release-notes.txt

RIOT-2018.10.1 - Release Notes
==============================
This is a bug fixing release for the RIOT 2018.10 release.
The following bugs were fixed:

#10757: sock_dns: fix out-of-bound errors
    - sock_dns: remove out-of-place puts() call
    - sock_dns: remove some magic numbers
    - sock_dns: fix out-of-bound errors

#10759: 2018.10 compile fixes
    - pkg/jerryscript: disable -Wconversion for llvm
    - pkg/nimble: disable -Waddress-of-packed-member for llvm
    - pkg/tinycrypt: update commit hash after upstream rewrote history

#10285: at86rf2xx: release framebuffer on recv with (len > 0) && (buf == NULL)
    - at86rf2xx: correct framebuffer release


RIOT-2018.10 - Release Notes
============================
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 and 16-bit microcontrollers as well as
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:
===================

The 2018.10 release includes new features, like CoAP Resource Directory and
Block2, ESP32 support, rework of I2C interface, EEPROM registry,
Full and Minimal Thread Devices support in OpenThread and compliance of
LoRaWAN 1.0.2 (ABP counters stored in EEPROM). Several boards were introduced.

During the last release the board documentation was migrated from the wiki to
the [RIOT API documentation](https://doc.riot-os.org) to improve the
maintenance of these entries and provide a better user experience when
browsing the documentation. There were also some efforts in grouping some
modules to make them easier to access in the documentation.

There were also some efforts on refactoring, test improvements and bug fixes.

About 392 pull requests with about 914 commits have been merged since the last
release and about 20 issues have been solved. 57 people contributed with code
in 100 days. Approximately 2184 files have been touched with 211964 insertions
and 34806 deletions.


Notations used below:
=====================
    + means new feature/item
    * means modified feature/item
    - means removed feature/item

New features and changes
========================

Community
---------
    + Initial RIOT developer memo + directory structure
    + GitHub feature request template
    + 'testing' in Github PR template
    * Rework and documented labeling system
    * Rework MAINTAINING.md document
    * Rework CONTRIBUTING.md document

Documentation
-------------
    + Add boards `slstk3401a`, `slstk3402a` and `sltb001a`
    + Migrate boards documentation to Doxygen
    + New groups under `sys` (serialization, math, memory management, hashes)
    + `arduino` docs for analog map
    + nanocoap
    + tinycbor pkg
    * Drivers with `saul` support are now also part of the `drivers_saul` group

Core
----
    + Architecture dependent thread information
    * Fix `byteorder` bebuftohs() / htobebufs() on big endian
    * Make `pthread` compilable with g++

System libraries
----------------
    + Add EEPROM registration support
    + Add `arduino` time functions micros() and delayMicroseconds()
    + Add `fmt` hex byte
    + ecc: add golay(24,12) half rate and repetition code
    + tsrb: add drop function
    * Change `base64` api (const + void*)
    * Configure Arduino serial port at compile time
    * Move `hamming256` module to generic `ecc`
    * sys/auto_init: Fixed initialization of `sht1x`
    * crypto/ccm: fix auth_data_len check
    - Remove `cbor` module

Networking
----------
    + cord_ep: Full CoRE Resource Directory endpoint support
    + nanocoap: add server-side Block2 support
    * emb6_sock_udp: copy receive remote correctly
    * ethos: Add drop frame case to recv function
    * examples/gcoap: fix post/put without port number
    * gnrc/6lo: set more data flag on all but last fragment
    * gnrc_ipv6_nib: always configure 802.15.4 long address with IPv6 included
    * gnrc_ipv6_nib: fallback to SLAAC if ARO is ignored by upstream
    * gnrc_ipv6_nib: make automatic NDP packet emission (NS/RS) configurable
    * gnrc_netif: fix l2addr_len > 0, but no l2addr edge-case
    * gnrc_netif: reapply event flags on device reset
    * gnrc_netif_ieee802154: set FCF Frame Pending when more data is expected
    * gnrc_sixlowpan_frag: add page context to reassembly buffer
    * gnrc_sixlowpan: refactored for better interchangability of sub-components
    * gnrc_sock_[udp|ip]: read return value for _recv after release
    * nanocoap: allow empty uri/location path option

Packages
--------
    + libb2: add support (BLAKE2)
    + libhydrogen: add support
    + lora_serialization: LoRa Serialization format support
    + openthread: FTD and MTD support
    + semtech-loramac: add support for RU864 ISM band
    * ccn-lite: update and adapt shell commands
    * jerryscript: bump version
    * littlefs: bump version to v1.6.20
    * lwip: bump to version 2.1.0
    * semtech-loramac: bump to version 4.4.1
    * semtech-loramac: fix uninitialized datarate
    * semtech-loramac: lorawan support is not considered experimental anymore
    * semtech-loramac: use periph_eeprom to store lorawan configuration
    * tiny-asn1: bump version
    * tinycbor: Version bump to 0.5.2

Boards
------
    + i2c configuration for `nucleo-f070`, `nucleo-f091rc`,
      `nucleo-f722ze`, `nucleo-l476rg`, `slstk3402a`.
    + second i2c configuration for `b-l475e-iot01a`
    + esp32-mh-et-live-minikit: add support
    + esp32-olimex-evb: add support
    + esp32-wemos-lolin-d32-pro: add support
    + esp32-wroom-32: add support
    + esp32-wrover-kit: add support
    + esp8266-esp-12x: add support
    + esp8266-olimex-mod: add support
    + esp8266-sparkfun-mod: add support
    + firefly: add support for Zolertia FireFly
    + lobaro_lorabox: add support
    + openmoteb-cc2538: add support
    + samr30-xpro: add support
    + sensebox: add support for `sensebox` and `sensebox_samd21`
    + sodaq_one: add support
    + ublox-c030-u201: add support
    * frdm-k64f: update ADC and `saul` configuration
    * nrf52xxxdk: make reset pin work
    * stm32mindev: rename to `blackpill`

CPU
---
    + efm32: add support for enabling/disabling DC-DC converter
    + esp32: add initial support
    + esp8266: add initial support
    + i2c: introduce and adapt new I2C interface
    + kinetis: add ADC hardware averaging configuration
    + nrf52: add PWM support
    + samr30: add initial support
    + stm32l4: add support for periph_flashpage
    * Add PUF SRAM feature in `nrf5x` and `stm32` families
    * atmega_common: allow defining ROM and RAM length for link
    * cortexm_common/ldscript: simplify generation of firmwares in section of
      the ROM
    * nrf5x_common: fix `gpio` port 1 functionality
    * stm32-common: unified support for periph_i2c. I2C is now supported by
      all stm32 families (F0/1/2/3/4/7, L0/1/4)
    * stm32_common: fix source selection declared as module dependencies

Device Drivers
--------------
    + drivers/ds18: add limited support for Maxim Integrated 1-Wire temperature
      sensor
    + drivers/mma7660: initial support
    + drivers/srf04: add range finder sensor
    + drivers/sx127x: add initial support for multi interrupt pins
    + drivers/tsl4531x: add support for visible light intensity sensor
    + drivers/vcnl40x10: add initial support
    * drivers/*: unify driver initialization parameters scheme
    * drivers/adxl345: fix driver
    * drivers/at86rf2xx: add smart idle listening feature
    * drivers/kw2xrf: Fix ack flag handling
    * drivers/mtd_spi_nor: add 4-byte address flash support
    * drivers/periph_i2c: rework API
    * drivers/sx127x: return correct state when device is receiving

Build System / Tooling
----------------------
    + Makefile.include: Include VERSION file for release
    + dist/tools: add lazysponge tool
    + docker: Use system GIT_CACHE_DIR if available
    + docker: allow using sudo for docker
    + make: introduce periph_gpio_irq
    + make: process include and dep for external modules
    + makefile.iotlab.single.inc.mk: add new supported nodes
    * cflags: use gnu99 only if nothing else is specified (mips, msp430, native)
    * docker/Makefile.include: Fix BUILDRELPATH when RIOTPROJECT is CURDIR
    * docker: export RIOT_CI_BUILD_to docker
    * docker: handle building in git worktree
    * edbg.inc.mk: allow flashing with an offset in rom without erasing all ROM
    * make: add APPDIR to info-build target
    * make: provide support for listing supported and blacklisting toolchains
    * make: unify app folder search (examples/*, tests/*, ...)
    * makefiles/buildtests.inc.mk: fix 'clean-intermediates' not cleaning
    * makefiles/docker.inc.mk: handle building in git worktree
    * openocd.sh: allow flashing binary files without configuration
    * pkg.mk: do not use user identity when applying patches
    * pyterm: handle ctrl+d shortcut nicely

Testing
-------
    + automatic compile tests for LLVM for selected boards
    + shellcheck: add CI check script
    + tests/bench_runtime_coreapis: add benchmark for selected core functions
    + tests/bench_sizeof_coretypes: initial include
    + tests/periph_uart: add automated testing script
    + tests/periph_eeprom: add automated testing script
    + tests/periph_flashpage: add automated testing script
    * murdock: also compile with LLVM/clang
    * murdock: add hook support
    + tests/arduino: add automatic test for arduino module
    + tests/libc_newlib: add test for newlib-nano inclusion
    + tests/periph_uart: add automated testing script
    + tests/gnrc_netif: add test for ULA source selection
    + tests/periph_gpio: add interrupt enable disable command
    + sock_util: Add unittest and fix detected issues


Known Issues
============

Networking related issues
-------------------------

#4527: gnrc_ipv6: Multicast is not forwarded if routing node listens to the
       address
#5016: gnrc_rpl: Rejoining RPL instance as root after reboot messes up rooting
#5051: Forwarding a packet back to its link layer source should not be allowed
#5230: gnrc_ipv6: multicast packes are not dispatched to the upper layers
#5748: gnrc: nodes crashing with too small packet buffer
#6123: gnrc: crash with (excessive) traffic in native
#7474: 6lo: gnrc fragmentation expects driver to block on TX
#7737: pkg: libcoap is partially broken and outdated
#8086: gnrc_rpl_p2p: not compiling
#8130: gcoap: can't build witth network stacks other than gnrc
#8172: gnrc_netif, gnrc_uhcpc: Replacing prefix on border router results in no
       configured prefix
#8271: app/netdev: application stops working after receiving frames with
       assertion or completely without error
#9656: gnrc/netif: various problems after resetting interface a second time
#9889: ethos: desync between ethos::last_framesize and tsrb content possible
#10370: gomach: Resetting netif with cli doesn't return

Timer related issues
--------------------

#5103: xtimer: weird behavior of tests/xtimer_drift
#5338: xtimer: xtimer_now() is not ISR safe
#6052: tests: xtimer_drift_gets_stuck
#7114: xtimer: adds items to the wrong list if the timer overflows between
       _xtimer_now() and irq_disable()
#7347: xtimer_usleep stuck for small values
#8251: telosb: timer config wrong when running o a tmote sky
#9052: misc issues with tests/trickle
#10073: xtimer_usleep wrong delay time

Native related issues
---------------------

#495: native not float safe
#5796 native: tlsf: early malloc will lead to a crash
#6442: cpu/native: timer interrupt issue
#7206: native: race-condition in IPC

Other platforms related issues
------------------------------

#4512: pkg: tests: RELIC unittests fail on iotlab-m3
#4612: pkg: TLSF does not build for 16 bit platforms
#4872: at86rf2xx: Simultaneous use of different transceiver types is not
       supported
#4954: chronos: compiling with -O0 breaks
#4866: periph: GPIO drivers are not thread tafe
#5009: RIOT is saw-toothing in energy consumption (even when idling)
#5218: some use of asm keyword might be missing volatile
#5486: at86rf2xx: lost interrupts
#5774: cpu: cortexm_common: context switching code breaks when compiling with
       LTO
#5848: arduino: Race condition in sys/arduino/Makefile.include
#6018: nRF52: gnrc 6lowpan ble memory leak
#6567: periph/spi: Switching between CPOL=0,1 problems on Kinetis with software
       CS
#6874: SAMD21: possible CMSIS bug
#7020: isr_rfcoreerrors while pinging between CC2538DKs
#7667: sam0 flashpage_write issues
#8028: diskio: failed assertion in send_cmd() on lpc2387
#8045: stm32/periph/uart: extra byte transmitted on first transmission
#8436: Kinetis PhyNode: failed to flash binary > 256K
#8444: tests/thread_priority_inversion hangup
#9619: ATmega platform issues.
#9882: sys/tsrb is not thread safe on AVR
#10338: xbee: setting PAN ID sometimes fails
#10341: driver_my9221 prevents further flashing of nucleo-l073rz
#10345: frdm-k22f cannot flash after certain firmware flashed
#10351: samd21/periph/rtt: Interrupt flags are not correctly cleared
#10353: cpu/nrf5x_common: hwrng hangs

Other issues
------------

#1263: sys: the TLSF implementation contains (a) read-before-write error(s)
#4053: macros: RIOT_FILE_RELATIVE printing wrong file name for headers
#4488: making the newlib thread-safe
#5561: C++11 extensions in header files
#5776: make: Predefining CFLAGS are parsed weirdly
#5863: OSX+SAMR21-xpro: shell cannot handle command inputs larger than 64 chars
#6120: Windows AVR Mega development makefile Error
#7220: sys/fmt: Missing tests for fmt_float,fmt_lpad
#7877: SPI connection can't read 16bit size register
#8107: crypto/ccm: bugs in the implementation of CCM mode
#9548: Many i2c bugs found with the i2c api rework but did not reach the release
#9709: examples: failed assertion in dtls-echo example
#9742: `buildtest` uses wrong build directory
#10121: RIOT cannot compile with the latest version of macOS (10.14) and Xcode 10
#10175: No error returned from aes_init when a key with a bad size is used
#10206: Lua_basic example doesn't flash in b-l072z-lrwan1
#10258: Incorrect default $PORT building for esp32-wroom-32 on macOS
#10287: docker: docker cannot access /etc/localtime on OS X
#10367: sam0.inc.mk: Did not find a device with serial ATML21xxxxxxxx

Fixed Issues from the last release (2018.07)
============================================

#9573: pkg/lwip: assert on samr21-xpro
#9584: drivers/cc2420: add netopt NETOPT_MAX_PACKET_SIZE
#6437: periph/spi: Leftovers from SPI rework in #4780
#6650: GPIO Port shift in cc2538 is unconsistent
#6836: Issuing a reboot on ATmega328p makes the board loop-reboot
#7846: stm32f1: I2C read functions return bogus values with unconnected devices
#9616: at86rf2xx: can not correctly set channel after `NETOPT_STATE_RESET`


You can get the complete detail in the git history and in the release milestone
[Release 2018.10](https://github.com/RIOT-OS/RIOT/milestone/24?closed=1).


Acknowledgements
================
We would like to thank all companies (vendors) that provided us with (their)
hardware for porting and testing RIOT-OS. Further thanks go to companies and
institutions that directly sponsored development time. And finally, big thanks
to all of you contributing in so many different ways to make RIOT worthwhile!

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)

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

License
=======
* 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 and packages are published under a separate license.

All code files contain licensing information.



RIOT-2018.07 - Release Notes
============================
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 and 16-bit microcontrollers as well as
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:
===================

The 2018.07 release includes new features, like NimBLE (ble stack),
a MQTT-SN client, SHA-1 based PRNG, an UUID implementation. The RISC-V CPU
architecture support used by the hifive1 board.
Effort was done on refactoring, documentation, test improvements and bug fixes.

During the last release, maintainers contributed by running the automated test
suites on their boards. This gave valuable feedback on the board support state,
test reliability and where to focus effort to make testing easier and more
reliable.

About 380 pull requests with about 675 commits have been merged since the last
release and about 27 issues have been solved. 45 people contributed with code
in 93 days. Approximately 1678 files have been touched with 147122 insertions
and 16060 deletions.


Notations used below:
=====================
    + means new feature/item
    * means modified feature/item
    - means removed feature/item

New features and changes
========================

Community
---------
    + Maintainers guidelines have been written and added to the repository

Documentation
-------------
    + Fix undefined doxygen groups and add a dedicated static check
    + Extend `auto_init` documentation

Core
----
    + core: clist_foreach() now returns break-causing node

System libraries
----------------
    + puf_sram: SRAM PUF feature to seed PRNGs cortex-m platforms
    + random: SHA-1 based PRNG
    + matstat: Integer mathematical statistics library
    + UUID: [RFC4122](https://tools.ietf.org/html/rfc4122) Unique ID library
    * analog_util: Refactor, add unit test
    - cbor: Deprecation of this module, use cn-cbor or tinycbor package
      instead

Networking
----------
    + asymcute: an asynchronous MQTT-SN client
    + gnrc_ipv6: full duplicate address detection support according to
      [RFC4862](https://tools.ietf.org/html/rfc4862)
    + gnrc_ipv6: support to handle RDNSS option in neighbor discovery
    + netif.h: a network-stack agnostic API to network interfaces
    + lorawan: add example application of autonomous class A device
    * sock_udp: allocate ephemeral port on sock creation when port is 0
    * gnrc_netif: Enable RX and TX complete events after netdev initialization
    * net/gcoap: Refine Observe re-registration
    * net/nanocoap: Build message with coap_pkt_t

Packages
--------
    + NimBLE: Bluetooth Low Energy stack used in mynewt
    + TLSF: re-enable original API to have different pools
    + LUA: Add an example with the shell
    + semtech-loramac: add support for link_check MAC command
    * libcose: Use RIOT random_bytes instead of randombytes
    * tweetnacl: Use RIOT random_bytes instead of randombytes
    * hacl: Use RIOT random_bytes instead of randombytes

Boards
------
    + Nucleo boards use their marketing names
    + HiFive1 (RISC-V)
    + slstk3402a
    + stm32f429i-disc1
    + stm32l476-disco
    + nucleo-l496zg
    + stm32mindev
    + frdm-k22f, frdm-k64f, frdm-kw41z: Add bus configuration for onboard FXOS8700CQ sensor
    * mulle: Fix mixed up RX TX pins on UART0

CPU
---
    + E310 (RISC-V)
    * kinetis: GPIO: Enable the correct IRQn on CM0+
    * kinetis: Refactor PIT timer driver implementation
    * kinetis: Refactor RTT driver
    * kinetis: Refactor clock initialization code
    * kinetis: Refactor LPTMR timer implementation
    * kinetis: Clean up SPI module power handling
    * kinetis: Conditionally enable MCG

Device Drivers
--------------
    + periph_eeprom API with support for STM32 L0/L1 and AVR
    + AT commands parser
    + Fix periph_flashpage for iotlab-a8-m3/iotlab-m3/fox boards
    + IO1 Xplained extension: add support for light sensor and SD card, fix
      GPIOs initialization and SAUL support
    + tests/bench_timers: A comprehensive benchmark for periph_timer

Build System / Tooling
----------------------
    + Correctly set the RIOT_VERSION on release archives
    + iotlab-m3/iotlab-a8-m3: fix boards flashing
    + Fix use of non completely initialized BASELIBS variable
    + newlib.mk: extract gcc include search directories for newlib-nano support
    + llvm: many compatibilities issues have been resolved
    * testbed-support: use new iot-lab command names

Testing
-------
    + Address some of the failing tests
    + New tests enabled by default in CI
    + Improve testing automation for release testing

Known Issues
============

Networking related issues
-------------------------

#4527: gnrc_ipv6: Multicast is not forwarded if routing node listens to the
       address
#5016: gnrc_rpl: Rejoining RPL instance as root after reboot messes up rooting
#5051: Forwarding a packet back to its link layer source should not be allowed
#5230: gnrc_ipv6: multicast packes are not dispatched to the upper layers
#5748: gnrc: nodes crashing with too small packet buffer
#6123: gnrc: crash with (excessive) traffic in native
#7474: 6lo: gnrc fragmentation expects driver to block on TX
#7737: pkg: libcoap is partially broken and outdated
#8086: gnrc_rpl_p2p: not compiling
#8130: gcoap: can't build witth network stacks other than gnrc
#8172: gnrc_netif, gnrc_uhcpc: Replacing prefix on border router results in no
       configured prefix
#8271: app/netdev: application stops working after receiving frames with
       assertion or completely without error
#9616: at86rf2xx: can not correctly set channel after `NETOPT_STATE_RESET`
#9656: gnrc/netif: various problems after resetting interface a second time
#9573: pkg/lwip: assert on samr21-xpro
#9584: drivers/cc2420: add netopt NETOPT_MAX_PACKET_SIZE

Timer related issues
--------------------

#5103: xtimer: weird behavior of tests/xtimer_drift
#5338: xtimer: xtimer_now() is not ISR safe
#6052: tests: xtimer_drift_gets_stuck
#7114: xtimer: adds items to the wrong list if the timer overflows between
       _xtimer_now() and irq_disable()
#7347: xtimer_usleep stuck for small values
#8251: telosb: timer config wrong when running o a tmote sky
#9052: misc issues with tests/trickle

Native related issues
---------------------

#495: native not float safe
#5796 native: tlsf: early malloc will lead to a crash
#6442: cpu/native: timer interrupt issue
#7206: native: race-condition in IPC

Other platforms related issues
------------------------------

#4512: pkg: tests: RELIC unittests fail on iotlab-m3
#4612: pkg: TLSF does not build for 16 bit platforms
#4872: at86rf2xx: Simultaneous use of different transceiver types is not
       supported
#4954: chronos: compiling with -O0 breaks
#4866: periph: GPIO drivers are not thread tafe
#5009: RIOT is saw-toothing in energy consumption (even when idling)
#5128: some use of asm keyword might be missing volatile
#5486: at86rf2xx: lost interrupts
#5774: cpu: cortexm_common: context switching code breaks when compiling with
       LTO
#5848: arduino: Race condition in sys/arduino/Makefile.include
#6018: nRF52: gnrc 6lowpan ble memory leak
#6437: periph/spi: Leftovers from SPI rework in #4780
#6567: periph/spi: Switching between CPOL=0,1 problems on Kinetis with software
       CS
#6650: GPIO Port shift in cc2538 is unconsistent
#6838: Issuing a reboot on ATmega328p makes the board loop-reboot
#6874: SAMD21: possible CMSIS bug
#7020: isr_rfcoreerrors while pinging between CC2538DKs
#7667: sam0 flashpage_write issues
#7846: stm32f1: I2C read functions return bogus values with unconnected devices
#8028: diskio: failed assertion in send_cmd() on lpc2387
#8045: stm32/periph/uart: extra byte transmitted on first transmission
#8436: Kinetis PhyNode: failed to flash binary > 256K
#8444: tests/thread_priority_inversion hangup
#9616: ATmega platform issues.

Other issues
------------

#1263: sys: the TLSF implementation contains (a) read-before-write error(s)
#4053: macros: RIOT_FILE_RELATIVE printing wrong file name for headers
#4488: making the newlib thread-safe
#5561: C++11 extensions in header files
#5776: make: Predefining CFLAGS are parsed weirdly
#5863: OSX+SAMR21-xpro: shell cannot handle command inputs larger than 64 chars
#6120: Windows AVR Mega development makefile Error
#7220: sys/fmt: Missing tests for fmt_float,fmt_lpad
#7877: SPI connection can't read 16bit size register
#8107: crypto/ccm: bugs in the implementation of CCM mode
#9548: Many i2c bugs found with the i2c api rework but did not reach the release
#9709: examples: failed assertion in dtls-echo example

Fixed Issues from the last release (2018.04)
============================================

#8112 crypto/ccm: fix input_len checking with length_encoding
#8532 kinetis: timer_set_absolute randomly misses its target
#8778 sys/random: random_uint32_range is only uniform if range is a power of 2
      bug quality defect
#9065 flashpage_write broken on iotlab-m3
#9154 cpu/lpc2387: Fixed broken SPI driver
#9451 Makefile.include: fully define BASELIBS before using its value
#9579 stm32_common: fix ram length for MCUs with non-contiguous ram regions
#9675 tests: gnrc_netif: fix group join iteration macro


You can get the complete detail in the git history and in the release milestone
[Release 2018.07](https://github.com/RIOT-OS/RIOT/milestone/23?closed=1).


Acknowledgements
================
We would like to thank all companies (vendors) that provided us with (their)
hardware for porting and testing RIOT-OS. Further thanks go to companies and
institutions that directly sponsored development time. And finally, big thanks
to all of you contributing in so many different ways to make RIOT worthwhile!

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)

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

License
=======
* 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 and packages are published under a separate license.

All code files contain licensing information.



RIOT-2018.04 - Release Notes
============================
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 and 16-bit microcontrollers as well as
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:
===================
The 2018.04 release includes major progress in support for current crypto
libraries.  A lot of work has gone into updating drivers to RIOT's unified
configuration scheme.  Support for ten new boards has been added.  In our quest
to improve and automate testing, many test scripts have been fixed and
improved, and RIOT's CI now runs many tests on real hardware during its nightly
build testing. And as usual, many tiny fixes and improvements have been merged.

About 390 pull requests with about 1073 commits have been merged since the last
release and about 54 issues have been solved. 44 people contributed with code
in 98 days. Approximately 1491 files have been touched with 208426 insertions.


Notations used below:
=====================
    + means new feature/item
    * means modified feature/item
    - means removed feature/item

New features and changes
========================
System libraries
----------------
    - cbor: deprecated in favour of cn-cbor
    + hashes: add sha-3 implementation

Networking
----------
    * netdev: replaced "struct iovec" with iolist_t
    + nanocoap: added server-side block1 support
    + skald: a BLE advertising stack

Packages
--------
    + cayenne-lpp: A Cayenne LPP library written in C
    + HACL*: a formally verified cryptographic library written in F*
    + qDSA: Small and Secure Digital Signatures with Curve-based
            Diffie--Hellman Key Pairs
    + libcose: Constrained node COSE library
    + cn-cbor: A constrained node implementation of CBOR in C
    + ucglib

Boards
------
    + arduino-mkrfox1200
    + frdm-kw41z
    + jiminy-mega256rfr2
    + mega-xplained
    + nucleo-l433rc
    + nucleo-l452re
    + slstk3401a
    + slwstk6000b
    + stk3600
    + stk3700

CPU
---
    + atmega1284p
    + NXP Kinetis KW41Z

Device Drivers
--------------
    + bmx055: Bosch bmx055 9-axis IMU
    + ata8520e: Microchip ATA8520E Sigfox(tm) transceiver

Build System / Tooling
----------------------
    + ci: initial on-hardware test support

Known Issues
===========

Please refer to the issue tracker at https://github.com/RIOT-OS/RIOT/issues.

Acknowledgements
================
We would like to thank all companies (vendors) that provided us with (their)
hardware for porting and testing RIOT-OS. Further thanks go to companies and
institutions that directly sponsored development time. And finally, big thanks
to all of you contributing in so many different ways to make RIOT worthwhile!

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)

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

License
=======
* 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 and packages are published under a separate license.

All code files contain licensing information.



RIOT-2018.01 - Release Notes
============================
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 and 16-bit microcontrollers as well as
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:
===================
The 2018.01 release includes major progress in RIOTs network communication
capabilities, i.e., rewrite of GNRC's neighbour discovery, confirmable messages
in (g)CoAP, LoRa, and GoMacH as well as updates on CCN-lite and LWIP.
Furthermore, RIOT contributes to _IKEA-Hacking_ by bringing support for
the smart home lighting system TRADFRI (note: this will void the warranty).
Needless to say that this release also adds and updates support for several
platforms, drivers, and of course lots of enhancements to the documentation
as well as numerous bug fixes. Last but not least, RIOT now has an official
code of conduct (https://github.com/RIOT-OS/RIOT/blob/master/CODE_OF_CONDUCT.md)

More than 442 pull requests with about 865 commits have been merged since the
last release and about 96 issues have been solved. 54 people contributed with code
in 96 days. Approximately 2370 files have been touched with 223970 insertions
and 181409 deletions.


Notations used below:
=====================
    + means new feature/item
    * means modified feature/item
    - means removed feature/item


New features and changes
========================
System libraries
----------------
    + event: event queue framework like libevent

Networking
----------
    + gcoap: confirmable messages
    + nanocoap: no external package anymore
    * GNRC: major rewrite of neighbour discovery
    * GNRC: new API for network interface handling

Packages
--------
    + gecko_sdk: library for EFM/EFR/EZR32 MCUs
    * libcoap: git patching fixed
    + littlefs: filesystem for constraint devices
    - nanocoap: now part of RIOT
    * openthread: updated
    + semtech-loramac: LoRa MAC
    + umorse: morse encoder

Boards
------
    + acd52832
    * common: restructured shared code for boards
    + b-l475e-iot01a
    + bluepill
    + ikea-tradfri
    - pca10000
    - pca10005
    - qemu-i386
    + ruuvitag
    + sltb001a
    + teensy31
    + thingy52
    - x86

CPU
---
    + efm32
    * kinetis: unified all MCU variants
    - x86

Device Drivers
--------------
    + socket_zep: emulated IEEE 802.15.4 device over a UDP for native
    + hts221
    + lc709203f
    + lis2dh12
    + rn2xx3
    + soft_spi
    + tja1042

Build System / Tooling
----------------------
    + flake8: python code checker
    * make: set `-Wall -Wextra` as default for all compilers and platforms
    - sniffer: moved to applications repository
    + tests: add automated test scripts for many apps


Fixed Issues from the last release (2017.10)
============================================
#2143: unittests: tests-core doesn't compile for all platforms
#4499: handle of l2src_len in gnrc_ndp_rtr_sol_handle
#4822: kw2xrf: packet loss when packets get fragmented
#5005: ndp: router advertisement sent with global address
#5122: NDP: global unicast address on non-6LBR nodes disappears after a while
#5656: Possible Weakness with locking in the GNRC network stack
#5790: ND: Lost of Global IPV6 on node after sending lot of UDP frame from BR
#5944: msp430: ipv6_hdr unittests fail
#6451: Wrong value in SRF08 driver
#6502: cpu/stm32l1: RTC broken


Known Issues
============
Networking related issues
-------------------------
#5230: gnrc ipv6: multicast packets are not dispatched to the upper layers
#5858: gnrc: 6lo: potential problem with reassembly of fragments: If one frame
       gets lost the reassembly state machine might get out of sync
#7035: lwIP: hangs due to sema change after a while

Timer related issues
--------------------
#5103: xtimer: weird behavior of tests/xtimer_drift: xtimer_drift randomly
       jumps a few seconds on nrf52
#5338: xtimer: xtimer_now() not ISR safe for non-32-bit platforms.
#6052: tests: xtimer_drift gets stuck: application freezes after ~30-200 seconds
#7114: xtimer: add's items to the wrong list if the timer overflows between
       _xtimer_now() and irq_disable()

native related issues
---------------------
#495:  native not float safe: When FPU is used and an asynchronous context
       switch occurs, either the stack gets corrupted or a floating point
       exception occurs.
#6442: cpu/native: timer interrupt does not yield thread

other platform related issues
-----------------------------
#1891: newlib-nano: Printf formatting does not work properly for some numeric
       types: PRI[uxdi]64, PRI[uxdi]8 and float are not parsed in newlib-nano
#4866: not all GPIO driver implementations are thread safe: Due to non-atomic
       operations in the drivers some pin configurations might get lost.
#5848: Arduino: Race condition in sys/arduino/Makefile.include
#6018: nRF52 gnrc 6lowpan ble memory leak
#6261: SAMD21: TC3 & TC4 issue when using TCC2
#6379: nrf52dk/nordic_soft_device: not working anymore
#6437: periph/spi: Leftovers from SPI rework
#6526: atmega based boards freeze when main thread is over
#6836: Issuing a reboot on ATmega328p makes the board loop-reboot
#7753: pic32-wifire: race-condition when linking in concurrent build

other issues
------------
#1263: TLSF implementation contains (a) read-before-write error(s).
#3366: periph/i2c: handle NACK
#4488: Making the newlib thread-safe: When calling puts/printf after
       thread_create(), the CPU hangs for DMA enabled UART drivers.
#5776: make: Predefining CFLAGS are parsed weirdly
#5863: OSX + SAMR21-xpro: shell cannot handle inputs of length >64 chars
#5962: Makefile: UNDEF variable is not working as documented


Acknowledgements
================
We would like to thank all companies (vendors) that provided us with (their)
hardware for porting and testing RIOT-OS. Further thanks go to companies and
institutions that directly sponsored development time. And finally, big thanks
to all of you contributing in so many different ways to make RIOT worthwhile!

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)