Documentation/ReleaseNotes/NuttX-7.4 - nuttx - Git at Google

 NuttX-7.4
 ---------

 The 104th release of NuttX, Version 7.4, was made on August 15, 2014,
 and is available for download from the SourceForge website. Note
 that release consists of two tarballs: nuttx-7.4.tar.gz and
 apps-7.4.tar.gz. Both may be needed (see the top-level nuttx/README.txt
 file for build information).

 Additional new features and extended functionality:

 * Core OS:

 - Beginnings of a crypto/ subsystem from Max Neklyudov
 - Tickless operation: NuttX now supports a mode with no periodic
 timer interrupts. Rather, timed events are handle via an interval
 timer. This (1) lowers the rate of interrupt processing to timer
 events, (2) gives much high timing resolution, and (3) allows lower
 power modes of operation where the CPU is not constantly being
 interrupted by the timer.
 - Restructured the OS files under sched/ to better support the already
 modular nature of the RTOS.

 * Networking

 - Substantial directory and header file reorganization and renaming to
 make the NuttX networking implementation more modular.
 - Add network device ioctl to access PHY registers. From Daniel Lazlo
 Sitzer

 * Binary Loader:

 - Various changes associated with symbol tables from Pelle Windestam.

 * Graphics:

 - colorcmp(): New utility to compare two colors.
 - The initial background color is now configurable. Includes logic to
 eliminates multiple background updates to get the right color.
 - Minor configuration changes to handle mouse X/Y and touchscreen
 X/Y differently.

 * File System/Block Drivers:

 - SmartFS: Increase some variables from uint16_t to uint32_t to handle
 larger device sizes. From Ken Pettit.
 - Add configurable AES encryption support to the block-to-character
 (BCH) driver. This allows any block device to be accessed as an
 encrypted character device. From Max Nekludov
 - Add an MTD layer that will add read-ahead or write buffering to any
 MTD driver (incomplete).
 - Automounter: Add support for an auto-mounter that will automatically
 mount and unmount a file system a media is inserted and removed

 * Audio/Audio Drivers

 - WM8904 audio CODEC driver.
 - PCM .WAV file decoder. Fast forward implemented with sub-sampling
 (currently no rewind support).
 - Add a NULL audio device that can be used to simply unit-level testing
 of audio decoders.
 - Audio subsystem now supports interfaces for fast-forward and rewind
 needed by CMediaPlayer; add hooks for equalizer settings needed by
 the WM8904 CODEC.

 * Other Common Drivers:

 - MTD: Extend erase block size to 18-bits in order (decrease block
 size to 14-bits) to handle parts with large erase blocks. From Kosma
 Moczek
 - maxTouch: Add support for the Atmel maXTouch touchscreen controller.

 * Host Simulation:

 - Provides the timers needed to support the Tickless mode of operation.

 * Atmel SAM4C:

 - Add SAM4CM IPC register header file. From Max Neklyudov
 - Various fixes PMC and clock configuration for the SAM4CM port from
 Max Neklyudov

 * Atmel SAM4E/4S Drivers:

 - SAM4 AES driver. Contributed by Max Neklyudov

 * Atmel SAMA5:

 - Add logic to redirect all SAMA5D4 interrupts to the AIC
 - Add a configuration option to reserve DRAM for a framebuffer when
 executing out of DRAM. This optional was available before when
 executing out of NOR, but needs to work a little differently in
 this case.
 - Add SAMA5 slow (32.768KHz) clock support.
 - Add support for the ARM L2CC-PL310 L2 cache. The system runs with
 L2CC cache enabled but there is some issues still with the LCD DMA;
 I suspect that the memory timing configuration for L2CC needs to
 be tuned.
 - Provides the timers needed to support the Tickless mode of operation.

 * Atmel SAMA5 Drivers:

 - XDMAC-based HSCMI driver for the SAMA5D4
 - Adapt the SAMA5D3 LCDC driver to work with the SAMA5D4 which has
 no hardware cursor.
 - PIO: Add a new interface sam_pio_forceclk() that can be used to
 force PIO clocking on. I am afraid I was too conservative with
 PIO clocking in the initial design; this is the price.
 - TWI: Now supports the up_i2creset() method.
 - TWI: Use sam_pio_forceclk() so that we can read the current state
 of an open-drain output in the TWI reset logic.
 - SSC: SCC Frame Synch Delay and Start Delay are now configurable.
 - PCK: Add the slow clock and the main clocks as options for the
 PCK configuration.
 - Timer/Counter: Can now handle non-constant BOARD_MCK_FREQUENCY. Also
 now supports methods to attach client interrupt handlers
 - One shot and free-running timers. These are wrappers around the low
 level timer/counter logic to provide one-shot and free-running
 timers. These were developed to support the Tickless operation, but
 can be used for any purpose.

 * Atmel SAMA5 Board Support:

 - Add a boot loader that runs from ISRAM and loads an Intel HEX file
 into DRAM.
 - Add a configuration that will load a bootloader into AT25 Serial
 FLASH
 - SAMA5D4-EK NSH configuration supports many more features: RTC, HSCMI
 card detection, maXTouch touchscreen, TM7000 LCD, the command line
 media player (currently using the NULL audio device), automounter,
 and others.
 - SAMA5D4-EK: Add an NxWM configuration using the TM7000 LCD with
 the maXTouch multi-touch touchscreen.
 - SAMA5D4-EK NxWM: Uses new, larger icons in configuration instead of
 scaling.
 - SAMA5D4-EK NxWM: The NxPlayer and audio system are now enabled in
 the default configuration (but currently using the NULL audio
 device). The automounter is used to automatically mount media
 on an SD card.
 - SAMA5D3x-EK: Add a configuration to support the command line
 NxPlayer and to verify the WM8904 CODEC driver.

 * STMicro STM32:

 - Add support for the STM32F103RC and RD. From Kosma Moczek
 - Add a procfs entry to show the state of the CCM heap usage.
 From Pelle Winderstam

 * STMicro STM32 Drivers:

 - Unconfigure GPIO pins when closing a serial port to prevent back
 effects from back-powering on the TX pin. From Kosma Moczek

 * NXP LPC17xx Drivers:

 - ADC: Added burstmode ADC conversion mode, with CONFIG_ADC_BURSTMODE
 option in Kconfig. From Max
 - Ethernet: Added option to use the kernel worker thread to do most of
 the workload with CONFIG_NET_WORKER_THREAD option in Kconfig. From Max
 - Ethernet: Critical bugfix: From time to time (after some hours) the
 Ethernet receiver would lose one receive interrupt and the IP stack
 never recover because there is no receive watchdog as the transmit
 watchdog. From Max

 * NXP LPC17xx Boards:

 - mbed: Port ADC, DAC, and PWM logic from the configs/zkit-arm-1769.
 From Max
 - mbed: Eliminated a problem with PHY DP83848C : it doesn't need a
 specific initialization on mbed. From Max

 * Library:

 - Adds support for localtime. From Max Neklyudov

 * Configuration/Build System:

 - Make variable definitions 'static const' when possible to save RAM
 usage. From Kosma Moczek

 * Applications:

 - system/mdio: New PHY tool from Daniel Lazlo Sizter.
 - NSH: Networking logic modified to handler the case of SLIP
 transport. From Max Neklyudov.
 - NSH: Add a configuration to use a USB keyboard for the stdin
 device.
 - NSH: Software assigned MAC address is now configurable. From Lazlo.
 - NSH: Also add an option to let platform-specific logic select the
 MAC address.
 - NSH: There is now a configuration option that will bring up the
 network on an separate thread. Since the network bring-up is
 asynchronous, there are no serial console start-up delays due
 to the network negotiation time.
 - NxPlayer: Changes to integrate with Ken's NxWM::CMediaPlayer.
 - NxPlayer: Add interfaces for fast-forward and rewind needed by
 CMediaPlayer; add interface for equalizer settings needed by the
 WM8904.
 - NxPlayer: Supports new way of identifying the end of the audio
 stream (see the Audio section above).
 - Sudoku: Add a sudoku game.

 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):

 * Graphics:

 - NxConsole: Fix scrolling for the case of the framebuffer device. In
 this case, the logic for clearing the vacated region at the bottom
 was missing so garbage would scroll up from the last, uncleared
 line.

 * Networking:

 - Important fix to the read-ahead buffer queue management: Consumed
 bytes were being trimmed from the head of the queue, but the queue
 head itself was not being updated. From Rony XLN.
 - Fix an error in SLIP escaping. From Max Neklyudov

 * Network Utilities:

 - Fix an include file ordering problem when CONFIG_NET_STATISTICS=y.
 - Move statistics from uip.h to new netstats.h to remove a circular
 inclusion problem
 - Various fixes for networking and tiny webserver from Max
 - webclient: Fix to offset calculation from Rony Xln. Prevents 0x0a
 at the beginning of lines.
 - webserver: Fix some configuration usage issues. From Max.
 - webserver: Missing logic to close sockets on loop termination.

 * File System / Block Drivers:

 - SmartFS: Fix for a bug that would show up if CONFIG_MTD_BYTE_WRITE
 was not selected and the SMART sector size was larger than the MTD
 device's block size (like it would be if using SMARTFS on larger
 flash devices). From Ken Pettit.

 * Audio:

 - Change how the end of the audio stream is detected by the leaf audio
 component. This used to be done by looking for the first partial
 buffer. That does not work with the in-place sub-sampling performed
 by the PCM decoder: That always reduces the size of the buffer so
 that all buffers only partially filled by the time they get to the
 leaf. Now, a flag is set in the audio buffer flags set to indicate
 the final buffer in the stream.

 * Common Drivers:

 - RAMLOG putc() method needs to set the errno and return EOF on a
 failure.
 - Add missing configuration option to select the MAX11802 touchscreen
 controller. From Petteri Aimonen

 * Atmel SAMA5D3/4:

 - Fix logic in conversion of physical and virtual DRAM addresses when
 running out of DRAM. This is an important bug fix for the SAMA5D3
 and 4 when running out of DRAM .
 - Critical SAMA5D3 and 4 bug fix: PIO clocking must be enabled for
 all input pins or else the value that is read never changes.

 * Atmel SAMA5D3/4 Drivers:

 - OHCI: Fix an error in a DEBUGASSERT statement. Caused an
 assertion to fire inappropriately when a low- or full-speed device
 was removed and CONFIG_DEBUG=y
 - OHCI: Pointers to allocated port values were not being
 nullified after being deallocated. This caused some assertions
 to fire when debug was enabled
 - SSC: Needs to account for data offset in audio buffer

 * ARMv7-M:

 - Correct the initial value of the BASEPRI register. This was
 apparently never being initialized! From Max

 * STMicro STM32 Drivers:

 - I2C: Fix missing configuration of GPIO pins in I2C driver. Fix
 from Alex D.
 - STM32 OTGFS device: Various changes to try to reduce that amount of
 time in interrupts handles and with interrupts disabled. From
 Petteri Aimonen

 * Atmel SAM3/4 Drivers:

 - Ethernet: Wrong bits being cleared before OR-ing in new settings.
 - Ethernet: Fix an error in the function that determines the number
 of free TX descriptors. This is an important bugfix on busy
 networks.
 - I2C: Test for read or write operation was reversed. How could
 this have worked before?

 * Atmel SAM3/4 Boards:

 - SAM4S Xplained-Pro: Correct description of LEDs and usage. From
 Kosma Moczek

 * Atmel SAMA5:

 - PIO: Fix definitions that could disable PIO interrupt support if only
 PIOE interrupts were enabled
 - PIO: Macro SAM_PION_VBASE is not define-able for the SAMA5D4 and must
 be replaced with a table lookup.
 - PIO: Fix a typo in Schmitt trigger configuration; Configure pin as a
 vanilla input first so that final pin configuration is more read-able
 (i.e., easier to debug)
 - PIO: Logic for Schmitt trigger selection backward
 - SAMA5D4: Correct system timer frequency. Input clock is MCK/2, not MCK.

 * Atmel SAMA5 Drivers:

 - Ethernet: Wrong bits being cleared before OR-ing in new settings.
 - Ethernet: Fix an error in the function that determines the number
 of free TX descriptors. This is an important bugfix on busy
 networks.
 - HSMCI: The 8-byte SCR transfer was failing silently with the DMA
 transfer, leaving the SD card in single bit mode. Fixed by adding
 a non-DMA read transfer mode.
 - HSMCI: Fix a problem on card insertion/removal callback handling.
 Interrupts were being disable so that the callbacks occurred with
 interrupts disabled. This resulted in loss of some interrupts and
 some not-so-good behaviors. The solution is to perform all
 callbacks on the work thread unconditionally

 * Atmel SAMA5 Boards:

 - PIO: Fix some cloned errors in SAM GPIO interrupt setup

 * NXP LPC17xx Drivers:

 - Ethernet: Comment out an assertion that is reported to fire
 inappropriately. From Max

 * Library:

 - stdint.h: Correct naming of [U]INT_LEASTn_{MAX|MIN} and
 [U]INT_FASTn{MAX|MIN}. From Kosma Moczek
 - unistd.h: POSIX definitions should be defined to a value. rom Kosma
 Moczek
 - Fixes associated with rint() and related interfaces in the math
 library.

 * Configuration/Build System:

 - NAME_MAX not available on SunOS; use FILENAME_MAX or MAXNAMELEN.
 Noted by Douglas Beattie

 * Applications:

 - NSH: if # appears on line, need to comment ignore additional
 commands on the line
 - NxPlayer: Check for file read errors and end-of-file with zero
 bytes read. Other error handling corrected as well.
 - NxPlayer: NxPlayer needs to set curbyte field to zero before
 enqueuing a buffer. Otherwise, it looks like beginning of the
 buffer has already been consumed.
	NuttX-7.4
	---------

	The 104th release of NuttX, Version 7.4, was made on August 15, 2014,
	and is available for download from the SourceForge website. Note
	that release consists of two tarballs: nuttx-7.4.tar.gz and
	apps-7.4.tar.gz. Both may be needed (see the top-level nuttx/README.txt
	file for build information).

	Additional new features and extended functionality:

	* Core OS:

	- Beginnings of a crypto/ subsystem from Max Neklyudov
	- Tickless operation: NuttX now supports a mode with no periodic
	timer interrupts. Rather, timed events are handle via an interval
	timer. This (1) lowers the rate of interrupt processing to timer
	events, (2) gives much high timing resolution, and (3) allows lower
	power modes of operation where the CPU is not constantly being
	interrupted by the timer.
	- Restructured the OS files under sched/ to better support the already
	modular nature of the RTOS.

	* Networking

	- Substantial directory and header file reorganization and renaming to
	make the NuttX networking implementation more modular.
	- Add network device ioctl to access PHY registers. From Daniel Lazlo
	Sitzer

	* Binary Loader:

	- Various changes associated with symbol tables from Pelle Windestam.

	* Graphics:

	- colorcmp(): New utility to compare two colors.
	- The initial background color is now configurable. Includes logic to
	eliminates multiple background updates to get the right color.
	- Minor configuration changes to handle mouse X/Y and touchscreen
	X/Y differently.

	* File System/Block Drivers:

	- SmartFS: Increase some variables from uint16_t to uint32_t to handle
	larger device sizes. From Ken Pettit.
	- Add configurable AES encryption support to the block-to-character
	(BCH) driver. This allows any block device to be accessed as an
	encrypted character device. From Max Nekludov
	- Add an MTD layer that will add read-ahead or write buffering to any
	MTD driver (incomplete).
	- Automounter: Add support for an auto-mounter that will automatically
	mount and unmount a file system a media is inserted and removed

	* Audio/Audio Drivers

	- WM8904 audio CODEC driver.
	- PCM .WAV file decoder. Fast forward implemented with sub-sampling
	(currently no rewind support).
	- Add a NULL audio device that can be used to simply unit-level testing
	of audio decoders.
	- Audio subsystem now supports interfaces for fast-forward and rewind
	needed by CMediaPlayer; add hooks for equalizer settings needed by
	the WM8904 CODEC.

	* Other Common Drivers:

	- MTD: Extend erase block size to 18-bits in order (decrease block
	size to 14-bits) to handle parts with large erase blocks. From Kosma
	Moczek
	- maxTouch: Add support for the Atmel maXTouch touchscreen controller.

	* Host Simulation:

	- Provides the timers needed to support the Tickless mode of operation.

	* Atmel SAM4C:

	- Add SAM4CM IPC register header file. From Max Neklyudov
	- Various fixes PMC and clock configuration for the SAM4CM port from
	Max Neklyudov

	* Atmel SAM4E/4S Drivers:

	- SAM4 AES driver. Contributed by Max Neklyudov

	* Atmel SAMA5:

	- Add logic to redirect all SAMA5D4 interrupts to the AIC
	- Add a configuration option to reserve DRAM for a framebuffer when
	executing out of DRAM. This optional was available before when
	executing out of NOR, but needs to work a little differently in
	this case.
	- Add SAMA5 slow (32.768KHz) clock support.
	- Add support for the ARM L2CC-PL310 L2 cache. The system runs with
	L2CC cache enabled but there is some issues still with the LCD DMA;
	I suspect that the memory timing configuration for L2CC needs to
	be tuned.
	- Provides the timers needed to support the Tickless mode of operation.

	* Atmel SAMA5 Drivers:

	- XDMAC-based HSCMI driver for the SAMA5D4
	- Adapt the SAMA5D3 LCDC driver to work with the SAMA5D4 which has
	no hardware cursor.
	- PIO: Add a new interface sam_pio_forceclk() that can be used to
	force PIO clocking on. I am afraid I was too conservative with
	PIO clocking in the initial design; this is the price.
	- TWI: Now supports the up_i2creset() method.
	- TWI: Use sam_pio_forceclk() so that we can read the current state
	of an open-drain output in the TWI reset logic.
	- SSC: SCC Frame Synch Delay and Start Delay are now configurable.
	- PCK: Add the slow clock and the main clocks as options for the
	PCK configuration.
	- Timer/Counter: Can now handle non-constant BOARD_MCK_FREQUENCY. Also
	now supports methods to attach client interrupt handlers
	- One shot and free-running timers. These are wrappers around the low
	level timer/counter logic to provide one-shot and free-running
	timers. These were developed to support the Tickless operation, but
	can be used for any purpose.

	* Atmel SAMA5 Board Support:

	- Add a boot loader that runs from ISRAM and loads an Intel HEX file
	into DRAM.
	- Add a configuration that will load a bootloader into AT25 Serial
	FLASH
	- SAMA5D4-EK NSH configuration supports many more features: RTC, HSCMI
	card detection, maXTouch touchscreen, TM7000 LCD, the command line
	media player (currently using the NULL audio device), automounter,
	and others.
	- SAMA5D4-EK: Add an NxWM configuration using the TM7000 LCD with
	the maXTouch multi-touch touchscreen.
	- SAMA5D4-EK NxWM: Uses new, larger icons in configuration instead of
	scaling.
	- SAMA5D4-EK NxWM: The NxPlayer and audio system are now enabled in
	the default configuration (but currently using the NULL audio
	device). The automounter is used to automatically mount media
	on an SD card.
	- SAMA5D3x-EK: Add a configuration to support the command line
	NxPlayer and to verify the WM8904 CODEC driver.

	* STMicro STM32:

	- Add support for the STM32F103RC and RD. From Kosma Moczek
	- Add a procfs entry to show the state of the CCM heap usage.
	From Pelle Winderstam

	* STMicro STM32 Drivers:

	- Unconfigure GPIO pins when closing a serial port to prevent back
	effects from back-powering on the TX pin. From Kosma Moczek

	* NXP LPC17xx Drivers:

	- ADC: Added burstmode ADC conversion mode, with CONFIG_ADC_BURSTMODE
	option in Kconfig. From Max
	- Ethernet: Added option to use the kernel worker thread to do most of
	the workload with CONFIG_NET_WORKER_THREAD option in Kconfig. From Max
	- Ethernet: Critical bugfix: From time to time (after some hours) the
	Ethernet receiver would lose one receive interrupt and the IP stack
	never recover because there is no receive watchdog as the transmit
	watchdog. From Max

	* NXP LPC17xx Boards:

	- mbed: Port ADC, DAC, and PWM logic from the configs/zkit-arm-1769.
	From Max
	- mbed: Eliminated a problem with PHY DP83848C : it doesn't need a
	specific initialization on mbed. From Max

	* Library:

	- Adds support for localtime. From Max Neklyudov

	* Configuration/Build System:

	- Make variable definitions 'static const' when possible to save RAM
	usage. From Kosma Moczek

	* Applications:

	- system/mdio: New PHY tool from Daniel Lazlo Sizter.
	- NSH: Networking logic modified to handler the case of SLIP
	transport. From Max Neklyudov.
	- NSH: Add a configuration to use a USB keyboard for the stdin
	device.
	- NSH: Software assigned MAC address is now configurable. From Lazlo.
	- NSH: Also add an option to let platform-specific logic select the
	MAC address.
	- NSH: There is now a configuration option that will bring up the
	network on an separate thread. Since the network bring-up is
	asynchronous, there are no serial console start-up delays due
	to the network negotiation time.
	- NxPlayer: Changes to integrate with Ken's NxWM::CMediaPlayer.
	- NxPlayer: Add interfaces for fast-forward and rewind needed by
	CMediaPlayer; add interface for equalizer settings needed by the
	WM8904.
	- NxPlayer: Supports new way of identifying the end of the audio
	stream (see the Audio section above).
	- Sudoku: Add a sudoku game.

	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):

	* Graphics:

	- NxConsole: Fix scrolling for the case of the framebuffer device. In
	this case, the logic for clearing the vacated region at the bottom
	was missing so garbage would scroll up from the last, uncleared
	line.

	* Networking:

	- Important fix to the read-ahead buffer queue management: Consumed
	bytes were being trimmed from the head of the queue, but the queue
	head itself was not being updated. From Rony XLN.
	- Fix an error in SLIP escaping. From Max Neklyudov

	* Network Utilities:

	- Fix an include file ordering problem when CONFIG_NET_STATISTICS=y.
	- Move statistics from uip.h to new netstats.h to remove a circular
	inclusion problem
	- Various fixes for networking and tiny webserver from Max
	- webclient: Fix to offset calculation from Rony Xln. Prevents 0x0a
	at the beginning of lines.
	- webserver: Fix some configuration usage issues. From Max.
	- webserver: Missing logic to close sockets on loop termination.

	* File System / Block Drivers:

	- SmartFS: Fix for a bug that would show up if CONFIG_MTD_BYTE_WRITE
	was not selected and the SMART sector size was larger than the MTD
	device's block size (like it would be if using SMARTFS on larger
	flash devices). From Ken Pettit.

	* Audio:

	- Change how the end of the audio stream is detected by the leaf audio
	component. This used to be done by looking for the first partial
	buffer. That does not work with the in-place sub-sampling performed
	by the PCM decoder: That always reduces the size of the buffer so
	that all buffers only partially filled by the time they get to the
	leaf. Now, a flag is set in the audio buffer flags set to indicate
	the final buffer in the stream.

	* Common Drivers:

	- RAMLOG putc() method needs to set the errno and return EOF on a
	failure.
	- Add missing configuration option to select the MAX11802 touchscreen
	controller. From Petteri Aimonen

	* Atmel SAMA5D3/4:

	- Fix logic in conversion of physical and virtual DRAM addresses when
	running out of DRAM. This is an important bug fix for the SAMA5D3
	and 4 when running out of DRAM .
	- Critical SAMA5D3 and 4 bug fix: PIO clocking must be enabled for
	all input pins or else the value that is read never changes.

	* Atmel SAMA5D3/4 Drivers:

	- OHCI: Fix an error in a DEBUGASSERT statement. Caused an
	assertion to fire inappropriately when a low- or full-speed device
	was removed and CONFIG_DEBUG=y
	- OHCI: Pointers to allocated port values were not being
	nullified after being deallocated. This caused some assertions
	to fire when debug was enabled
	- SSC: Needs to account for data offset in audio buffer

	* ARMv7-M:

	- Correct the initial value of the BASEPRI register. This was
	apparently never being initialized! From Max

	* STMicro STM32 Drivers:

	- I2C: Fix missing configuration of GPIO pins in I2C driver. Fix
	from Alex D.
	- STM32 OTGFS device: Various changes to try to reduce that amount of
	time in interrupts handles and with interrupts disabled. From
	Petteri Aimonen

	* Atmel SAM3/4 Drivers:

	- Ethernet: Wrong bits being cleared before OR-ing in new settings.
	- Ethernet: Fix an error in the function that determines the number
	of free TX descriptors. This is an important bugfix on busy
	networks.
	- I2C: Test for read or write operation was reversed. How could
	this have worked before?

	* Atmel SAM3/4 Boards:

	- SAM4S Xplained-Pro: Correct description of LEDs and usage. From
	Kosma Moczek

	* Atmel SAMA5:

	- PIO: Fix definitions that could disable PIO interrupt support if only
	PIOE interrupts were enabled
	- PIO: Macro SAM_PION_VBASE is not define-able for the SAMA5D4 and must
	be replaced with a table lookup.
	- PIO: Fix a typo in Schmitt trigger configuration; Configure pin as a
	vanilla input first so that final pin configuration is more read-able
	(i.e., easier to debug)
	- PIO: Logic for Schmitt trigger selection backward
	- SAMA5D4: Correct system timer frequency. Input clock is MCK/2, not MCK.

	* Atmel SAMA5 Drivers:

	- Ethernet: Wrong bits being cleared before OR-ing in new settings.
	- Ethernet: Fix an error in the function that determines the number
	of free TX descriptors. This is an important bugfix on busy
	networks.
	- HSMCI: The 8-byte SCR transfer was failing silently with the DMA
	transfer, leaving the SD card in single bit mode. Fixed by adding
	a non-DMA read transfer mode.
	- HSMCI: Fix a problem on card insertion/removal callback handling.
	Interrupts were being disable so that the callbacks occurred with
	interrupts disabled. This resulted in loss of some interrupts and
	some not-so-good behaviors. The solution is to perform all
	callbacks on the work thread unconditionally

	* Atmel SAMA5 Boards:

	- PIO: Fix some cloned errors in SAM GPIO interrupt setup

	* NXP LPC17xx Drivers:

	- Ethernet: Comment out an assertion that is reported to fire
	inappropriately. From Max

	* Library:

	- stdint.h: Correct naming of [U]INT_LEASTn_{MAX\|MIN} and
	[U]INT_FASTn{MAX\|MIN}. From Kosma Moczek
	- unistd.h: POSIX definitions should be defined to a value. rom Kosma
	Moczek
	- Fixes associated with rint() and related interfaces in the math
	library.

	* Configuration/Build System:

	- NAME_MAX not available on SunOS; use FILENAME_MAX or MAXNAMELEN.
	Noted by Douglas Beattie

	* Applications:

	- NSH: if # appears on line, need to comment ignore additional
	commands on the line
	- NxPlayer: Check for file read errors and end-of-file with zero
	bytes read. Other error handling corrected as well.
	- NxPlayer: NxPlayer needs to set curbyte field to zero before
	enqueuing a buffer. Otherwise, it looks like beginning of the
	buffer has already been consumed.