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RIOT-2017.01 - Release Notes |
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============================ |
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RIOT is a multi-threading operating system which enables soft real-time capabilities and comes with |
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support for a range of devices that are typically found in the Internet of Things: 8-bit microcontrollers, |
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16-bit microcontrollers and light-weight 32-bit processors. |
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RIOT is based on the following design principles: energy-efficiency, soft real-time capabilities, |
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small memory footprint, modularity, and uniform API access, independent of the underlying hardware |
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(with partial POSIX compliance). |
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RIOT is developed by an international open-source community which is independent of specific vendors |
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(e.g. similarly to the Linux community) and is licensed with a non-viral copyleft license (LGPLv2.1), |
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which allows indirect business models around the free open-source software platform provided by RIOT. |
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About this release: |
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=================== |
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This release provides a lot of new features, fixes and enhancements. Among others these features |
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contain an initial - still experimental - TCP implementation based on the GNRC network stack, support |
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for reading from and writing to SD cards, a new power management architecture as well additional third |
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party packages such as TweetNaCl, a cryptographic library, and Heatshrink a data compression library |
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optimized for embedded real-time systems. |
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We added support for new platforms including the Calliope mini, Maple mini, and a couple of STMs |
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Nucleo boards. Device support was extended by several new drivers, e.g., for NXP PN532 NFC, Microchip |
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MRF24J40 802.15.4 radio (experimental), or Bosch BME280 pressure/humidity/temperature sensor. |
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We completely refactored the SPI interface, allowing for internally handled hardware or software chip |
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select lines and shared bus usage for multiple devices with different SPI configurations. |
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About 278 pull requests with about 606 commits have been merged since the last release and about 84 |
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issues have been solved. 44 people contributed with code in 87 days. 2230 files have been touched with |
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220275 insertions and 159840 deletions. |
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Notations used below: |
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===================== |
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+ means new feature/item |
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* means modified feature/item |
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- means removed feature/item |
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New features and changes |
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======================== |
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General |
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------- |
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+ New power management architecture |
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Core |
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---- |
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+ Initial (experimental) OpenOCD/GDB thread support |
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* Make Semaphore implementation IPC independent |
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API changes |
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----------- |
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* SPI driver interface (rework) |
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* Add Mutex lock with timeout parameter |
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* Xtimer allow for arbitrary frequency & additional convenience functions |
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* HDC1000 driver remodeling |
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* MMA8652 driver remodeling (MMA8x5x now) |
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System libraries |
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---------------- |
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+ Lightweight CRC16 implementation |
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- Remove Twofish and RC5 implementation |
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Networking |
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---------- |
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+ Initial (experimental) GNRC TCP implementation |
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* Provide sock-port for POSIX SOCKETS |
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* Provide sock-port for GCOAP |
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* Provide sock-port for UHCPC |
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* Provide sock_ip wrapper for LWIP |
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* Native: allow for multiple netdev2_tap devices |
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Packages |
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-------- |
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+ TweetNaCl: cryptographic library |
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+ Heatshrink: compression/decompression library |
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- Removed: OpenWSN |
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Platforms |
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--------- |
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+ Support for Maple mini board |
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+ Support for ST Nucleo-32 F303 board |
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+ Support for ST Nucleo-32 F042 board |
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+ Support for Calliope mini board |
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- Drop support for PTTU platform |
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Drivers |
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------- |
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* Rework SPI driver interface |
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+ Peripheral flashrom driver interface |
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+ SD Card driver (SPI) |
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+ NXP PN532 NFC driver |
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+ Initial (experimental) Microchip MRF24J40 radio driver |
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+ JEDEC JC42.4 temperatur sensors |
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+ Bosch BME280 pressure, humidity and temperature sensor |
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* NXP MMA8x5x accelerometer (previously MMA8652) |
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* Unified STM32 RTC driver |
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* Unified STM32 UART driver |
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* Unified STM32 PWM driver |
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* Unified STM32 timer driver |
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* Unified NRF5x low power modes |
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+ Low power modes for the STM32F1 family |
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* Unified Kinetis low power modes |
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* Xbee port to netdev2 API |
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* W5100 port to netdev2 API |
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* NRF5x/'nrfmin' port to netdev2 API (w/o 6LoWPAN support currently) |
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* Refactor synchronous UART by new 'isrpipe' module |
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Build System |
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------------ |
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+ Experimental Jenkins CI |
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* Python3 support for compile script (compile_test.py) |
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Other |
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----- |
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+ UUID module for central ID/address generation |
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Fixed Issues from the last release |
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================================== |
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#4388: POSIX sockets: open socket is bound to a specific thread |
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#4737: cortex-m: Hard fault after a thread exits |
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#4874: Using single RSSI_BASE_VALUE for all Atmel radios |
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#5034: gnrc_networking: offers txtsnd, does not print received packets |
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#5083: AVR8: Reboots after `return 0;` |
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#5719: cc2538: rf driver doesn't handle large packets |
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#5954: nRF52 uart_write gets stuck |
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#6036: tinydtls: DTLS randomly missing functions |
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#6037: pkg/nanocoap: native build fails on macOS |
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#6358: arduino uno : xtimer accuracy problem |
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Known Issues |
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============ |
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Networking related issues |
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------------------------- |
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#3075: nhdp: unnecessary microsecond precision: NHDP works with timer values of microsecond precision |
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which is not required. Changing to lower precision would save some memory. |
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#4048: potential racey memory leak: According to the packet buffer stats, flood-pinging a multicast |
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destination may lead to a memory leak due to a race condition. However, it seems to be a rare |
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case and a completely filled up packet buffer was not observed. |
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#5016: gnrc_rpl: Rejoining RPL instance as root after reboot messes up routing |
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#5230: gnrc ipv6: multicast packets are not dispatched to the upper layers |
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#5656: Possible Weakness with locking in the GNRC network stack: For some operations mutexes to the |
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network interfaces need to get unlocked in the current implementation to not get deadlocked. |
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Recursive mutexes as provided in #5731 might help to solve this problem. |
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#5748: gnrc: nodes crashing with too small packet buffer: A packet buffer of size ~512 B might lead |
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to crashes. The issue describes this for several hundret nodes, but agressive flooding with |
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just two nodes was also shown to lead to this problem. |
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#5858: gnrc: 6lo: potential problem with reassembly of fragments: If one frame gets lost the reassembly |
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state machine might get out of sync |
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#6123: gnrc: crash with (excessive) traffic |
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NDP is not working properly |
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--------------------------- |
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#4499: handle of l2src_len in gnrc_ndp_rtr_sol_handle: Reception of a router solicitation might lead |
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to invalid zero-length link-layer addresses in neighbor cache. |
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#5005: ndp: router advertisement sent with global address: Under some circumstances a router might |
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send RAs with GUAs. While they are ignored on receive (as RFC-4861 specifies), RAs should have |
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link-local addresses and not even be send out this way. |
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#5122: NDP: global unicast address on non-6LBR nodes disappears after a while: Several issues |
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(also see #5760) lead to a global unicast address effectively being banned from the network |
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(disappears from neighbor cache, is not added again) |
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#5467: ipv6 address vanishes when ARO (wrongly) indicates DUP caused by outdated ncache at router |
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#5539: Border Router: packet not forwarded from ethos to interface 6 |
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#5790: ND: Lost of Global IPV6 on node after sending lot of UDP frame from BR |
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Timer related issues |
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-------------------- |
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#4841: xtimer: timer already in the list: Under some conditions an xtimer can end up twice in the |
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internal list of the xtimer module |
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#4902: xtimer: xtimer_set: xtimer_set does not handle integer overflows well |
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#5338: xtimer: xtimer_now() not ISR safe for non-32-bit platforms. |
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#5928: xtimer: usage in board_init() crashes: some boards use the xtimer in there board_init() |
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function. The xtimer is however first initialized in the auto_init module which is executed |
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after board_init() |
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#6052: tests: xtimer_drift gets stuck: xtimer_drift application freezes after ~30-200 seconds |
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#6331: RTC alarm triggered with 1s delay |
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#6419: cpu/cc2538: timer broken |
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#6427: xtimer: infinite loop with xtimer_mutex_lock_timeout |
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#6502: cpu/stm32l1: RTC broken |
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#6542: boards/nucle-f0xx: misconfigured timer configuration (fix in #6494) |
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native related issues |
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--------------------- |
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#495: native not float safe: When the FPU is used when an asynchronous context switch occurs, either |
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the stack gets corrupted or a floating point exception occurs. |
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#2175: ubjson: valgind registers "Invalid write of size 4" in unittests |
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#4590: pkg: building relic with clang fails. |
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#5796: native: tlsf: early malloc will lead to a crash: TLSF needs pools to be initialized (which is |
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currently expected to be done in an application). If a malloc is needed before an application's |
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main started (e.g. driver initialization) the node can crash, since no pool is allocated yet. |
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#6145: native: system reboots on SIGTRAP |
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#6442: cpu/native: timer interrupt does not yield thread |
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other platform related issues |
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----------------------------- |
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#1891: newlib-nano: Printf formatting does not work properly for some numeric types: PRI[uxdi]64, |
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PRI[uxdi]8 and float are not parsed in newlib-nano |
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#2006: cpu/nrf51822: timer callback may be fired too early |
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#2143: unittests: tests-core doesn't compile for all platforms: GCC build-ins were used in the |
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unittests which are not available with msp430-gcc |
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#2300: qemu unittest fails because of a page fault |
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#4512: pkg: tests: RELIC unittests fail on iotlab-m3 |
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#4560: make: clang is more pedantic than gcc oonf_api is not building with clang (partly fixed by #4593) |
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#4694: drivers/lm75a: does not build |
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#4822: kw2xrf: packet loss when packets get fragmented |
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#4876: at86rf2xx: Simultaneous use of different transceiver types is not supported |
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#4954: chronos: compiling with -O0 breaks |
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#4866: not all GPIO driver implementations are thread safe: Due to non-atomic operations in the drivers |
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some pin configurations might get lost. |
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#5009: RIOT is saw-toothing in energy consumption (even when idling) |
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#5103: xtimer: weird behavior of tests/xtimer_drift: xtimer_drift randomly jumps a few seconds on nrf52 |
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#5361: cpu/cc26x0: timer broken |
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#5405: Eratic timings on iotlab-m3 with compression context activated |
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#5460: cpu/samd21: i2c timing with compiler optimization |
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#5486: at86rf2xx: lost interrupts |
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#5489: cpu/lpc11u34: ADC broken |
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#5678: at86rf2xx: failed assertion in _isr |
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#5799: kw2x: 15.4 duplicate transmits |
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#5944: msp430: ipv6_hdr unittests fail |
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#5848: arduino: Race condition in sys/arduino/Makefile.include |
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#6018: nRF52 gnrc 6lowpan ble memory leak |
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#6261: SAMD21 TC3 & TC4 issue when using TCC2 |
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#6379: nrf52dk/nordic_soft_device: not working anymore |
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#6437: periph/spi: Leftovers from SPI rework |
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#6501: boards/nucleo: Pin usage collision (SPI clk vs. LED0) |
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#6526: atmega based boards freeze when main thread is over |
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other issues |
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------------ |
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#1263: TLSF implementation contains (a) read-before-write error(s). |
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#3256: make: Setting constants on compile time doesn't really set them everywhere |
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#3366: periph/i2c: handle NACK |
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#4488: Making the newlib thread-safe: When calling puts/printf after thread_create(), the CPU hangs |
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for DMA enabled uart drivers. |
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#4866: periph: GPIO drivers are not thread safe |
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#5128: make: buildtest breaks when exporting FEATURES_PROVIDED var |
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#5207: make: buildest fails with board dependent application Makefiles |
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#5561: C++11 extensions in header files |
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#5776: make: Predefining CFLAGS are parsed weirdly |
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#5863: OSX + SAMR21-xpro: shell cannot handle command inputs larger than 64 chars |
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#5962: Makefile: UNDEF variable is not working as documented |
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#6022: pkg: build order issue |
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#6451: Wrong value in SRF08 driver |
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#6519: driver/mrf24j40: broken on stm32f4discovery |
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Special Thanks |
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============== |
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We like to give our special thanks to all the companies that provided us with their hardware for |
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porting and testing, namely the people from (in alphabeticalorder): Atmel, Freescale, Imagination |
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Technologies, Nordic, OpenMote, Phytec, SiLabs, UDOO, and Zolertia; and also companies that directly |
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sponsored development time: Cisco Systems, Eistec, Ell-i, Enigeering Spirit, Nordic, OTAkeys and Phytec. |
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More information |
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================ |
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http://www.riot-os.org |
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Mailing lists |
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------------- |
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* RIOT OS kernel developers list |
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devel@riot-os.org (http://lists.riot-os.org/mailman/listinfo/devel) |
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* RIOT OS users list |
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users@riot-os.org (http://lists.riot-os.org/mailman/listinfo/users) |
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* RIOT commits |
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commits@riot-os.org (http://lists.riot-os.org/mailman/listinfo/commits) |
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* Github notifications |
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notifications@riot-os.org (http://lists.riot-os.org/mailman/listinfo/notifications) |
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IRC |
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--- |
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* Join the RIOT IRC channel at: irc.freenode.net, #riot-os |
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License |
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======= |
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* Most of the code developed by the RIOT community is licensed under the GNU Lesser General Public |
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License (LGPL) version 2.1 as published by the Free Software Foundation. |
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* Some external sources are published under a separate, LGPL compatible license |
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(e.g. some files developedby SICS). |
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All code files contain licensing information. |
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RIOT-2016.10 - Release Notes |
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============================ |
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RIOT is a real-time multi-threading operating system that supports a range of |
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PeterKietzmann
6 years ago