NuttX is a real-time operating system. It strives to be lean, POSIX-compliant
and portable. It runs on ARM, Atmel AVR, x86, MIPS, Hitachi and Zilog CPUs.
It's modular, very configurable, scalable, is pre-emptive, provides core task management,
FIFO and round-robin scheduling, realtime support, priority inheritance,
tickless operation, POSIX/ANSI and VxWorks task controls, has message
queues, semaphores, timers, signals, pthreads, environment variables,
virtual filesystem support, BSD sockets, MMU usage and paging. It supports
FAT16/32, NFS, NXFFS, ROMFS, procfs, SD/MMC cards, syslogging, ELF and
NXFLAT executables, TFTP and FTP or HTTP file transfers, USB devices, I2C,
I2S, framebuffer graphics, uClibc++, and TCP/IP and various other network
7.727 Jan 2015 12:25
Add logic to clean up after task_delete() or pthread_cancel().
Stack coloration: Replaced CONFIG_DEBUG_STACK with CONFIG_STACK_COLORATION.
New joystick and generic serial driver.
Add procfs write support.
Implemented wear-leveling in the SmartFS.
Many new fonts converted for use with NuttX.
IPv4 support is now conditioned on CONFIG_NET_IPv4.
Many new hardware/plattform features or changes added.
Added support for a variadic ioctl() function.
Add CRC8 support to the C library.
Added support for the expm1 functions.
Basic IPv6 support was completed.
Much of the work in this release is focused on the realization of
Unix-style user processes in NuttX.
7.514 Oct 2014 08:45
Watchdog Timer Allocation, Address Environment Support, System Startup from
filesystem, initial board initialization on a separate worker thread, Add
a simple physical page allocator based on the existing NuttX granule
allocator. Add implementation and documentation for shmget, shmctl. Add
support for a per-process virtual page allocator. SMART FS procfs updates.
Change all occurrences of NxConsole to NxTerm. Standardize a PHY interrupt
attachment interface. The default host is now x86_64 and the -m32 option
will be automatically selected for simulation builds. Re-implemented poll()
delay using sem_timedwait(). Extend the NSH network initialization logic.
Many bugfixes were also applied.