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RELEASE 2016.07

Martine Lenders 7 years ago committed by GitHub
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RIOT-2016.07 - Release Notes
RIOT is a real-time multi-threading operating system that supports 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, real-time
capabilities, small memory footprint, modularity, and uniform API access,
independent of the underlying hardware (this API offers partial POSIX
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 was focused primarily on fixing bugs, but also adds two new
supported radio transceivers: CC2420 and CC2538.
This new radio support allows to new interoperability tests with other OS,
allowing code size comparison and overall network performance for
platforms based on these radios.
About 198 pull requests with about 325 commits have been merged since the
last release and about 65 issues have been solved. 46 people contributed with
code in 112 days. 632 files have been touched with 19863 insertions and
3682 deletions.
Notations used below:
+ means new feature/item
* means modified feature/item
- means removed feature/item
New features and changes
* No major changes or new features coming on this release.
+ Introduced Mailbox IPC API (#4919)
* Improved clist
Network Stack
+ Introduction of netstats in several platforms.
* RPL optional auto initialisation
+ Added statistics for TLSF package (#5418)
+ Added U8g2 library for monochrome displays (#5549)
* Added on-the-fly content creation for CCN-lite.
+ nrf52dk: add support for building with Nordic SoftDevice (6lo over BLE)
+ Added support for Libellium's waspmote-pro board.
+ Added support for the iotlab A8/M3 node (
+ Added initial and rudimentary port for TI cc2650stk "SensorTag" (#4675)
+ Split Zolertia Remote support into Remote Prototype A (remote-pa) and
Remote Revision A (remote-reva)
+ Texas Instruments CC2538 RF driver (PR #5291)
+ Texas Instruments CC2420 RF driver (PR #5591)
+ Bosch BM180 sensor.
+ Added XBee optional AES encryption support
System libraries
* Several xtimer bug fixes
Build System
+ Ubuntu 16.04 packaged gcc-arm-none-eabi toolchain can now be used to compile
RIOT for ARM boards
* Reworked UART and code factorisation for ATmega CPUs.
API changes
* Unified interface of hashing functions
Fixed Issues from the last release
#3824: native: gnrc: hardcore pinging crashes.
#4583: cpp11: clang doesn't allow mutex_t to be used with constexpr All
cpp11-* tests fail with clang.
#5388: gnrc_sixlowpan_iphc_nhc: receiving NHC compressed UDP
packets hits assert in IPv6 (Fixed by #5281).
Known Issues
#3075: nhdp: unnecessary microsecond precision NHDP works with timer
values of microsecond precision which is not required. Changing to lower
precision would save some memory.
#3086: Max. packet length for AT86RF2XX
#4048: potential racey memory leak According to the packet buffer stats,
flood-pinging a multicast destination may lead to a memory leak due to a
race condition. However, it seems to be a rare case and a completely filled
up packet buffer was not observed.
#5005: ndp: router advertisement sent with global address Under some
circumstances a router might send RAs with GUAs. While they are ignored
on receive (as RFC 4861 specifies), RAs should have link-local addresses
and not even be send out this way.
#5007: gnrc icmpv6: Ping reply goes out the wrong interface
#5055: cpuid: multiple radios will get same EUI-64 Nodes with multiple
interfaces might get the same EUI-64 for them since they are generated from
the same CPU ID.
#5230: gnrc ipv6: multicast packets are not dispatched to the upper layers.
(Fix exists, but was postponed)
#5390: pkg: OpenWSN does not compile This package still uses deprecated
modules and was not tested for a long time.
native related issues
#495: native not float safe When the FPU is used when an asynchronous
context switch occurs, either the stack gets corrupted or a floating point
exception occurs.
#534: native debugging on osx fails Using valgrind or gdb with a nativenet
target in OSX leads to "the network" being stuck (gdb) or the whole process
being stuck (valgrind).
#334: nativenet crashes when hammered Flood-pinging a native instance
from more than one host (either multiple threads on the host system or multiple
other native instances), leads to a SEGFAULT.
#2071; WIP: native: overdue fixes
#4590: pkg: building relic with clang fails.
#5432: native: valgrind fails
other platform related issues
#4560: make: clang is more pedantic than gcc oonf_api is not building with
(Partly solved by #4593)
#4866: not all GPIO driver implementations are thread safe Due to non-atomic
operations in the drivers some pin configurations might get lost.
#5486: at86rf2xx: lost interrupts
other issues
#1263: TLSF implementation contains (a) read-before-write error(s).
#2761: core: define default flags If a thread is created without the
corresponding flag (CREATE_STACKTEST), the ps command will yield wrong
numbers for the stack usage.
#2927: core: Automatically select the lowest possible LPM mode Not all
available low power modes (LPMs) are implemented for each platform and the
concept of how the LPM is chosen needs some reconsideration.
#2967: Makefile.features: location is not relevant for all features Provided
features for the build system should be split up into a board and cpu specific part
#4488: Making the newlib thread-safe When calling puts/printf after
thread_create(), the CPU hangs for DMA enabled uart drivers.
#4841: xtimer: timer already in the list Under some conditions an xtimer can end
up twice in the internal list of the xtimer module.
#5338: xtimer: xtimer_now() not ISR safe For non-32-bit platforms.
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, Limifrog, Nordic, OpenMote, Phytec, SiLabs, UDOO,and Zolertia;
and also companies that directly sponsored development time:Cisco Systems,
Eistec, Ell-i, Enigeering Spirit, Nordic, FreshTemp LLC, and Phytec.
More information
Mailing lists
* RIOT OS kernel developers list
* (
* RIOT OS users list
* (
* RIOT commits
* (
* Github notifications
* (
* Join the RIOT IRC channel at:, #riot-os
* 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 developed by SICS).
All code files contain licensing information.
RIOT-2016.04 - Release Notes
RIOT is a real-time multi-threading operating system that supports a range of