nuttx/ChangeLog

0.1.0 2007-03-09  Gregory Nutt <spudmonkey@racsa.co.cr>

	* Initial Release
	* Support for Linux user mode simulation and TI
	  TMS320C5471 (Arm7) provided

0.1.1 2007-03-14  Gregory Nutt <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* Fix error in handing signed decimal in vsprintf().
	* Major restructuring of header files to get closer to
	  POSIX compliance.
	* Eliminate compilation warnings that 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 <spudmonkey@racsa.co.cr>
	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* Verfied 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 <spudmonkey@racsa.co.cr>

	* 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 functionalit)
	* Added mount() and umount()
	* Fix bug in memcmp return value
	* Fix errors in timeslice calculation (several places)
	* Added missing irqrestore() in timer_deletall().
	* close() was not closing the underlying device.
	* Added fsync()
	* Added strspn() and strcspn()

0.2.6 2007-05-26 Gregory Nutt <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>
	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* Removed unused uIP files
	* sched/, mm/, and net/ subystem 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 readahead buffer logic
	* examples/nettest uses larger buffers
	* Improved ACK handling in send() to better hander deferred acknowledgements
	  and polling intervals.  Greatly improves send performance.

0.3.4 2007-12-10 Gregory Nutt <spudmonkey@racsa.co.cr>

	* 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 verifed 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 <spudmonkey@racsa.co.cr>

	* 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 was well (examples/nsh)

0.3.6 2008-01-06 Gregory Nutt <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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.  Effects all architectures.

0.3.8 2008-02-10 Gregory Nutt <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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 <spudmonkey@racsa.co.cr>

	* 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-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>

	* 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 '#'