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RIOT Documentation

RIOT-2017.04 - Release Notes

View on GitHub The changelog can also be found on GitHub.

RIOT is a multi-threading operating system which enables soft real-time capabilities and comes with support for a range of devices that are typically found in the Internet of Things: 8-bit microcontrollers, 16-bit microcontrollers and light-weight 32-bit processors.

RIOT is based on the following design principles: energy-efficiency, soft real-time capabilities, small memory footprint, modularity, and uniform API access, independent of the underlying hardware (with partial POSIX compliance).

RIOT is developed by an international open-source community which is independent of specific vendors (e.g. similarly to the Linux community) and is licensed with a non-viral copyleft license (LGPLv2.1), which allows indirect business models around the free open-source software platform provided by RIOT.

About this release:

This release provides a lot of new features, fixes and enhancements. Among these has been a huge cleanup regarding cppcheck and documentation, and we’re pleased to announce that all remaining doxygen and cppcheck warnings have been fixed. We’re also proud to present a Virtual File System layer and integration of the SPIFFS file system. A lot of work has gone into support for STMicroelectronics’s Nucleo family, with RIOT now supporting 28 (up from 13) Nucleo boards. And as always, there was a lot of under-the-hood cleanup, bug fixing and documentation work.

About 200 pull requests with about 562 commits have been merged since the last release and about 23 issues have been solved. 32 people contributed with code in 91 days. 2697 files have been touched with 716950 insertions and 492623 deletions.

Notations used below:

  • means new feature/item
  • means modified feature/item
  • means removed feature/item

New features and changes

Core

  • full C11 atomics support
  • rmutex, a recursive mutex implementation

API changes

  • renamed NTOH*() -> ntoh*(), HTON*() -> hton*()
  • removed gpioint API, which was unused and obsoleted by periph/gpio
  • renamed uuid module to luid

System libraries

  • VFS: virtual file system layer
  • fmt: add print_byte_hex(), fmt_lpad()
  • 3DES: removed support as 3DES is considered legacy crypto

Networking

  • emCute - a small MQTT-SN implementation
  • sock_dns: a simple DNS resolver

Packages

  • SPIFFS, the first file system supported by RIOT’s VFS layer
  • jerryscript, a Javascript interpreter

Drivers

  • added dynamixel server motor driver
  • removed ltc4150 driver
  • removed smb380 driver

Build System

  • Experimental distributed building using Murdock
  • most makefiles moved from root into makefiles/
  • added submodule support

Special Thanks

We like to give our special thanks to all the companies that provided us with their hardware for porting and testing, namely the people from (in alphabeticalorder): Atmel, Freescale, Imagination Technologies, Nordic, OpenMote, Phytec, SiLabs, UDOO, and Zolertia; and also companies that directly sponsored development time: Cisco Systems, Eistec, Ell-i, Enigeering Spirit, Nordic, OTAkeys and Phytec.

More information

http://www.riot-os.org

Mailing lists

IRC

  • Join the RIOT IRC channel at: irc.freenode.net, #riot-os

License

  • Most of the code developed by the RIOT community is licensed under the GNU Lesser General Public License (LGPL) version 2.1 as published by the Free Software Foundation.
  • Some external sources are published under a separate, LGPL compatible license (e.g. some files developedby SICS).

All code files contain licensing information.