ReleaseNotes

        Pettit.

    * Networking:

      - Driver Statistics: Most network drivers do not support statistics.
        Those that do only supported them when DEBUG is enabled.  Each
        driver collected an architecture specific set of statistics and
        there was no common mechanism to view those statistics.  Thus,
        the driver feature was mostly useless.  This release standardizes
        the driver statistics and puts the definition in the common network
        device structure defined in netdev.h where they can be accessed by
        network applications.  All Ethernet drivers that collect statistics
        have been adapted to use these common statistics.

    * Simulation Platform:

      - W25 FLASH:  Added support for W25 FLASH simulation. From Ken Pettit.
      - HOSTFS: Added support for the HOSTFS file system (see "File Systems",
        above).

    * Atmel SAMV7:

      - SAME70:  Added support for the SAME70 family of chips.
      - Tickless: SAMV7 now supports the tickless mode of operation.

    * Atmel SAMV7 Drivers:

      - MPU:  Added MPU and protected build support.
      - QSPI:  Added a QuadSPI FLASH driver.  This driver operates in the
        memory-mapped, Serial Memory Mode (SMM).
      - FLASH:  Added support to write on-chip FLASH.
      - Timer/Counter:  TC driver ported to SAMV7 from the SAMA5.  Free-running
        and one-short timer logic also ported.
      - PCK: Brought programmable clock (PCK) logic from SAMA5 into SAMV7.
      - Timer/Counter:  Support PCK6 as an optional source for the timer/
        counter clock.

    * Atmel SAMV7 Boards:

      - SAME70-Xplained:  Add NSH and networking configurations for the
        SAME70 Xplained board.  Includes verified support for serial console,
        LEDs, buttons, SDRAM, HSMCI SD card, and networking.
      - SAMV7-XULT and SAME70-Xplained: If Tickless mode is selected then
        enable PCK6 as a timer/counter clock source

    * STMicro STM32:

      - CCM PROCFS: Is no longer a part of the 'base' procfs entries and can
        now only be supported via run time registration with
        CONFIG_FS_PROCFS_REGISTER=y.

    * STMicro STM32 Drivers:

      - Timers:  Add a compatible lower-half timer driver for use with the
        common timer upper-half driver.  From Wail Khemir.

    * STMicro STM32 Boards:

      - STM32F4-Discovery: Add low level support for the Zero Cross driver
        for the STM32F4-Discovery.  From Alan Carvalho de Assis.
      - STM32F4-Discovery: Add board config to support for the MAX6675. From
        Alan Carvalho de Assis.

    * C Library/Header Files:

      - bsearch():  Added the bsearch() function from NetBSD.
      - freopen():  Added support for freopen().
      - strftime():  Added day-of-week support (when avaialable).

    * Tools:

      - nxstyle: Add crappy style checking tool nxstyle.c.  See thee tools/
        README file for more info.

    * Applications: NSH

      - mksmartfs command: Add configuration option to supported multiple
        rootdirectories. From Ken Pettit.
      - Add support for 'basename' and 'dirname' commands.
      - set command:  Like bash, NSH set command now strips off any leading
        or trailing whitespace.
      - mount command: The mount commands now accepts mount options
        (currently needed only for the hostfs file system).  From Ken
        Pettit.
      - losetup command:  NSH no longer calls losetup() and loteardown
        directly. Now it opens /dev/loop and accomplishes these things
        using ioctl() calls.
      - ifconfig command:  If CONFIG_NETDEV_STATISTICS=y, then print the
        network driver statistics in the ifconfig.
      - ifconfig, ifup, and ifdown:  These commands now uses /proc/net/<dev>
        to view network device configuration and status and /proc/net/stat
        to show network statistics.  A consequence of this is that you
        cannot view this network information if the procfs is not enabled
        and mounted at /proc.
      - losmart command:  Added a new NSH losmart command.  losmart setups
        up a loop device for the smart MTD driver similar to losetup but
        with different syntax.  From Ken Pettit.
      - ps command:  The 'ps' command now uses /proc/<pid>/ to obtain task
        status information.  A consequence of this is that you cannot use
        the 'ps' command if the procfs is not enabled and mounted at /proc.
 
    * Applications: apps/system:

      - apps/system/hexed:  Port the hexed command line hexadeciamal editor
         to Nuttx.  See http://apps.venomdev.net/hexed/.

    * Applications: apps/fsutils:

      - apps/fsutils/smartfs: Move into apps/fsutils from kernel, now uses
        only open and ioctl.  From Ken Pettit.

    * Applications: apps/examples:

      - apps/examples/fstest:  Add a generic file system test.  This is
        essentially the same as examples/smart, but has all of the SmartFS
        specific logic ripped out.  This was created for testing the new
        TMPFS.
      - apps/examples/zerocross: Add a Zero Cross application example. From
        Alan Carvalho de Assis.
      - apps/examples/media:  Add a simple test for access of media via a
        block driver or MTD driver.

Bugfixes.  Only the most critical bugfixes are listed here (see the
ChangeLog for the complete list of bugfixes and for additional, more
detailed bugfix information):

    * Core OS:

      - Fixed an error in clock_timespec_subtract().  Found by Lok.
      - pthreads: CRITICAL BUGFIX: Logic was wiping out the indication that
        of the type of a pthread.  Hence, it could be confused as a task.
        Found because this was causing a crash when /proc/nnn/cmdline was
        printed.

    * File System/Block Drivers:

      - SMART MTD: Fix some Smart wear-leveling bugs.  Fixed SmartFS wear
        level error that occurs when the logical sector size is too small to
        save all wear level status bytes in a single sector.  Logical
        sectors 1 and 2 were simply not being allocated and then the
        read_sector and write_sector routines were failing.  From Ken
        Pettit.

    * Graphics/Graphic Drivers:

      - ILI9432:  Fixed errors in orientation. Portrait, RPortrait, and 
        Landscript should work correly now.  They were displayed mirrored.
        From  Marco Krahl.

    * Common Drivers:

      - CAN:  Fix a problem in the CAN upper-half driver that occurs only
        for CAN hardware that support a H/W FIFO of outgoing CAN messages.
        In this case, there can be a hang condition if both the H/W and
        S/W FIFOs are both full.  In that case, there may be no event to
        awaken the upper half driver.  Add a new (conditional) CAN upper
        half interface called can_txready() that can be used by the lower
        half driver to avoid this hang condition.
      - MS58xx:  Fix some issues with initialization and with CRC
        calculation.  From Karim Keddam.
      - W25: Fixed W25 FLASH driver page read/write logic. From Ken Pettit.

    * Atmel SAMV7 Drivers:

      - USART1 pin configuration: Reconfigure System I/O when using USART1.
        From Frank Benkert.
      - MCAN:  Added a call to can_txready() to the MCAN driver.

    * STMicro STM32 Drivers:

      - stm32 F4:  Fix some TIM12 pin mappings.  From Max Kriegleder.

    * STMicro STM32 Boards:

      - STM32F429i-Disco:  Calculated partition boundries based on page
        block sizes but mtd_partition() is expecting calculations based on
        erase block size. From Alan Carvalho de Assis.

    * C Library/Header Files:

      - sys/types.h: When building on a 64-bit machine, the size of size_t
        should be 64-bits. In general, I believe that sizeof(size_t) should
        be the same as sizeof(uinptr_t).  mmsize_t should always be 32-bits
        in any event.  The last change to stddef has been backed out.  With
        these changes, the simulator builds without errors or warnings an a
        64-bit machine.

    * Applications: apps/nshlib:

      - The I/O buffer, g_iobuffer, should not be a global buffer.  That
        will not work in an environment where there are multiple NSH
        sessions.  The I/O buffer must, instead, be a part part of the
        session-specific data defined in nsh_console.h.

NuttX-7.14 Release Notes
------------------------

The 114th release of NuttX, Version 7.14, was made on January 28, 2016,
and is available for download from the Bitbucket.org website.  Note
that release consists of two tarballs:  nuttx-7.14.tar.gz and
apps-7.14.tar.gz.  These are available from:

    https://bitbucket.org/patacongo/nuttx/downloads
    https://bitbucket.org/nuttx/apps/downloads

Both may be needed (see the top-level nuttx/README.txt file for build
information).

Additional new features and extended functionality:

    * Core OS:

      - modules:  Add support for kernel modules:  insmod, rmmod, support
        functions.  procfs support for user lsmod functioniality.
      - SIGEV_THREAD:  Add support for the SIGEV_THREAD notification method
        in struct sigevent.  This initial implementation will only work in
        the FLAT build since it utilizes the work queue for signal
        callbacks.  See the top-level TODO file for additional details.
      - 64-Bit Timer:  If the 64-bit timer is selected, then use it whenever
        clock_systimer() is called rather then chopping the 64-bit timer
        down to 32-bits.  Add a new type, systime_t to represent the 32- or
        64-bit system timer. This eliminates clock_systimer32() and
        clock_systime64(); there is now only clock_systimer().

    * Common Device Drivers:

      - Telnet Driver: Move the Telnet driver from apps/ to
        nuttx/drivers/net.  It is a driver a belongs in the OS.   Now works
        like the loop device:  A new interface called telnet_initialize()
        registers a telnet session "factory" device at /dev/telnet.  Via
        ioctl, the factory device can create instances of the telnet
        character devices at /dev/telnetN to support Telnet sessions.
      - PCA9635PW:  Add a driver for the PCA9635PW I2C LED driver IC which
        can be used to control the intensity of up to 16 LEDs.  From
        Alexander Entinger.
      - MCP9844: Driver for the MCP9844 I2C digital temperature sensor with
        a selectable resolution.  From Alexander Entinger.
      - PN532: Add driver for the NXP PN532 NFC-chip.  From Janne Rosberg
        and others at Offcode Ltd.
      - LSM9DS1:  Add driver for the STMicro LSM9DS1 chip. The LSM9DS1 is a
        system-in-package featuring a 3D digital linear acceleration sensor,
        a 3D digital angular rate sensor, and a 3D digital magnetic sensor.
        From Paul Alexander Patience.
      - CAN Interface:  Add more extensive error reporting capaibility to
        the CAN interface definitions.  From Frank Benkert.
      - SPI Interface:  Add an optional hwfeatures() method to the SPI
        interface.

    * Simulation Platform:

      - NSH configuration uses the custom start up scriptwith a read-only
        passwd file.  Includes hooks for an MOTD message.

    * ARMv7-R

      - ARMv7-R:  Add basic architecture support for the ARMv7-R processor
        family.

    * Atmel AVR:

      - Atmega2560:  Add support for the Atmega2560.  From Dimitry Kloper.
      - debug.h: Add an AVR-specific header file used when the AVR MEMX
        pointer is used.  From Dimitri Kloper.

    * Atmel AVR Boards:

      - Arduino-Mega2560: Add support for the Arduino-Mega2560.  From
        Dimitry Koper.

    * Atmel SAMV7 Drivers:

      - Port the TRNG driver from the SAMA5D3/4 to the SAMV7.
      - Port the WDT driver from the SAMA5D3/4 to the SAMV7.
      - Add an RSWDT driver.

    * Atmel SAMV7 Boards:

      - SAMV71-XULT:  Add configuration for testing OS modules.

    * Freescale Kinetis:

      - MK60N512VLL100: Add support for the MK60N512VLL100 Kinetis part.
        From Andrew Webster.

    * Freescale Kinetis Boards:

      - ENET:  Numerous updates to the Kinetis ENET driver. That driver is
        now functional. From Andrew Webster.

    * NXP LPC43xx Boards:

      - WaveShare LPC4337-WS:  Support for the WaveShare LPC4337-WS board.
        From Lok Tep.

    * STMicro STM32 Drivers:

      - Timer Capture:  Add timer input capture driver.  From Pierre-Noel
        Bouteville.

    * STMicro STM32 Boards:

      - Olimex STM32 H407:  Added a port to the Olimex STM32 H407 board.
        This board features the STMicro STM32F407ZGT6 (144 pins).
        Contributed by Neil Hancock.

    * TI TMS550 Boards:

      - TI LaunchXL-TMS57004:  Add basic board support for TI LaunchXL-
        TMS57004.  Still a work in progress.

    * C Library/Header Files:

      - sys/time.h: Add timeradd(), timersub(), timerclear(), timerisset(),
        and timercmp() as macros. These are non-POSIX interfaces, but
        included in most BSD deriviatives, including Linux.  From Manuel St??.
      - AVR support: Introduce support for Atmel toolchain in-flash strings.
        Atmel toolchain AVR compiler provides a transparent in-flash object
        support using __flash and __memx symbols. The former indicates to
        compiler that this is a flash-based object.  The later used with
        pointer indicates that the referenced object may reside either in
        flash or in RAM. The compiler automatically makes 32-bit pointer
        with flag indicating whether referenced object is in flash or RAM
        and generates code to access either in run-time. Thus, any function 
        hat accepts __memx object can transparently work with RAM and flash
        objects.
        For platforms with a Harvard architecture and a very small RAM like
        AVR this allows to move all constant strings used in trace messages
        to flash in the instruction address space, releasing resources for
        other things. This change introduces IOBJ and IPTR type qualifiers.
        The 'I' indicates that the object may lie in instruction space on a
        Harvard architecture machine. For platforms that do not have __flash
        and __memx or similar symbols IOBJ and IPTR are empty, making the
        types equivalent to, for example, 'const char' and 'const char*'.
        For Atmel compiler these will become 'const __flash char' and
        'const __memx char*'.  All printf() functions and syslog() functions
        are changed so that the qualifier is used with the format parameter.
        From Dimitry Kloper.
      - debug.h:  Add configuration to support an architecture-specific
        debug.h header file. From Dimitri Kloper.
      - netdb:  Add support for the use of a DNS resolver file like
        /etc/resolv.conf.
      - TEA:  Add an implementation of the Tiny Encryption Algorithm.
      - math32.h:  Add some utilities to support 64-bit arithmetic
        operations for platforms that do not support long long types.

    * Tools:

      - tools/cnvwindeps.c:  Add a tool that will convert paths in
        dependencies generated by a Windows compiler so that they can be
        used with the Cygwin make.
      - tools/mkwindeps.sh: A script that coordinates use of cnvwindeps.exe.
        Dependencies now work on the Cygwin platform when using a Windows 
        ative toolchain.

    * Applications: NSH

      - Module Commands:  Add module commands: insmod, rmmod, and lsmod.
      - Time Command:  Add a 'time' command that may be used to time the
        execution of other commands.
      - Password Commands:  Add useradd, userdel, and passwd commands.
      - MOTD:  Now supports a Message of the Day (MOTD) that will be
        presented after the NSH greeting.
      - Session Logins:  All sessions may be protected with logins using the
        encrypted password in /etc/passwd.
      - Extended Logins.  Added optional platform-specific function to
        perform password verification and optional delay after each failed
        login attempt.

    * Applications: apps/fsutils:

      - apps/fsutils/passwd: Utility library for accessing a password file
        like /etc/passwd.

    * Applications: apps/netutils:

      - apps/netutils/telnetd:  Now creates Telnet sessions by opening a new
        factory device at /dev/telnet and then using ioctl calls to create
        the session character drivers at /dev/telnetN.
      - apps/netutils/netlib:  Add netlib_get_dripv4addr() and
        netlib_get_ipv4netmask().  From Pelle Windestam.

    * Applications: apps/examples:

      - apps/examples/module:  Add a test harness for verifying NuttX kernel
        modules.
      - apps/examples/pca9635:  Add a simple test of PCA9635PW PWM LED driver.
        From Alan Carvalho de Assis.
      - apps/examples/ostest:  Add a test of POSIX timers using SIGEV_THREAD.

Bugfixes.  Only the most critical bugfixes are listed here (see the
ChangeLog for the complete list of bugfixes and for additional, more
detailed bugfix information):

    * Core OS:

      - pthreads: CRITICAL BUGFIX: Logic was wiping out the indication that
        of the type of a pthread.  Hence, it could be confused as a task.
      - waitpid:  CRITICAL BUGFIX.  Add a reference count to prevent waitpid
        from using stale memory released by the waited-for task group.
      - clock_systimespec():  Fix an error in a time conversion.

    * File System/Block Drivers:

      - poll(): Fix handling of sem_tickwait() return value sem_tickwait()
        does not return an -1+errno, it returns a negated errno value.
        Noted by Freddie Chopin.

    * Common Drivers:

      - TUN Driver:  Fix a compile time error in the TUN driver.  From
        Vladimir Komendantskiy.
      - USB Host HID Parser:  Wrong size used in memcpy().  From Hang Xu.
      - PCA9555: Fixed a bug in the function pca9555_setbit which occurs if
        someone tries to set one of the pins 8-15. The problem is that
        after the check if the pin is greater than 7 the variable addr is
        incremented and used in the Call I2C_WRITEREAD. But later in the
        call to the I2C_WRITE buf[0] is used as address but this address is
        not incremented as it should be. Note address does mean the address
        to the register in the ioexpander and not the I2C address.  From
        Stefan Kolb.

    * Networking:

      - TCP/IOB:  Numerous fixes, mostly relate to TCP and IOB buffering
        and race conditions.  These were necessary for for the NuttX
        networking later to be stable in some stress testing.  From Andrew
        Webster.

    * Atmel SAMV7 Drivers:

      - USBHS Device: In USBHS device driver, fix check if zero length
        packet is needed.

    * STMicro STM32 Drivers:

      - OTG FS Host:  Fix some backward arguments to stm32_putreg().  Note
        by Hang Xu.

    * Tools:

      - tools/mkdeps.c:  Extended/fixed support for --winpath option.
        Dependencies now work under Cygwin with a native Windows toolchain.

    * Build System:

      - apps/platform/Makefile:  Use a relative path to the board directory
        link rather than the absolute path.  For Cygwin, the absolute would
        would need converted with cygpath.  But just using the relative path
        is a simpler solution.