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release-notes.txt
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RIOT-2023.01 - 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
==================
We are proud to announce the release of RIOT 2023.01, marking the tenth
anniversary of the project. Over the past decade, RIOT has become a thriving
open-source community, delivering cutting-edge technology for Internet of
Things (IoT) devices. This release builds on top of the hard work and
dedication of our developers, users, and contributors, and we would like to
extend a heartfelt thank you to everyone who has been a part of our journey.
Here's to another decade of innovation and growth!
Noteworthy changes the 2023.01 release includes, among many fixes and little
things:
- ztimer_ondemand: The next step towards seamless and automatic power management.
- The Rust examples now default to stable Rust.
187 pull requests, composed of 570 commits, have been merged since the
last release, and 13 issues have been solved. 37 people contributed with
code in 58 days. 1248 files have been touched with 516544 (+) insertions and
12047 deletions (-).
Notations used below
====================
+ means new feature/item
* means modified feature/item
- means removed feature/item
New features and changes
========================
Core
----
* core/lib: define MAYBE_UNUSED (#18884)
* core/marco: fix DIV_ROUND (#18858)
System Libraries
----------------
+ congure_abe: initial import of TCP Alternative Backoff with ECN for
CongURE (#15968)
+ congure_quic: initial import of QUIC congestion control (#15952)
+ pkg/tinyusb: add common USB descriptors implementation (#18835)
+ sys/bitfield: add bf_find_first_{set, unset}() (#18833)
+ sys/bitfield: add bf_popcnt() (#18879)
+ sys/malloc_tracing: add module to trace dyn memory management (#18912)
+ sys/stdio_uart: add stdio_uart_onlcr (pseudo-) module (#18731)
+ sys/tiny_strerror: add tiny_strerror_minimal (#18768)
+ ztimer: add ztimer_ondemand module for implicit power management (#17607)
* rust: Use stable Rust (#18839)
* suit: start worker thread on demand, make suit_handle_url() public (#18551)
* sys/pm_layered: align pm_blocker_t for speed (#18846)
* sys/print_stack_usage: update MIN_SIZE (#18917)
* sys/shell: drop ping6 alias (#18931)
* sys: preprocessor successor module (#18299)
* tests/pbkdf2: de-flanky-fy test (#18932)
* usbus/hid: fix buffer overflow in hid_io (#18860)
Networking
----------
+ examples/gcoap: add IPv4 support (#17763)
+ gnrc/ipv6_auto_subnets: add CONFIG_GNRC_IPV6_AUTO_SUBNETS_STATIC
option (#17429)
+ gnrc_sixlowpan_frag_sfr: add support for queue-based ECN (#16175)
+ gnrc_sixlowpan_frag_sfr: provide CongURE support (#16156)
+ nanocoap: add support for no-response option (#18154)
+ sys/net/nanocoap: introduce Accept option helper (#18772)
+ sys/net: add Size1 and Size2 option numbers (#18799)
* drivers/at86rf2xx: migrate to ztimer (#18822)
* gnrc: make pseudo-modules explicit + documentation improvements (#18727)
* gnrc_sock_udp: accept response from any address if remote is
multicast (#18854)
* gnrc_udp: use small stack-size (#18709)
* net/nanocoap: remove coap_pkt token ptr (#17983)
* paho: use GNRC instead of lwip (#18982)
* sys/include: remove kernel_defines.h where not needed (#18887)
Packages
--------
* pkg/arduino_sdi_12: bump version, fix patches (#18796)
* pkg/lvgl: bump to 8.3.3 (#18794)
* pkg/tinyusb: support for multiple configuration descriptors (#18983)
* pkg/wamr: Update to WAMR-1.1.1 (#18994)
Boards
------
+ boards/cc1350: add info concerning shell access (#18808)
+ boards/dwm1001: add saul_gpio support (#18818)
+ boards/lora-e5-dev: add arduino feature (#18792)
+ boards/nucleo-l496zg: add ADC support (#18940)
+ boards: add support for EFM32GG12 Thunderboard Kit (SLTB009A) (#18755)
+ cpu/efm32: add periph_adc support for Gecko Series 2 (#18933)
+ cpu/efm32: add periph_uart_modecfg support for Gecko Series 2 (#18946)
+ drivers/usbdev_synopsys_dwc2: add support for internal UTMI HS PHY (#18714)
+ EFM32: add cpu family EFR32ZG23 and board xG23-PK6068A (#18780)
+ pkg/tinyusb: add nrf52 support (#18781)
+ pkg/tinyusb: add STM32 USB FS device driver (#18786)
+ pkg/tinyusb: add ULPI and UTMI+ HS PHY support for STM32 USB OTG HS
ports (#18776)
* boards/blxxxpill-128kib: default to CDC ACM for stdio (#18743)
* boards/common/nrf52: improve default clock config (#18811)
* boards/im880b: refactor code (#18451)
* boards/nucleo-f207zg: support for ADC (#18847)
* boards/nucleo-l* and g*: update doc concerning Vbat (#18984)
* cpu/stm32: Fix stm clock configuration (#18797)
CPU
---
+ cpu/saml21: add interaction with pm_layered for peripheral drivers (#18821)
+ cpu/stm32: add unused backup RAM as extra heap (#18921)
+ debug_irq_disable: add module to debug time spent in irq_disable (#18795)
* boards/native: Remove macOS as native target (#18735)
* cpu/efm32: preparing introduction of Gecko Series 2 (#18764)
* cpu/saml21/pm: allow blocking IDLE mode (#18825)
* cpu/stm32: improvement of USB device driver selection (#18787)
* makefiles/cflags.inc.mk: don't include absolute path in __FILE__
macro (#18913)
* makefiles/gnu.inc.mk: set flags based on compiler version (#18935)
* pkg/gecko_sdk: Bump to version 4.1.2 (#18739)
* pkg/tinyusb: implement stdio via CDC ACM (#18804)
* sam0/rtc_rtt: optimizations to get around the painful long syncwaits (#18920)
* socket_zep: make use of crc16_ccitt_false_update() (#18779)
* treewide: replace RIOT_FILE_RELATIVE with __FILE__ (#18936)
Device Drivers
--------------
+ drivers/at: add a function read a response plus the OK (#18753)
+ matrix_keypad: Add matrix-style keypad module (#18733)
* drivers/at86rf2xx: isolate netdev logic (#18988)
* drivers/sdcard_spi: make use of crc16_ccitt_false_update() (#18778)
Documentation
-------------
* boards/cc13xx_cc26xx: remove broken HTML links and headings in doc (#18809)
* boards/nucleo-l4r5zi: doc improvements (#18747)
* docs/kconfig: "not longer" -> "no longer" typo (#18922)
* pkg/tinyusb: update doc for tusb_app_config.h and common descriptor
handling (#18901)
Build System / Tooling
----------------------
+ .vscode: import initial RIOT-OS style (#18945)
+ build-system: add capability to execute scripts with custom executor (#18770)
+ dist/tools: add "RESET_PIN" value for the dwm1001 (#18815)
+ examples/gnrc_border_router: add option to re-use existing TAP
interface (#18836)
+ makefiles/tools/serial.inc.mk: add support for bootterm (#18749)
+ tapsetup: add --loss & --delay option (#18885)
+ tools/cpy2remed: add support for NOD_xxxx removable media (#18824)
* build system: fix compilation with LLVM (#18845)
* CI: can_fast_ci_build.py unittests fix (#18996)
* dist/tools/pyterm: avoid deprecated .setDaemon (#18754)
* utils/uncrustify: display warning instead of error (#18877)
Kconfig
-------
+ pkg/tinyusb: add Kconfig support for stdio_tinyusb_cdc_acm (#19007)
Examples
--------
* examples/gcoap: replace _parse_endpoint by sock_udp_name2ep (#17870)
* examples/timer_periodic_wakeup: switch to ztimer (#19001)
* examples: Remove macOS references in README (#18850)
Testing
-------
+ tests/pkg_tinyusb*: add a BOARD to make make build (#18888)
* CI: drop obsolete murdock note (#18905)
* CI: update murdock yml (#19022)
* test/unittest: cleanup most vera++ complains (#18807)
* tests/bitarithm_timings: shorten timeout from 5s to 200ms (#18894)
* tests/periph_timer: also test for spurious IRQs (#18963)
* unittests/uri_parser: Rework tests to be more verbose (#18734)
API Changes
-----------
+ nanocoap: add request context to coap_handle_req() (#18816)
Uncategorized
-------------
+ release-notes.txt: add 2022.10 release notes (#18947)
* .drone: Remove unmaintained .drone file (#18832)
* README.md: update CI badge (#18685)
* README.md: update features (#18777)
And 38 minor changes.
Bug fixes (44)
==============
* pkg/tinyusb: add usb_board_reset support (#19006)
* boards/common/blxxxpill: Fix pin conflicts in periph_conf (#18785)
* boards/common/nrf52: fix timer config (#18948)
* boards/dwm1001: use lis2dh12_i2c instead of lis2dh12_spi (#18857)
* bootloaders/riotboot_dfu: fixes including sys/usb/usbus/dfu (#18964)
* core/mbox: fix race condition (#18955)
* cpu/atmega_common/periph_timer: fix spurious IRQs (#18978)
* cpu/efm32/pm: fix blocking EM1 (#18775)
* cpu/efm32/timer_series2: fix interaction with pm_layered (#18814)
* cpu/esp32: set bootloader XTAL frequency configuration to automatic (#18829)
* cpu/esp{32,8266}/periph_timer: allow changing callback or freq (#18971)
* cpu/nrf5x/timer: fix high current consumption in powered off state (#18953)
* cpu/nrf5x/uart: run STOPTX task after finished tx (#18954)
* cpu/nrf5x_common/periph_timer: fix spurious IRQs (#18970)
* cpu/qn908x: use bitarithm_test_and_clear() & fix cb (#18989)
* cpu/stm32/periph_timer: fix spurious IRQs and race conditions (#18969)
* cpu/stm32: fix periph_dma (#18711)
* cpu/stm32: fix RAM_LEN for F427, F429, F437, F439 models (#18919)
* dist/tools/usb-serial: fix exception on missing entries (#19011)
* drivers/atwinc15x0: don't disable interrupts (#18800)
* drivers/ethos: Fix off-by-one bug (#18823)
* drivers/slipdev: fix off-by-one error in _recv() (#18826)
* drivers/usbdev_synopsys_dwc2: small fixes (#18759)
* Fix kconfig mismatch breaking nightlies (#18805)
* gnrc: Fix unused function error when using LLVM (#18852)
* gnrc_sixlowpan: Various hardening fixes (#18817)
* makefiles/libc/picolibc.mk: fix compilation with modern binutils (#18893)
* nanocoap_sock: don't store entire sock in coap_block_request_t (#18827)
* nanocoap_sock: only re-transmit CON messages (#18819)
* pkg/nimble: signal LINK_UP on initialisation (#18979)
* pkg/tinyusb: fix the reset of the USB connection for STM32 boards
without internal D+ pullup (#18992)
* pkg/utensor: fix uninitialized variable (#18862)
* sam0_common: use size_t len for I2C transfers (fixes #19008) (#19009)
* sys/clif: Fixing out of bounds read under certain conditions (#18744)
* sys/net/gnrc/pkt: fix gnrc_pkt_delete() (#18874)
* sys/net/grnc/netreg: avoid freeing wild pointers (#18951)
* sys/stdio_uart: fix undefined behavior (#18774)
* sys/uri_parser: fixing potential out of bounds read when consuming
ports (#19016)
* sys/ztimer: model ztimer_periph_lptimer for Kconfig (#18783)
* test-on-iotlab: several fixes to make it runnable again (#18722)
* tests/congure_abe: reset node before starting terminal (#18769)
* tests/pkg_utensor: increase main threads stack size (#18952)
* tests/shell: fix failure on samr21-xpro (#18891)
* tests: set netdev `event_callback` before calling init (#18745)
* tools/backport_pr: finally fix running outside of repo's root (#18881)
Known issues
============
Network related issues (52)
---------------------------
* 6lo: RIOT does not receive packets from Linux when short_addr is set (#11033)
* [gcoap-dtls] Posting a message yields a stack overflow on the
`samr21-xpro` with ECC (#18292)
* Address registration handling inappropriate (#15867)
* app/netdev: application stops working after receiving frames with
assertion or completely without error (#8271)
* at86rf2xx: Dead lock when sending while receiving (#8242)
* CC2538 RF overlapping PIN usage (#8779)
* cpu/esp8266: Tracking open problems of esp_wifi netdev driver (#10861)
* dist/tools/sliptty/start_network.sh: IPv6 connectivity is broken on
PC (#14689)
* driver/mrf24j40: blocks shell input with auto_init_gnrc_netif (#12943)
* drivers/at86rf215: Incorrect channel number set for subGHz (#15906)
* DTLS examples cannot send message to localhost (#14315)
* Emcute cannot create a double-byte name (#12642)
* ethernet: Missing multicast addr assignment (#13493)
* ethos: fails to respond to first message. (#11988)
* ethos: Unable to choose global source address. (#13745)
* ethos: Unable to handle fragmented IPv6 packets from Linux kernel (#12264)
* examples/cord_ep: Dead lock when (re-)registering in callback
function (#12884)
* examples/gnrc_border_router: esp_wifi crashes on disconnect (#14679)
* Forwarding a packet back to its link layer source should not be
allowed (#5051)
* gcoap example request on tap I/F fails with NIB issue (#8199)
* gcoap: Suspected crosstalk between requests (possible NULL call) (#14390)
* gnrc ipv6: multicast packets are not dispatched to the upper layers (#5230)
* gnrc_border_router stops routing after a while (#16398)
* gnrc_icmpv6_echo: flood-pinging another node leads to leaks in own
packet buffer (#12565)
* gnrc_ipv6: Multicast is not forwarded if routing node listens to the
address (#4527)
* gnrc_netif_pktq leaks memory (#17924)
* gnrc_rpl: missing bounds checks in _parse_options (#16085)
* gnrc_rpl: nib route not updated when topology / DODAG changes (#17327)
* gnrc_rpl: takes unusually long time to start routing packets (#19147)
* gnrc_sock_udp: Possible Race condition on copy in application buffer (#10389)
* gnrc_tcp: gnrc_tcp_recv() never generates -ECONNABORTED (#17896)
* gomach: Resetting netif with cli doesn't return (#10370)
* ieee802154_submac: IPv6 fragmentation broken (#16998)
* LoRaWan node ISR stack overflowed (#14962)
* lwip_sock_tcp / sock_async: received events before calling
sock_accept() are lost due to race condition. (#16303)
* Missing drop implementations in netdev_driver_t::recv (#10410)
* Neighbor Discovery not working after router reboot when using SLAAC (#11038)
* netdev_ieee802154: Mismatch between radio ll address and in memory
address (#10380)
* nrf52: Not able to add global or ULA address to interface (#13280)
* nrfmin: communication not possible after multicast ping with no
interval (#11405)
* ping6 is failing when testing with cc2538dk (#13997)
* pkg/tinydtls: auxiliary data API does not work for async sockets (#16054)
* Possible memory leak in RIOT/build/pkg/ndn-riot/app.c (#15638)
* Riot-os freezes with lwip + enc28j60 + stm32L4 (#13088)
* samr30 xpro doesn't seem to use its radio ok (#12761)
* scan-build errors found during 2019.07 testing (#11852)
* send data with UDP at 10HZ, the program die (#11860)
* stale border router does not get replaced (#12210)
* test/lwip: enabling both, IPv4 and IPv6, results in unexpected
behavior (#18097)
* tests/lwip: does not compile for IPv4 on 6LoWPAN-based boards. (#17162)
* two nodes livelock sending neighbor solicitations back and forth
between each other (#16670)
* xbee: setting PAN ID sometimes fails (#10338)
Timer related issues (9)
------------------------
* cpu/native: timer interrupt issue (#6442)
* misc issues with tests/trickle (#9052)
* MSP430: periph_timer clock config wrong (#8251)
* periph/timer: `timer_set()` underflow safety check (tracking issue) (#13072)
* periph_timer: systematic proportional error in timer_set (#10545)
* saml21 system time vs rtc (#10523)
* Sleep mode for Arduino (#13321)
* stm32_common/periph/rtc: current implementation broken/poor accuracy (#8746)
* sys/newlib: gettimeofday() returns time since boot, not current wall
time. (#9187)
Drivers related issues (16)
---------------------------
* adc is not a ADC-Driver but a analog pin abstraction (#14424)
* at86rf2xx: Simultaneous use of different transceiver types is not
supported (#4876)
* cpu/msp430: GPIO driver doesn't work properly (#9419)
* driver/hts221: Temperature and Humidity readings incorrect (#12445)
* examples/dtls-wolfssl not working on pba-d-01-kw2x (#13527)
* fail to send data to can bus (#12371)
* floats and doubles being used all over the place. (#12045)
* mdt_erase success, but vfs_format resets board (esp32-heltec-
lora32-v2) (#14506)
* periph/spi: Switching between CPOL=0,1 problems on Kinetis with
software CS (#6567)
* periph: GPIO drivers are not thread safe (#4866)
* Potential security and safety race conditions on attached devices (#13444)
* PWM: Single-phase initialization creates flicker (#15121)
* STM32: SPI clock not returning to idle state and generating
additional clock cycles (#11104)
* TCP client cannot send read only data (#16541)
* tests/periph_flashpage: unexpected behavior on nucleo-l4r5zi (#17599)
* Two bugs may lead to NULL dereference. (#15006)
Native related issues (4)
-------------------------
* examples/micropython: floating point exception while testing on
native (#15870)
* native getchar is blocking RIOT (#16834)
* native not float safe (#495)
* native: tlsf: early malloc will lead to a crash (#5796)
Other platforms related issues (15)
-----------------------------------
* Failing tests on FE310 (Hifive1b) (#13086)
* [TRACKING] Fixes for automatic tests of ESP32 boards. (#12763)
* boards/hifive1: flashing issue (#13104)
* Cannot use LLVM with Cortex-M boards (#13390)
* cpu/sam0: flashpage write / read cycle produces different results
depending on code layout in flash (#14929)
* cpu/stm32f1: CPU hangs after wake-up from STOP power mode (#13918)
* esp32-wroom-32: tests/netstats_l2 failing sometimes (#14237)
* gcoap/esp8266: Stack overflow with gcoap example (#13606)
* MPU doesn't work on cortex-m0+ (#14822)
* newlib-nano: Printf formatting does not work properly for some
numeric types (#1891)
* periph_timer: Test coverage & broken on STM32F767ZI (#15072)
* riscv: ISR stack is too small for ENABLE_DEBUG in core files (#16395)
* stm32152re: hardfault when DBGMCU_CR_DBG* bits are set and branch
after __WFI() (#14015)
* stm32f7: Large performance difference between stm32f746 and stm32f767 (#14728)
* sys/riotboot/flashwrite: unaligned write when skipping
`RIOTBOOT_MAGIC` on stm32wb (#15917)
Build system related issues (11)
--------------------------------
* `buildtest` uses wrong build directory (#9742)
* `make -j flash` fails due to missing make dependencies or `make
flash-only` rebuilds the .elf (#16385)
* Build dependencies - processing order issues (#9913)
* build: info-build doesn't work with boards without port set (#15185)
* BUILD_IN_DOCKER ignores USEMODULE (#14504)
* dist/tools/cppcheck/cppchck.sh: errors when running with Cppcheck
1.89 (#12771)
* doxygen: riot.css modified by 'make doc' (#8122)
* macros: RIOT_FILE_RELATIVE printing wrong file name for headers (#4053)
* make: ccache leads to differing binaries (#14264)
* make: use of immediate value of variables before they have their
final value (#8913)
* Tracking: remove harmful use of `export` in make and immediate
evaluation (#10850)
Other issues (44)
-----------------
* [TRACKING] sys/shell refactoring. (#12105)
* _NVIC_SystemReset stuck in infinite loop when calling pm_reboot
through shell after flashing with J-Link (#13044)
* `make term` no longer works with JLinkExe v6.94 (#16022)
* Basic test for periph/rtt introduced in #15431 is incorrect (#15940)
* boards/esp32-wroom-32: tests/mtd_raw flakey (#16130)
* Bug: openocd 0.10.0-6 Ubuntu dies while debugging with -rtos auto (#13285)
* Can't build relic with benchmarks or tests (#12897)
* CC2538DK board docs: broken links (#12889)
* cpu/stm32/periph/rtc overflow error (#16574)
* cpu/stm32: some tests are failing on CM33 (l5, u5) (#17439)
* doc/LOSTANDFOUND: not rendered as expected (#17063)
* edbg: long lines flooded over serial become garbled (#14548)
* examples / tests: LoRa tests fail on platforms that don't support
LoRa (#14520)
* feather-m0: `make flash` reports "device unsupported" (#17722)
* flashing issue on frdm-k64f (#15903)
* frdm-k22f failing tests/periph_flashpage (#17057)
* I2C not working under RIOT with U8G2 pkg (#16381)
* ieee802154_security: Nonce is reused after reboot (#16844)
* lwip: drivers/at86rf2xx/at86rf2xx_netdev.c invalid state during TCP
disconnect (#17209)
* lwip: invalid state transition on ieee802154_submac users (#17208)
* Making the newlib thread-safe (#4488)
* mcuboot: flashes but no output (#17524)
* nanocoap: incomplete response to /.well-known/core request (#10731)
* newlib-nano: Printf formatting does not work properly with `"PRIu8"` (#17083)
* Order of auto_init functions (#13541)
* pkg/tinydtls: Multiple issues (#16108)
* pkg_libhydrogen tests fail / update libhydrogen (#18508)
* Potential race condition in compile_and_test_for_board.py (#12621)
* RIOT is saw-toothing in energy consumption (even when idling) (#5009)
* riotboot/nrf52840dk: flashing slot1 with JLINK fails (#14576)
* riotboot: ECC faults (eg. in STM32L5 or STM32WB) not handled
gracefully (#17874)
* rust-gcoap example is incompatible with littlefs2 (#17817)
* SPI access in LoRa-e5 and im880b? (#19025)
* stdio_ethos: infinite shell loop (#17972)
* sys/riotboot: documentation issues (#11243)
* sys/stdio_uart: dropped data when received at once (#10639)
* tests/cpp11_*: failing on i-nucleo-lrwan1 (#14578)
* tests/lwip target board for python test is hardcoded to native (#6533)
* tests/periph_flashpage: failing on stm32l475ve (#17280)
* tests/pkg_libhydrogen: test fails on master for the samr21-xpro with
LLVM (#15066)
* tests/test_tools: test fails while testing on samr21-xpro/iotlab-m3 (#15888)
* tests: broken with stdio_rtt if auto_init is disabled (#13120)
* tests: some tests don't work with `newlib` lock functions. (#12732)
* Use of multiple CAN bus on compatible boards (#14801)
There are 151 known issues in this release
Fixed Issues since the last release (2022.10)
=============================================
- Race condition in SUIT around threads terminating (#19195)
- socket_zep: fragmentation broken if destination is multicast /
ACK_REQ not set (#19117)
- sam0_sdhc: SDXC cards are not detected / handled properly (#18458)
- semtech_loramac_init blocking (#17907)
- tests/thread_float: crashes on avr-rss2 (#16908)
- esp8266 precompiled bootloaders don't support partitions past 1MB (#16402)
- SIGFPE on native architecture when printing double floats on Ubuntu
21.04 (#16282)
- I found stm32 DMA periph driver bugs! when I tested stm32l431rc
board. (#16242)
- pyterm on stdio_cdc_acm stops working after a few seconds (#16077)
- Unclear how Router Solicitations are (or should be) handled (#15926)
- examples/ccn-lite: floating point exception while testing on native (#15878)
- usb-serial/list-ttys.sh: Broken when a debugger offers multiple
serial ports (#15814)
- tests/pkg_tensorflow-lite: tests randomly failing on nrf52dk and
esp32-wroom-32 (#13133)
13 fixed issues since last release (2022.10)
Acknowledgements
================
We would like to thank all companies that provided us with 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
Matrix and Forum
================
* Join the RIOT Matrix room at: #riot-os:matrix.org
* Join the RIOT Forum at: forum.riot-os.org
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-2022.10 - 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 2022.10 release includes, among many many bug fixes and improvements, the
following prominent contributions:
### Security Fixes
The GNRC network stack has received a number of security fixes. All users of
GNRC are advised to update to the new release. Given that no user facing
breaking API changes are included, we are hopeful that the update is painless
and quickly possible.
### ESP32 family
RIOT has been ported to the ESP32-C3, ESP32-S2, and the ESP32-S3 MCUs. In
addition driver support for the integrated BLE transceiver of the ESP32 MCUs
has been added.
### Major CI Upgrade
While the CI is developed in an independent repository, it is still a noteworthy
change that our CI software, Murdock, was updated since the last release. In
addition to changes under the hood the web front end got a major revamp. You
will directly notice the improvements in page load time and clarity/structure of
the interface. If you haven't already, please check out https://ci.riot-os.org
to take a look.
### Support for Priority Inheritance in `core_mutex`
If a shared resource guarded by a mutex is used by a high priority and a low
priority thread, the high priority thread may end up waiting on the low priority
thread to return the resource. If medium priority threads now interrupt the
low priority thread while working with the shared resource, the high priority
thread ends up waiting on both medium and low priority threads. This effect is
called priority inversion.
Priority inversion can in most cases be solved by carefully assigning priorities
and resources. In some cases however, this cannot be avoided: Let's consider
a scenario in which an I2C temperature sensor and an I2C IMU are used. Since
temperature changes are slow in frequency, the temperature readings are
assigned the lowest priority, while the IMU readings are assigned the highest
priority. The sensible approach here is to have both sensors on distinct I2C
buses. However, if e.g. only a single I2C bus is available by the hardware
priority inversion cannot be prevented by careful resource and priority
assignment alone. In these cases the module `core_mutex_priority_inheritance`
can be used to lend the low priority thread the priority of the high priority
thread while the high priority thread is waiting for the mutex hold by the
low priority thread.
After RIOT has already [been launched into space](https://github.com/thingsat)
it is now ready to for
[Mars](https://www.cs.unc.edu/~anderson/teach/comp790/papers/mars_pathfinder_long_version.html).
### USB Support for STM32F1 MCUs
While RIOT has longstanding USB support for many STM32 MCU families, the F1
family was not supported due to some peculiarities in the memory layout. The
driver has now been extended to handle them correctly. With this, the popular
STM32F103 bluepill board now supports stdio via USB, which however still
has to be manually enabled e.g. by:
```sh
USEMODULE=stdio_cdc_acm BOARD=bluepill make -C examples/default
```
### Support for podman
Just add an `export DOCKER=podman` to your `~/.profile` (or `~/.bashrc`, or ...)
and an `make BUILD_IN_DOCKER=1` will use [podman](https://podman.io/) instead of
docker to run the RIOT build container. Two major advantages of using `podman`
over `docker` is the support of rootless containers and not depending on a
central background daemon.
### Support for Sharing nRF52 combined I2C/SPI Peripherals
The nRF52 MCUs have a limited number of combined I2C/SPI peripherals.
Previously, each such peripheral could either provide a single I2C or a
single SPI bus. A board configuration that used the same combined peripheral
to provide both an SPI and an I2C bus previously resulted in bad surprises at
run-time.
The I2C/SPI drivers have now been reworked so that they can be shared in
round-robin fashion between multiple I2C and SPI buses. This is especially
useful for the upcoming support of the Bangle.js 2 watch that uses more I2C
buses than combined I2C/SPI peripherals available on the used nRF52840 MCU.
Thanks to the sharing of peripherals, all I2C buses can now be provided by a
single peripheral.
### Support for GCC 12.2.0
Many fixes for compilation and runtime issues that only started to surface
with GCC 12.2.0 have been fixed. This allows our users to confidentially choose
the current release with little to no fear that toolchain updates in the near
future will break the precious projects. In addition, we hope that the next
CI update will also cause less friction.
### Release Statistics
312 pull requests, composed of 819 commits, have been merged since the
last release, and 29 issues have been solved. 47 people contributed with
code in 84 days. 1799 files have been touched with 56827 (+) insertions and
108634 deletions (-).
Notations used below
====================
+ means new feature/item
* means modified feature/item
- means removed feature/item
New features and changes
========================
Core
----
+ core/macros: add math helper macros (#17702)
* core/mutex: fix typo in docs (#18605)
* core: implement core_mutex_priority_inheritance (#17040)
* core: Treat stack overflows as an unrecoverable error (#18448)
System Libraries
----------------
+ doc: add deprecation notice on deprecated pseudo-modules (#18698)
+ event_periodic_callback: add convenience wrapper for periodic
callbacks (#18598)
+ shell/cord_ep: Add user guidance & prevent accidental crash (#18053)
+ sys/bhp_*: add initial support for generic Bottom Half Processor (#18435)
+ sys/bhp_msg: add IPC based implementation of Bottom Half Processor (#18464)
+ sys/checksum: add CRC-16 implementation without lookup table (#18701)
+ sys/checksum: add CRC-32 checksum (#18686)
+ sys/checksum: Adding three new crc16 variations (#18516)
+ sys/string_utils: add strscpy() (#18621)
+ sys/ztimer: add LPTIMER auto init (#17654)
+ vfs: introduce vfs_format_by_path() (#18447)
* doccheck: make the file pattern more match riot.doxyfile (#18431)
* event_periodic_callback: remove unnecessary dependency (#18610)
* fmt: unify and align wording regarding characters, digits, and bytes (#18315)
* littlefs: make block size configurable at compile time (#18141)
* makefiles/tools/serial.inc.mk: Improve PORT selection when RIOT's USB
CDC ACM is used for stdio (#18525)
* makefiles: Rust fixes and info extensions (#18630)
* rust: Update dependencies (#18642)
* rust: Update dependencies, build and test more on stable (#18678)
* security: Reference CPE used for RIOT (#18574)
* suit: rename worker thread functions (#18549)
* sys/shell/vfs: make output of vfs df human readable (#18550)
* USBUS/cdc_ecm: register with netdev (#18603)
* vfs: drop unused abs_path parameter (#18672)
Networking
----------
+ dns: provide generic dns_query() function (#18378)
+ gcoap/fileserver: add file and directory creation and deletion (#18133)
+ gcoap: add remote sock_udp_ep_t to coap_request_ctx_t (#18519)
+ gcoap_dns: Add DNS cache support (#18329)
+ gnrc/lorawan: add basic LoRaWAN 1.1 features (#17884)
+ gnrc_netif_lorawan: add support for LINK_UP/_DOWN events (#18699)
+ nanocoap_sock: add nanocoap_sock_put() (#18514)
+ net/gnrc_netif: add support for priority queues (#18496)
+ net/sock/dtls: introduce sock_dtls_sendv_aux() (#18363)
+ pkg/lwip: add support for HAL radios that require IRQ offloading (#18465)
+ sock_dodtls: Initial import of a DNS over DTLS client (#16861)
+ sys/net/gnrc_netif: Make use of confirm send (#18139)
+ sys/net/network_layer/ipv4/addr: add ipv4_addr_print function (#18694)
+ sys/shell: ncput: add option to read from stdin (#18639)
+ sys/uri_parser: Adding the port as uint16_t (#18096)
* codespell: fix remaining issues (#18604)
* dhcpv6: don't treat zero option as an end-of-payload marker (#18625)
* gcoap: accept resources in any order (#18651)
* gcoap: Forego IP address comparison in memo finding of multicasts (#17978)
* gcoap: move tl_type to coap_request_ctx_t (#18313)
* gcoap_dns: implement Max-Age-based TTL calculation (#18443)
* gcoap_forward_proxy: send empty ACK when response takes too long (#18386)
* gnrc_ipv6_nib: handle iface_up/iface_down in IPv6 thread (#18708)
* pkg/lwip: fix netdev concurrency issues (#18479)
* pkg/nimble: Replace double quotes with single quotes for two CFLAGS (#18376)
* pkg/nimble:derive peer address type from peer address (#18474)
* sock_dns_cache: move to dns_cache (#18318)
* sys/net: include misplacement inside linkage-specification (#18587)
* treewide: s/gnrc_pktbuf_cmd/shell_cmd_gnrc_pktbuf/ (#18640)
Packages
--------
+ Add package tiny-vcdiff (#17797)
* pkg/cryptoauthlib: Pass ATCA_NO_HEAP Flag to library (#18705)
+ pkg/esp32_sdk: additional patches required for ESP32-C3 (#18339)
+ pkg/esp32_sdk: additional patches required for ESP32-S3 (#18408)
* lvgl/contrib: allow for SDL display driver height/width to be
adjusted (#18463)
* pkg/libhydrogen: bump version (#18564)
* pkg/lvgl: bump version to 8.3.1 (#18366)
* pkg/nanocbor: bump version (#18543)
* pkg/tinydtls: bump version (#18368)
* remove version comment fixing build issue (#18489)
+ pkg/tinyusb: add tinyUSB as package (#18592)
Boards
------
+ boards/nucleo-f446ze: add support for ADC (#18647)
+ boards/nucleo-f767zi: add PWM config (#18393)
+ boards/samr21-xpro: add a note about EDBG UART limitation (#18567)
+ boards/stm32f746g-disco: add LD1 as LED0 definition (#18673)
+ boards: add support for the Waveshare nRF52840 Eval Kit (#13860)
+ cpu/esp32: add support for ESP32-C3 (#18345)
+ cpu/esp32: add support for ESP32-S2 (#18506)
+ cpu/esp32: add support for ESP32-S3 (#18421)
+ cpu/stm32/periph/usbdev_fs: add support for STM32F3 family (#18680)
+ drivers/usbdev_synopsys_dwc2: add USB OTG HS peripheral support for
external ULPI HS PHYs (#18679)
+ drivers: add driver for Synopsys DWC2 that is used as USB OTG
peripheral on STM32 and ESP32x SoCs (#18644)
+ pkg/tinyusb: add support for SAM0-based boards (#18689)
* boards/blxxxpill: configure usbdev_fs (#17812)
* boards/common/stm32: clean up LED definitions (#18415)
* boards/nucleo-l4r5zi: support for ADC (#18676)
* boards/remote-revb: define default MTD device (#18611)
* boards/samr34-xpro: configure SPI NOR flash (#18492)
* cpu/atxmega: fix building with avr-libc 2.1.0 (#18626)
* cpu/esp32: use CPU_FAM and CPU_ARCH for ESP32x SoC variant dependent
compilation (#18316)
* cpu/mips: Remove all mips (#18562)
* cpu/{esp8266,esp32}: cleanup of SPI Flash configuration (#18387)
* doc: fix unbalaced grouping (#18444)
CPU
---
+ cpu/avr8_common: add strings.h for compatibility (#18623)
+ cpu/esp32: add Bluetooth LE and NimBLE host support (#18439)
+ cpu/esp32: add ESP32-C3 support in makefiles (#18341)
+ cpu/esp32: add ESP32-S2 support to makefiles (#18503)
+ cpu/esp32: add ESP32-S3 support to makefiles (#18410)
+ cpu/esp32: add linker scripts for ESP32-C3 (#18340)
+ cpu/esp32: add linker scripts for ESP32-S2 (#18509)
+ cpu/esp32: add linker scripts for ESP32-S3 (#18409)
+ cpu/esp32: add platform code for RISC-V based ESP32x SoCs (#18260)
+ cpu/esp32: add some sanity checks in peripheral drivers (#18332)
+ cpu/esp32: enable BLE and NimBLE host support for ESP32-S3 (#18517)
+ cpu/esp32: extend file names of CPU specific files by CPU family (#18326)
+ cpu/esp32: implement periph/gpio_ll and periph/gpio_ll_irq (#17442)
+ cpu/esp32: split cpu_conf.h into ESP32x common and ESP32 specific
parts (#18323)
+ cpu/esp32: split periph_cpu.h into ESP32x common and ESP32 specific
parts (#18324)
+ cpu/esp32: split sdkconfig.h into ESP32x common and ESP32 specific
parts (#18322)
+ cpu/sam0_common: adc: add support for differential mode (#18146)
+ cpu/stm32/periph_eth: Add stm32_eth_tracing (#18418)
+ pkg/nimble: add feature ble_adv_ext and cleanup ble_* features (#18449)
+ sys/tiny_strerror: add tiny `strerror()` implementation (#18571)
* core/mutex: clean up (#18619)
* cpu/cortexm: clear FPU state in `cpu_switch_context_exit()` (#18697)
* cpu/esp*: cleanups mainly to reduce the vera++ warnings (#18333)
* cpu/esp32: cleanup of esp_log_write (#18335)
* cpu/esp32: enable BLE and NimBLE host support for ESP32-C3 (#18510)
* cpu/esp32: extend GPIO wake-up from deep sleep (#18405)
* cpu/esp32: implement periph_spi_reconfigure (#18710)
* cpu/esp32: make esp_hw_counter feature dependent on ESP32x SoC family (#18317)
* cpu/esp32: move common ESP-IDF configurations to common files (#18406)
* cpu/esp32: move linker scripts to a ESP32x variant specific directory (#18325)
* cpu/esp: improve thread safety in newlib locking functions (#18544)
* cpu/esp_common: MODULE_XTENSA has to depend on HAS_ARCH_ESP_XTENSA (#18319)
* cpu/native: get mtd size from file size (#18669)
* cpu/nrf5x: allow multiple I2C and SPI buses on a shared periph (#18478)
* cpu/sam0/timer: supply all clocks before accessing any regs (#18527)
* cpu/sam0_common: spi: limit clock to source clock (#18223)
* cpu/stm32/periph/usbdev_fs: support for STM32F1 family (#18729)
* cpu/stm32/periph_eth: optimize IRQ handler (#18417)
* cpu: cpu_print_last_instruction() -> cpu_get_caller_pc() (#18226)
* cpu: make use of `cortexm.ld` (#18636)
* gnrc_netif: handle NETDEV_EVENT_LINK_UP/DOWN events (#17893)
* pkg/lwip: Set netdev callback before driver init (#18548)
* socket_zep: ignore packets sent on the wrong radio channel (#18594)
* sys/net/gnrc/netif: allow checking if a netdev is legacy or new API (#18426)
* treewide: Ubuntu jammy build fixes (#18652)
Device Drivers
--------------
* drivers/wx281x: fix DEBUG format string for ESP32x SoCs (#18336)
* usbdev_synopsys_dwc2: Mask RX FIFO irq when using DMA (#18726)
Documentation
-------------
+ cpu/esp32: add ESP32-S2 support in documentation (#18505)
+ cpu/esp32: add ESP32-S3 support to documentation (#18412)
+ cpu/esp32: split the doc into ESP32x common and ESP32 specific parts (#18321)
+ cpu/esp32: update documentation for ESP32-C3 (#18350)
+ doc: Add high-level documentation on flashing boards (#18455)
* boards/nucleo64: doc update - usage of cpy2remed programmer and short
board overview (#18419)
* boards/remote-revb: fix pinout image in doc.txt (#18615)
* dist/tools/edbg: bump version (and update SAML11 documentation) (#18384)
* doc/doxygen: use DuckDuckGo for search (#18358)
* doc: change protocol for git clone in docs (#18531)
* gnrc/ipv6_auto_subnets: improve documentation about subnet generation
and RIO (#18398)
* tests/doc: some additions and reorganization of doc page (#18190)
Build System / Tooling
----------------------
+ Add podman support (#18671)
+ codespell: add false positives for v2.2.1 (#18675)
+ dist/tools/esptools: add ESP32-C3 toolchain (#18337)
+ dist/tools/esptools: add ESP32-S2 toolchain support to
{install,export}.sh (#18502)
+ dist/tools/esptools: add ESP32-S3 toolchain support to
{install,export}.sh (#18407)
+ dist/tools/esptools: add macOS support to install/export scripts (#18385)
+ dist/tools: add DOSE Linux tool (#18163)
+ makefiles/tools/dfu-util: add option to pass DFU_SERIAL id (#18521)
+ makefiles: Add openocd-rtt (#18526)
+ tools/openocd: add generic FTDI adapter (#18628)
+ tools/zep_dispatch: add Wireshark capture support (via
mac802154_hwsim) (#18230)
* .circleci: remove directory (#18674)
* dist/tools/suit: encrypt an existing key (#18499)
* doccheck: remove exclude_patterns not needed (#18597)
* makefiles/arch/avr8.inc.mk: Fix compilation with GCC 12.2.0 (#18533)
* makefiles/boards/stm32.inc.mk: improve stm32flash support (#18452)
* makefiles: Select suitable terminal when stdio_rtt is used (#18528)
* pseudomodules: document gnrc_netif_cmd_lora as deprecated (#18706)
Kconfig
-------
+ cpu/esp32: add ESP32-S2 support in Kconfig (#18504)
+ cpu/esp32: add ESP32-S3 support in Kconfig (#18411)
+ cpu/esp32: split Kconfig into ESP32x common and ESP32 specific parts (#18320)
+ drivers: model IEEE 802.15.4 devices in Kconfig (#17789)
+ drivers: model kconfig for Ethernet drivers (#17739)
+ Kconfig/ieee802154: fix typo in HAL selector and add missing radios (#18430)
* .murdock: disable hash checks of kconfig/make (#18423)
* cpu/esp_{common,32,8266}: improve Kconfig submenu structure (#18314)
* drivers/kw2xrd/Kconfig: fix kconfig model (#18497)
* Fix kconfig models breaking nightlies (#18718)
Examples
--------
+ examples/gcoap_dtls: Add coap-client example (#18660)
* examples/filesystem: drop manual mounts (#18495)
* examples: Move in RIOT/applications (#18602)
Testing
-------
+ .murdock.yml: Add preview link to documentation to comment (#18677)
+ release-tests: add capability to run on PR comment (#18713)
+ Revert "release-tests: add capability to run on PR comment" (#18736)
+ tests/external_boards: add esp32c3-ci board for optional modules (#18404)
+ tests/external_boards: add esp32s2-ci board for optional modules (#18507)
+ tests/external_boards: add esp32s3-ci board for optional modules (#18422)
+ tests/gcoap_fileserver: add integration test for GCoAP fileserver (#18199)
* CI: improve makefile broken handling (#18595)
* ci: teach github-labeler about .murdock.yml (#18666)
* gh-actions: move actions/checkout to main (#18730)
* murdock: honour RUN_TESTS setting (#18546)
* murdock: make available boards instance dependent (#18659)
* riotctrl_shell.cord_ep: remove regif parameter (#18716)
* tests/ieee802154_*: fix tx_done handler on ACK_TIMEOUT and improve
tests (#18382)
* tests/periph_gpio_ll: drop core dump merged by accident (#18541)
* tests/periph_timer_short_relative_set: clarify outcome (#18513)
* tests/pkg_lvgl_touch: randomize button position on click (#18481)
* tests/pkg_tinyvcdiff: Initialize mtd->write_size (#18529)
* tests/thread_priority_inversion: blacklist esp32 (#18535)
* tests/ztimer_periodic: improve output and relax on native (#18491)
* tests/{periph_gpio_ll,pkg_fff}: change CPU_FAM to MCU for ESP32x SoCs (#18356)
API Changes
-----------
+ drivers/kw2xrf: add support for IEEE 802.15.4 Radio HAL (#18383)
- Applications using the proper network stack APIs (such as the SOCK API or
POSIX sockets) will not notice any chances, except for e.g. the better
packet reception rate
+ sys/shell: make cmds submodules and add KConfig modeling (#18355)
- Shell commands can now be individually selected by using the corresponding
`shell_cmd_<name>` module. What previously was called `shell_commands` now
is `shell_cmds_default` and will automagically select shell commands based
on the set of modules used. Users can keep using `shell_commands` for now,
but the build system will inform them that `shell_commands` is deprecated.
* cpu/sam0_common: adc: drop pin from adc_conf_chan_t (#18658)
- Application developers will not have to change their code. However, out of
tree SAM0 boards that contain an ADC configuration will need to remove the
`.pin` member and rename the existing `.muxpos` member to `.inputctrl`
* hashes_cmac: rename to hashes_aes128_cmac (#18539)
- Existing C call sides will continue to work due to compatibility wrappers.
However, applications should migrate before the deprecated wrappers are
dropped.
* nanocoap_sock: constify remote (#18588)
- This will not break any existing C call sides
* gnrc_netreg: Use locks around netreg (#18740)
- calls to `gnrc_netreg_lookup()` and `gnrc_netreg_getnext()` now need to be
guarded
* sys/hash/pbkdf2: Accept passwd as `void *` instead of `uint8_t *` (#18941)
- This is not breaking any existing C call sides, but new code no longer
needs to cast `char *` to `uint8_t *`
Uncategorized
-------------
+ .murdock.yml: add footer comment about production stage (#18667)
+ .murdock.yml: add new Murdock configuration (#18084)
+ pkg/lwip: add missing initialization for async_cb (#18693)
* bootloader/riotboot_dfu: move ztimer_init() prior to usbus start (#18538)
* murdock: fix bors branch name (testing -> trying) (#18665)
* Release notes 2022.07 (#18512)
And 40 minor changes.
Deprecations
============
- The module `shell_commands` is now deprecated. User should use
`shell_cmds_default`. For now, `shell_commands` is an alias of
`shell_cmds_default`
- Shell commands that were individually selectable even before this release were
renamed to match the pattern `shell_cmd_<name>`, while they previously where
often called `<name>_cmd`. The previous names are aliases of the new names
and the build system will list any deprecated modules used.
- Users of `hashes_cmac` should update to `hashes_aes128_cmac` before the legacy
wrappers now in place for backward compatibility will be removed.
Bug fixes (107)
==============
* .murdock: Fix kconfig hash check (#18364)
* asymcute: Compare request message type when matching acknowledgement (#18434)
* asymcute: fix one byte out-of-bounds access in _len_get (#18433)
* boards/common/stm32: Fix LED configuration (#18568)