-02-22:  the Cortex-M0, NuvoTron NUC1xx, and NuTiny-SDK-NUC120 port
+      is code complete and ready for testing.
+    * configs/ekk-lm3s9b96/ostest and nsh:  All EKK-LM3S9B96 configurations
+      converted to use the mconf configuration tool.
+    * configs/zkit-arm-1769:  Add support for Zilogic System's ARM development
+      Kit, ZKIT-ARM-1769.  From Rashid.
+    * configs/zkit-arm-1769/hello:  Add a &quot;Hello, World!&quot; configuration for
+      the KBIT-ARM-1769 board.  From Rashid.
+    * configs/zkit-arm-1769/thttpd:  Add a THTTPD configuration for the
+      KBIT-ARM-1769 board.  From Rashid.
+    * 2013-02-27: All configurations for the Cortex-M0 NuTINY-SDK-NUC120
+      appear to be functional and stable.
+    * configs/zkit-arm-1769/nsh:  Add an NSH configuration for the
+      KBIT-ARM-1769 board.  From Rashid.
+    * arch/arm/src/stm32/stm32_otgfsdev.c:  Fixes from Petterri Aimonen
+      related to corner cases that can cause infinite interrupts.
+    * drivers/usbdev/usbmsc_scsi.c:  Change to allow the full name in the
+      USB descriptor but a truncated, 8-byte name in the SCSI field.
+      From Petteri Aimonen.
+    * arch/arm/src/stm32/stm32_spi.c: Need to clear error flags to prevent
+      corruption of subsequent transfers.  Also, bit count should not be
+      changed while the SPI peripheral is enabled.  From Petteri Aimonen.
+    * drivers/mmcsd/mmcsd_spi.c:  When bus is shared, the speed has to be
+      set every time.  Also SD cards require a few dummy clocks to react
+      into CS release.  From Petteri Aimonen.
+    * configs/lm4f120-launchpad: In initial configuration for testing
+      the LM4F120 LaunchPad port.  This is to support testing only and
+      is not yet a functional board port (as of 2013-03-01).
+    * arch/arm/include/lm/lm4f_irq.h and arch/arm/src/lm/chip/lm4f_vector.h:
+      Add interrupt vector/IRQ number definitions for the LM4F120.
+    * arch/arm/src/stm32f20xxx_dma.c and stm32f40xxx_dma.c:  Fix a typo
+      in assigned base register addresses for each DMA channel.  From
+      Yan T.
+    * Several build fixes from Mike Smith were incorporated.  These were
+      mostly compilation errors introduced into the system because of the
+      large number of recent changes with broad scope (2013-03-04).
+    * configs/zkit-arm-17969/src/up_can.c:  Add CAN support to the
+      Zilogics Technologies ZKIT-ARM-1769 board (From Rashid Fatah, (2013-03-04)).
+    * arch/arm/src/lpc17/lpc17*_clockconfig.c:  The WaveShare Open1788
+      board now boots and passes the OS test.  This is the work of
+      Rommel Marcelo (2013-03-04).
+    * arch/arm/src/lm/lm_gpio.c, lm_gpio.h, and chip/lm4f_pinconfig.h
+      Extend GPIO logic to handle LM4F.  Add LM4F pin configuration header
+      file (2013-03-04).
+    * configs/open1788:  Enable LED support in all configurations.
+      (2013-03-04)
+    * configs/open1788/nsh:  NSH configuration verified function.  By Rommel
+      Marcelo (2013-03-05).
+    * configs/open1788/src/lpc17_nsh.c:  Use the SD card interface, not SPI
+      to interface with SD cards (2013-03-05.
+    * arch/arm/src/lpc17xx/lpc17_sdcard.c and header files:  Clone the STM32
+      SD card interface to the LPC1788.  It appears to be the same IP.
+      (2013-03-05)
+    * libc/wqueue:  Work queue logic moved from sched/ to libc/wqueue.  It
+      is not really core OS functionality and this move helps prepare for
+      user-space work queues. (2013-03-05)
+    * libc/wqueue:  Implemented user-space work queues.  These will not
+      get tested until the next time I attempt a NuttX kernel build.
+      (2013-03-05).
+    * arch/arm: Correct some bad syscall dispatching logic.  This change
+      cannot be fully tested until there is a fielded NuttX kernel build.
+      (2013-03-06).
+    * net/net_poll.c:  Correct logic that checks if the socket is
+      disconnected when the poll is setup.  That is bad logic:  Listen
+      sockets, for example, are not connected.  In that case, the purpose of
+      the poll is to wait for connection events.  As a result of this,
+      poll/select would return immediately with POLLHUP with it was used to
+      detect connection events.  This fix for now was to check instead if
+      the socket is closed (meaning that it was connected at one time but
+      was closed by the remote peer).  That excludes the listen socket which
+      was never connected.  This does introduce a new problem, however.  If
+      the socket was not closed, but lost the connection through an abnormal
+      event, then poll/select will hang.  That needs to be revisited.
+      (2013-03-07)
+    * fs/fs_select.c:  Was not checking if the timeout parameter was NULL
+      but would, instead, setup a bogus timeout based on whatever it found at
+      address zero.  Also, improved some of the memory allocation logic so
+      that it will not use so much memory. (2013-03-07)
+    * net/net_poll.c:  Handle the missing case.  Now tests for not connected
+      AND not listening.  I think that now covers all of the cases including
+      the missing case noted above. (2013-03-07)
+    * mm/:  Move all memory manager globals into a structure.  A reference
+      to this structure is now passed internally between mm APIs. This
+      change will (eventually) support multiple heaps and heap allocators.
+      (2013-03-08).
+    * mm/ and include/nuttx/mm.h:  Implement support for multiple heaps.
+      (2013-03-08).
+    * arch/*/src: xyz_addregion() needs to call kmm_addregion, not mm_addregion.
+      (2013-03-08).
+    * sched/kmm*.c:  Move this garbage kmm*.c file to mm/. until I decide what
+      to do with them (which is probably to just delete them). (2013-03-08).
+    * mm/mm_test.c and Makefile.test:  Deleted the memory test.  This was
+      a good test and helped me a lot when I wrote the memory manager, but
+      now it is in the way and paralyzing other efforts.  So the memory unit
+      test was deleted. (2013-03-08)
+    * sched/sched_free.c:  Rename sched_free() to sched_ufree(); Add
+      sched_kfree() to handler deferred kernel heap allocations. (2013-03-10)
+    * arch/:  User user-accessible heap to allocate all stacks. (2013-03-10)
+    * arch/arm/src/sam3u:  The AT91SAM3U will now support a kernel heap if
+      so configured. (2013-03-10)
+    * configs/sam3u-ek/knsh:  This configuration was converted to use the
+      kconfigs-frontends build tool. (2013-03-10)
+    * configs/*/include/user_map.h and include/nuttx/userspace.h:  Remove
+      the very kludgy user_map.h file and replace it with a header that
+      is expected at the beginning of the user-space blob. (2013-03-10)
+    * configs/sam3u-ek/kernel/up_userspace.c:  This is the header for
+      the SAM3U-EK's user space.  (2013-03-10)
+    * sched/os_bringup.c:  In the kernel build, os_bringup() now uses the
+      user-space header to automatically start the user-space work queue,
+      if so configured. (2013-03-10)
+    * arch/arm/src/lpc17xx/lpc17_mpuinit.c and lpc17_userpace.c:  Add
+      support for the MPU and kernel build for the LPC17xx family.
+      (2013-03-11)
+    * configs/open1788/kernel and knsh:  Add kernel build support and
+      a kernel NSH configuration for the WaveShare Open1788 board.
+      (2013-03-11)
+    * configs/sam3u_ek/kernel, knsh, and scripts:  Move some files around
+      for better supportability. (2013-03-11)
+    * configs/open1788/kernel, knsh, and scripts:  Add a kernel mode build
+      configuration for the WaveShare Open1788 board. (2013-03-11)
+    * arch/arm/src/armv7-m/up_mpu.c:  Several fixes to MPU logic.
+      (2013-03-12).
+    * arch/arm, configs/sam3u-ek, configs/open1788:  Fix memory map for
+      kernel mode build; Some regions were overlapping. (2013-03-13).
+    * arch/:  Rename g_heapbase to g_idle_topstack.  This is the same value
+      however:  The top of the IDLE stack is the same as the base of the
+      heap in the flat build.  But not in the kernel build:  The base of
+      the heap is elsewhere so the naming was wrong. (2013-03-13).
+    * libc/stdlib/lib_itoa.c:  Implementation of itoa() contributed by
+      Ryan Sundberg. (2013-03-14).
 
-apps-6.25 2013-02-01 Gregory Nutt &lt;gnutt@nuttx.org&gt;
+apps-6.26 2013-03-15 Gregory Nutt &lt;gnutt@nuttx.org&gt;
 
-    * Makefiles: Removed dependency of distclean on clean in most top-level
-      files.  It makes sense for 'leaf' Makefiles to have this dependency,
-      but it does not make sense for upper-level Makefiles.
-    * apps/namedapp/: Renamed to builtins in preparation for another change.
-    * .context:  Removed the .context kludge.  This caused lots of problems
-      when changing configurations because there is no easy way to get the
-      system to rebuild the context.  Now, the context will be rebuilt
-      whenever there is a change in either .config or the Makefile.
-    * apps/builtin/registry:  Updated new built-in registration logic to handle
-      cases where (1) old apps/.config is used, and (2) applications ared
-      removed, not just added.
-    * apps/examples/nettest/Makefile:  Fix an error that crept in during
-      some of the recent, massive build system changes.
-    * apps/builtin/Makefile:  Need to have auto-generated header files
-      in place early in the dependency generation phase to avoid warnings.
-      It is not important if they are only stubbed out header files at
-      this build phase.
-    * apps/examples/hidbkd: Now supports decoding of encoded special keys
-      if CONFIG_EXAMPLES_HIDKBD_ENCODED is defined.
-    * apps/examples/hidbkd:  Add support for decoding key release events
-      as well.  However, the USB HID keyboard drier has not yet been
-      updated to detect key release events.  That is kind of tricky in
-      the USB HID keyboard report data.
-    * apps/examples/wlan: Remove non-functional example.
-    * apps/examples/ostest/vfork.c:  Added a test of vfork().
-    * apps/exampes/posix_spawn: Added a test of posix_spawn().
-    * apps/examples/ostest:  Extend signal handler test to catch
-      death-of-child signals (SIGCHLD).
-    * apps/examples/ostest/waitpid.c:  Add a test for waitpid(), waitid(),
-      and wait().
-    * builtin/binfs.c:  Add hooks for dup() method (not implemented).
-    * builtin/exec_builtin.c, nshlib/nsh_parse.c, and nshlib/nsh_builtin.c:
-      NSH now supports re-direction of I/O to files (but still not from).
-    * builtin/binfs.c:  Greatly simplified (it is going to need to be
-      very lightweight).  Now supports open, close, and a new ioctl to recover
-      the builtin filename.  The latter will be needed to support a binfs
-      binfmt.
-    * builtin/binfs.c:  Move apps/builtin/binfs.c to fs/binfs/fs_binfs.c
-      CONFIG_APPS_BINDIR rename CONFIG_FS_BINFS
-    * apps/include/builtin.h:  Some of the content of
-      apps/include/apps.h moved to include/nuttx/binfmt/builtin.h.
-      apps/include/apps.h renamed builtin.h
-    * apps/builtin/exec_builtins.c:  Move builtin
-      utility functions from apps/builtin/exec_builtins.c to
-      binfmt/libbuiltin/libbuiltin_utils.c
-    * apps/nshlib/nsh_mountcmds.c:  The block driver/source
-      argument is now optional.  Many files systems do not need
-      a source and it is really stupid to have to enter a bogus
-      source parameter.
-    * apps/nshlib/nsh_fileapp.c:  Add the ability to execute a file
-      from a file system using posix_spawn().
-    * apps/builtin/: Extensions from Mike Smith.
-    * apps/examples/ftpd/Makefile: Name ftpd_start is not the name of
-      the entrypoint.  Should be ftpd_main (from Yan T.)
-    * apps/netutils/telnetd/telnetd_driver: Was stuck in a loop if
-      recv[from]() ever returned a value &lt;= 0.
-    * apps/examples/nettest and poll:  Complete Kconfig files.
-    * apps/examples/ostest/waitpid.c:  Need to use WEXITSTATUS()
-      to decode the correct exit status.
-    * apps/system/usbmonitor:  A daemon that can be used to monitor USB
-      trace outpout.
-    * apps/nshlib/nsh_usbdev.c, nsh_consolemain.c, nsh_session.c, nsh_script.c:
-      Add support for a login script.  The init.d/rcS script will be executed
-      once when NSH starts; the .nshrc script will be executed for each session:
-      Once for serial, once for each USB connection, once for each Telnet
-      session.
-    * apps/system/readline: Correct readline() return value.  Was not
-      any returning special values when end-of-file or read errors
-      occur (it would return an empty string which is not very useful).
+    * apps/builtin/exec_builtin.c:  Now uses task_spawn() to start
+      builtin applications.
+    * Type of argv has changed from const char ** to char * const *
+    * apps/nshlib/nsh_parse.c:  Fix memory lead: Need to detach after
+      creating a pthread.
+    * apps/examples and nshlib:  Change name of _TCB to struct tcb_s to
+      match NuttX name change.
+    * apps/examples/ostest/restart.c:  Add a test case to verify
+      task_restart().
+    * apps/system/readline.c:  readline() now returns EOF on any failure
+      (instead of a negated errno value).  This is because the underlying
+      read is based on logic similar to getc.  The value zero was being
+      confused with a NUL.  So if a NUL was received, the NSH session
+      would terminate because it thought it was the end of file.
 
-NxWidgets-1.5 2013-02-01 Gregory Nutt &lt;gnutt@nuttx.org&gt;
+NxWidgets-1.6 2013-03-15 Gregory Nutt &lt;gnutt@nuttx.org&gt;
 
-    * NxWidgets::CGraphicsPort::move():  Fix typo bug in bounding rectangle
-      calculation (from Petteri Aimonen).
-    * NxWM::CScrollingPanel::scrollChildren(): Avoid unnecessary redraws in
-      CScrollingPanel (contributed by Petteri Aimonen).
-    * NxWM::CCycleButton:  Remove the separator from CCycleButton. It draws in
-      wrong place, and doesnt look very good in the correct place either.
-      (from Petteri Aimonen).
-    * NxWidgets::CGraphicsPort: Many times we only want a constant background.
-      In that case the old code fills the background, reads it back, renders
-      the text and then writes it back. When used with LCD's (instead of
-      framebuffers) this causes unnecessary delay and screen flicker.
-      This commit adds a variant of drawText that takes background color,
-      so that the background and text can both be rendered at one go.
-      The old functions still function as before (Petteri Aimonen).
-    * NxWidgets::CLabel: The label was drawn as a single rectangular region,
-      then a text was added to the on top of this.  The result is that the
-      text would flicker when the CLabel was updated. With this change, the
-      two step update is replaced with a five step update:  The background
-      is updated as four rectangulear regions (leaving the previous text in
-      place), then the new text is updated.  This eliminates the flicker
-      (Petteri Aimonen).
-    * Kconfig: Many NxWidgets/NxWM settings do not have meaningful, generic
-      default values.  Colors, for example, depend on pixel depth.  Some
-      geometry settings depending on other geometry settings.  Font IDs are
-      not know-able by the configuration system.  etc.  In these cases, it
-      is best if the settings are just not undefined so that the system can
-      calculate a reasonable default.  however, if no default is provided
-      in the .config file, mconf will complain and generate errors.  So work
-      around this, I added several &quot;enabling&quot; settings to override the
-      default setting.  This is awkward and I preferred the configuration as
-      it was before, but this avoids the mconf errors and warnings.
-    * UnitTests:  Changed occurrences of lib_rawprintf() and lib_lowprintf()
-      to match recent changes to NuttX (will be in NuttX-6.25)
-    * CGraphicsPort::_drawText:  Renamed from CGraphicsPort::drawText in order
-      to eliminate some naming collisions when overloaded in some configurations
-      (i.e., when both bool and nx_pixel_t are uint8_t).  From Petteri Aimonen.
-    * CNxWidgets::drawContents: Change base drawContents from a do-nothing
-      function to a function that fills the widget with the background color.
-      This is useful when using CNxWidgets as a &quot;panel&quot; , i.e. a container
-      for other widgets. Subclasses will override drawContents and decide
-      themselves how to draw the background.
-    * CNxWidgets::CTabPanel:  A new widget contributed by Petteri Aimonen.
-      This widget provides a tab panel, which has a button bar at the top
-      and panels below it. Pressing a button will select the corresponding
-      panel.
+    * Type of argv[] has changed from const char ** to char * const *
+    * NXWidgets::CNxWidget:  Add an inline function to get the current style.
+    * NxWM::CTaskBar: Make a some methods of CTaskbar virtual to allow
+      customizations.  From Petteri Aimonen.
+    * NXWidgets::CCycleButton: Make CCycleButton change state in onPreRelease().
+      This way the new value is already available when a listener gets the
+      action event.  From Petteri Aimonen.
+    * NxWidgets/tools/bitmap_converter.py: Fix bitmap_converter.py so that
+      it works with indexed input images.
+    * NxWidgets::CLabel: Fix backward conditional compilation in the
+      &quot;flicker free&quot; logic.
+    * NxWidgets::CNxTimer:  Previously repeated timers were re-enabled after
+      the timer action event. Consequently, if the action event handler tried
+      to stop the timer, the request would be ignored.  Changes the order
+      so that the timer is re-enabled before the callback.  There is still
+      no risk of re-entrancy, because everything executes on the USRWORK work
+      queue.  From Petteri Aimonen.
+    * NxWidgets::CMultiLineTestBox: Fix text placement error.  From Petteri
+      Aimonen.
+    * NxWidgets::CWidgetControl:  Added another semaphore, boundssem, which
+      is set as soon as the screen bounds are known.  This corrects two
+      problems:
+      1) Due to the way nxgl_rectsize computes the size, it will never
+         be 0,0 like CWidgetControl expects. Therefore the size is considered
+         valid even though it has not been set yet.
+      2) After the check is fixed to test for &gt; 1, NxWM window creation will
+         hang. This is due to the fact that it uses the screen bounds for
+         determining window size. This was being blocked on geosem, which
+         is only posted after the size has been set.
+      From Petteri Aimonen.
+    * NxWidgets::CImage:  Two enhancements:
+      1) Allow changing the bitmap even after the control has been created.
+      2) Allow giving 'null' to have the control draw no image at all.
+      From Petteri Aimonen.
+    * NxWM::CTaskBar:  Allow windows with null icon. This makes sense for e.g.
+      full screen windows.  From Petteri Aimonen.
+    * NxWM::CApplicationWindow:  Add config options to override NxWM
+      stop/minimize icons.  From Petteri Aimonen.
+    * NwWM::CStartWindow, NxWM::CWindowMessenger: Get rid of the start window
+      thread. Instead, handle all events through the USRWORK work queue.
+      For me, this was necessary because I would open some files in button
+      handlers and close them in NxTimer handlers. If these belonged to
+      different tasks, the close operation would fail.  Further benefits:
+      + Gets rid of one task and message queue.
+      + Reduces the amount of code required
+      + Decouples CStartWindow from everything else - now it is just a window
+        with application icons, not an integral part of the event logic.
+      + All events come from the same thread, which reduces the possibility of
+        multithreading errors in user code.
+      + The user code can also send events to USRWORK, so that everything gets
+        serialized nicely without having to use so many mutexes.
+      Drawbacks:
+      - Currently the work state structure is malloc()ed, causing one allocation
+        and free per each input event. Could add a memory pool for these later, but
+        the speed difference doesn't seem noticeable.
+      - The work queue will add ~50 ms latency to input events. This is however
+        configurable, and the delay is anyway short enough that it is unnoticeable.
+      From Petteri Aimonen.
 
 uClibc++-1.0 2011-11-05 &lt;gnutt@nuttx.org&gt;
 
@@ -4264,31 +4055,11 @@ uClibc++-1.0 2011-11-05 &lt;gnutt@nuttx.org&gt;
       C++ library for NuttX.  This package was contributed ay Qiang Yu and
       David for the RGMP team.
 
-buildroot-1.11 2011-11-05 &lt;gnutt@nuttx.org&gt;
+buildroot-1.12 2011-13-15 &lt;gnutt@nuttx.org&gt;
 
-    * configs/avr-defconfig-4.3.3 - Added --enable-long-long as a GCC
-      option.
-    * configs/avr-defconfig-4.5.2 - New configuration.
-    * Config.in and almost all configurations in configs/ - Changed the
-      default nuttx path to $(TOPDIR)/../../nuttx
-    * Misc files.  Patch provided by Gerd v. Egidy that solves the following
-      problems
-      - binutils 2.21 is not available on the gnu servers anymore, they replaced
-        it with 2.21.1
-      - there is some assembler error when compiling gcc for arm, gcc bugzilla
-        43999
-      - you can't build nuttx for cortex m3/m4 because of a missing instruction
-        in the assembler, binutils bugzilla 12296
-    * Add support for binutils 2.22 and GCC 4.6.3.
-    * Change name of all tools from xxx-elf to xxx-nuttx-elf
-    * Added an ARM EABI GCC 4.6.3 configuration (tool name is arm-nuttx-eabi-).
-    * ldnxflat: Add support for the R_ARM_REL32 relocation.  This relocation
-      type was not generated by GCC/LD prior to gcc-4.6.3
-    * R_ARM_REL32 logic is conditionally disabled because it has not been
-      tested.
-    * ldnxflat: Correct a memory allocation error that could cause written
-      past the end of allocated memory.  Partial restoration of R_ARM_REL32
-      logic.  There are lots of issues that I still do not understand here.
+    * Fix typo toolchain/gdb/Config.in that prevented GDB 7.4 from building
+      (from Ken Bannister).
+    * Add support for a Cortex-M0 toolchain based on GCC 4.6.3.
 
 pascal-3.0 2011-05-15 Gregory Nutt &lt;gnutt@nuttx.org&gt;