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RIOT-2014.12 - 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: from 8-bit
microcontrollers to 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
compliance).
New features
============
Core
----
+ introduced new thread_yield() and renamed the old implementation to thread_yield_higher()
Supported platforms
-------------------
Additional support for the following boards:
+ Arduino Mega 2560 (first-time support of an 8-bit platform)
+ HikoB Fox
+ Atmel samr21-Xplained Pro
+ OpenMote
+ cc2538 Developer Kit
+ Spark-Core
+ f4vi1
+ Airfy-Beacon
+ STMF0Discovery Board
+ STMF3Discovery Board
+ STMF4Discovery Board
+ nrf51822 Development Kit
+ yunjia-nrf51822
+ MSB-IoT
+ native on ARM platforms
Drivers
-------
+ various peripheral drivers (ADC, UART, timer, SPI, I²C, RTC, RTT, DAC, PWM...)
+ MQ-3 alcohol sensor
+ ISL29020 light sensor
+ LPS331AP pressure sensor
+ LSM303DLHC accelerometer
+ L3G4200D gyroscope
+ servo motor
+ TI HDC 1000 low power humidity and temperature digital sensor
+ SRF02/SRF08 ultrasonic range sensors
+ PIR motion sensor
+ RGB LED
Network Stack
---------------
+ AODVv2
+ RPL non-storing mode
+ OF manager for RPL
+ Source Routing Header support
+ introduced netapi
+ introduced netdev, a general interface for network device drivers
+ introduced global packet buffer
System libraries
----------------
+ CBOR
+ UBJSON
+ color module for PWM
Packages
--------
+ libfixmath
Other
-----
+ C++ support for most platforms
+ PCAP based wireless sniffer
Changes
=======
Core
----
* PIDs begin with 1
* mamximum 16 priority levels for every platform
* fixed sched_switch()
* simplified mutex signatures
* minimized size of TCB
* allow hwtimer to run with more than 1MHz
* imported ringbuffer from sys
Supported platforms
-------------------
* improved iot-lab_M3 support
* major improvements on the mbed LPC1768
* improved at86rf231 radio driver
* fixed hwtimer for MSP430
* added support for timer B for MSP430
* fixed thread_yield() for MSP430
* several fixes for the cc2420
* improved interrupt handling on ARM
* adjusted stack sizes for Cortex platforms
Network Stack
---------------
* refactored CCN-lite
* refactored RPL
* renamed destiny to transport_layer and socket_base
* several fixes for TCP
* split UDP and TCP
System libraries
----------------
- removed hashtable implementation
Packages
--------
* updated and simplified OpenWSN
Other
-----
* Improved and cleaned up build system
* various new helper targets (like debug, distclean, reset, objdump...)
* use newlib's nano specs if available
* various new features and added Python 3 compatibility for pyterm
* major reduction of warnings in doxygen and improved html layout
Fixed Issues from the last release
==================================
#426: Interrupt handling on MSP430 is buggy
Several fixes by @rousselk
#1798: core: first thread on runqueue is scheduled twice
Was fixed along with the thread_yield() refactoring
#1127: Random build fails on OSX
native is building stable also on OSX now
Known Issues
============
network related issues
----------------------
#21: Deal with stdin in bordermultiplex.c
Not all supported platforms provide a stdin in the current release.
However, the implementation of the 6LoWPAN border router won't work
without stdin.
#861: neighbor discovery for 6LoWPAN not working
Duplicate address detection according to RFC 6775 is also missing.
#1577: ccn-lite: populate does not work with disabled cache
If cache is set to zero, the chunks cannot be loaded and therefore also not get populated.
#1870: IPv6 neighbor advertisements are malformed
According to Wireshark, ICMPv6 neighbor advertisements are malformed (wrong
checksum or other reasons).
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.
#499: native is segfaulting on heavy network usage
Sending more than 100 packets per second causes a SEGFAULT in RIOT native.
#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).
#715: test_hwtimer_wait fails on native
The problem appears to be lost signals and depends on the CPU speed.
#787: reboot not working with open file descriptors on native
If for example a tap device is in use, the reboot command fails.
#862: sometimes the tap bridge does not work in native
Sometimes (rather suddenly) packages are not received by a TAP and won't be
received even if I reconfigure the bridge.
other platform related issues
-----------------------------
#1232: x86 doesn't build on OS X with clang
Current version of the x86 port doesn't build for OS X with clang.
#1442: setting channel is not persistent cc2420
After changing the channel via a shell command, the channel reverts back to an arbitrary
value. However, this might be only a shell problem.
#1753: vtimer_msg test crashes after ~49'20"
dependent on the platform, vtimer stops working after some time.
#1891: printf formatting does not work properly on some Cortex platforms for 64 bit numbers
This problem happens mostly for the Newlib nano, which does not support 64 bit integer
printing, but sometimes happens also with other toolchains.
#1964 and #1955: eventual problems with IoT-LAB M3 nodes in the testbed
The shell is sometimes not properly working after a reboot and the PDR is sometimes
worse than expected.
#2143: tests.core doesn't compile for all platforms
For some missing GCC compiler builtins, the unittests do not compile for MSP430
platforms.
#2228: samd21 stack sizes are too small
The application examples/default for example will crash when issuing the txtsnd command
other issues:
--------------
#1449: a removed vtimer might still get called back by hwtimer
The timer callback might still fire even after vtimer_remove() was called.
#2175: valgrind registeres "Invalid write of size 4" in unittests for ubjson
According to valgrind the stack gets corrupted in UBJSON.
For all issues and open pull requests please check the RIOT issue tracker:
https://github.com/RIOT-OS/RIOT/issues
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 alphabetical order): airfy, Atmel, ELL-i, Intel, IoT-Lab, mbed, Phytec, and Udoo
More information
================
http://www.riot-os.org
Mailing lists
-------------
* RIOT OS kernel developers list
* devel@riot-os.org (http://lists.riot-os.org/mailman/listinfo/devel)
* RIOT OS users list
* users@riot-os.org (http://lists.riot-os.org/mailman/listinfo/users)
* RIOT commits
* commits@riot-os.org (http://lists.riot-os.org/mailman/listinfo/commits)
* Github notifications
* notifications@riot-os.org (http://lists.riot-os.org/mailman/listinfo/notifications)
License
=======
* All sources and binaries that have been developed at Freie Universität Berlin
and most of the other code are licensed under the GNU Lesser General Public
License version 2 as published by the Free Software Foundation.
* Some external sources, especially files developed by SICS are published under
a separate license.
All code files contain licensing information.
RIOT-2014.05 - 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: from 16-bit
microcontrollers to 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
compliance).
New features
============
Core
----
+ introduced explicit core/cpu interface through a set of header files
+ added reboot and panic functions
+ added a node name to the sysconfig struct
+ added the ability to send a message to the current thread's message queue
Supported platforms
-------------------
Additional support for the following boards:
+ Arduino Due
+ UDOO board
+ X86 via qemu
+ Zolertia Z1
Network stack
-------------
+ added net_if as abstraction layer between transceiver module and L3 protocol
+ added support for auto initializing of the 6LoWPAN network stack
+ added support for RFC5444 via oonf_api (from OLSR.org)
+ added a Wireshark dissector for nativenet packets
+ introduced low-level radio driver interface
+ added a default transceiver for all boards
+ common IEEE 802.15.4 radio driver API definition
+ added standard way to query CCA (Clear Channel Assessment) status
+ enabled nonces in interests for CCN-lite (Content Centric Networking)
+ added a route shell command
System libraries
----------------
+ added quad-precision math library (quad_math)
Automated Testing
-----------------
+ added Travis CI based build tests
+ added support for a Jenkins CI server
+ added a unittest framework (based on embunit)
+ added unittests for most core functions
POSIX compliance
----------------
+ pthread support including
+ dynamic memory pool and cleanup handlers
+ mutexes
+ condition variable implementation
+ reader/writer lock
+ pthread_barrier_* functions
Native
------
+ added a valgrind and cachegrind targets
+ added profiling support
Changes
=======
Core
----
* initialize hwtimer automatically
* optimized thread status field usage
* moved oneway_malloc to sys
* prefixed API functions correctly
Network stack
-------------
* major refactoring and decoupling
* refactor use of vtimer
* fixed forwarding
* added IoT-LAB M3 Open Node support and dropped TelosB support temporarily for OpenWSN
* moved ETX beaconing to a module on its own
* various byte order and other bug fixes
Drivers
-------
* added low-level driver interface for unified CPU peripheral abstraction for
GPIO, ADC, PWM, Timer and UART
* handle race conditions preventing timers to be set correctly on MSP430 MCUs
* several CC2420 fixes
System libraries
----------------
* auto_init is used by default
* changed function prototype for shell handlers
Other
-----
* cleaned up Makefile system and simplified binary directory
* improved documentation for core and sys
* build system uses PKG dependency
* build system sets include paths automatically
* black and white lists for applications and tests
* add stacksize checker for DEBUG macro
* styling corrections
* fixed license boiler plates
* set lpc2k_pgm return value correctly
* various bug fixes and cleanups
Fixed Issues from the last release
==================================
#45: bit field order in the fcf may be wrong
The CC2420 FIFO expects the IEEE802.15.4 FCF field in reversed bit order.
With this release the byte order is now handled by the net_if module and
all device specific handling is done by the driver.
#82: Setting STATUS_REPLY_BLOCKED thread to STATUS_PENDING though it is not
handled yet
In some rare cases the status of a thread might falsely change to
STATUS_PENDING instead of STATUS_REPLY_BLOCKED.
#455: sha256 is broken on MSP430
Fixed.
#498: native is segfaulting at startup
Fixed by several PRs (#501, #583, and #588).
#505: native on FreeBSD is broken
Fixed by PR #1022.
Known Issues
============
network related issues
----------------------
#21: Deal with stdin in bordermultiplex.c
Not all supported platforms provide a stdin in the current release.
However, the implementation of the 6LoWPAN border router won't work
without stdin.
#861: neighbor discovery for 6LoWPAN not working
Duplicate address detection according to RFC 6775 is also missing.
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.
#499: native is segfaulting on heavy network usage
Sending more than 100 packets per second causes a SEGFAULT in RIOT native.
#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).
#715: test_hwtimer_wait fails on native
The problem appears to be lost signals and depends on the CPU speed.
#787: reboot not working with open file descriptors on native
If for example a tap device is in use, the reboot command fails.
#862: sometimes the tap bridge does not work in native
Sometimes (rather suddenly) packages are not received by a TAP and won't be
received even if I reconfigure the bridge.
#1127: Random build fails on OSX
Building for native on OSX often fails - Workaround: build using -B flag,
e.g.: make -B clean all
other platform related issues
-----------------------------
#426: Interrupt handling on MSP430 is buggy
UART and timer handling is currently unstable on MSP430 based platforms
#1232: x86 doesn't build on OS X with clang
Current version of the x86 port doesn't build for OS X with clang.
For all issues and open pull requests please check the RIOT issue tracker:
https://github.com/RIOT-OS/RIOT/issues
More information
================
http://www.riot-os.org
Mailing lists
-------------
* RIOT OS kernel developers list
* devel@riot-os.org (http://lists.riot-os.org/mailman/listinfo/devel)
* RIOT OS users list
* users@riot-os.org (http://lists.riot-os.org/mailman/listinfo/users)
* RIOT commits
* commits@riot-os.org (http://lists.riot-os.org/mailman/listinfo/commits)
* Github notifications
* notifications@riot-os.org (http://lists.riot-os.org/mailman/listinfo/notifications)
License
=======
* All sources and binaries that have been developed at Freie Universität Berlin
and most of the other code are licensed under the GNU Lesser General Public
License version 2 as published by the Free Software Foundation.
* Some external sources, especially files developed by SICS are published under
a separate license.
All code files contain licensing information.
RIOT-2014.01 - 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: from 16-bit
microcontrollers to 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
compliance).
New features
============
Core
----
+ msg_receive() with timeout
+ LPM support for MSP430 based platforms
+ introduced a version string
Supported platforms
-------------------
Additional support for the following boards:
+ TelosB
+ mbed LPC1768
Sensor drivers
---------------
+ drivers for the LM75A Digital temperature sensor and thermal watchdog
+ SRF02 and SRF08 ultrasonic range finders
Native port
-----------
+ implemented UART via I/O redirection or TCP and UNIX socket
System libraries
----------------
+ Mersenne twister pseudorandom number generator
+ crypto libraries
+ 3des
+ aes
+ rc5
+ skipjack
+ twofish
+ BSD-like package system for easy integration of external libraries
Network stack
-------------
+ port of CCN lite
+ POSIX socket wrapper
+ integration of libcoap
+ integration of OpenWSN
Further Changes
===============
* boards and projects repositories have been integrated and are now part of
the RIOT repository itself
* full refactoring of the network stack and introducing a substructure
according to the modules' functionalities
* cleaned up Makefile system and simplified binary directory
* more documentation
* various bug fixes and cleanups
Fixed Issues from the last release
==================================
#45: bit field order in the fcf may be wrong
The CC2420 FIFO expects the IEEE802.15.4 FCF field in reversed bit order.
With this release the byte order is now handled by the net_if module and
all device specific handling is done by the driver.
#82: Setting STATUS_REPLY_BLOCKED thread to STATUS_PENDING though it is not
handled yet
Pull Request #569 fixed this bug by checking for STATUS_REPLY_BLOCKED in
msg_receive().
#455: sha256 is broken on MSP430
The problem was caused
Known Issues
============
#21: Deal with stdin in bordermultiplex.c
Not all supported platforms provide a stdin in the current release.
However, the implementation of the 6LoWPAN border router won't work
without stdin.
#426: Interrupt handling on MSP430 is buggy
UART and timer handling is still unstable on MSP430 based platforms.
#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.
#498: native is segfaulting at startup
In some cases (about 5-10%) a RIOT native process crashes with a SEGFAULT
at startup.
#499: native is segfaulting on heavy network usage
Sending more than 100 packets per second causes a SEGFAULT in RIOT native.
#505: native on FreeBSD is broken
Due to different parameter handling in FreeBSD, native is currently not
working there.
For all issues and open pull requests please check the RIOT issue tracker:
https://github.com/RIOT-OS/RIOT/issues
Release 2013.08
===============
Kernel
------
- Microkernel with a powerful messaging system
- Multi-Threading with low overhead
- an energy-efficient, real-time capable scheduler
- small memory footprint
Userspace
---------
- 6LoWPAN according to RFC 4944, RFC 6282, and RFC 6775
- TCP and UDP
- RPL according to RFC 6550 and RFC 6719
- High resolution and long-term timers
- POSIX IO and BSD socket API
- Bloom filter
- SHA256
Hardware Support
----------------
- various ARM and MSP430 MCUs
* ARM7 NXP LPC2387
* TI MSP430F1612
* TI CC430F6137
* ARM7 Freescale MC13224v (preliminary)
* ARM Cortex-M4 STM32f407vgt6 (preliminary)
* ARM Cortex-M3 STM32f103rey6 (preliminary)
- radio drivers
* TI CC1100 and CC1101
* TI CC2420
* Atmel AT86RF231
- sensor drivers
* Sensirion SHT11
* Linear Technology LT4150
More information
================
http://www.riot-os.org
Mailing lists
-------------
* RIOT OS kernel developers list
* devel@riot-os.org (http://lists.riot-os.org/mailman/listinfo/devel)
* RIOT OS users list
* users@riot-os.org (http://lists.riot-os.org/mailman/listinfo/users)
* RIOT commits
* commits@riot-os.org (http://lists.riot-os.org/mailman/listinfo/commits)
* Github notifications
* notifications@riot-os.org (http://lists.riot-os.org/mailman/listinfo/notifications)
License
=======
* All sources and binaries that have been developed at Freie Universität Berlin are
licensed under the GNU Lesser General Public License version 2 as published by the
Free Software Foundation.
* Some external sources, especially files developed by SICS are published under
a separate license.
All code files contain licensing information.
Release 2013.08
===============
Kernel
------
- Microkernel with a powerful messaging system
- Multi-Threading with low overhead
- an energy-efficient, real-time capable scheduler
- small memory footprint
Userspace
---------
- 6LoWPAN according to RFC 4944, RFC 6282, and RFC 6775
- TCP and UDP
- RPL according to RFC 6550 and RFC 6719
- High resolution and long-term timers
- POSIX IO and BSD socket API
- Bloom filter
- SHA256
Hardware Support
----------------
- various ARM and MSP430 MCUs
* ARM7 NXP LPC2387
* TI MSP430F1612
* TI CC430F6137
* ARM7 Freescale MC13224v (preliminary)
* ARM Cortex-M4 STM32f407vgt6 (preliminary)
* ARM Cortex-M3 STM32f103rey6 (preliminary)
- radio drivers
* TI CC1100 and CC1101
* TI CC2420
* Atmel AT86RF231
- sensor drivers
* Sensirion SHT11
* Linear Technology LT4150
More information
================
http://www.riot-os.org
Mailing lists
-------------
* RIOT OS kernel developers list
* devel@riot-os.org (http://lists.riot-os.org/mailman/listinfo/devel)
* RIOT OS users list
* users@riot-os.org (http://lists.riot-os.org/mailman/listinfo/users)
* RIOT commits
* commits@riot-os.org (http://lists.riot-os.org/mailman/listinfo/commits)
* Github notifications
* notifications@riot-os.org (http://lists.riot-os.org/mailman/listinfo/notifications)
License
=======
* All sources and binaries that have been developed at Freie Universität Berlin are
licensed under the GNU Lesser General Public License version 2 as published by the
Free Software Foundation.
* Some external sources, especially files developed by SICS are published under
a separate license.
All code files contain licensing information.