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:
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 Stð¨®. - 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 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.