Completes coding of the PWM module

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679

1 files changed, 2285 insertions, 0 deletions

diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
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+0.1.0 2007-03-09  Gregory Nutt <gnutt@nuttx.org>
+
+	* Initial Release
+	* Support for Linux user mode simulation and TI
+	  TMS320C5471 (Arm7) provided
+
+0.1.1 2007-03-14  Gregory Nutt <gnutt@nuttx.org>
+
+	* Corrected an error in interrupt level context switching
+	  for C5471
+	* Added fgets() and gets() logic; verified c5471 console read.
+	* Corrected error in reading from the C5471 serial port:
+	  Improper use of semaphore can cause deadlock.
+	* Fixed an error in the memory cleanup:  The idle task
+	  cannot take sempahores (because it must always be ready
+	  to run).
+	* Tasks can now accept a configurable maximum number of
+	  input parameters (argc)
+	* _task_init() was divided into separate functions that
+	  require fewer parameters.  This was necessary to keep
+	  the stack usage down for the 8051/2 (which has only
+	  256 bytes of stack).
+	* Attempts to use C5471 console from interrupt handlers
+	  can cause errors. Added a special path for this case.
+	* Refuse calls to sem_wait and sem_trywait from interrupt
+	  handlers.  This was happening because interrupt handlers
+	  were calling printf-like functions.
+	* Added strtok() and strtok_r()
+	* Added a simple shell called nsh (see examples/nsh).
+	* Platform support for 8052 is complete but not stable
+	  when the timer interrupt is enabled.	Seems to be an
+	  issue when SP enters indirect address space.
+	* Documentation updates
+
+0.1.2 2007-03-19  Gregory Nutt <gnutt@nuttx.org>
+
+	* Add dirent.h, opendir(), readdir(), closedir(), etc.
+	* Add strerror()
+	* Added 'ls' command to nsh
+	* Added C5471 watchdog driver
+	* Fixed another bug where free() is called from IDLE task.
+	  Can't do this; the caller must be able to wait for access
+	  to memory.
+	* Fixed bugs associated with debug output:
+	  Cannot do dbg() in middle of context switch logic.
+	  because it may require use of semaphores and cause
+	  additional context switches. lldbg() is safe.
+	* Interrupt must be disabled throughout all context switches.
+	* Separated C5471 serial driver; a shareable part is
+	  in drivers/. ; the C5471 specific part is in arch/C5471.
+	  serial.h defines the interface.
+	* Fixed mq_receive() and mq_send(): bad memcpy()
+	* Fixed C5471 signal deliver logic: use of dbg() and
+	  other actions by use signal handler can alter errno.
+	  need to protect errno during signal handling.
+	* Fixed uninitialized variable in filesystem that could
+	  cause various problems
+	* Added a test for roundrobin scheduler.
+
+0.2.1 2007-03-22  Gregory Nutt <gnutt@nuttx.org>
+
+	* Fix error in handing signed decimal in vsprintf().
+	* Major restructuring of header files to get closer to
+	  POSIX compliance.
+	* Eliminate compilation warnings that crept into recent check-ins
+	* Add kill()
+	* Added support for POSIX timers
+	* Some Documentation updates
+	* Added support for the Neuros OSD / DM320
+
+0.2.2 2007-03-26 Gregory Nutt <gnutt@nuttx.org>
+	* Created the configs/ directory; separated board configuration
+	  from processor architecture logic
+	* Add memory leak detection test to examples/ostest
+	* Corrected memory leak in OS pthread join logic
+	* Corrected memory leaks in examples/ostest due to failures
+	  to join or detach from pthreads.
+	* Added pthread_once(), pthread_kill(), pthread_sigmask()
+	* Added pthread_barrierattr_*() APIs
+	* Added pthread_barrier_init(), pthread_barrier_destroy(), and
+	  pthread_barrier_wait();
+	* Added pthread barrier test
+	* Added protection so that errno cannot be modified from
+	  interrupt handling.
+	* sched_setparam(), sched_setscheduler() now correctly set
+	  errno; pthread_setscheduler() now returns the correct errno.
+	* Added pthread_setschedprio().
+	* Added directories to hold board-specific header files
+	* Added directories to hold board-specific drivers
+
+0.2.3 2007-03-29 Gregory Nutt <gnutt@nuttx.org>
+
+	* mq_receive and mq_send now return errno's appropriately
+	* mq_receive and mq_send are now correctly awakened by signals.
+	* Fixed an unmatched sched_lock/unlock pair in task_delete().
+	* sched_lock must be called in _exit() because operation of
+	  task_delete() can cause pending tasks to be merged and a
+	  context switch to occur.
+	* Added mq_timedreceive() and mq_timedsend()
+	* signal mask is now inherited by both child tasks and threads.
+	* Improved sharebility of stdout among pthreads (only).  Nothing
+	  was broken, but by moving the mutual exclusion logic to a
+	  higher level, the printf output is more readable.
+	* Fixed a bug in file system cleanup:  A list was being deleted
+	  before the buffers contained in the list.
+	* Fixed a bug in the wait-for-message-queue-not-empty logic.
+	* Added a test of timed mqueue operations; detected and corrected
+	  some mqueue errors.
+	* Identified and corrected a race condition associated with
+	  pthread_join.  In the failure condition, memory was being
+	  deallocated while still in use.
+
+0.2.4 2007-04-28 Gregory Nutt <gnutt@nuttx.org>
+
+	* Verified c5471 build under Cygwin on WinXP
+	* Makesystem changes to better support different SoCs.
+	* Made arch/c5471/include and arch/dm320/include identical in
+	  preparation for merging into arch/arm
+	* Logic from arch/c5471 and arch/dm320 combined into arch/arm.
+	  arch/c5471 and arch/dm320 are deprecated and will be removed
+	  when the new c5471 and dm320 logic is verified.
+
+0.2.5 2007-05-19 Gregory Nutt <gnutt@nuttx.org>
+
+	* Corrected some build/configuration issues introduced with the
+	  last release.
+	* Added support for the NXP 214x processor on the mcu123.com lpc214x
+	  development board (untested)
+	* Added support for block devices.
+	* Simulated target now exports a VFAT filesystem
+	* Begin support for VFAT filesystem (missing functionality)
+	* Added mount() and umount()
+	* Fix bug in memcmp return value
+	* Fix errors in timeslice calculation (several places)
+	* Added missing irqrestore() in timer_deleteall().
+	* close() was not closing the underlying device.
+	* Added fsync()
+	* Added strspn() and strcspn()
+
+0.2.6 2007-05-26 Gregory Nutt <gnutt@nuttx.org>
+
+	* Added unlink(), mkdir(), rmdir(), and rename()
+	* Fixed several serious FAT errors with oflags handling (&& instead of &)
+	* Added FAT support for unlink(), mkdir(), rmdir(), and rename
+	* Added FAT support for opendir(), closedir(), readdir(), seekdir(),
+	  telldir(), rewindir().
+	* Fixed ARM compilation errors introduced in 0.2.5 (that is what I get
+	  for only testing on the simulation).
+
+0.2.7 2007-06-09 Gregory Nutt <gnutt@nuttx.org>
+
+	* Added stat() to fs layer and to FAT
+	* Fixed reference counting errors associated with mounted filesystems
+	* Added fat_getattrib() and fat_setattrib()
+	* Added statfs() to fs layer and to FAT
+	* Correct file name extension in tools/zipme.sh
+	* Fix error in dependencies in 8051/2 Makefile
+	* sched/Makefile: Don't build sleep() or usleep() if signals are disabled
+	* sched/sched_setparam.c: Remove redundant disabling of interrupts
+	* sched/usleep.c: Fixed nsec calculation
+	* lib/lib_strcspn.c: Function incorrectly named strspn().
+	* examples/ostest/main.c:  Errors in SDCC version of a memcpy() call
+	* examples/ostest/sighand.c: Don't call fflush() if streams are disabled
+	* include/limits.h, include/time.h, sched/clock_internal.h: A support for
+	  using selectable system timer frequency.
+	* Fixed error in mountpoint related conditional compilation introduced
+	  in 0.2.5
+	* Restructured some Makefiles to better handle enabling and disabling
+	  NuttX features without having so much conditional compilation in the
+	  source files.
+	* tools/mkconfig.c: No longer depends on asprintf() and _GNU_SOURCE and
+	  so should now build in non-GNU, non-GLIBC environments.
+	* include/nuttx/compiler.h: Fix for using SDCC with the Z80.
+	* include/assert.h & arch/pjrc-8051/src/up_assert.c: SDCC does support
+	  __FILE__and __LINE__ (not tested)
+	* examples/ostest/barrier.c: Don't call usleep() when signals are
+	  disabled.
+
+0.2.8 2007-07-02 Gregory Nutt <gnutt@nuttx.org>
+	* tools/Makefile.mkconfig: Under Cygwin, executable has a different name
+	* tools/mkdeps.sh & arch/arm/src/Makefile: Corrected a problem makeing dependencies
+	* tools/zipme.sh: Force directory name to be nuttx-xx.yy.zz
+	* fs/fs_opendir.c: Correct errors in semaphore usage that can cause deadlock.
+	* lib/lib_getopt.c: Added getopt() support
+	* examples/nsh/:  NSH now supports cat, mount, umount, and mkdir.  ls supports
+	  -l -s, and -R
+	* Added basic OS support to manage environment variables:  environment
+	  storage, cloning on task creation, sharing on pthread creation, destruction
+	  on thread/task exit.
+	* Add environment variables APIs:  environ, getenv, putenv, clearenv, setenv,
+	  unsetenv
+	* Correct an error in realloc() when the block is extended "down" in memory.
+	  In this case, the old memory contents need to be copied to the new location
+	  and an allocated bit was not being set.
+	* examples/ostest/: Added an environment variable test.
+	* examples/nsh/: Break into several files.
+	* lib/: Added strrchr, basename, dirname
+	* examples/nsh/: Add cp, rm, rmdir, set, unset commands. echo will now print
+	  environment variables.
+
+0.3.0 2007-11-06 Gregory Nutt <gnutt@nuttx.org>
+
+	* Imported uIP into the tree (see
+	   http://www.sics.se/~adam/uip/index.php/Main_Page)
+	* Adding socket(), bind(), connect()
+	* Added snprintf()
+	* Added send() and sendto(); integrate write() and close() with socket descriptors.
+	* Added recv() and recvfrom().
+	* Added getsockopt() and setsockopt()
+	* Documentation updated to address socket interfaces.
+	* Implemented receive timeouts via setsockopt(SO_RCVTIMEO).
+	* Provide support for multiple network devices
+	* Implement socket ioctl() calls to set addresses
+	* Added listen() and accept()
+	* Added DM90x0 Ethernet driver
+	* ARP timer is now built into the network layer
+	* Basic client functionality verified: TCP socket(), bind(), connect(), recv(), send().
+
+0.3.1 2007-11-19 Gregory Nutt <gnutt@nuttx.org>
+
+	* Separated net/uip/uip.c into several functions in several files.
+	* Corrected a TCP problem where packets were dropped because there was no
+	  recv() in place but the packet was being ACKed.  There are still TCP
+	  recv buffering issues, but this is part of a larger buffering issue.
+	* Basic server functionality verified: TCP listen(), accept()
+	* Fix DM90x0 driver problem that caused TX overruns
+	* Add strncmp()
+	* Added TCP/IP read-ahead buffer to minimize failed ACKs and packet loss.
+
+0.3.2 2007-11-23 Gregory Nutt <gnutt@nuttx.org>
+
+	* Add strcat() and strncat()
+	* Integrated uIP micro webserver
+	* Corrected a serious bug in TCP queue management
+	* Fix leak in socket close logic
+	* Add TX notification to driver so that it can respond faster to
+	  the availability of TX data.
+	* Moved urgent data info into device structure.
+	* TCP and ICMP protocols can now be disabled.
+	* Added UDP test in examples/udp
+	* Verified/debugged UDP socket(), bind(), sendto() and recvfrom() logic
+	  using examples/udp
+	* recvfrom() and accept() now correctly return the remote address.
+	* Fixed computation error in ntohl().
+
+0.3.3 2007-11-28 Gregory Nutt <gnutt@nuttx.org>
+
+	* Removed unused uIP files
+	* sched/, mm/, and net/ subsystem debug can not be selectively enabled/disabled
+	* Correct socket close logic: needs to disconnect TCP socket on close
+	* uIP webserver now seems to be fully functional
+	* fs/ and lib/ subystem debug can not be selectively enabled/disabled
+	* Added vsnprintf
+	* Integrated uIP telnetd
+	* Add missing logic to read-ahead buffer logic
+	* examples/nettest uses larger buffers
+	* Improved ACK handling in send() to better handler deferred acknowledgements
+	  and polling intervals.  Greatly improves send performance.
+
+0.3.4 2007-12-10 Gregory Nutt <gnutt@nuttx.org>
+
+	* Added and partially verified DHCP server logic (netutils/dhcpd)
+	* Fix BROADCAST=y compilation problems
+	* Fix UDP recvfrom timeout bug
+	* Correct processing of input UDP broadcast packets.
+	* Verfied basic DHCP client functionality (netutils/dhcpc)
+	* Implemented send() timeout logic
+	* Added and verified a TELNETD front end to NSH (examples/nsh)
+	* Add a skeleton Ethernet device driver (drivers/net/skeleton.c)
+	* Added C5471 Ethernet device driver (arch/arm/src/c5471/c5471_ethernet.c)
+	* Found and fixed several problems in uIP when compiled for ARM with optimization.
+
+0.3.5 2007-12-18 Gregory Nutt <gnutt@nuttx.org>
+
+	* Added inet_ntoa() and ether_ntoa()
+	* Added netdev_foreach() to support traversal of registered network devices
+	* Added support for 'ifconfig' command to NSH (examples/nsh)
+	* Moved MAC and Ethernet definitions to net/ethernet.h
+	* Fix sim and DM90x0 compilation errors introduced in 0.3.4
+	* Fixed errors in C5471 configuration files for examples/uip
+	* Modified DHCPC (netutils/dhcpc) so that it should work in environments where
+	  there are more than one DHCPD server.
+	* NSH ifconfig command now shows uIP status as well (examples/nsh)
+
+0.3.6 2008-01-06 Gregory Nutt <gnutt@nuttx.org>
+
+	* Changes for use with SDCC compiler
+	* Added a simulated z80 target
+	* Fix deadlock errors when using stdio but with no buffering
+	* Add support for Pascal P-Code interpreter
+
+0.3.6.1 2008-01-07 Gregory Nutt <gnutt@nuttx.org>
+
+	* The initial 0.3.6 release including an error that prevented
+	  building successfully if the Pascal add-on was
+	  was not present.
+
+0.3.7 2008-01-31 Gregory Nutt <gnutt@nuttx.org>
+
+	* Added support for the Zilog Z16F using the Zilog Z16F2800100ZCOG
+	  Development Kit.
+	* Add support toolchains that do not support making of dependencies
+	* Fix Cygwin build with spaces in directory names
+	* Name make system changes to deal with non-GNU toolchains (i.e., Zilog)
+	* Add support for Windows native toolchains that cannot follow Cygwin soft links
+	* Modified serial driver interface to handle hardware with non-16550A-like
+	  interrupt architecture (like the Z16F)
+	* Added a "dumb" serial console driver to simplify OS bringup
+	* Corrected a bug that caused the errno value of one task to be clobbered
+	  when a different task exits.	Affects all architectures.
+
+0.3.8 2008-02-10 Gregory Nutt <gnutt@nuttx.org>
+
+	* Added a test case to verify the Pascal P-Code interpreter
+	* Added /dev/zero
+	* 'errno' is now defined to be *get_errno_ptr() with no name conflicts
+	* Added lseek() and fseek()
+	* Integrated Pascal interpreter test case on the simulation platform.  Needs
+		  pascal-0.1.1.
+	* Add Pascal test case on the z16f platform.  Needs pascal-0.1.2 (does not
+		  yet work due to some tool issues).
+	* C buffered I/O fixes:
+	  - Fix fflush() return value,
+	  - Add correct fflush behavior when the FILE argument is null.
+	  - Add logic to a correctly handle read/write access on the same FILE
+	  - fseek() flushes read/write data when before moving the file pointer
+	  - When read data is flushed, reposition the file pointer to account for
+		buffered, but unread data
+	* Pascal P-Code files are now standardized to big-endian for portability
+	* Fix a build problem with z80 and SDCC 2.7.0 (format of a map file changed)
+	  (see bug 1887170)
+	* Pascal P-Code runtime now compiles with the SDCC toolchain.
+	* Added a generic CAN driver.  This driver is untested as of this writing.
+	* Corrected DM320 UART configuration problem
+
+0.3.9 2008-03-09 Gregory Nutt <gnutt@nuttx.org>
+
+	* Began adding support for the ZiLOG Z8Encore! microcontroller for the Z8Encore000ZCO
+	  development board and the Z8F6403 part.
+	* Fix broken 'clean' target on z80sim configurations
+	* Re-structure arch/z80 to provide support for all ZiLOG 8-bit microcontrollers (ez8
+	  in particular for now).
+	* Add support for TRS80-Model 3 based on the xtrs emulation (http://www.tim-mann.org/xtrs.html)
+	  Per patch from Jacques Pelletier.
+	* In all shell scripts, change #!/bin/sh to #!/bin/bash to resolve problems in
+	  Ubuntu where /bin/sh is a link to dash.
+	* Z8Encore! port verified on ZDS-II instruction set/chip simulator.
+
+0.3.10 2008-05-15 Gregory Nutt <gnutt@nuttx.org>
+
+	* Add support for the ZiLOG EZ80Acclaim microcontrooler (EZ80F91 chip).
+	* Add configuration for the ZiLOG z8f64200100kit development kit, Z8F6423 part.
+	* Add configuration for the ZiLOG ez80f0910200kitg development kit, EZ80F091 part.
+	* Correct critical list handling errors in task shutdown logic: One in timer
+	  deletion logic (timer_delete.c) and one in stream logic (lib_init.c) reported
+	  by kwonsk.
+
+0.3.11 2008-06-01 Gregory Nutt <gnutt@nuttx.org>
+
+	* Add support for recursive mutexes.
+	* Eliminate a memory leak: contained watchdog instance was not being
+	  deleted with a POSIX timer was deleted reported by kwonsk.
+	* Eliminate a deadlock condition in opendir() reported by kwonsk.
+	* Fix several FAT filesystem problems reported by kwonsk (Changes not yet
+	  verified).
+	* Host simulator no longer uses Linux system calls directly; Now works with Cygwin.
+	* Fix an error that occurs when a POSIX timer is deleted by the timer signal handler.
+	* Add logic to allow the examples/ostest to be run repetitively as an endurance test.
+	* Add a ramdisk block driver
+
+0.3.12 2008-08-10 Gregory Nutt <gnutt@nuttx.org>
+
+	* Improved solution to POSIX timer lifetime controls bug fixed in 0.3.11.
+	* Add test for recursive mutexes
+	* Correct bug in recursive mutex logic
+	* Add mkfifo()
+	* Add pipe() and test for both pipes and fifos
+	* Attempts to open a FIFO will now block until there is at least one writer
+	* Add test/Fixed errors in FIFO reader/writer interlocks
+	* Removed limitation: task_create() was only dup'ing 3 file descriptors (now
+	  dups all open file descriptors).
+	* Added a test for redirection of stdio through pipes
+	* Fixed error in dup and dup2: Must call open/close methods in fs/driver so that
+	  driver can correctly maintain open reference counts.
+	* Same issue on closing file descriptors in exit()
+	* Fixed in error in stdio flush logic.	Needed ssize_t vs size_t for error
+	  check.
+	* Moved all FAT related files from fs to fs/fat
+	* Implemented mkfatfs(), a non-standard API to create a FAT filesystem on a
+	  block device (not yet tested).
+	* Added a test for mkfatfs() on a RAM disk in examples/mount and verified
+	  basic mkfatfs functionality for FAT12.
+
+0.3.13 2008-09-01 Gregory Nutt <gnutt@nuttx.org>
+
+	* NSH: Added mkfatfs, mkfifo, sleep, usleep and nice commands
+	* Fixed problem with console input in Cygwin-based simulator; NSH now works
+	  with simulator.
+	* NSH will now execute commands in background
+	* sched_get_priority_max/min returned error on SCHED_RR
+	* Removed duplicate getenv() implementation in /lib
+	* Correct detection of End-of-File in fgets
+	* NSH: Implemented sh and crude script handler
+	* Fix prototype of read() and write(). Need to use ssize_t and size_t, not
+	  int and unsigned int.
+	* NSH now supports redirection of command output
+	* NSH can now use both telnet and serial front ends together
+	* NSH: $variable can be used for any command value
+	* Fixed an error in opendir() that could cause an assertion to fail
+	  inappropriately.
+	* Correct an error in the FAT that caused files opened for writing with
+	  O_APPEND to fail.  The file was not being properly positioned to the
+	  end of the file in that case.
+	* NSH now supports last exit status $?
+	* NSH now supports if-then[-else]-fi construct
+	* NSH now supports comments beginning with '#'
+	* NSH now supports commands to inspect and modify memory
+	* NSH cat command now supports multiple files on command line
+	* Add chdir() and getcwd()
+	* Fix error in getopt() when called with argc==1
+	* Fix error in stat() when used on the root directory
+	* NSH: Add cd and pwd commands and current working directory to all NSH
+	  commands that refer to paths.
+	* Fix errors and warnings introduced into Linux sim build because of recent
+	  Cygwin-based sim changes
+	* NSH: Add mem command to display heap usage
+	* Added telnet NSH configuration for Neuros OSD.
+	* Basic integration of concurrent telnet/serial NSH functional on Neuros
+	  OSD.
+	* Fixed a critical bug that affects the way that environment variables are
+	  shared amongst pthreads.
+	* uIP port enhance to support multi-threaded, concurrent socket access.  So,
+	  for example, one thread can be reading from a socket while another is
+	  writing to the socket.
+
+0.3.14 2008-09-08 Gregory Nutt <gnutt@nuttx.org>
+	* FAT FS now uses position variable in struct file.  This simplifies operations
+	  like ftell().
+	* fseek() needs to discard bytes buffered by ungetc().
+	* Corrected ftell() return value.
+	* Added fsetpos() and fgetpos().
+	* NSH: Now supports 'test' and '[' commands
+	* Correct error in send() timeout logic.
+	* Correct error in multi-threaded socket handling in send() and sendto().
+	  Outgoing data could overwrite incoming data.
+	* Add support to uIP for application access to ICMP protocol stacks; Add
+	  ping request logic.
+	* NSH: Add ping command
+	* Correct IP checksum calculation in ICMP and UDP message send logic.
+	* NSH: Created an HTML document and a more detailed README file describing NSH.
+	* Added basic TFTP client logic (netutils/tftpc).
+	* NSH: Add get and put commands to support TFTP get and put operations.
+	* NSH: Added a mkrd command that will create a RAMDISK that can be formatted
+	  and mounted.
+	* Corrected a critical bug that prevent recvfrom from receiving packets from
+	  any remote UDP port.
+	* NSH: Add hexadecimal dump command (xd)
+	* Fixed several critical bugs with regard to fat reading and writing and FAT12
+	  accesses.  Basically the FAT FS only worked with my tiny test files and test
+	  cases.  A lot of stronger FAT tested is needed!!
+	* Fixed another FAT bug in implementation of FAT lseek; this prohibit correct
+	  random access to large files.
+
+0.3.15 2008-09-20 Gregory Nutt <gnutt@nuttx.org>
+	* Added support for ROMFS filesystem.
+	* Added a simple test the ROMFS filesystem (examples/romfs)
+	* NSH: Use ROMFS to provide an option for a start-up script at /etc/init.d/rcS
+	* Add definition of BIOC_XIPBASE ioctl and implement in RAM disk block driver.
+	  This is a low level requirement for eXecute In Place (XIP) support.
+	* Add a FIOC_MMAP to perform memory mapping of a file and implemented the
+	  ioctl command in the ROMFS filesystem.  This is a requirement for eXecute
+	  In Place (XIP) support.
+	* Add mmap() API with restricted capability (only for XIP support)
+	* Extend ROMFS test at /examples/romfs to verify mmap() and XIP support.
+	* Add support for Intel Hex format output using objcopy
+	* Completed the basic port of the NXP LPC2148 on the mcu123.com board.
+	  The basic port includes successful booting, timer interrupts, serial console,
+	  succesfully passing the examples/ostest, and a NuttShell (NSH) configuration.
+	* ARM architectures now support drivers/lowconsole.c
+
+0.3.16 2008-10-10 Gregory Nutt <gnutt@nuttx.org>
+	* Added header files defining a common USB device controller architecture
+	* Added USB device side driver for the LPC214x
+	* Correct the frequency of system timer interrupts in the NXP LPC214x port
+	  (off by 20x in nuttx-0.3.15)
+	* Add an option to set aside a separate stack for interrupt handling (ARM only).
+	  This is useful when memory is constrained, there are multiple tasks, and
+	  the interrupt stack requirement is high (as when USB is enabled).
+	* Added USB serial class device side driver (emulates Prolific PL2303
+	  serial-to-USB adaptor)
+	* Add LPC214x USB serial configuration; Add examples/usbserial test
+	* Added USB device side driver for the DM320 (untested at initial release)
+	* Fixed an error in a previous (post 0.3.15) check-in that broke the LPC214x
+	  system timer.
+	* Fixed serial driver bugs related to (1) open counts and (2) recognizing
+	  O_NONBLOCK on read.
+	* Fixed an error in read(); it was not setting the errno on errors returned
+	  from the driver.
+
+0.3.17 2008-10-28 Gregory Nutt <gnutt@nuttx.org>
+	* Incorporate patch "[2164503] nuttx-0.3.16 does not build for ARM with USB disabled"
+	* Reduced the amount of memory reserved for USB serial control requests.  It
+	  was unnecessarily large.
+	* Added LPC214x SPI1 driver to interface with MMC on mcu123.com board.
+	* Added a simple SPI-based MMC/SD block driver
+	* NSH: Add LPC214x-specific support to NSH; NSH now mounts any SD cards in the slot.
+	* FAT: Fix access to unaligned 32-bit values in partion table (start sector & size)
+	* Fixed a problem with a un-initialized variable in the USB serial driver.
+	* Added USB storage NXP LPC214x configuration
+	* Added a test for USB storage under examples/usbstorage
+	* Fixed a bug in the LPC214x USB driver: It was not properly clearing a HALTed
+	  endpoints (other than EP) on receipt of CLEAR FEATURES request.
+	* Added USB storage class device side driver (BBB)
+	* Fixed a bug in the LPC214x USB driver: It was not properly handling request buffers
+	  larger then the endpoint's max packet (DM320 driver also fixed, untested)
+	* Added logic to the USB device interface:	A bit is needed to force the driver to
+	  to terminate an IN transfer with a short packet (zero-length if necessary).
+	* Fix an error in the NXP LPC214x USB device driver that was causing corruption of
+	  the request queue (M320 driver also fixed, untested)
+	* Correct another error in the NXP LPC214x USB device driver that caused read failures
+	  when the request buffer size was larger than maxpacket.
+	* Numerous corrections/extensions to the USB tracing logic included in 0.3.16 (but
+	  not integrated until 0.3.17)
+	* Fixed another bug in the NXP LPC214x USB device driver:  After a stalled endpoint
+	  is resumed (view CLEAR FEATURE), we must restart the IN (outgoing) queue.
+
+0.3.18 2008-11-16 Gregory Nutt <gnutt@nuttx.org>
+	* Added port for the STMicro STR71x processor and configuration for the Olimex STR-P711
+	  board (STR71x testing is stalled because I have been unable to get OpenOCD to
+	  communicate with my JTAG wiggler on Linux).
+	* Fix race condition workaround delay in LPC214X SPI logic.  This was also the cause of the
+	  very bad MMC/SD performance.
+	* Began port of the Hitachi SH-1 using the SH-1/US7032EVB1 board
+	* Re-built all configurations that use SDCC and Zilog toolchains to make sure they still
+	  build (they didn't, but they do now).
+	* Fixed several erroneous "list empty" checks in the CAN driver.
+	* Hitachi SH-1 passes (reduced) examples/ostest; the examples/nsh test still fails.
+	  There are remaining instabilities that make the port un-usable.  The nature of these is
+	  not understood; the behavior is that certain SH-1 instructions stop working as advertised.
+	  This could be a silicon problem, some pipeline issue that is not handled properly by the
+	  gcc 3.4.5 toolchain (which has very limit SH-1 support to begin with), or perhaps with the
+	  CMON debugger.  At any rate, I have exhausted all of the energy that I am willing to put
+	  into this cool old processor for the time being.
+	* Renamed configuration item CONFIG_PROC_STACK_SIZE as CONFIG_IDLETHREAD_STACKSIZE:  It now
+	  only controls the size of the stack for the IDLE thread.	Added CONFIG_USERMAIN_STACKSIZE:
+	  This is the size of stack used with the user_start() thread is created.  The two stacks
+	  no longer have to be the same.
+	* Add a loop device that converts a file into a block device.
+	* Each NSH command can not be disabled through a configuration setting. All of these
+	 settings make the configuration of NSH potentially complex but also allow it to squeeze
+	  into very small memory footprints.
+	* Added a block to character (BCH) driver.	This is kind of the reverse of the loop
+	  device; it allows you access a block device like a character device.
+	* Added strcasecmp() and strncasecmp()
+	* NSH: Added the 'dd' command
+	* NSH: Added the 'losetup' command
+	* Fixed a FAT bug:	After recent changes, it would mount a (invalid) FAT file system
+	  even if the medium is not formatted!
+	* Corrected two important errors in FAT lseek implementation: (1) the sectors-per-cluster
+	  value was being reset to "1" and (2) important lseek logic was omitted when the seek
+	  position was zero.
+	* Fixed a bug in getopt().	It would fail if on certain combinations of terminal argument
+	  types.
+
+0.3.19 2008-11-26 Gregory Nutt <gnutt@nuttx.org>
+	* Add poll() and select() APIs (in the initial check-in, these work only with character devices) 
+	* Add poll() methods to /dev/null, /dev/zero, pipes, fifos, and serial drivers.
+	* Add examples/poll for testing poll() and select()
+	* Fix hostile behavior of getc, fgetc, getchar, etc.: the serial driver was waiting for a
+	  full buffer of read data before return.  This means that getc would stall when it needed
+	  to refill the input buffer. The old behavior (read full blocks) might be useful in other
+	  contexts, so it is still available within the driver as a configuration option.
+	* Implement poll() and select() support for TCP/IP sockets
+	* Fixed an important bug in the TCP/IP buffering logic.  When TCP/IP read-ahead is enabled
+	  and not recv() is in-place when a TCP/IP packet is received, the packet is placed into
+	  a read-ahead buffer.	However, the old contents of the read-ahead buffer were not being
+	  cleared and old data would contaminate the newly received buffer.
+	* Implemented support for connection backlog.  The size of the backlog is specified by the
+	  second argument of the standard listen() API.  Hooks are provided to support poll()/select()
+	  waiting for connections, with a subsequent call to accept() to use the backlogged connection.
+	* Fixed a minor bug in accept().  It should allow the address and addresslen values to be NULL
+	* Added first-cut definition for a framebuffer interface (and simulated framebuffer for testing
+	  purposes only)
+	* Added fixed precision math support
+	* Added some color converson routines into what may become a real graphics library someday.
+	* Added a framebuffer driver for the DM320 (untested on initial check-in)
+	* Network: add support for outgoing multicast addresses
+	* Added some rasterizers to the graphics library
+
+0.4.0 2008-12-06 Gregory Nutt <gnutt@nuttx.org>
+	* Initial release of a tiny windowing system for NuttX
+	* Add fixed precision sin() and cos() (not well tested at initial check-in)
+	* Add an X11-based simulated framebuffer driver
+	* The simulated target now has an option (CONFIG_SIM_WALLTIME) that will let the simulation
+	  run in more-or-less realtime.
+	* Added more extensive window support:  frames, toolbars, etc.
+	* Added support for bitmap fonts
+	* Integrated the new font support with a font test in examples/nx
+	* Add documentation for NX graphics subsystem
+
+0.4.1 2009-02-06 Gregory Nutt <gnutt@nuttx.org>
+	* Added board support for the ZiLog eZ80Acclaim! ez80f910200zco Development Kit.
+	* Fixed several compilation errors in fixed precision math library when built
+	  against toolchains that do not support 64-bit type 'long long'.
+	* Fix errors in some function prototypes in dirent.h
+	* Add eZ80F91 EMAC driver
+	* Fix recvfrom() compilation error: only noted under ZDS
+	* Updated all ARM Make.def files to work with gcc 2.4.2 (However, there are
+	  still some build issues associated with that toolchain in use of arm-elf-objcopy
+	  -- see the TODO.txt list for details)
+	* Fix problems with Z16F and eZ80 compilation introduced with recent changes.
+
+0.4.2 2009-02-28 Gregory Nutt <gnutt@nuttx.org>
+
+	* M16C: Add support for the Renesas M16C MCU and the SKP16C26 StarterKit. However, 
+	  the target cannot be built because the GNU m16c-elf-ld link fails with 
+	  the following message:
+
+		m32c-elf-ld: BFD (GNU Binutils) 2.19 assertion fail /home/Owner/projects/nuttx/buildroot/toolchain_build_m32c/binutils-2.19/bfd/elf32-m32c.c:482
+
+	  Where the reference line is:
+
+		/* If the symbol is out of range for a 16-bit address,
+		   we must have allocated a plt entry.	*/
+		 BFD_ASSERT (*plt_offset != (bfd_vma) -1);
+
+	  No workaround is known at this time.	This is a show stopper for M16C.
+
+	* eZ80Acclaim!: Fix interrupt vectors positioning; they were being positioned
+	  wrong by 64 bytes (Kevin Franzen).
+	* eZ80Acclaim!: Corrected some stack handling errors during interrupt handling
+	   context save and restore (Kevin Franzen).
+	* eZ80Acclaim!: Corrected vector intialization logic (Kevin Franzen).
+	* eZ80Acclaim!: Corrected overflow problem in the calculation of UART baud rate
+		divisor, the system timer divisor, and the EMAC poll timer.
+	* eZ80Acclaim!: Fixed GPIO pin configuration get serial output
+	* eZ80Acclaim!: Correct stack overflow in ostest example configuration
+	* eZ80Acclaim!: Fixed restoration of interrupts state on interrupt level context swith.
+
+0.4.3 2009-03-04 Gregory Nutt <gnutt@nuttx.org>
+
+	* z8Encore! and eZ80Acclaim!: Fixed the serial driver initialization sequence
+	* eZ80Acclaim!: Fixed error in vector table:  Missing space set aside for the
+	  "unused" vectors.  As a result, all vectors above timer4 were skewed.
+	* eZ80Acclaim!: Fixed logic error in UART interrupt handler.
+	* Many fixes in FAT file system and in NSH for correct compilation with ZDS-II
+	* eZ80Acclaim!: Added and verified a NuttShell (NSH) configuration.
+	* eZ80Acclaim!: Correct endian-ness; defconfig files said BIG endian.
+	* Restructured parts of the uIP port for correct compilation with ZDS-II
+	* eZ80Acclaim!: Complete basic integration of the eZ80F91 EMAC driver.	The
+	  driver is basically functional and should mature prior to the 0.4.3 release.
+	* Implemented priority inheritance logic for POSIX semaphores.	Because the pthread
+	  mutexes are built on semaphores, they will have this property as well.
+
+0.4.4 2009-03-29 Gregory Nutt <gnutt@nuttx.org>
+
+	* examples/nsh:  A debug option was left on that can (and does) cause
+	  infinite loops and stack overflows.
+	* net/uip: Correct calculation of checksum on ICMP ping response.
+	* examples/dchpd: Added a tiny DHCP server example
+	* net/uip: Correct UDP bind behavior.  It should select a valid port number
+	  if it receives a port number of zero.
+	* netutils/dhcpd:  Corrrect for ZDS compiler.  Fix issue with re-use of a
+	  port number. Fixed a number of broadcast-related problems.
+	* eZ80Acclaim!: Add a tiny webserver configuration
+	* eZ80Acclaim!: Fixed an important bug in the EMAC Tx timeout logic. It was
+	  always timing out when the load was heavy and worse, for some reason,
+	  resetting the Tx function caused unexpected registers to be reset in
+	  the Rcv function was well.
+	* Z80: Patch incorported: "[2696648] Z80: interrupt flag stored in parity bit"
+	  (submitted by JPelletier).  The is the same fix that was needed for the
+	  eZ80 and fixed in 0.4.2.
+	* netutils: Added logic to support a simple wget() function
+	* examples/wget: Added a test for wget() (untested -- see NOTE)
+	* lib/strncasecmp: Fix cut'n'paste error in function name.
+	* NSH: Added wget command (untested -- see NOTE).
+	* examples/sendmail: A simple sendmail example (untested -- see NOTE)
+
+	NOTE: Features related to wget and sendmail are not tested on the target platform
+	in this release and, hence, most likely have problems.	I don't have the correct network
+	setup to perform that testing now (I'm in a hotel).
+
+0.4.5 2009-04-19 Gregory Nutt <gnutt@nuttx.org>
+
+	* Add an enumeration argument to the SPI chip select and status methods so
+	  that the interface can handle more than one device.
+	* eZ80Acclaim!: Add a generic SPI driver for all eZ80 boards.
+	* Add a setmode() method to the SPI interface to handle parts with differing
+	  mode requirements.
+	* include/nuttx/i2c.h: Defined a standard I2C interface
+	* eZ80Acclaim!: Add an I2C driver.
+	* eZ8Encore!: Add an I2C driver.
+	* Add support for the Freescale i.MX1/L architecture and a configuration for
+	  the Freescale MX1ADS development board.
+	* examples/helloxx: Added a simple C++ hello world example
+	* include/css: Added std header files
+	* libxx: New C++-only directory provides support for minimal C++ applications
+
+0.4.6 2009-05-19 Gregory Nutt <gnutt@nuttx.org>
+
+	* Change SPI interface so that is can accomodate interfaces where the
+	  number of bits per word is greater an 8 (such as with many 9-bit display
+	  interfaces). -- this might have broken a few things which will need to
+	  be retested!
+	* arch/arm/src/imx: Added i.MX SPI driver
+	* SPI: Add a method to set the number of bits per word.  Also add an
+	  alternative interface for so that (eventually) I can phase the sndblock
+	  and recvblock methods and replace them with a single exchange method
+	* Build:  objcopy fails with toolchains that use newer GCC and binutils.  The
+	  following arguments need to be included in the objcopy command line "-R .note
+	  -R .note.gnu.build-id -R .comment"  This has been fixed in arch/arm/src/Makefile,
+	  but other architectures may have the same problem.  Thanks to Dave Marples
+	  for verifying this.
+	* configs/eagle100/ostest: Added support for the MicroMint Eagle100 board. 
+	  This board has a Luminary LM3S6918 Cortex-M3. Added a configuration to build
+	  examples/ostest.
+	* arch/arm/src/lpc214x: Add configuration option to enable fast GPIO (vs.
+	  legacy, "slow" GPIO) for LPC214x.
+	* arch/arm: Restructured the arch/arm directory structure to better support ARM
+	  and Cortex-M3.
+	* sched/: pthread_create() must return a (non-negated) errno value on failure.
+	* configs/eagle100/nsh: Add a NuttShell (NSH) configuration for the Eagle-100
+
+0.4.7 2009-05-29 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/lm3s: Added an Ethernet driver for the LM3S6918
+	* configs/eagle100/nettest: Added an examples/nettest configuration for the
+	  Micromint Eagle100 board.
+	* Documentation/NuttxPortingGuide.html: Added a section on NuttX device drivers.
+	* configs/eagle100/httpd: Added an examples/uip configuration for the
+	  Micromint Eagle100 board.
+	* arch/arm/src/lm3s: Added an SSI driver for the LM3S6918
+	* examples/nsh: Added MMC/SD support for the LM3S6918
+	* arch/arm/src/lm3s: Fix logic for setting and clearing output GPIOs (critical
+	  fix!).
+	* drivers/mmcsd: Found numerous errors in current MMC/SD SPI driver.  Bad frequency
+	  calculation based on CSD settings, inappropriate timeouts, odd code that looks like
+	  a bad search and replace.  Also needs support for SDHC ver 2.x.  New MMC/SD is
+	  largely redesigned and probably non-functional in the first check-in.
+	* drivers/mmcsd: Changes verified on 4Gb Kingston microSHDC card and on a 2Gb
+	  SanDisk microSDC card on the Eagle100 platform.
+	* fs/fat: With the 4Gb card, the first tests of FAT32 were (finally) performed.
+	  Found and corrected a problem that prevented use of FAT32: It was not updating
+	  the sector cache before checking the FAT32 FSINFO sector.
+	* configs/eagle100/*/Make.defs:  Added configuration options that should make
+	  it possible to build NuttX for the Eagle100 using CodeSourcery 2009q1 toolchain
+	  and the devkitARM GNU toolchain.
+	* configs/mcu123-lpc214x/src: Corrected some logic in the LPC2148 SPI receive block
+	  logic.  Re-verified SDC ver1.x support with 1Gb Toshiba SDC, 1Gb PNY SDC, and
+	  4Gb Kingston SDHC.  There are CMD0 issues with the 2Gb SanDisk SDC on this board.
+	* fs/fs_mount.c: Corrected error handling that could cause a deadlock on certain
+	  mount() failures.
+
+0.4.8 2009-06-13 Gregory Nutt <gnutt@nuttx.org>
+
+	* lib/lib_*stream.c: Extend internal stream logic to support incoming streams.
+	* arch/arm/src/str71x: Serial output is now correct and timer interrupts are
+	  working.	The test at configs/olimex-strp711/ostest passes.  This means that
+	  the basic STR-P711 port is complete.
+	* configs/olimex-strp711/nsh:  Add and verified a NuttShell (NSH) configuration
+	  for the STR-P711.
+	* arch/arm/str71x/str71x_serial.c:	The STR711 interrupt driven serial driver
+	  finally works after some extradinary measures to handle missed interrupts.
+	  NSH is fully functional on the Olimex STR-P711 board.
+	* example/nsh: Moved architecture specific files from NSH directory to board-
+	  specific directories.
+	* config/olimex-strp711/src/up_nsh.c:  Add an NSH board specific directory for
+	  for the Olimex STR7P11 board.
+	* Fixed build of LM3X6918 using the CodeSourcery Windows native toolchain.	There
+	  were lots of issues with Cygwin paths and Cygwin symbolic links.	These changes
+	  may work with the devarmKIT as well, but that remains untested.
+	* The NXP LPC2148 and STR711 targets can now also be built using the CodeSourcery
+	  or devkitARM Windows native toolchains.
+
+0.4.9 2009-06-26 Gregory Nutt <gnutt@nuttx.org>
+
+	* Add strtoll() and strtoull(); Add macros for atol() and atoll().
+	* dup() and dup2() will now clone socket descriptors
+	* All socket descriptors are now cloned when a new task is started via
+	  task_create().
+	* Add configuration options to suppress or eliminate cloning of file
+	  and/or socket descriptors when a new task is started by task_create():
+	  CONFIG_FDCLONE_DISABLE, CONFIG_FDCLONE_STDIO, CONFIG_SDCLONE_DISABLE.
+	* Use of C++ reserved word 'private' in C header files causes problems
+	  for C++ that include them.
+	* Added 'binfmt' support to allow execution of programs in a file system,
+	  binding to NuttX symbols. A custom format call NXFLAT is used; this
+	  derives from http://xflat.sourceforge.net.  At present is supports on
+	  XIP execution from ROMFS file systems.  Initial check-in is untested
+	  and probably breaks many builds.
+	* examples/lib: Added qsort()
+	* examples/nxflat: Added support for symbol tables
+	* Correct logic that creates compiler include paths.  On Cygwin, the
+	  include paths for Cygwin-based GCC were being converted to windows
+	  native paths.  That causes many problems -- breaking dependencies
+	  for one.
+	* Fixed an important bug in ROMFS.	The initial XIP offset was set
+	  incorrectly so if sector zero was read first, there was a bad read.
+	  I don't know how it worked before.
+	* arch/arm/src/common/up_use_stack.c.  Fixed a fatal stack setup error.
+	  This file has been around for a long time, but I don't think it has
+	  every been used before (i.e., prior to the NXFLAT logic)
+
+0.4.10 2009-08-08 Gregory Nutt <gnutt@nuttx.org>
+
+	* lib/: Added some basic regex-subset, pattern matching functions
+	* lib/: Greatly simplified mktime() and gmtime_r().  The Gregorian and
+	  Julian time calculations were interesting, but not necessary in the
+	  typical embeddd system.
+	* sched/: Added gettimeofday().  This implementation is simply a thin
+	  wrapper around clock_gettimer().
+	* lib/: Add gmtime(), localtime(), and strftime()
+	* binfmt/: Add exec().	This is just a wrapper that executes both
+	  load_ and exec_module() in a more familiar manner.  It is not consistent
+	  with more standard exec() functions, however, because (1) it returns
+	  and (2) it requires symbol table arguments.
+	* lib/: Add fileno()
+	* examples/ostest: Several of the tests used a big, hard-coded stack size
+	  when creating test threads (16Kb stacksize).	The stack size should
+	  be controlled by the .config file or the OSTest won't work on platforms
+	  with memory constraints.
+	* netutils/thttpd: An initial port of Jeff Poskanzer's THTTPD HTTP server.
+	  See http://acme.com/software/thttpd/.
+	* examples/thttpd: A basic test program for THTTPD
+	* configs/eagle100/thttpd: A build configuration for THTTPD on the Micromint
+	  Eagle-100 LMS6918 (Cortex-M3) board.
+	* configs/ntosd-dm320/thttpd: A build configuration for THTTPD on the Neuros
+	  DM320 platform.
+	* lib/: Added strstr() and strpbrk().
+	* net/recvfrom.c and net/accept(): Sockets now support some non-blocking
+	  operations, specifically for (1) TCP/IP read operations when read-ahead
+	  buffering is enabled, and (2) TCP/IP accept() operations when TCP/IP
+	  connection backlog is enabled.
+	* fs/fs_fcntl.c and net/net_vfcntl.c: Minimal support provided for fcntl().
+	  It can, at least, be used to mark sockets as blocking or non-blocking.
+	* net/net_close.c: Fix bug in close().	If reference count not set to zero
+	  then uip_tcpfree() will assert when DEBUG is enabled.
+	* net/accept.c: Fix bug in accept().  The logic expected parts of the
+	  return address structure to be initialized or it would return an error.
+
+0.4.11 2009-09-16 Gregory Nutt <gnutt@nuttx.org>
+
+	* fs/fs_read.c and fs/fs_write.c.  read() and write() to socket is the
+	  same as recv() and send() with flags = 0.  Fixed!
+	* net/recvfrom.c: Fix errors in return value from non-blocking socket read.
+	* lib/lib_strcasecmp.c and lib/lib_strncasecmp.c.  Use of post-incremented
+	  argument to macro caused strcasecmp() and strncasecmp() to fail.
+	* lib/lib_strstr.c:  Length of substring off by one causes false alarm
+	  sub-string matches.
+	* arch/arm/src/lm3s/lm3s_ethernet.c: Fix errors in LMS6918 FIFO length
+	  handling.  (1) The incorrect size of the Ethernet header was being
+	  subtracted on outgoing messages (4 vs 14), which caused outgoing messages to
+	  be a little too long.  (2) The size of incoming FIFO messages is 6 bytes
+	  larger than it expected (2 for the length and 4 for the FCS).  The unhandled
+	  extra two bytes of length cause the driver to sometimes read one too many
+	  words from the received FIFO (corrupting the next queued receive packet,
+	  if any).
+	* net/net_poll.c and net/uip/uip_tcpbacklog.c.	Fixed an important race condition
+	  bug in polling for connections.  The logic worked if the poll was inplace
+	  before the connection was received; but the poll failed to awaken if the
+	  connection was already pending in the backlog when poll() was called.
+	* net/net_close.c.	Fixed another important TCP/IP race condition bug:	If
+	  the host closes the TCP connection just before the target calls close(), then
+	  the close operation may hang indefinitely!
+	* net/net_tcppoll.c.  Removed an unnecessary check for outstanding, un-ACKed
+	  data.  The NuttX socket layer keeps track of ACKs and doesn't need this check;
+	  removing the check should improve write throughput
+	* Add DEBUG configuration option to enable debug console output without disabling
+	  optimization (and vice versa)
+	* Changed lots of occurrences of debug macro dbg() to lldbg().  dbg() uses
+	  stdout to output debug data.	That works fine unless (1) the dbg() macro
+	  is interrupt logic and the interrupted task has redirected stdout!  Most
+	  changes were in uIP.
+	* net/uip/uip_tcpinput.c.  Connection reference count was not being set correctly
+	  when a socket is created by accepting a new connection.  Since the reference
+	  count is bad, such sockets are not successfully duplicated when being passed
+	  to new tasks.
+	* net/net_clone.c.	Similarly, after a socket is cloned, its reference count
+	  was not being initialized.
+	* lib/lib_strstr.c.  Improperly incremented pointer could cause comparison
+	  failures.
+	* net/.  Connection reference count must always be set to zero before calling
+	  uip_tcpfree() or it could trigger a DEBUGASSERT that verifies that the
+	  reference count is zero before freeing a connection structure.
+	* net/uip/uip_listen.c.  uip_accept() consulted the wrong list to find the
+	  listener on a socket.  The previous logic worked most of the time, but
+	  occasionally picked the wrong listener.
+	* net/net_close.c and net/net_sockets.c.  Sockets were not being closed
+	  when a task exits.  If many server tasks are created and exit without closing
+	  sockets (such as with CGI tasks), then eventually, you will run out of sockets.
+	* netutils/thttpd.	Basic functionality of THTTPD is complete.	This includes
+	  serving up files from a file system and executing NXFLAT-based CGI programs
+	  and pipe the stdout back to the HTTP client.
+
+0.4.12 2009-10-17 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/stm32 and configs/stm3210e-eval.  Added basic support for the
+	  STMicro STM32, Cortex-M3 MCU.  The specific port is to the STMicro STM3210E-EVAL
+	  development board based around the STM32F103ZET6 MCU.
+	* configs/stm3210e-eval/RIDE.  Added a basic STMicro RIDE7 project that can be
+	  used to perform basic STM32 board bring-up (due to RIDE7 size limitations, it
+	  cannot be used for the full NuttX bring-up).
+	* configs/stm3210e-eval/ostest.  The STM32 now passes the basic NuttX OS test
+	  at examples/ostest.  The rest should be a piece of cake.
+	* configs/stm3210e-eval/nsh.  Added NuttShell (NSH) example.
+	* configs/stm3210e-eval/src/stm32102e-internal.h.  Fix on-board LED GPIO definitions.
+	* arch/arm/src/stm32/src/stm32/stm32_dma.c.  Added DMA channel support for the STM32
+	* arch/arm/src/stm32/src/stm32/stm32_spi.c.  Added a DMA-based SPI driver for the STM32.
+	* arch/arm/src/stm32/src/stm32/stm32_serial.c.	Finished interrupt-driven,
+	  USART console driver.  This makes NSH work perfectly.
+	* Things left to do for the STM32 deferred to the 0.4.13 release:  USB device driver,
+	  LCD driver and NX bringup on the eval board's display and MicroSD support.  An SPI
+	  driver was included in the 0.4.12 release, but is not yet tested.
+
+0.4.13 2009-11-04 Gregory Nutt <gnutt@nuttx.org>
+
+	* include/nuttx/mtd.h.	Added a simple interface definition to support some
+	  FLASH, EEPROM, NVRAM, etc. devices.
+	* driver/mtd/m25px.c.  Added a driver for SPI based FLASH parts M25P64 and M25P128.
+	* configs/stm3210e-eval/usbserial.	Add a USB serial configuration for the STM32.
+	  Depends on the STM32 USB driver.
+	* arch/arm/src/cortexm3/up_switchcontext.S & up_svccall.c.	Made an improvement
+	  to context switching.  There are two types of context switches:  interrupt
+	  context switches and background/user context switches.  This change should
+	  improve the performance of those background/user context switches by a factor
+	  of about two.
+	* arch/arm/src/stm32/: fix several typos in the serial logic.	It turns out
+	  that these typose don't make any difference as long as you use only one
+	  serial port and all uarts are configured the same.  But the typos are bugs
+	  waiting to happen in any other configuration.
+	* arch/arm/src/stm32/: You have to configure CTS/RTS function pins for USART
+	  2 and USART 3 even if you are not using flow control.
+	* arch/arm/src/stm32/stm32_usbdev.c: Added a USB device-side driver for the
+	  STM32.  NOTE: This is an early release of the USB driver.  There is at least
+	  one known issue. The examples/usbserial test only executes correctly under
+	  certain conditions (see the full bug description in the TODO list).
+	* arch/arm/src/stm32/stm32_rcc.c: Fixed an error in clock initialization.
+	  On some boards (none of mine), the HSE (high speed external clock) delay
+	  loop times out if the optimization level is high. The STM32 then falls
+	  back to the HSI (internal clock), and the system clock is too slow by a
+	  factor of 11.1%.	This was fixed by simply add the volatile storage class
+	  to the timeout loop counter
+	* arch/arm/src/stm32/stm32_irq.c: Fixed a critical bug in the interrupt
+	  control logic.  The wrong register was being used for interrupts in a
+	  certain range.  Worked fine until you try to use an interrupt in that
+	  range!
+
+4.14 2009-12-02 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/stm32/stm32_gpio.c: Add support for configure an input GPIO
+	  to generate an EXTI interrupt.
+	* config/stm3210e-eval/src/up_buttons.c: Add support for on-board buttons.
+	* include/nuttx/rwbuffer.h: Add generic support for read-ahead buffering
+	  and write buffering that can be used in any block driver.
+	* include/nuttx/wqueue.h: Added a generic worker thread that can used to
+	  defer processing from an interrupt to a task.
+	* include/nuttx/sdio.h: Defines a generic SD/SDIO interface can can be
+	  bound to a MMC/SD driver to provide SDIO-based MMC/SD support.
+	* drivers/mmcsd/mmcsd_sdio.c: Provides an SDIO-based MMC/SD driver.
+	* arch/arm/src/stm32/stm32_sdio.c: Provides an STM32 implementation of
+	  the SDIO interface defined in include/nuttx/sdio.h.
+	* fs/fs_mount.c: Correct error handling logic.  If the bind() method
+	  fails, then a reserved node is left in the tree.	This causes subsequent
+	  attempts to mount at the location to fail (reporting that the node
+	  already exists).	This is a problem for block drivers for removable
+	  media: The bind method could fail repeatedly until media is inserted.
+	* arch/arm/src/stm32/chip.h & stm32_dma.c: Fixed several definitions
+	  that can cause compilation errors when DMA2 is enabled.
+	* arch/arm/src/stm32/stm32_dma.c: Integrated and debugged STM32 DMA
+	  functionality that was added in 0.4.12.
+	* configs/stm3210e-eval/usbstorage: Add a configuration to exercise
+	  the STM32 with the USB mass storage device class example
+	  (examples/usbstorage).
+	* configs/mcu123-lpc214x/up_usbstrg: Move LPC-specific code from
+	  examples/usbstorage to configs/mcu123-lpc214x.
+	* configs/stm321e-eval/up_usbstrg: Add STM32-specific logic for the
+	  examples/usbstorage test.
+	* arch/arm/src/stm32/stm32_usbdev.c: Fix bugs in STM32 USB device-side
+	  driver:  (1) Need to disconnect after reset received, (2) Status setup
+	  to recover from stall on TX endpoint.
+
+5.0 2009-12-21 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/hc: Adding framework to support m68hc11/12
+	* configs/demo9s12ne64: Configuration to support Freescale DEMO9S12NE64
+	  development board (MC9S12NE64 m68hcs12 processor).
+	* drivers/mtd/ftl.c: A FLASH translation layer (FTL) has been implemented.
+	  This layer will convert a FLASH MTD interface into a block driver that
+	  can be used with any file system.  Good performance of this layer will
+	  depend upon functioning write buffer support!
+	  NOTE: FTL support is untested as of the initial check-in.
+	* Numerous minor changes for m68hc12 to eliminate compilation errors and
+	  warnings due to the fact that it uses 16-bit integer types and for casts
+	  between uint32 (32-bits) and an mc68hc12 pointer (16-bits).
+	* sys/types:  Size of off_t and blkcnt_t should not depend on size of
+	  int in the architecture;  Removed non-standard type STATUS
+	* include/: Added header files stdint.h, stdbool.h, cxx/cstdint, and
+	  cxx/cstdbool
+	* Changed ALL references to non-standard fixed-size types (like uint32,
+	  ubyte, etc.) to standard types (like uint32_t, uint8_t, etc.) from
+	  stdint.h.  Use type bool and {true, false} from stdbool.  This effected
+	  most of the files in the system!  Almost all configurations have been
+	  re-built and many have been re-verified in order to get confidence in
+	  these changes.
+	* graphics/ and examples/nx: Fix numerous build errors that have been
+	  introduced lately.  NXGL has suffered some bit-rot from not being used
+	  in some of the most recent ports.
+	* The misc/pascal NuttX add-on package has been updated to use the new
+	  standard types from stdint.h and stdbool.h and re-integrated with NuttX.
+	  The released pascal-2.0 will be the first version that contains the
+	  compatible changes.
+	* arch/arm/src/lm3s/lm3s_ethernet.c: Fixed an important bug in the LM3S
+	  Ethernet driver:  If full packet is received, the packet-too-big check
+	  will fail because it needs to subtract 6 from the packet size (to
+	  account for the 2-byte packet length and the 4-byte packet FCS in the
+	  FIFO).
+	* net/accept.c: Fixed a bad assertion (only happens when debug is enabled).
+	* net/send.c net/uip/uip_tcpseqno.c: Fixed a critical error in the TCP/IP
+	  logic.  The NuttX port of uIP imcludes logic to send data ahead without
+	  waiting for ACKs from the recipient; this greatly improves throughput.
+	  However, the packet sequence number was not being updated correctly and,
+	  as a result, packets were not be ACKed by the recipient and transfers
+	  would sometimes stall.  This is a very important bug fix (in fact, I
+	  don't understand how TCP/IP worked at all without this fix???)
+	* include/nuttx/arch.h and arch/*/common/up_udelay.c: Change argument
+	  of up_udelay() to type useconds_t to avoid warnings when sizeof(int)
+	  is 16-bits.
+	* drivers/mmcsd/*: Add casts in constant expressions to avoid warnings
+	  when sizeof(int) is 16-bits.
+
+5.1 2010-01-30 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/lpc313x and arch/arm/include/lpc313x: Added framework
+	  to support the NXP LPC3131.
+	* Add configs/ea3131.  The LPC3131 port for the Embedded Artist EA3131
+	  (LPC3131) is code complete and waiting for me to get hardware in
+	  hand.
+	* arch/arm/src/sam3u, arch/arm/include/sam3u, and configs/sam3u-ek -
+	  Added the basic framework needed to begin a port for the SAM3U-EK
+	  development board.
+	* lib/lib_crc32.c: Add CRC32 logic by Gary S. Brown to lib/.  This is
+	  the larger (but faster) table look-up version of the CRC32 algorithm.
+	* confgs/ea3131/tools: Added a tool to create a image suitable for
+	  use with the LPC313x bootloader.
+	* configs/sam3u-3k/ostest: Completed verification of the basic NuttX
+	  OS test for the SAM3U.
+	* arch/arm/src/common/up_createstack: stack was always been cleared
+	  when it was allocated.  This is a good feature for monitoring the 
+	  stack during debug, but really hurts thread start-up performance.
+	  Clearing is now done if CONFIG_DEBUG=y only.  Changes was only made
+	  for arm, but really should be made for all architectures.
+	* configs/sam3u/nsh: Added NSH configuration for SAM3U
+
+5.2 2010-03-18 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/sam3u/sam3u_pio.c: Fix an address calculation error
+	  that caused ports B & C to get mapped to the PIOA base address.
+	  This is an important bugfix! (a patch is available)
+	* arch/arm/src/lpc313x/lpc313x_boot.c: Fix an error in the vector
+	  initialization was causing a memory fault.
+	* lib/lib_strtod.c: Add strtod()
+	* lpc3131/ea3131: Several bring fixes submitted by David Hewson.  The
+	  lpc3131 is almost there!  Thanks David!
+	* arch/arm/src/arm/up_head.S: Corrected backward conditional compilation
+	  that selects if vectors are located at 0x0000:0000 or 0xffff:f000.
+	  This fixes the last show stopper bug in the lpc313x bring-up.
+	* configs/ea3131/nsh: Added a NuttShell (NSH) configuration for the
+	  EA3131.
+
+5.3 2010-04-11 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/lpc313x/lpc313x_usbdev.c: USB driver for the LPC313x
+	  contributed by David Hewson.
+	* configs/ea3131/src/up_ubstrgc.c, configs/ea3131/usbserial,
+	  configs/ea3131/usbstorage: USB storage and USB serial example support
+	  contributed by David Hewson.
+	* Several important compilation error fixes in lpc313x and (dualspeed) USB
+	  code also contributed by David Hewson.
+	* arch/arm/src/sam3u/sam3u_dmac.c: DMA support for the AT90SAM3U.
+	* arch/arm/src/sam3u/sam3u_hsmci.c: SD memory card support for AT90SAM3U
+	  (Neither the DMA nor the HSMCI driver are functional on the initial checkin).
+	* drivers/usbdev: Several important fixes to the USB mass storage driver
+	  submitted by David Hewson.
+	* configs/olimex-lpc2378, arch/arm/include/lpc2378, and arch/arm/src/lpc2378 -
+	  Basic port of the NXP 2378 on the Olimex board contributed by
+	  Rommel Marcelo.
+	* arch/arm/src/sam3u/sam3u_internal.h: Fixed a critical bug in the AT91SAM3U
+	  PIO decoding.  No PIOs greater than 15 could be used on any port!  Obviously,
+	  no one has been using this port.
+
+5.4 2010-04-23 Gregory Nutt <gnutt@nuttx.org>
+
+	* include/nuttx/lcd.h: Defines an LCD interface.
+	* graphics/nxglib/fb and lcd: Support LCD and framebuffer rasterizers for NX.
+	* configs/sam3u-ek/src/up_lcd.c: LCD driver for LCD on SAM3U-EK development
+	  board.
+	* configs/sam3u-ek/nx: NX graphics configuration for the SAM3U-EK
+
+5.5 2010-05-09 Gregory Nutt <gnutt@nuttx.org>
+
+	* drivers/net/enc28j60.c: Microchip ENC28J60 SPI Ethernet chip driver.
+	  (untested on original check-in).
+	* configs/olimex-str7p11/nettest: examples/nettest configuration using
+	  the ENC28J60 driver on the Olimex STMicro STR-P711.
+	  (unverified on original check-in)
+	* configs/olimex-str7p11/src/up_enc28j60.c: Add ENC28J60 initialization
+	  logic.
+	* configs/olimex-str7p11/src/up_spi.c: Fixed some bugs; added support
+	  for ENC28J60.
+	* arch/arm/src/str7x/str7x_xti.c: Add basic XTI support (external
+	  interrupts).
+	* arch/arm/src/lm3s and arch/arm/include/lm3s: Add definitions for
+	  LM3S6965
+	* configs/lm3s6965-ek: Add configuration for Stellaris LM3S6965
+	  Evaluation Kit (including basic examples/ostest configuration)
+	* lib/lib_dtoa.c and lib/lib_dtoa.c: printf will not print floating
+	  point values if you select CONFIG_LIBC_FLOATINGPOINT in your
+	  configuration file.  Contributed by Yolande Cates.  NOTE:  these
+	  floating point operations have not been well tested and may not
+	  be portable to all floating point implementations.
+	* configs/lm3s6965-ek/nsh: Added NuttShell (NSH) configuration for
+	  the LM3S6965 Evaluation Kit.  Includes both serial and telnet
+	  interfaces.
+	* net/net_close.c: Correct a UDP reference counting error
+
+5.6 2010-06-05 Gregory Nutt <gnutt@nuttx.org>
+
+	* drivers/lcd/p14201.c: Driver for RiT P14201 series 128x96 4-bit OLED.
+	* configs/lm3s6965-ek/nx: NX graphics configuration for the LM3S6965
+	  Ethernet Evaluation Kit.
+	* graphics/: Numerous fixes to get the P14201 4-bpp grayscale display
+	  working (there may still be some minor issues .. see the TODO list).
+	* arch/arm/include/lpc17xx and arch/arm/src/lpc17xxx: Began port for
+	  NXP LPC1768.  As of the 5.6 release, there is a complete set of
+	  LPC17xx header files defining all bits in all LPC17xx registers,
+	  but little else (I still do not have hardware in hand).
+	* drivers/mtd/m25px.c: Add support for M25P1 flash part (See NOTE)
+	* include/nuttx/i2c.h: Extended I2C interface definition to handle
+	  multiple transfers (See NOTE).
+	* include/nuttx/usbdev.h: Corrected an important macro definition
+	  needed to correctly handle USB null packet transfers (See NOTE).
+	* arch/arm/src/lpc313x: New drivers: I2C and SPI.  Plus several
+	  important LPC313x USB bug fixes (See NOTE).
+
+	NOTE: Contributed by David Hewson.
+
+5.7 2010-06-22 Gregory Nutt <gnutt@nuttx.org>
+
+	* configs/nucleus2g: Add ostest configuration for the Nucleus 2G
+	  LPC1768 board from 2G Engineering (http://www.2g-eng.com/)
+	* arch/arm/src/lpc17xx: Added basic LPC17xx boot-up logic,
+	  interrupt handling, and GPIO configuration.
+	* configs/nucleus2g/ostest: Completed bring-up of LPC1768 on
+	  the Nucleus2G board using the examples/ostest
+	* configs/nucleus2g/nsh: Added and verified a NuttShell (NSH)
+	  configuration for the LPC1768 on the Nucleus2G board.
+
+5.8 2010-07-18 Gregory Nutt <gnutt@nuttx.org>
+
+	* configs/nucleus2g/src/up_nsh.c and up_ssp.c: Add support
+	  for SPI-based MMC/SD cards and integrate into the NSH example.
+	* arch/arm/src/lm3s/lm3s_vectors.S: Correct vectors for GPIOC & D
+	  interrupts.
+	* arch/arm/src/lpc17xx/lp17_clockconfig.c: Power was not being
+	  provided to GPIO module.  This is a critical bugfix!
+	* arch/arm/src/lpc17xx/lpc17_serial.c: Improved logic to handle
+	  missed TX interrupts.
+	* arch/arm/src/lpc17xx/lpc17_ssp.c: Fix a hard fault during SSP
+	  initialization.
+	* configs/nucleus2g/src/up_led.c: Change how LEDs are controlled
+	  so that they can be used both for NuttX instrumentation and
+	  by application software.
+	* include/net/uip/igmp.h and uip-igmp.h: Add header files ini
+	  preparation for NuttX IGMP support
+	* net/uip/uip_igmp*.c: Add IGMP support (untested on initial
+	  checkin).
+	* examples/igmp: Add a trivial test for IGMP (much more is needed)
+	* configs/nucleus2g/usbserial and usbstorage: Add USB configurations
+	  for testing purposes.
+	* arch/arm/src/common/up_internal.h, cortexm3/up_assert.c,
+	  */*_vectors.S: Correct compilations errors when CONFIG_ARCH_INTERRUPTSTACK
+	  is enabled (feature still not tested)
+
+5.9 2010-08-25 Gregory Nutt <gnutt@nuttx.org>
+
+	* examples/nsh/nsh_telnetd.c: Fix compilation errors that happen
+	  when both DHCPC and TELNETD are enabled in the Nuttshell.
+	* graphics/nxglib/fb/nxglib_moverectangle.c: Fix a logic error
+	  that caused an uninitialized variable warning.  I still don't 
+	  have a test to prove that the changes are correct.
+	* configs/olimex-lpc2378: Add support for the CodeSourcery toolchain
+	  under Linux (contributed by Alan Carvalho de Assis).
+	* arch/arm/src/lpc17xx/lpc17_gpio.c: Fix an important GPIO configuration
+	  bug:  When attempting to set no pull-up or pull-down (floating),
+	  it would, instead, select pull-down.
+	* arch/arm/src/lm3s/lm3s_gpioirq.c: Fix warning for returning a value
+	  from functions returning void (contributed by Tiago Maluta).
+	* netutils/dhcpc/dhcpc.c: lease_time was not in host order
+	* examples/uip/main.c: if DHCPC is selected, this example now shows
+	  the assigned IP address.
+	* arch/arm/src/lm3s and arch/arm/include/lm3s: Definitions for the
+	  TI LM3S9B96 contributed by Tiago Maluta.
+	* arch/arm/src/lm3s/lm3s_gioirq.c: Fix a logic error in the address
+	  table lookup.
+	* arch/arm/src/lm3s/lm3s_gioirq.c: Also needs to enable the global
+	  GPIO interrupts.
+	* arch/arm/src/lm3s/lm3s_internal.h and lm3s_gpio.c: Fixed the encoding
+	  of GPIO port number that limited support for GPIO ports to 8
+	* sched/pg_*.c and *.c and include/nuttx/page.h: Implemented the
+	  common, core logic for on-demand paging. See
+	  http://www.nuttx.org/NuttXDemandPaging.html for details.
+	* drivers/usbdev/usbdev_serial.c: Correct compilation errors that
+	  occur if CONFIG_USBDEV_DUALSPEED is selected.
+	* configs/ea3131/pgnsh: Add an NSH configuration with on-demand paging
+	  enabled.  This is not expected to be a functionality configuration (at
+	  least not yet); it was created in order to debug the on-demand paging
+	  feature.
+	* configs/ntosd-dm320/*/Make.defs: Codesourcery and devkitARM toolchains
+	  now supported for the Neuros OSD.
+	* configs/ntosd-dm320 and arch/arm/src/dm320: Add support for the
+	  Neuros production OSD (changes contributed by bf.nuttx).
+
+5.10 2010-09-07 Gregory Nutt <gnutt@nuttx.org>
+
+	* configs/ea3131/locked: Create logic to support a two pass build
+	  process:  The first pass forces critical logic into the locked text
+	  region, the second pass builds the NuttX executable more-or-less as
+	  normal.
+	* Makefile, arch/arm/src/Makefile, configs/ea3131: Add logic to
+	  support a two-pass final link.  This logic is only in place in
+	  the arch/arm/src/Makefile for now.
+	* arch/arm/src/lpc17xx/lpc17_internal.h: Add missing parentheses in
+	  macros definitions (patch submitted by Tiago Maluta).
+	* Documents/NuttxPortingGuide.html, configs/README.txt, etc. -
+	  Replaced CONFIG_EXAMPLE with CONFIG_APP_DIR (see documents for
+	  desciption).  This allows NuttX application code to be built
+	  outside of the examples/ directory.
+
+	  For people who have their own configurations and/or Makefiles,
+	  you will need to make a couple of changes:
+
+	  - Replace all occurrences of CONFIG_EXAMPLE=foobar with
+	    CONFIG_APP_DIR=examples/foobar in all of the configuration
+	    files.
+	  - Replace any occurrences of examples/$(CONFIG_EXAMPLE) with
+	    $(CONFIG_APP_DIR)
+	  - Replace any occurrences of lib$(CONFIG_EXAMPLE)$(LIBEXT)
+	    with libapp$(LIBEXT) in your Makefiles.
+	  - Check any other occurrences of CONFIG_EXAMPLE.
+
+	* arch/arm/src/lpc313x/lpc313x_spi.c: Fix compilation error when
+	  when CONFIG_DEBUG is enabled.
+	* arch/arm/src/lm3s and arch/arm/include/lm3s: Support for the
+	  lm3s8962 contributed by Larry Arnold.
+	* configs/lm328962-ek: Support for the TI/Stellaris EKC-LM3S8962
+	  board (also contributed by Larry Arnold).
+	* arch/arm/src/lpc313x/lpc313x_boot.c: The call to lpc313x_boardinitialized()
+	  should not be conditioned on CONFIG_ARCH_LEDs being defined!
+	* arch/arm/src/lpc313x/: APB0 and APB1 cannot lie in different
+	  sections; they are too close together.
+	* arch/arm/src/lpc313x/lpc13x_boot.c: Resetting all of the clocking
+	  had a side effect of wiping out the first 6 words of memory where the
+	  interrupt vectors are located (and also not resetting the fractional
+	  dividers).  This is not usually noticeable because the IRQ vectors
+	  are after this point, but really causes problems if you want to handle
+	  data and prefectch aborts which are within this zeroed region.
+
+5.11 2010-10-01 Gregory Nutt <gnutt@nuttx.org>
+
+	* configs/ea3131/src/up_fillpage.c: Added new configuration item
+	  CONFIG_PAGING_BINPATH.  If CONFIG_PAGING_BINPATH is defined, then it
+	  is the full path to a file on a mounted file system that contains
+	  a binary image of the NuttX executable.  Pages will be filled by
+	  reading from offsets into this file that correspond to virtual
+	  fault addresses.  up_fillpage.c implements logic to perform page
+	  files using the CONFIG_PAGING_BINPATH file.
+	* configs/mbed: Add configuration to support the mbed.org LPC1768
+	  board (Contributed by Dave Marples).
+	* sched/sem_wait.c and sem_waitirq.c: Eliminate a race condition
+	  that can occur when a semaphore wait is interrupt by a signal.
+	  (see email thread: http://tech.groups.yahoo.com/group/nuttx/message/530)
+	* drivers/mtd/at45db.c: Add a driver for the Atmel AT45DB161D 4Mbit
+	  SPI FLASH part (untested on initial check-in).
+	* arch/arm/src/lm3s and arch/arm/include/lm3s: Corrections for the
+	  lm3s8962 port contributed by Larry Arnold.  That port is purported
+	  to work correctly with these changes in place.
+	* examples/ostest/prioinherit.c: Need to reinitialize globals if
+	  test is ran repeatedly in a loop.
+	* configs/ez80f910200zco: Updated to used ZDS-II 4.11.1
+
+5.12 2010-10-26 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/avr: Add a place to support AVR family processors.
+	* arch/avr/include/avr32 and arch/avr/src/avr32: Add support for AVR32
+	  (all of the AVR32 is a work in progress).
+	* arch/avr/include/at32uc3 and arch/avr/src/at32uc3: Add support
+	  for the AVR32 UC3A/B family of AVR32 MCUs.
+	* confgs/avr32dev1: Add support for the Atmel AVR32DEV1 board featuring
+	  the AT32UC3B0256 MCU.  This board is produced by www.mcuzone.com.
+	* include/stdlib.h, lib/Makefile, lib/lib_abs.c, lib/lib_labs.c,
+	  lib_labs.c, lib_llabs.c, lib_imaxabs.c: Add abs(), labs(), llabs(), and
+	  imaxabs().
+	* Add include/inttypes.h
+	* arch/hc/src/mc9s12ne64: This hcs12 port grew a few more files.  But it
+	  is still a long way from complete.
+	* arch/*/src/*/*_sigdeliver.c: Fixed a serious error in the signal
+	  trampoline logic.  Essentially, interrupts are re-enabled while the
+	  signal handler executes, but the logic to re-disable the interrupts
+	  before returning from the signal handler trampoline was missing.  Under
+	  certain circumstances, this can cause stack corruption.  This was
+	  discovered by David Hewson on an ARM9 platform, but since the code
+	  has been leveraged, the bug has been propogated from ARM to Cortex-M3,
+	  AVR32, M16C, SH1, ZNEO, eZ80, Z8, and Z80 -- almost every architecture.
+	  The correction has been incorporated for all architectures but only
+	  verified on a few.
+
+5.13 2010-11-09 Gregory Nutt <gnutt@nuttx.org>
+
+	* lib/lib_strnlen.c: Added POSIX 2008 strnlen() function.  Contributed
+	  by Michael Hrabanek.
+	* Fix wild, consistent naming error.  For some reason, I called the at32uc3*
+	  parts at91uc* everywhere.  Fixed by changing lots of files and directories.
+	* configs/avr32dev1/ostest: The AVR32 port now successfully passes the
+	  examples/ostest.  We have a good AVR32 port!
+	* configs/avr32dev1/nsh: Added a configuration to support the NuttShell
+	  (NSH). As of this writing, here is a problem receiving serial data (this
+	  is, very likely, my hardware setup).
+	* lib/lib_open.c: Fix an error in fdopen when a valid file desciptor does
+	  not refer to an open file.
+	* configs/olimex-lpc1766stk: Add support for the Olimex LPC1766-STK
+	  development board.  The OS test and NSH configurations (only) have been
+	  verified.
+
+5.14 2010-11-27 Gregory Nutt <gnutt@nuttx.org>
+
+	* configs/olimex-lpc1766stk/nettest: Add examples/nettest configuration to
+	  verify the LPC17xx Ethernet driver currently under development.
+	* arch/arm/src/lpc17xx/lpc17xx_ethernet.c/.h: Began development of
+	  the LPC17xx Ethernet driver.  Driver in CVS functional after 2010-11-23.
+	* sched/timer_settime.c: Fix an error in set-up of a one-shot POSIX timer.  It
+	  was using the repititive timer value (which is zero in the one-shot case),
+	  always resulting in a 10Ms timer!  Found and fixed by Wilton Tong.
+	* arch/arm/src/lpc17xx/lpc17_vector.S, stm32/stm32_vector.S, lm3s/lm3s_vector.S,
+	  sam3u/sam3u_vector.S: Fixed a hard fault problem that can occur if certain
+	  types of interrupts are pending at the time another interrupt returns
+	  (SYSTICK).  This has not been verified on all plaforms, but is a critical
+	  fixed that is needed by all Cortex-M3 NuttX users.
+	* configs/olimex-lpc1766stk/thttpd: Add a THTTPD configuration for the
+	  Olimex LPC2766-STK board. Verified successfully.
+	* net/uip/uip_tcpappsend.c: Correct an important logic bug in some uIP state
+	  data the is used to manage retransmissions.  The uIP logic was incompatible
+	  with the retransmission logic of net/send.c in one place.  The final error
+	  was that the final packet in a sequence of packets was too large!  In the
+	  THTTPD example, this would leave some garbage at the bottom of the display
+	  (or worse).  I don't know why I haven't see this bug before???
+	* net/uip/uip_tcpinput.c: The change to uip_tcpappsend.c unmasked an
+	  additional error in the TCP sequence number handling.  This sympom was that
+	  the send() function would hang with outstanding, unacknowledged data (with
+	  no re-transmit requests).  The was due to differences in sequence number
+	  handling in send() and in uip_tcpinput.c; uip_tcpinput.c thought (incorrectly)
+	  that all of the bytes were acknowledged; send.c knew that they were not.
+
+5.15 2010-12-12 Gregory Nutt <gnutt@nuttx.org>
+
+	* net/uip/uip_tcpaddsend.c and net/send.c: Another place where the TCP sequence
+	  number problem "fixed" in 5.14 might occur.
+	* net/send.c: Check if the destination IP address is in the ARP table.  If
+	  not, then don't consider the packet sent.  It won't be, an ARP packet will go
+	  out instead.  This improves behavior, for example, on the first GET request
+	  from a browser.
+	* arch/arm/src/lpc17xx/lpc17_emacram.h and lpc17_allocateheap.c: The Ethernet
+	  logic was using all of AHB SRAM Bank0 for Ethernet packet buffers (16Kb).  An
+	  option was added to limit the amount of SRAM used for packet buffering and to
+	  re-use any extra Bank0 memory for heap.  configs/olimex-lpc1766stk/nettest
+	  now uses only 8Kb at the beginning of Bank0; the 8Kb at the end of Bank0 is
+	  included in the heap
+	* arch/arm/src/lpc17xx/lpc17_ssp.c: Fix compilation errors when SSP1 is
+	  selected.
+	* configs/olimex-lpc1766stk/nsh: Enable network and SD/MMC card support in
+	  NSH.  Networking and telnetd interface as well as SPI-based microSD are
+	  now functional.
+	* examples/nsh/nsh_netinit.c: Fix NSH bug.  If CONFIG_NET is selected, but
+	  CONFIG_EXAMPLES_NSH_TELNETD is not selected, then the network is never
+	  initialized and bad things happen if you try to ping.
+	* drivers/lcd: Add header files for the Phillips PCF8833 LCD controller and
+	  for the Epson S1D15G10 LCD controller.  A driver for the Nokia 6100 LCD is
+	  coming.
+	* include/nuttx/spi.h and almost all other SPI files: Added an optional
+	  cmddata() method to the SPI interface.  Some devices require an additional
+	  out-of-band bit to specify if the next word sent to the device is a command
+	  or data. This is typical, for example, in "9-bit" displays where the 9th bit
+	  is the CMD/DATA bit. The cmddata method provides selection of command or data.
+	* drivers/lcd/p14201.c: Now uses the cmddata() method of the SPI interface.
+	* arch/arm/src/lpc17xx/lpc17_usbdev.c: LPC17xx USB driver now appears to
+	  to be fully functional.  examples/usbstorage configuration verified (the
+	  examples/usbserial configuration is untested).
+	* drivers/usbdev/usbserial.c and usbstorage.c: All USB class drivers need
+	  to call DEV_CONNECT() when they are ready to be enumerated.  That is,
+	  (1) initially when bound to the USB driver, and (2) after a USB reset.
+	* drivers/lcd/nokia6100.c: A driver for the Nokia 6100 LCD.  This driver
+	  has not be verified as of the initial check-in.
+	* configs/olimex-lpc1766stk/nx: A NX graphics configuration for the Olimex
+	  LPC1766-STK board using the Nokia 6100 LCD driver.  This configuration has
+	  not been verified as of the initial check-in.
+	* include/nuttx/spi.h: the SPI_SETBITS macro was calling the setmode method.
+	  This is a very important bug-fix in some usages.
+
+5.16 2011-01-10 Gregory Nutt <gnutt@nuttx.org>
+
+	* include/nuttx/usb: Created new directory.  Moved all usb-related header
+	  files to this new directory.  Created a skeleton for a new USB host header
+	  file
+	* drivers/usbhost: Add USB host "registry" where connect devices can be
+	  matched with the correct USB class driver.
+	* arc/arc/src/lpc17xx/lpc17_usbhost.c: Add a simple USB host driver for
+	  the NXP lpc17xx.
+	* drivers/usbhost: Add generic USB device enumeration logic.
+	* drivers/usbhost: Add a USB host class driver for the (Bulk-Only) USB
+	  Mass Storage Class.
+
+5.17 2011-01-19 Gregory Nutt <gnutt@nuttx.org>
+
+	* include/nuttx/usb: rename usb_storage.h to storage.h.
+	* arch/arm/src/lpc17xx/lpc17_usbhost.c: Add support for low-speed devices.
+	* drivers/usbhost/usbhost_skeleton.c: Template for new class drivers
+	* include/nuttx/usb/hid.h and drivers/usbhost/usbhost_hidkbd.c: New
+	  files for HID keyboard support.
+	* arch/arm/src/lpc17xx/lpc17_usbhost.c: Will now handle multiple
+	  concurrent transfers on different endpoints (still only one TD per
+	  endpoint).  All methods are protected from re-entrancy; lots of re-
+	  structuring in preparation for interrupt endpoint support.
+	* arch/arm/src/lpc17xx/lpc17_usbhost.c: Add support for periodic
+	  interrupt transfers.
+	* examples/hidkbd: Added a simple test for the USB host HID keyboard
+	  class driver.
+	* configs/olimex-lpc1766stk/hidkbd: Added a configuration to build the
+	  USB host HID keyboard class driver test for the LPC17xx.
+	* Ran the tool CppCheck (http://sourceforge.net/apps/mediawiki/cppcheck) and
+	  fixed several errors in the code identified by the tool.
+
+5.18 2011-02-27 Gregory Nutt <gnutt@nuttx.org>
+
+	* Incorporate several uIP patches from http://gitweb.aeruder.net/?p=uip.git;a=summary.
+	  - Lost SYNACK causes connection reset
+	  - Fix missing UDP stats for sent/received packets
+	  - Added support for Cygwin as development/test platform.
+	* configs/demo9s12ne64: Integrate new buildroot-1.9 m8s12x toolchain.
+	* 'uname -o' is used throughout the build logic in bash scripts and also in
+	  Make.defs files in order to distinguish between Cygwin and Linux.  However,
+	  the -o option is not standard and is not supported under, for example, OS-X or
+	  Solaris.  This was solved by changing all 'uname -o' references to the more
+	  complex:  'uname -o 2>/dev/null || echo "Other"'
+	* drivers/usbhost/usbhost_enumerate.c: Add logic to get the VID and PID.  This
+	  is necessary in order to support vendor-specific USB devices.
+	* examplex/wlan, configs/olimex-lpc1766stk/wlan, drivers/usbhost/usbhost_rtl8187.c,
+	  Add infrastructure to support RTL18187 wireless USB.
+	* configs/nucleus2g: backed out USB host changes... wrong board.
+	* Renamed arc/hc/include/mc9s12ne64 and src/mc9s12ne64 to m9s12.  That name is
+	  shorter and more general.
+	* The NuttX repository has been converted to SVN and can now be found here
+	  http://nuttx.svn.sourceforge.net/viewvc/nuttx/
+	* configs/mbed/hidkbd: Added USB host support for the mbed LPC1768 board; add
+	  a USB host HID keyboard configuraion.
+	* drivers/usbhost/hid_parser.c: Leverages the LUFA HID parser written by
+	  Dean Camera.
+	* examples/nsh: Correct an usage of getopt(): If you stop calling getopt()
+	  before all parameters are parsed, you can leave getopt() in a strange state.
+	* include/nuttx/fb.h: Restore missing RGB type that was accidentally removed
+	  when Nokia 6100 support was added.
+	* Rename arch/pjrc-8051 to arch/8051
+	* configs/ne64badge: Add a configuration for the Future Electronics Group
+	  NE64 Badge development board (Freescale MC9S12NE64)
+	* Changes contributed by Uros Platise:
+	  - Add support for the STM32F103RET6
+	  - configs/vsn: Support for the ISOTEL NetClamps VSN V1.2 ready2go sensor
+	    network platform
+	* arch/hc, configs/ne64badge: Development is complete for the Freescale
+	  mc9s12ne64 on the Future Electronics Group NE64 /PoE Badge board.  Howeve,
+	  this port remains untested until I figure out this BDM / Code Warrior
+	  and paged build thing
+	* Added a new 'kill' command to NSH that will support sending signals to
+	  running NuttX tasks.
+
+5.19 2011-03-12 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/stm32/stm32_idle.c: During idle times, the STM32 now uses the
+	  WFI instruction to sleep in a reduced power mode until the next interrupt
+	  occurs (Contributed by Uros Platise).
+	* NSH: 'mem' command renamed to 'free'.  Output is now more similar to the
+	  Linux 'free' command.
+	* NSH: Correct a redirection bug in NSH.  The following would not work; it
+	  resulted in a hang after the 'cat /dev/fifo':
+
+	    nsh> mkfile /dev/fifo
+	    nsh> cd /tmp             # /tmp is a mounted RAM disk
+	    nsh> cat /dev/fifo > test.txt &
+	    nsh> echo "This is a test" > /dev/fifo
+
+	  The error was caused because (1) there was a path that resulted in stdout
+	  being closed (the "hang") and also (2) the 'cat' command was always outputting
+	  to stdout, not to the redirected file descriptor.  Now:
+
+	    nsh> cat test.txt
+	    This is a test
+
+	* drivers/pipes/pipe_common.c:  Driver open method was not returning an EINTR
+	  error when it received a signal.  Instead, it just re-started the wait.  This
+	  makes it impossible to kill a background pipe operation from NSH.
+	* include/stdint.h: Correct some errors in conditional compilation (submitted
+	  by Johannes Hampel).
+	* arch/arm/lpc17xx/lp17_idle.c: Uses the same logic as the STM32: uses the
+	  WFI instruction to sleep in a reduced power mode until the next interrupt
+	  occurs.
+	* configs/olimex-lpc1766stk: Added an LED encoded to indicate if the LPC1766
+	  is in sleeping.
+	* examples/mm: This is a simplified version of the "built-in" memory manager
+	  test of mm/mm_test.c.  It is simplified because it does not have access to
+	  the internals of the memory manager as does mm/mm_test.c, but it has the
+	  advantage that it runs in the actual NuttX tasking environment (the
+	  mm/mm_test.c only runs in a PC simulation environment).
+	* drivers/mmcsd_sdio.c/h: Several corrections submitted by Uros Platise.
+	* arch/x86: Provide support for x86 architectures.  Support for the i486
+	  architecture under QEMU is provided under arch/x86/include/i486,
+	  arch/x86/include/qemu, arch/x86/src/i486, and arch/x86/src/qemu.
+	* configs/qemu-i486: "Board" support configurations for verifying the QEME
+	  i486 port.
+	* arch/arm/src/stm32/stm32_spi.c: Correct base address of SPI3 (reported by
+	  Uros Platise).
+	* drivers/mmcsd/mmcsd_sdio.c: Correct a loop termination condition (also
+	  reported by Uros Platise).
+	* drivers/mtd/ramtron.c: Driver for SPI-based RAMTRON NVRAM devices FM25V10
+	  (and others).  Contributed by Uros Platise.
+	* examples/nsh and tools/mkromfsimg.sh: Add support for platform-specific
+	  ROMFS-based NSH start-up scripts.
+	* drivers/uart_16550.c and include/nuttx/uart_16550.h: Support for a generic
+	  16550 UART.
+	* configure/qemu-i486/nsh: QEMU NSH example.
+	* ../apps: The apps directory add-on was created by Uros Platise.  It
+	  supports a set of end-user applications than can be executed on top of
+	  NSH.  Think of it this way:  In a buckled-up embedded application, your
+	  end-user programs will probably have their own dedicated start-up logic.
+	  But, during development, you might want to have you applications
+	  available and executable from the NSH command line.  This apps/ addon
+	  (and NSH hooks) was contributed by Uros to accomplish just that.
+	* sched/sched_waitpid() and include/sys/wait.h: Provides a simple and
+	  very incomplete implementation of waitpid().  waitpid() is only available
+	  if CONFIG_SCHED_WAITPID is defined in your configuration file.
+	* sched/atexit.c and sched/exit.c: The atexit function is not frequently
+	  used.  In order to save a few bytes, it is now conditioned on
+	  CONFIG_SCHED_ATEXIT.  It your application is currently using atexit(),
+	  you will need to add CONFIG_SCHED_ATEXIT to your configuration file.
+	* drivers/net/slip.c: Add a SLIP driver (untested on initial check-in).
+	* configs/olimex-lpc1766stk/slip-httpd: An example that uses SLIP to
+	  provide a serial-port based THTTPD web server.
+
+6.0 2011-03-21 Gregory Nutt <gnutt@nuttx.org>
+
+	* lib/lib_fopen(): fopen() was not returning the correct errno value
+	  when the underlying open() failed.
+	* include/net/uip/uip-arch.h: The uIP interface has been extended
+	  slightly so that drivers can be concurrenly filling and sending
+	  packet buffers.  This capability was needed by the SLIP driver.
+	* drivers/net/slip.c: Several corrections and some re-design of
+	  of the driver.
+	* apps/ChangeLog.txt: the apps/ directory now has its own ChangeLog.
+	* configs/vsn:
+	  - IDLE LED blinking fix
+	  - Added board power off function
+	* arch/arm/src/stm32/stm32_gpio.c and stm32_internal.h: Fixed
+	  PullUp/Down Input Configuration.
+	* arch/arm/src/lpc17xx/lpc17_serial.h: Now supports Auto-RTS and
+	  Auto-CTS modes.  This is needed to support SLIP.
+	* drivers/net/slip.c: SLIP is now basically functional on the
+	  LPC17xx with some caveats as described in the TODO list under
+	  LPC17xx.
+	* arch/x86/include/i486/irq.h: Fix irqrestore() macro... it was not
+	  correctly re-enabling interrupts.
+	* arch/x86/src: Fix numerous problems with i486/QEMU context
+	  switching.  Basically, the logic was missing the cases to handle
+	  the differing stack frames when a priority change occurs and when
+	  no priority change occurs.
+	* configs/qemu-i486/ostest and nsh: The QEMU i486 port is complete.
+	  it now passes the OS test and supports the NuttShell (NSH).
+	* misc/drivers: Created a new directory to hold non-BSD licensed
+	  drivers that may be added into NuttX via an installation script.
+	* drivers/usbhost/usbhost_rtl8187.c: A decision was made to
+	  incorporate code taken from the Linux kernel.  That changes the
+	  licensing on this module to GPL.  To avoid licensing contamination,
+	  this driver was moved to misc/drivers/rtl8187x *prior* to adding
+	  any of the GPL logic.  There is an INSTALL.sh script at the location
+	  where the GPL driver(s) can be re-installed into the NuttX source
+	  tree.  By re-installing the driver, you agree to the GPL licsensing
+	  and all of its implications.
+	* Makefile, apps/Makefile, tools/configure.sh: add logic to copy
+	  configs/<board>/<config>/appdir to apps/.config and to simply the
+	  application configuration logic.
+	* examples/nsh and apps/nshlib: Move the core NuttShell (NSH) logic
+	  out of the exemples directory and into the apps/ directory where
+	  it belongs.
+	* apps/Makefile and configs/*/appconfig: Use '=' as the delimiter
+	  instead of '/' so that sub-directories in apps/ can be used.
+	* apps/vsn: Move all VSN apps to apps/vsn.
+	* nuttx/examples moved to apps/examples
+
+6.1 2011-04-11 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/include/lpc17xx/irq.h and arch/arm/src/lpc17xx/lpc17_gpio*.c:
+	  Fix several bugs in the GPIO interrupt logic.  Submited by
+	  Decio Renno.
+	* Initialization for the CONFIG_APPS_DIR is now supported during the
+	  earlier, 'context' build phase.
+	* arch/arm/src/lpc17_gpioint.c: Finish coding of the LPC17xx GPIO
+	  interrupt logic.
+	* net/netdev_unregister.c: Add capability to un-register a network
+	  device.
+	* drivers/mmcsd/mmcsd_sdio.c: extra effort to correctly handle cases
+	  without the SDcard (but one issue still exists in STM32)
+	* arch/arm/src/stm32/stm32_tim.*: Added basic timer support TIM1..TIM8
+	  with output PWMs and interrupt logic
+	* config/vsn/src: added basic support for Sensor Interface (GPIO and
+	  PWM Power Output, and the sif utility program)
+	* fs/: Reorgnize header so that file systems can be built outside
+	  of the nuttx source tree
+	* apps/namedapp/binfs.c: Create a tiny filesystem that can be used
+	  to show the internal named apps under /bin.
+	* fs/fs_opendir.c: Correct an error that occurs when a file system is
+	  mounted in the root directory.  This was discovered while mounting
+	  the named app's /bin directory.
+	* lib/: Move all source files into a subdirectory of lib/ named after
+	  the header file in which the library function is prototyped.
+	* sched/ and lib/pthread/:  Move pthread attribute-related interfaces
+	  from sched/ to lib/pthread where they more appropriately belong.
+	* sched/ and lib/semaphore/:  Move some semaphore-related interfaces
+	  from sched/ to lib/pthread where they more appropriately belong.
+	* syscall/: The beginnings of an optional syscall kernal interface.
+	* tools/mksyscall.c:  Add a tool that will auto-generate syscall proxies
+	  and stubs from a comma-separated-value (CSV) data file.
+	* arch/arm/src/cortexm3/mpu.h: Add a header file describing the Cortex-M3
+	  MPU registers.
+	* Numerous modifications to the build system.  Various people have reported
+	  build problems since the re-organization and release of NuttX-6.0.  I am
+	  unable to replicate the build problems in my environment, but the changes
+	  have be incorporated in hope of correcting the build issues in other
+	  environments.
+	* drivers/i2c/st_lis331dl.c:  I2C-based driver for the LIS331DL MEMS
+	  motion sensor.  Contributed by Uros Platise.
+	* Makefile: The NuttX build system  will now supported building NuttX as two
+	  separately linked images: (1) a kernel-mode RTOS image, and (2) a user-
+	  mode application image that communicates to the RTOS kernel via system
+	  calls.  A lot more still must be done.
+	* user_initialize(): Eliminated the user_initialize() initialization hook.
+	  It is difficult to maintain and redundant:  Board level initialization
+	  an up_initialize() provide the same kind of capability.
+	* arch/*/include/*/type.h: On some compilers, char defaults as unsigned.
+	  Explicitly add signed to integer types if signed is what is required.
+	* arch/*: For all architectures -- Global register state save structure
+	  (usually called current_regs) should be marked volatile; Added general
+	  capability to support nested interrupts (not fully realized for all
+	  architectures).
+	* sched/task_create.c: Add support for starting kernel-mode thread.
+	* drivers/usbdev/usbdev_serial.c: Fix reported by Sheref Younan.  USB
+	  was being reset after serial driver was closed.  As a result, you could
+	  no reopen the serial driver.
+	* configs/lpcxpresso-lpc1768: Add a board configuration for the Embedded
+	  Artists LPCXpresso LPC1768 board.
+
+6.2 2011-05-06 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/lpc17xx/lpc17_gpioint.c: Correct errors in logic that maps
+	  and IRQ number into a register bit number.
+	* Makefile: Fix an error introduced in the top-level Makefile in NuttX-6.1.
+	  This error only shows up if you have a /tftpboot directory.  Then the 
+	  make will fail with an obscure error about not being able to stat pass2.
+	* configs/lpcxpresso-lpc1768/nsh: Add an NSH configuration for the
+	  LPCXpresso board.
+	* configs/*/ld.script: Removed 'sh_link not set for section .ARM.edix' for
+	  a few of the builds.  In you have this warning, it can be removed with the
+	  following change to the ld.script file:
+	  
+		+ __exidx_start = ABSOLUTE(.);
+		.ARM.exidx : {
+		-     __exidx_start = ABSOLUTE(.);
+		      *(.ARM.exidx*)
+		-     __exidx_end = ABSOLUTE(.);
+		} >sram
+		+  __exidx_end = ABSOLUTE(.);
+
+	* arch/arm/src/lpc17xx: Correct some typos/bugs in configuration of LPC17xx
+	  UART2 and UART3.
+	* nuttx/clock.h: Replace all references to the global variable g_system_timer
+	  with clock_systemtimer() (currently just a macro that that returns g_system_timer).
+	* lib/string/strrch.c: Would fail if the searched-for character were the first
+	  character in the string.
+	* tools/version.sh and mkversion.c: Tools to manage a NuttX version number
+	  file
+	* sched/clock_getutc() and lib/time/lib_time.c: Add support for 1 second UTC
+	  interface.
+	* net/net_dup2.c and include/nuttx/net.h: The conditional compilation for
+	  '#if CONFIG_NFILE_DESCRIPTOR > 0' was wrong in both of these files.  It should
+	  be '#if CONFIG_NFILE_DESCRIPTORS > 0'.  This causes a dup2() failure in THTTPD
+	  and a failure to get a CGI page.  The consequence can be a very serious bug!
+	* configs/lpcxpresso-lpc1768/usbstorage, thttpd, and dhcpd: Add an USB storage,
+	  THTTPD web server, and DHCP server configurations for the NXP LPCXpresso board.
+	* drivers/lcd/ug-9664hswag01.c and ssd1305.h: Add support for Univision UG-9664HSWAG01
+	  OLED with Solomon Systech SD1305 LCD controller.
+	* configs/lpcxpresso-lpc1668/nx: Add a NX graphics configuration for the LPCXPRESO
+	  board.
+	* graphics/nxglib/nxglib_nonintersecting.c: Fix some single bit errors in
+	  calculation of non-intersecting regions.  This was causing an anomaly
+	  in examples/nx in column 0.
+	* drivers/mtd/rammtd.c: Added a RAM based MTD driver.  This RAM driver simulates
+	  FLASH and is useful for testing purposes.
+	* arch/arm/src/arm/up_head.S: Fix backward conditional compilation.  This cause
+	  the configs/mx1ads configuration to fail to build but does not appear to affect
+	  any other ARM9 build.
+	* fs/nxffs: Adding a tiny, wear-leveling FLASH file system for NuttX.  This
+	  file system is intended to be small and will have some limitations.  The
+	  implementation is incomplete on initial checkin.
+	* apps/examples/nxffs and configs/sim/nxffs:  Add a test a a configuration that
+	  will be used to verify NXFFS.
+	* fs/fat/fs_fat32.c and fs_fat32util.c: Incorpated two bugs with fixed provided
+	  by Sheref Younan.  Thanks!
+	* fs/nxffs: After a couple of weeks of testing and bug fixes, NXFSS appears
+	  stable and functional.
+
+6.3 2011-05-15 Gregory Nutt <gnutt@nuttx.org>
+
+	* Remove clock_getutc().  It is replaces with clock_gettime(CLOCK_ACTIVETIME).
+	  Add other RTC related changes provided by Uros Platise.
+	* arch/arm/src/stm32/stm32_flash.c: Add support for access to on-chip STM32
+	  FLASH; beginning of integration with NXFFS (Uros Platise).
+	* arch/mips: Added directory structure for PIC32 support
+	* configs/pcblogic-pic32mx:  Add directory structure for PCB Logic PIC32MX board
+	* apps/include:  Move include/apps to apps/include.  A symbolic link is created at
+	  build time
+	* Makefile: Removed support for Pascal pcode interpreter.  Support for that
+	  interpreter has been moved to apps/interpreter/Makefile.
+	* tools/mkdep.sh: Should not report an error if there are no files on the command
+	  line.  This happens normally in certain configurations.
+	* drivers/usbhost: Sheref Younan reported an error in the error handling when
+	  connection to a USB device fails.  In certain fail cases, the logic would try
+	  to free the device class instance twice, the first was okay, but the second
+	  caused a crash.
+	* graphics/nxbe/nxbe_colormap.c: Fix error noted by Bassem Fahmy.  The function
+	  nxbe_colormap was change to nxbe_configure... apparently "search-and-replace"
+	  error. This error was not noticed before because most NX platforms do not use
+	  colormapping.
+	* arch/rgmp and configs/rgmp.  Add architecture support and build
+	  configuration for RGMP.  RGMP is a project for running GPOS and
+	  RTOS simultaneously on multi-processor platforms. See
+	  http://rgmp.sourceforge.net/wiki/index.php/Main_Page for further
+	  information about RGMP.
+	* lib/stdio/lib_fclose.c: Must flush all buffered data when the file is closed.
+	  Instead, it was discarding the buffered data.
+	* lib/stdio: All output stream logic was modified to support CONFIG_STDIO_LINEBUFFER.
+	  If standard C buffered I/O is enabled (CONFIG_STDIO_BUFFER_SIZE > 0), then this
+	  option may be added to force automatic, line-oriented flushing the output buffer
+	  for putc(), fputc(), putchar(), puts(), fputs(), printf(), fprintf(), and vfprintf().
+	  When a newline is encountered in the output string, the output buffer will be
+	  flushed.  This (slightly) increases the NuttX footprint but supports the kind of
+	  behavior that people expect for printf.
+
+6.4 2011-06-06 Gregory Nutt <gnutt@nuttx.org>
+
+	* lib/drivers/cc1101: Add initial, functional CC1101 wireless driver
+	  (contributed by Uros Platise)
+	* arch/mips and configs/pcblogic-pic32mx: The MicroChip PIC32MX port is now
+	  code complete and ready to begin testing.  Unfortunately, it looks like
+	  testing will be delayed due to tool issues (My PICkit 2 will not work the
+	  the MPLAB debugger on PIC32; I will need to get a PICkit 3).
+	* drivers/net/e1000.c/h: A PCI-based E1000 Ethernet driver submitted
+	  by Yu Qiang.
+	* lib/net/lib_inetaddr.c: An implementation of the inet_addr() function
+	  submitted by Yu Qiang.
+	* arch/arm/src/lpc31xx and arch/arm/include/lpc31xx:  Renamed from lpc313x
+	  to make name space for other famiy members.
+	* arch/arm/*/lpc31xx: Added support for the LPC315x family (untested).
+	* sched/task_exithook.c: Functionality performed when a task exits or is
+	  deleted has been moved to a common file task_exithook.c.  Now exit()
+	  functionality (like flushing I/O and calling registered atexit()
+	  functions, etc.) will be performed when a task is deleted as well.
+	* mm/:  Added support for CONFIG_MM_SMALL. Each memory allocation has a
+	  small allocation overhead.  The size of that overhead is normally
+	  determined by the "width" of the address support by the MCU.  MCUs
+	  that support 16-bit addressability have smaller overhead than devices
+	  that support 32-bit addressability.  However, there are many MCUs
+	  that support 32-bit addressability *but* have internal SRAM of size
+	  less than or equal to 64Kb.  In this case, CONFIG_MM_SMALL can be
+	  defined so that those MCUs will also benefit from the smaller, 16-
+	  bit-based allocation overhead.
+	* lib/string/lib_strndup.c: Add standard strndup() library function.
+	* net/getsockname.c: Added standard getsockname() to return the local
+	  address associated with a socket.
+	* lib/stdio/lib_asprintf.c: Add asprintf()
+	* configs/olimex-lpc1766stk/ftpc:  Add a configuration to support
+	  testing of the FTP client shell.
+	* fd/fs_fdopen.c and net/net_checksd.c: Add support so that fdopen may
+	  be used with socket descriptors.
+	* net/recvfrom.c: Fix an error found in receiving small files via FTP:
+	  The small file is received a buffered in the readahead buffer, then the
+	  socket is disconnected.  When the app calls recvfrom, the socket is
+	  already disconnected and the buffered data is stranded.  Now, recvfrom
+	  will continue to return success after the socket is disconnected until
+	  the readahead buffer is drained.
+	* olimex-lp1766stk/ftpc/defconfig: Many configurations have the MTU 
+	  (CONFIG_NET_BUFSIZE) set to very small numbers, less then the minimum
+	  MTU size that must be supported -- 576. This can cause problems in
+	  some networks:  CONFIG_NET_BUFSIZE should be set to at least 576 in
+	  all defconfig files.  This has only been fixed in this defconfig file.
+
+6.5 2011-06-21 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/avr/src/avr and arch/avr/include/avr: Adds general support for
+	  the Atmel 8-bit AVR family.
+	* arch/avr/src/atmega and arch/avr/include/atmega: Adds support for the
+	  Atmel AVR ATMega family.
+	* arch/avr/src/at90usb and arch/avr/include/at90usb: Adds support for the
+	  Atmel AVR AT90USB family.
+	* configs/micropendous3: Adds a board configuration for the Opendous
+	  Micropendous 3 board.  This board may be populated with several different
+	  members of the Atmel AVR AT90USB family.
+	* configs/amber: This is a placehold for the Atmel ATMega128 Amber Web
+	  Server from SoC Robotics.  Not much present in this directory on initial
+	  check-in.
+	* configs/teensy: Adds a board configuration for the PJRC Teensy++ 2.0 board
+	  that features an Atmel AT90USB1286 MCU.
+	* fs/fat: Offsets, sector numbers, etc. need to be off_t, not size_t.  size_t
+	  is intended to be the maximum size of a memory object, not a file offset. This
+	  does not make any difference except on systems (like the AVR) where size_t
+	  is only 16-bits.
+
+6.6 2011-07-11 Gregory Nutt <gnutt@nuttx.org>
+
+	* drivers/mtd/ramtron.c, net/net_checksd.c, fs/fs_fdopen.c, and include/nuttx/mii.h:
+	  Several structural changes made to get a clean compile under the ez80 ZDS-II
+	  toolchain (no design changes).
+	* drivers/usbhost/usbhost_storage.c: Incorpated bugfixes reported by Sheref H.
+	  Younan:  (1) Read capacity logic read largest block, not the number of blocks
+	  and was, therefore, off by one, and (2) Some devices stall of get Max LUN request
+	  if they support only a single LUN.  Logic now assumes a single LUN if the get
+	  Max LUN request fails.
+	* include/nuttx/arch.h, lib/stdio/lib_libvsprintf.c, lib/stdio/lib_fputs.c: Add
+	  a new configuration option to support extracting strings from FLASH or EEPROM
+	  or other memories where the string data cannot be accessed by simply de-referencing
+	  a string pointer.
+	* arch/sim/src/up_romgetc.c: Used to test the basic logic to access strings
+	  without directly de-referencing a string pointer.
+	* arch/avr/src/avr/up_romget.c: Used to access strings that lie in the first
+	  64Kb of FLASH (But I still haven't figured out how to get strings to reside in
+	  FLASH without using the PROGMEM attribute).
+	* configs/teensy/src/up_spi.c: Correct reading of SD CD and WP pins (was reading
+	  the wrong register.  AVR SPI now appears to be functional.
+	* arch/avr/src/at90usb/at90usb_usbdev.c: Correct USB initialization.  Interrupts
+	  were being enabled BEFORE the interrupt handler was attached.
+	* configs/sure-pic32mx:  Add a configuration for the Sure Electronics, "Advanced USB
+	  Storage Demo Board," Model DB-DP11215 (http://www.sureelectronics.net/goods.php?id=1168).
+	  This board features the MicroChip PIC32MX440F512H MCU. (Untested on initial
+	  check-in).
+	* configs/stm3210e-eval/nsh2:  Add another NSH configuration for the STM32 with
+	  some different properties.
+	* CONFIG_NSH_CONDEV:  Add a configuration option to allow using a different character
+	  device (such a a different UART) for the NSH interface.  This allows, for example,
+	  debug output to come from the console device while using another device for NSH.
+	  There are some issues on initial check-in:  NuttX doesn't have termios and the
+	  console device has special properties that make using NSH awkward.  Examples:
+	  No CR-LF expansion, no character echoing, no command line editting.
+	* arch/arm/src/stm32/stm32_lowputc.c and stm32_serial.c.  Correct seversl bugs
+	  involving serial port configuration.  These bugs are only critical if you
+	  are trying to using multiple UARTs on STM32.
+	* configs/stm3210e-eval/src/up_lcd.c:  Add a driver for the STM3210E-EVAL's LCD.
+	* configs/stm3210e-eval/nx:  Add NX configuration for the STM3210E-EVAL.
+	* configs/nuttx/arch.h (and arch/arm/src/stm32, configs/*/src/up_buttons.c):
+	  Standardize interfaces exported for button support and button interrupts.
+	* configs/stm3210e-eval/src/up_buttons.c:  Add interrupting button support.
+	  Also fixes a few errors in STM3210E-EVAL button decoding.
+	* configs/stm3210e-eval/buttons: Add a configuration to exercise STM3210E-EVAL
+	  buttons.
+	* arch/arm/src/stm32/stm32_gpio.c:  GPIO interrupt handling for pin
+	  numbers were being aliased:  5-9 together and 10-15 together.  Extended
+	  the logic to peform decoding of GPIO interrupts and unique dispatching
+	  for all 16 pins.
+	* configs/stm3210e-eval/nxtext: Add a configuration for the apps/examples/nxtext
+	  example.  This example focuses on placing text on the background while
+	  pop-up windows occur.  Text should continue to update normally with or without
+	  the popup windows present.
+	* arch/arm/src/common/up_checkstack.c:  ARM stack overflow checking submitted
+	  by Hal Glenn.
+	* arch/arm/src/lpc17xx: Changes to compile successfully with no serial console
+	  (also submitted by Hal Glenn).
+	* graphics/nxfonts/nxfonts_convert.c:  Fixed a critical bug that caused
+	  when renderer some fonts with bits-per-pixel > 8
+	* graphics/nxbe/nxbe_move.c: Fixed an error in the graphics move logic (This
+	  was a previously untested interface).  Basically, there is some confusion
+	  between use of (x,y) as a relative offset or as an absolute position.
+	* graphics/nxbe/nxbe_close.c:  Fixed an important graphics system bug:
+	  When a window is closed, the display was not being updated.  The old
+	  window graphic was left on the display for a time.
+
+6.7 2011-08-02 Gregory Nutt <gnutt@nuttx.org>
+
+	* Makefile:  Added a export target that will bundle up all of the NuttX
+	  libraries, header files, and the startup object into an export-able
+	  tarball.
+	* arch/arm/src/lpc17xx/lpc17_can.h:  Correct some typos in the CAN
+	  register definitions.
+	* drivers/serial/serialirq.c:  Correct an error that can occur if the
+	  serial RX buffer becomes full.  Data is now discarded in that case;
+	  before, leaving data in the hardware would cause infinite interrupts
+	  one most MCUs since you must read the data in order to clear the
+	  interrupt.
+	* arch/arm/src/lpc17xx/lpc17_can.c:  Added a CAN driver contributed by
+	  Li Zhuoyi (Lzyy).
+	* include/stddefs.h and sys/types:  Added type wchar_t.
+	* fs/fat/fat_fat32dirent.c:  Move all FAT directory operations to this
+	  new file; Implement VFAT long file name support.
+	* fs/fat/fat_fat32dirent.c:  The configuration CONFIG_FAT_LCNAMES has
+	  been around for some time but never tested until now.  This setting
+	  will mimic the NT 8.3 file name behavior:  File names or extensions 
+	  may be all upper or all lower case (but not mixed).  If
+	  CONFIG_FAT_LCNAMES is not selected, all filenames are strictly upper
+	  case.
+	* configs/stm3210e-eval/nsh2:  Console is back on UART1; Added
+	  examplex/nx as an NSH "built-in" command as a demonstration.
+	* fs/fat/fs_fat32dirent.c:  Fix an important bug in the directory
+	  allocation (fat_allocatedirentry()).  I looks like it could be
+	  initializing the wrong sectors! NOTE:  This function was in
+	  fs_fat32utils.c in earlier releases.
+	* arch/arm/src/stm32_sdio.c: Correct an important DMA-related bug;
+	  SDIO transfer completion events and DMA completion eventes were
+	  not being coordinated correctly.
+	* configs/stm3210e-eval/nsh2: Enable FAT long file name support
+	* sched/sem_timedwait.c: Add the standard sem_timedwait() interface.
+	* graphics/nxfonts/nxfonts_getfont.c, nxfonts_bitmap.c,
+	  Makefile.source, and include/nuttx/nxfonts.h: Support for multiple
+	  fonts included.  A new interface, nxf_getfonthandle() takes a font
+	  ID and returns a handle that is now used at all other font interfaces
+	  to specify which of the multiple fonts to use.
+	* arch/arm/src/lpc17xx/lpc17_syscon.h: Fix typo (reported by Li Zhuoyi).
+	* configs/stm3210e-eval/nsh2: Extended to support two new commands:
+	  'msconn' will connect the USB mass storage device; 'msdis' will
+	  disconnect the USB storage device.
+	* tools/bdf-converter.c.  This C file is used to build the bdf-converter
+	  program.  The bdf-converter program be used to convert fonts in Bitmap
+	  Distribution Format (BDF) into fonts that can be used in the NX graphics
+	  system.
+	* include/nuttx/nx:  Move all NX header files from include/nuttx to 
+	  include/nuttx/nx.
+	* drivers/usbdev/usbdev_usbstorage.c and arch/arm/src/stm32/stm32_usbdev.c:
+	  Correct a memory leak when the USB mass storage driver is connected and
+	  then disconnected from the target.  The write requests were not being
+	  freed.  NOTE that the unregister logic in the STM32 needed to call
+	  stm32_reset() in order to return the write requests to the USB mass
+	  storage driver; it is possible that a similar but could exist for other
+	  architectures.
+	* graphics/nxfonts/nxfonts_*.h:  Add serveral more new fonts
+	* arch/z80/src/ez80/ez80_serial.c: Fix some errors in serial driver
+	  setup for UART1 (submitted by Paul Osmialowski).
+	* drivers/input/tsc2007.c and include/nuttx/input/*:  Add a generic NuttX
+	  touchscreen interface.  Add a driver for the TI TSC2007 touchscreen
+	  controller.
+	* graphics/nxglib/lcd and fb:  Add low level routines to set single pixels.
+	* lib/math/lib_b16atan2.c:  Add a fixed precision atan2() function
+	* graphics/nxglib/nxglib_splitline.c: Add logic to divide a wide line into
+	  trapezoidal components.
+	* graphics/nxmu/nx_drawline.c, graphics/nxsu/nx_drawline.c,
+	  graphics/nxtk/nxtk_drawlinewindow.c, graphics/nxtk/nxtk_drawlinetoolbar.c:
+	  Add new line drawing interfaces (untested).
+
+6.8 2011-08-19 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/lpc17xx/chip.h:  Fix some chip memory configuration errors
+	  for the LPC1764, LPC1756, and LPC1754 (submitted by Li Zhuoy (Lzzy))
+	* arch/arm/src/lpc17xx/lpc17_can.h:  Revised CAN driver submitted by
+	   Li Zhuoy (Lzzy).  The driver now supports both CAN1 and CAN2.
+	* arch/arm/sim/up_lcd.c: Add a simulated LCD driver.
+	* configs/stm3210e-eval/nxlines:  Added a configuration to build
+	  examples/nxlines.
+	* arch/graphics: Used apps/examples/nxlines to (finally) verify the NX
+	  trapezoid drawing functions and (wide) line drawing functions.
+	* arch/rgmp and configs/rgmp.  Yu Qiang has ported RGMP to the OMAP4430 (arm)
+	  pandaboard and release the new RGMP 0.3 version. The main changes are: (1)
+	  Separate configs/rgmp/x86 and configs/rgmp/arm configuration directory, and
+	  (2) Extract architecture dependent code in arch/rgmp/include and
+	  arch/rgmp/src into corresponding x86/ and arm/ directories.
+	* arch/arm/src/kinetis, arch/arm/include/kinetis, configs/kwikstick-k40:
+	  Add a directory structure to support the port to the Kinetis KwikStik-K40.
+	  There is no real substance in the initial check-in; only the directory
+	  structure and skeleton files (Code complete on 8/15/11).
+	* arch/arm/include/armv7-m, arch/arm/src/armv7-m, etc.: Rename all cortexm3
+	  directories and files to armv7-m; Change name of of all CORTEXM3 constants
+	  to ARMV7M.  This is a major namespace change needed to cleanly support the
+	  ARM Cortex-M4 which is also in the ARMv7 M Series (specifically, ARMv7E-M).
+	* sched/sig_initialize.c, sig_received.c, and mq_waitirq.c.  Fixed several
+	  critical bugs related to signal handling initialization and for signals
+	  the wake up tasks that are waiting to send or receive message queues.  In
+	  the first two files, errors would prevent proper allocation of signal-related
+	  structures from interrupt handlers.  In the second, there was missing
+	  "clean-up" logic after a signal occurred, leaving the message queue in
+	  a bad state and resulting in PANICs.  All are important.  (submitted by
+	  hkwilton).
+	* arch/arm/src/kinetis:  Added header files defining all Kinetis registers
+	  and bit fields within all Kinetis registers.
+	* configs/twr-k60n512:  Add support for the Kinetis K60 Tower board
+	  (TWR-K60N512).
+	* drivers/can.c:  Fixed a semaphore overflow problem in the CAN driver
+	  (reported by Li Zhouy (Lzzy)).
+	* 8/18/2011: The basic port to the FreeScale Kinetics TWR-K60N512 board is
+	  now functional.
+	* confgs/twr-k60n512: Add Kinetics TWR-K60N512 NSH configuration.
+	* drivers/analog and include/nuttx/analog: Add ADC driver infrastructure
+	  and TI ADS1255 driver developed and submitted by Li Zhouy (Lzzy)).
+	* arch/arm/stm32/stm32_sdio.h and drivers/mmcsd/mmcsd.c:  Add logic to
+	  multiplex usage of the GPIO pins (contributed by Uros Platise).
+	* configs/twr-k60n512/nsh:  Added and verified a NuttShell (NSH)
+	  configuration for the Freescale, Kinetis TWR-K60N512 board.
+
+6.9 2011-09-11 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/kinetis/kinetis_sdhc.c: SDHC driver for Kinetis parts.
+	  Initially check-in is just a crude port of the STM32 SDIO driver.
+	  Much more work is needed.
+	* graphics/, include/nuttx/nx:  Add new NX interfaces for drawing
+	  circles -- both circular outlines and filled circles.
+	* graphic/nxglib/nxglib_spitline.c:  Add a "fudge factor" that eliminates
+	  some problems for rendering nearly horizontal, wide lines.  Hmm...
+	  but I suspect this fudge factor also leads to new problems rendering
+	  very thin, nearly horizontal lines.  More tuning is needed.
+	* drivers/analog, include/nuttx/analog, arch/arch/src/lpcxx:  (1) Add
+	  updates to the ADS1255 driver, (2) fix errors from my last merge (sorry),
+	  (3) Add DAC infrastructure, (4) add AD5410 DAC driver, and (5) add
+	  LPC17xx ADC and DAC drivers.  All contributed by Li Zhuoyi (Lzyy).
+	* tools/mkexport.sh:  Extended the script that implements the top-level
+	  'make export' logic.  The script now also finds and bundles up all of
+	  the architecture-specific header files as well.
+	* drivers/arch/arm/src/stm32/stm32_i2c.c:  Add a reset to the I2C
+	  initialization logic to prevent spurious interrupts when the I2C
+	  interrupts are enabled (submitted by Uros Platise).
+	* Scripts/makefiles/documents.  Several adjustments, corrections and
+	  typo fixes so that NuttX will build correctly on FreeBSD using the
+	  ASH shell (submitted by Kurt Lidl).
+	* drivers/mtd/flash_eraseall.c:  Add a callable function that accepts
+	  the path to a block driver and then erases the underlying FLASH memory
+	  (assuming that the block driver is an MTD driver wrapped in the FTL
+	  layer).  Hmmm... this is probably not the best long term solution;
+	  flash_eraseall() should be a user-callable function that operates
+	  one driver interfaces; not an internal, OS function that operates
+	  on directly on block drivers.
+	* drivers/bch:  Fixed some important bugs in the BCH driver (noted by
+	  Li Zhuoyi (Lzyy)).  This would have effected any large reads or writes
+	  (larger than the hardware sector size).
+	* arch/*/src/Makefile:  Use of -print-libgcc-file-name to get path to
+	  libgcc.a may select the wrong libgcc.a if a multilib toolchain (like
+	  CodeSourcery) is used. This can be a serious problem and can cause
+	  crashes on Cortex-M3 if the ARM libgcc is used, for example.  The fix 
+	  is to include ARCHCPUFLAGS on the gcc command line when asking it to
+	  -print-libgcc-file-name.
+	* lib/time/lib_gmtimer.c:  Correct several calculations that could lead
+	  to errors in dates.
+	* drivers/pm: Add the beginnings of a NuttX power management sub-system.
+	* arch/arm/src/stm32/stm32_irq.c:  Fix a error introduced in 6.8.
+	  Timeout calculation uses clock_settime() instead of clock_gettime().
+	  Pretty gross error, but actually it works with the side effect of setting
+	  a bad time.
+	* drivers/mtd/at24xx.c: Driver for I2C-based at24cxx EEPROM submitted by
+	  Li Zhuoyi (Lzyy).
+	* arch/arm/src/lpc17xx/lpc17_i2c.c: I2C driver for the NXP LPC17xx family
+	  submitted by Li Zhuoyi (Lzyy)
+	* arch/arm/src/stm32_i2c.c:  Correct two issues with the STM32 I2C driver:
+	  (1) Clocking needs to be based on PCLK1, not HCLK and fast speed settings
+	  need some additional bits; and (2) Correct a hang that will occur on
+	  I2C1 if FSMC is also enabled.
+	* drivers/sensors/lm75.c and include/nuttx/sensors/lm75.h:  Add an LM-75
+	  temperature sensor driver.
+	* configs/stm3210e-eval/src/up_lm75.c:  Add support for the LM-75 on the
+	  STMicro STM3210E-EVAL board.
+	* sched/clock_gettime.c:  Correct an error in the tv_nsec calculation
+	  that happens only config CONFIG_RTC is enabled.
+	* arch/arm/src/stm32/stm32_i2c.c:  Correct some bugs related to waiting
+	  for the I2C STOP condition to be cleared.
+
+6.10 2011-10-06 Gregory Nutt <gnutt@nuttx.org>
+
+	* lib/stdio/lib_fopen.c:  Fix an error in fopen(); the file pointer was not
+	  being positioned at the end of the file when the "a" and "a+" modes are
+	  used.  There are other issues with the "a+" modes (see the top-level TODO
+	  list).
+	* drivers/usbdev/cdc_serial.c and include/nuttx/usb/cdc.h and cdc_serial.h:
+	  Add support for the CDC ACM serial device class.
+	* fs/fat/fs_fat32.c: Fix a critical bug in the write logic:  It a tiny write
+	  cross a sector boundary, then two sector writes will occur.  The first part
+	  in the first sector may be written to the wrong sector number.
+	* fs/fat/fs_fat32util.c:  Fix a stray write into the FAT (always sector 964 on
+	  FAT32).  This bug will cause some lost chains.  I'm sure this bug could
+	  corrupt files but at present, the only thing I have seen is that before
+	  fixing this bug, the Windows chkdsk utility would report these lost chains.
+	* arch/arm/src/stm32/stm32_i2c.c: Driver can now operate in a faster polled
+	  mode (at the expense of using more cpu cycles).
+	* arch/arm/src/stm32/stm32_i2c.c: Add trace debug capability.  Enabled with
+	  CONFIG_I2C_TRACE.
+	* arch/arm/src/stm32/stm32_i2c.c: Fix another bug where I2C conflicts with FSMC
+	  being enabled.  That time at the tail end of the transaction where there is
+	  an unfinished stop condition.
+	* sched/mq_timedreceive.c and sched/mq_timedsend.c:  The count of threads
+	  waiting on the message queues was not being decremented after a timeout.
+	  This would cause the accounting logic to become out of sync and the, perhaps,
+	  an assertion to be triggered.  This is an important bug and fixes a
+	  potential crash when using mq_timedreceived() and mq_timedsend().
+	* sched/mq_sndinternal.c: Related to the above, the send logic was incrementing
+	  the wrong counter when it waited as part of the mq_timedsend.c logic.
+	* fs/fat:  Fix an error in the long file name logic:  If the long file name
+	  is an even multiple of 13 bytes in length, then it should not include a
+	  NULL terminating character.  Fix contributed by Kaushal Parikh.
+	* configs/sim/nx11: Created a separate configuration to build the NX
+	  example using the a simulated framebuffer driver on an X11 window.  This
+	  example has been verified on Ubuntu 9.09 (it does not work on Cygwin).
+	* arch/sim/src/up_touchscreen.c and up_x11eventloop.c: Adds support for a
+	  simulated NuttX touchscreen device using mouse/pointer feedback from an
+	  x11 window.
+	* configs/sim/touchscreen: Adds a configuration to verify the simulated
+	  touchscreen driver (Does not work on Cygwin).
+	* configs/sam3u/touchscreen: This is the configuration that I plan to use
+	  to verify the SAM3U-EK touchscreen driver.  However, as of this writing,
+	  there is no touchscreen driver for the board.
+	* CONFIG_RTC_HIRES: Add an option to support either a high-resolution RTC
+	  that completely replaces the system timer tick but may overflow and lose
+	  time when the MCU is off and also for a low-resolution (1 sec/tick) RTC
+	  that can run until 2106 with no overflow.  But in this latter case, higher
+	  resolution time must come from the system timer.
+	* CONFIG_SYSTEM_UTC: Removed support for the UTC system timer.  It just
+	  doesn't do enough to be worth the CPU cycles or the complexity.
+	* CONFIG_SYSTEM_TIME16: Added support for an optional 64-bit system timer.
+	* fs/fat/fs_fat32util.c: Add support for FAT date/time stamps; Enabled via
+	  CONFIG_FS_FATTIME.
+	* arch/arm/src/sam3u/sam3u_spi.c: Add an SPI driver for the AT91SAM3U.
+	* drivers/input/ads7843e.c and include/nuttx/input/ads7843e.h: Add a
+	  driver for the TI ADS7843E touchscreen controller.
+	* fs/nxffs/nxffs_open.c:  Fix an error when a file is open for writing; since
+	  the file will get deleted it is already exists, there must be a check if
+	  there are other open references to the file.
+	* arch/arm/src/stm32/stm32_sdio.c: Fixed an error where during SDHC
+	  initialization interrupts were not being re-enabled.  Caused more subtle
+	  errors than you would think.
+	* arch/arm/src/stm32/stm32_i2c.c:  Fixed an error where I2C timeouts appeared
+	  to be successful transfers.
+	* configs/sim/nsh2: Add another simulated NSH configuration.  This one
+	  supports X11 graphics, C++, and exercises graphic functions as built-in
+	  commands.
+
+6.11 2011-11-12 Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/stm32/Make.defs:  Don't build stm32_rtc.c if CONFIG_RTC is not
+	  selected.  Doing so will cause errors if other configuration dependencies
+	  are not met.
+	* configs/stm3210e-eval/src/up_lcd.c:  Color corrections for SPFD5408B LCD
+	  do not work with R61580 LCD.
+	* configs/pic32-starterkit: Beginning of a configuration for the Microchip
+	  PIC32 Ethernet Starter Kit.  Hmmm.. I don't have a clue how to test this
+	  with no serial port?!
+	* lib/stdio/lib_fclose.c: fclose() always returns an error (EOF) when it
+	  closes a read-only file.  This is because it calls flush() which will
+	  fail on read-only files.  No harm is done other that a bad value is
+	  returned.
+	* arch/sim/src/Makefile: Correct build issue for sim/nsh2 target.  Old
+	  libboard.a was not being cleaned.
+	* arch/mips/src/pic32mx/pic32mx-gpio*.c:  Add GPIO support for the PIC32MX.
+	* configs/sure-pic32mx/src/up_leds.c and up_buttons.c:  Add button and LED
+	  support for the Sure Electronics PIC32MX board.
+	* configs/ea3152:  Add a configuration for the Embedded Artists LPC3152
+	  daughter board (with the same base-board used with configs/ea3131)
+	* graphics/nxmu/nx_getrectangle.c, graphics/nxsu/nx_getrectangle.c,
+	  graphics/mxtk/nx_getwindow.c, graphics/nxmu/nx_gettoobar.c:  New
+	  interfaces to read from graphics memory
+	* graphics/nxbe/nxbe_bitmap.c: Fix an error in the error handling that
+	  can cause valid bitmaps to fail to render.
+	* include/nuttx/rgbcolors.h: Fix errors in some 16- and 8-bit color
+	  conversion macros.
+	* tools/incdir.sh: Fix issues when g++ is used as the compiler.  It was
+	  not being recognized and handled properly.
+	* graphics/nxsu/nx_releasebkgd.c: Fix a bad cast that was causing
+	  problems with the background window was released.
+	* fs/nxffs/nxffs_pack.c:  Correct a critical bug in the NXFFS file system:
+	  When repacking the filesystem, there was a missing check to see if an
+	  inode structure would fit at the end of a block.  This is a rare case
+	  if the block size is large, but can be common for tiny block sizes
+	  and results in a crash and file system corruption.
+	* fs/nxffs/nxffs_initialize.c:  Fix an initialize error.  If the FLASH
+	  is full on power-up, NXFFS will fail to initialize correctly.
+	* fs/nxffs/nxffs_write.c and nxffs_pack.c:  Fix an error that can occur
+	  when attempt to write to FLASH volume that is completely full but
+	  has no value inodes on it.
+	* drivers/mtd/at24xx.c:  Now supports a configurable block size that
+	  supports using "clusters" of AT24 pages as blocks.  This allows bigger
+	  block sizes and more efficient use of EEPROM when the AT24 is used to
+	  support a file system (such as NXFFS). (Contributed by Hal Glenn).
+	* include/nuttx/rgbcolors.h: More fixes to RGB color conversion
+	  macros.
+	* arch/arm/src/common/up_createstack.c and up_usestack.c:  For ARM EABI
+	  the stack must be aligned to 8-byte boundaries.  This is necessary for
+	  passing aligned floating point values under EABI.  Fix contributed by
+	  David Sidrane.
+	* Numerous changes and fixes to the PIC32 interrupt handing logic. The
+	  PIC32 port is almost complete but still not ready for prime time.
+
+6.12 2011-12-06 Gregory Nutt <gnutt@nuttx.org>
+
+	* fs/fat/fs_fat32util.c and fs_fat32.h: Logic extended to look in up to
+	  four partitions for a valid FAT file system.
+	* drivers/input/tsc2007.c: Add support for 8-bit conversions; make sure
+	  that A/D converters are active before requesting conversions.
+	* drivers/mmcsd0/mmcsd_sdio.c: Increase capacity variable from size_t
+	  to uin64_t (if available) so that SD cards with capacities greater
+	  than 4Gb can be supported.
+	* fs/fat/fs_fat32dirent.c: The root directory structure is different
+	  from other directories.  When formatted by Windows, it is not initialized
+	  at all.  Some additional special handling is required to initialize the
+	  root directory entry to interoperate correctly with windows.
+	* fs/fat/fs_fat32util.c: In fat_systime2fattime(void) should be
+	  clock_gettime() and not clock_gettime().  Also, there is a place where
+	  FAT date is used instead of FAT time. (Thanks to David Sidrane).
+	* arch/arm/src/stm32 and arch/arm/include/stm32:  Add support for the
+	  STM32F40xxx family of MCUs.
+	* configs/stm3240g-eval:  Add framework for the STMicro STM3240G-EVAL
+	  board.
+	* include/sys/types.h:  wchar_t is a builtin type in C++ and its
+	  declaration can cause errors with certain C++ compilers.
+	* sched/sig_timedwait.c:  Fix signal handling when the returned info
+	  is NULL.  Before this change, it would derefence a NULL pointer
+	  in this case.
+	* graphics/nxfonts/nxfonts_sans17x22.h and nxfonts_sans20x26.h:  Add
+	  some very small sans serif fonts.
+	* graphics/nxfonts/nxfonts_sans17x23b.h and nxfonts_sans20x27b.h:  Add
+	  corresponding sans serif bold fonts.
+	* drivers/input/ads7843e.c and tsc2007.c:  Fix some errors in the poll
+	  setup error checking that was cloned into both drivers.
+	* sched/mq_notify.c:  Set errno appropriately on failures.  There are
+	  still several message queue functions that do not set errno!
+	* arch/arm/src/stm32: Fixes to several STM32F40xxx files (contributed by
+	  Mikhail Bychek).
+	* configs/stm3210e-eval/src/up_lcd.c:  Fix banding problem on the R61580
+	  LCD
+	* configs/stm3240g-eval/ostest:  The basic STM32F40xx bringup is functional
+	  (11/12/06) for the STM3240G-EVAL board and passes the OS test.
+	* configs/stm3240g-eval/nsh:  Adds a NuttShell (NSH) configure for the
+	  STM3240G-EVAL board.
+
+6.13 2012-xx-xx Gregory Nutt <gnutt@nuttx.org>
+
+	* arch/arm/src/stm32/stm32f40xxx_dma.c:  Add DMA support for the STM32 F4
+	  family (untested on initial check-in)
+	* arch/arm/src/armv7-m/up_fpu.c:  Add logic for saving an restoring VFP
+	  floating point registers on context switches (but also disable the FPU
+	  because CodeSourcery doesn't support hard flowing point!)
+	* arch/arm/src/stm32/chip/stm32_eth.h:  Add Ethernet register definitions
+	  for the STM32 F4.
+	* arch/arm/srcm/stm32/stm32_eth.c:  Adds an Ethernet driver for the STM32 F4.
+	* arch/arm/srcm/stm32/stm32_dac.c and stm32_adc.c: "Skeleton" files for STM32
+	  DAC and ADC drivers.  The actual logic will come later.
+	* arch/arm/srcm/stm32/stm32_eth.c:  There may be a few more lurking bugs, but
+	  the STM32 Ethernet driver appears to be fully functional on the STM3240G-EVAL.
+	* arch/arm/srcm/stm32/stm32_eth.c:  Fix an error in clearing abnormal interrupt
+	  events.
+	* configs/stm3240g-eval/dhcpd:  Add a DCHP daemon configuration for the
+	  STM3240G-EVAL board.
+	* configs/stm3240g-eval/nettest:  Add a network test configuration for the
+	  STM3240G-EVAL board.
+	* arch/arm/srcm/stm32/stm32_rtc.c, stm32f10xxx_rtc.c, and stm32f40xxx_rtc:
+	  Broke out separate drivers to handle the very different RTC implementations
+	  in the STM32 F1 and F4 family.
+	* arch/arm/srcm/stm32/stm32f10xxx_rtc.c:  STM32 F4 RTC is functional (12/14/2011)
+	* net/uip-arp.c: Fix compilation issue with CONFIG_NET_ARP_IPIN
+	* include/nuttx/pwm.h and drivers/pwm.c:  Add an interface definition and a
+	  "upper half" driver for PWM output.
+	* arch/arm/src/stm32/stm32_pwm.c:  Added a PWM "lower half" driver for the
+	  STM32.  The initial check-in is little more than a framework for the driver.
+	* arch/arm/src/stm32/stm32_usbdev.c:  Corrected two CRITICAL errors in the USB
+	  device-side driver:  (1) Handling of data overrun condition was wrong.  When
+	  there was no further memory to accept further OUT endpoint data, the driver
+	  would hang with infinite interrupts; (2) the logic in setting toggle bits
+	  was not correct.  However, this driver has functioned for a long time until
+	  the particular condition that revealed the bug occurred.  My impression is
+	  that this latter bugfix also fixes some STM32 USB performance problems.
+	* configs/hymini-stm32v: A configuration for the HY-Mini STM32v board contributed
+	  by Laurent Latil.  Theses changes also include support for the STM32F103VCT6. 
+
+