µOS++ IIIe v6.3.13 released µOS++ IIIe v6.3.15 released

µOS++ IIIe v6.3.14 released

Version v6.3.14 is a µOS++ IIIe maintenance release. The main addition is the functional POSIX I/O subsystem, which supports character devices, block devices and file systems.

Affected packages

Download or update

As of now, the µOS++ code is split between several GitHub projects and needs to be brought together to compose a project. To automate this process, some scripts are available from a separate project.

To update the local copy of the xPacks, use the scripts.git/xpacks-update-repo.sh script.

To experiment with µOS++, please check the demo projects, available from GitHub, and use a similar structure for your projects.

New features

  • add support for Chan FatFS to the POSIX I/O layer; for some examples how to use it, please see the test/rtos/src/test-chan-fatfs.cpp file
  • add file_descriptors_manager::used() to tell how many file descriptors are used
  • [#41] add non-standard timegm(), as the opposite of gmtime()
  • implement alignment in memory allocators
  • [#40] posix: add statvfs()/fstatvfs()
  • [#36] posix: add tcdrain()/tcflush()/tcgetattr()/tcsendbreak()/ tcgetattr() to POSIX aliases
  • [#29] add thread top try/catch for exceptions; support for C++ exceptions was tested and is now available
  • [#20] add sys/ioctl.h

Addressed bugs

  • [#44] os_main.cpp: add cast for os_main_thread
  • [#35] add missing _fini()
  • [#17] fix _LITE_EXIT redefinition
  • rtos/thread: unlock dangling mutexes

Other changes

  • file_descriptors_manager::alloc() was renamed file_descriptors_manager::allocate() and file_descriptors_manager::free() was renamed file_descriptors_manager::deallocate(), to be more in line with modern allocators
  • the standard thread classes were reorganised to be visible both in std:: and estd:: namespaces

Known problems

  • the header files are still located below a cmsis-plus folder; to be replaced by micro-os-plus in a future major release.
  • the file_descriptors_manager class is not yet synchronised

Future developments

This will hopefully be the final release of µOS++ in the current monolithic structure. Future versions will use a modular structure, based on xPacks.