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release-notes.txt
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RIOT-2024.07 "StrikinglyCrowded" - 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 2024.07 release, nicknamed "StrikinglyCrowded", includes many features and bug fixes.
Here are some of the highlights:
+ RIOT now boots on the Arduino Nano 33 BLE Sense (#20668)
+ To support boards with Ethernet plugs such as the Adafruit Ethernet FeatherWing, RIOT now ships a driver for the W5500 ethernet chip (#20301)
+ RIOT now leverages the ARMv8-M hardware support to enforce the stack size (#20633)
+ The PSA Crypto API implementation in RIOT now supports persistent key storage and additional hashing algorithms (#20099, #20598, #20698)
+ This release features several useful additions to the RIOT CoAP stacks: a coaps forward proxy for gcoap, delayed responses for nanocoap_sock, and the ability to mount a remote filesystem over CoAP (#20454, #20266, #20687)
* Support of the 16-bit MSP430 MCU has been improving over the last few releases, with the addition of power management in this release as an example (#20613)
* First steps towards enabling RIOT support of new Microchip SAM MCUs (#20708, #20710, #20713, #20714)
* Compiling with `BUILD_IN_DOCKER=1` will now by default use the exact container version the code was tested in the CI, fetching it from upstream if not locally present. (#20472)
175 pull requests, composed of 358 commits, have been merged since the
last release, and 5 issues have been solved. 36 people contributed with
code in 80 days. 650 files have been touched with 88156 (+) insertions and
3949 deletions (-).
Notations used below
====================
+ means new feature/item
* means modified feature/item
- means removed feature/item
New features and changes
========================
Core
----
* core/assert: halt running thread instead of panic (#20627)
* core/lib/assert: consistify output and cleanup documentation (#20701)
* core/panic: make reboot on panic configurable (#20630)
* core/thread: "fix" valgrind errors in thread_measure_stack_free() (#20726)
System Libraries
----------------
+ sys/event.h: Fixed documentation error by adding a type cast. (#20704)
+ sys/shell: add support for running a batch of commands from a file (#20651)
* rust: bump rust-riot-{sys,wrappers} version (#20786)
* shell/vfs: Handle print failure in genfile cmd gracefully (#20595)
* sys/hashes: change SHA2 PAD type to const (#20729)
* sys/psa_crypto: ed25519 private key {ex,im}port (#20334)
* sys/psa_crypto: Implement persistent key storage (#20099)
* sys/psa_crypto: remove keysize determination from Kconfig files (#20674)
* sys/psa_crypto: SHA-{384,512/{224,256}} (#20598)
* sys/psa_crypto: sha3 support (#20698)
* sys/shell: Update cryptoauthlib shell commands (#20673)
* sys/vfs: use atomic_utils rather C11 atomics (#20513)
Networking
----------
+ gcoap: add coaps forward proxy (#20454)
+ gnrc, nanocoap: add optional work-arounds for buggy CoAP servers (#20564)
+ nanocoap_fs: add nanoCoAP as VFS backend (remote CoAP fs) (#20687)
+ nanocoap_sock: add nanocoap_get_blockwise_to_buf() (#20690)
+ nanocoap_sock: implement separate response (#20266)
* driver/w5500: driver for the W5500 ethernet chip (#20301)
* examples/gcoap: take full URI as input (#20554)
* gnrc/ipv6: Check for overflow (#20771)
* l2filter: mark module and related netopt options as experimental (#20634)
* pkg/lwip: use sys/event for handling ISR and bhp (#18359)
Packages
--------
+ pkg/tflite-micro: add proper options to flatc (#20703)
+ pkg/wakaama: implement IPSO sensor objects in LwM2M (#20652)
+ pkg/wamr: Added support for THUMB_VFP in wamr Makefile (#20628)
* Makefile.include: creation of CACHEDIR.TAG as a dependency of pkg-
prepare (#20689)
* pkg/littlefs2: bump to v2.9.2 (#20591)
* pkg/tflite-micro: Update tflite-micro to latest version. requires
update of pkg/flatbuffers as well. (#20683)
* pkg/wamr: updated package to WAMR 1.3.3 (#20691)
Boards
------
+ boards/arduino-nano-33-ble-sense: add support for arduino-
nano-33-ble-sense (#20668)
+ boards/b-l072z-lrwan1: add missing adc feature (#20733)
+ boards/nucleo-f303ze: add pinout (#20717)
+ boards/nucleo-l452re: add ADC (#20778)
+ boards/sodaq-sara-sff: add status pin for SARA (#20279)
+ cpu/stm32: add ADC support for WB55 (#20773)
+ drivers/led: add LED_NUMOF and convenience inline functions (#20783)
+ drivers/ws281x: Add saul support (#20562)
* boards/common/stm32: simplify ifdef logic (#20617)
* boards/nRF52xx: correctly set JLINK_DEVICE (#20599)
* boards/nucleo-l476rg & stm32l476g-disco: fix MCU table (#20751)
* boards/stm32l0538-disco: enable cpy2remed (#20766)
* boards/stm32l476g-disco: enable cpy2remed (#20734)
* build system: clean up netif features (#20700)
* cpu/{gd32v,stm32}/periph/adc: make ADC clock setable (#19630)
CPU
---
+ cpu/cortexm: add stack limit support for Cortex-M33 (#20633)
* cpu/cortexm: rework bkpt instruction call on panic (#20616)
* cpu/cortexm_common: print last active thread on stack corruption (#20709)
* cpu/esp: Handle format print errors (#20596)
* cpu/msp430: implement power management (#20613)
* cpu/nrf5x: implement pm_off() for nRF53/9160 (#20590)
* cpu/nrf5x_common: fix ztimer issue on warm-boot (#20665)
* cpu/nrf5x_common: properly calibrate RC-based low-frequency clock (#20669)
* cpu/sam0: Remove deprecated muxpos (#20525)
* cpu/sam0_common: avoid bitfield usage (#20747)
* cpu/samd21: avoid the use of bitfield (#20713)
* cpu/samd5x: avoid the use of bitfields (#20714)
* cpu/samd5x: handle CAN errors (#20667)
* cpu/saml1x: avoid the use of bitfield in register calls (#20710)
* cpu/saml21: avoid the use of bitfield in register call (#20708)
* cpu/stm32/periph/stm32_eth: provide confirm_send (#18428)
* cpu/stm32: de-duplicate ifdefs (#20609)
* periph/flashpage: remove deprecated flashpage_*_free functions (#18093)
* pkg/lwip: make use of confirm send (#18427)
* Remove extraneous bitwise assignment operation on NRF5X_common gpio.c (#20737)
* sam0_eth: implement .confirm_send() to fix fragmented sending (#20666)
* tree wide: compilation fixes for `native64` on musl systems (#20730)
Device Drivers
--------------
+ drivers/at24cxxx: Add M24C01 device and enhance documentation (#20588)
+ drivers/led: add LEDX_IS_PRESENT defines (#20637)
+ drivers/mtd: Add check for integer overflow (#20587)
+ Drivers: add MAX31855 thermocouple-to-digital converter (#20741)
* drivers/at86rf215: port to new netdev API (#20672)
* drivers/at: expose some internal API (#20702)
Documentation
-------------
+ boards/nucleo-c031c6: add pinout to doc (#20657)
+ boards/nucleo-l452re: add pinout to doc page (#20678)
+ boards/nucleo-l4r5zi and l496zg: add pinout to documentation page (#20707)
+ boards/nucleo144: add pinout diagrams to boards documentation (#20614)
+ doc/getting-started: add hint for correct access rights on serial
device (#20600)
+ doc/terminals: add putty and sort terminals (#20611)
* /README.md: match doc (#20740)
* boards/doc: Adafruit Feather nRF52840 Sense is popular (#20597)
* boards/nucleo-f429zi & f439zi: documentation improvements (#20594)
* boards/nucleo-f722ze: doc update (#20671)
* boards/stm32l0538-disco: doc improvements (#20767)
* boards: Update SAM0-based documentation (#20621)
* doc: fix links to GNRC master thesis (#20785)
* doc/doxygen: remove default value for search form (#20681)
Build System / Tooling
----------------------
+ .editorconfig: add EditorConfig (#20746)
+ pkg: Add script to check third party package version (#20662)
+ tools/dhcpv6-pd_ia: fix: Add explicit subnet id (#20776)
* dist/tools/buildsystem_sanity_check: make shellcheck happy (#20721)
* dist/tools/tapsetup: make compatible with doas (#20712)
* Makefile.include: place compile_commands.json by rule target (#20716)
* makefiles/docker.inc.mk: Pin riotbuild version with BUILD_IN_DOCKER=1 (#20472)
* makefiles/docker: prevent recursive docker invocation (#20638)
* makefiles/tools/serial.inc.mk: make use of pyterm session names (#20121)
* makesfiles/jlink: fix exports for flashing (#20779)
* tree-wide: Introduce netif feature and use it (#20682)
Examples
--------
* examples/psa_crypto: pass environment variable down to docker (#20663)
Testing
-------
+ tests/drivers/at: add check if device is initialized before sending
command (#20140)
* check-labels.yml: bump to v1.1.2 (#20727)
* ci: disable esp32-wroom-32 tests (#20715)
* release-tests.yaml: remove (always failing) matrix notification (#20742)
* test/sys/progress_bar: temporary printout to debug flaky test (#20763)
* tests/drivers/pn532: fix init error handling and increase verbosity (#20750)
* tests/sys/progress_bar: move configuration to app.config (#20764)
* tests/sys/progress_bar: remove debug print (#20768)
* tests/sys/psa_crypto*: remove test symlinks (#20545)
* tests/sys/psa_crypto: increase timeout (#20612)
* tests/sys/psa_crypto: test interleaved hash operations (#20606)
* tests/sys/psa_crypto_ecdsa: fix stacksize determination (#20760)
API Changes
-----------
* build system: rename ethernet feature into netif_ethernet (#20694)
* cpu/native: fix build with musl (#18942)
* pkg/monocypher: bump to 4.0.2 (#20670)
And 32 minor changes.
Deprecations (1)
================
* boards/waspmote-pro: deprecate board (#20649)
Bug fixes (22)
==============
* build system: add netif_openwsn feature (#20695)
* makefiles: add OPENOCD_DEBUG_ADAPTER and SLOT_AUX_LEN to riotboot
build environment (#20752)
* cpu/esp*: fix compilation with GCC 14.1.0 (#20719)
* cpu/esp32/gpio_ll: fix & cleanup (#20635)
* cpu/samd5x/can: fix flag handling on receive (#20644)
* cpu/stm32-L4: fix ADC initialization (#20756)
* dist/tools/bmp: fix target parsing (#20661)
* drivers/periph_wdt: fix auto starting of watchdog timer (#20755)
* drivers/w5500: fix W5500 link up/down events in interrupt mode (#20728)
* gcoap: propagate local tx aux to gcoap_req_send() and in
_handler_req() (#20711)
* measure_stack_free_internal(): don't try to align end of stack (#20723)
* nanocoap sock: stop retransmissions after empty ACK (#20697)
* nanocoap/sock: fix state handling for mismatching message ID in
`nanocoap_sock_request_cb()` (#20725)
* nanocoap_link_format: don't drop characters in fragmented entries (#20655)
* nib: some fixes when a router or a prefix is deleted (#20329)
* pkg/lwext4: Minor string fixes (#20586)
* pkg/micro-ecc/psa_uecc: convert between SEC 1 and micro-ecc public
key formats (#20676)
* sys/crypto: fix OCB mode (#20745)
* sys/net/grnc: fix NULL ptr dereferencing (#20660)
* sys/psa_crypto: correct use of (ECDSA) key_bits (#20607)
* sys/random: fix SHAxPRNG init_by_array (#20718)
* sys/ztimer64: fix build when PRIu64 is not defined (#20693)
Known issues
============
Network related issues (57)
---------------------------
* 6lo: RIOT does not receive packets from Linux when short_addr is set (#11033)
* 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)
* cpu/esp8266: Tracking open problems of esp_wifi netdev driver (#10861)
* DHCPv6 client: Handling of NotOnLink incorrect (#20349)
* dist/tools/sliptty/start_network.sh: IPv6 connectivity is broken on
PC (#14689)
* dns_msg_parse_reply() fails for response from DNS64 service (#20355)
* 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 handle fragmented IPv6 packets from Linux kernel (#12264)
* example/gnrc_border_router cannot answer after some time (#19578)
* 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)
* gcoap_fileserver: can't deal with 16 byte block size (#20686)
* Global IPv6 addresses remain deprecated after receiving RA (#19846)
* gnrc ipv6: multicast packets are not dispatched to the upper layers (#5230)
* gnrc/ipv6: "invalid payload length" - corrupted IPv6 header when
ENABLE_DEBUG=1 in mbox.c (#20390)
* gnrc_border_router stops routing after a while (#16398)
* gnrc_border_router: Kconfig and C disagree about number of addresses
per interface (#19947)
* 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: old routes are not deleted (#19423)
* 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 TCP Communication Error (#19676)
* 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)
* pkg/tinydtls: DTLS handshake does not work (#19595)
* Removing a TNT global address then adding a new one does not work (#20318)
* samr30 xpro doesn't seem to use its radio ok (#12761)
* scan-build errors found during 2019.07 testing (#11852)
* 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 (7)
------------------------
* 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)
* 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 (11)
---------------------------
* at86rf2xx: Simultaneous use of different transceiver types is not
supported (#4876)
* cpu/msp430: GPIO driver doesn't work properly (#9419)
* examples/dtls-wolfssl not working on pba-d-01-kw2x (#13527)
* fail to send data to can bus (#12371)
* 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)
* 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)
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 (13)
-----------------------------------
* Failing tests on FE310 (Hifive1b) (#13086)
* [TRACKING] Fixes for automatic tests of ESP32 boards. (#12763)
* boards/hifive1: flashing issue (#13104)
* cpu/sam0: flashpage write / read cycle produces different results
depending on code layout in flash (#14929)
* esp32-wroom-32: tests/netstats_l2 failing sometimes (#14237)
* examples/gnrc_border_router: esp_wifi_init failed with return value
257 on ESP32-C3 with nimble_rpble (#19319)
* gcoap/esp8266: Stack overflow with gcoap example (#13606)
* Interrupt callback function is instantly called on samd51 after
setting it from within interrupt callback function (#19861)
* 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)
* stm32f7: Large performance difference between stm32f746 and stm32f767 (#14728)
Build system related issues (6)
-------------------------------
* `buildtest` uses wrong build directory (#9742)
* Build dependencies - processing order issues (#9913)
* dist/tools/cppcheck/cppchck.sh: errors when running with Cppcheck
1.89 (#12771)
* EXTERNAL_MODULE_DIRS silently ignores non-existent entries (#17696)
* make: ccache leads to differing binaries (#14264)
* make: use of immediate value of variables before they have their
final value (#8913)
Other issues (68)
-----------------
* 2023.04 release bug tracking (#19469)
* [tracking] Bugs found by the peripheral selftest (#20071)
* [Tracking] Fix failures of test-on-iotlab (#20791)
* [TRACKING] sys/shell refactoring. (#12105)
* [tracking] unnecessary use of floating point arithmetic (#19614)
* _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)
* at86rf215 stops receiving until sending a packet (#19653)
* b-l072z-lrwan1: tests/ztimer_overhead: test failure (#19224)
* backport_pr: Only works for when fork is in user (not in
organization) (#18486)
* benchmark_udp: hammering with low interval causes issues (#16808)
* boards/esp32-wroom-32: tests/mtd_raw flakey (#16130)
* Builds fail when different execstack options are around in objects (#18522)
* Can't build relic with benchmarks or tests (#12897)
* CC2538-CC2592EM has a very weak transmit power (#17543)
* CC2538DK board docs: broken links (#12889)
* cpp: Exception handling undefined (#17523)
* cpu/stm32: some tests are failing on CM33 (l5, u5) (#17439)
* doc/boards: information concerning access to RIOT shell (#17453)
* 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)
* examples/gcoap: client broken (#19379)
* feather-m0: `make flash` reports "device unsupported" (#17722)
* flashing issue on frdm-k64f (#15903)
* frdm-k22f failing tests/periph_flashpage (#17057)
* frdm-k22f fails tests/periph_timer (#19543)
* Freeze into semtech_loramac_send call (pkg/semtech-loramac) (#18790)
* gcoap: gcoap_req_send and related should return negative for errors (#19393)
* gnrc_ipv6_nib: Neighbor Solicitation ping-pong (#18164)
* I2C not working under RIOT with U8G2 pkg (#16381)
* ieee802154_security: Nonce is reused after reboot (#16844)
* kconfiglib.py choice override of menuconfig bug (#19069)
* 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)
* MTD is confusing (#17663)
* nanocoap: incomplete response to /.well-known/core request (#10731)
* Order of auto_init functions (#13541)
* periph_rtt: rtt_set_alarm() blocks IRQ for 80 plus usec on STM32 (#19520)
* pkg/tinydtls: Multiple issues (#16108)
* Potential race condition in compile_and_test_for_board.py (#12621)
* RIOT is saw-toothing in energy consumption (even when idling) (#5009)
* riotboot: ECC faults (eg. in STM32L5 or STM32WB) not handled
gracefully (#17874)
* rust-gcoap example is incompatible with littlefs2 (#17817)
* Samr30/gpio: Erasing then write mux can generate spurious IRQ (#19993)
* samr34-xpro: some tests failing (#19223)
* sock_dtls: unable to send big messages (#17996)
* spurious IRQs in `periph_timer` (#18976)
* stdio_ethos: infinite shell loop (#17972)
* stdio_tinyusb_cdc_acm hangs with picolibc (#19277)
* STM32 Nucleo boards improperly clocked (#19778)
* STM32F4-discovery + mrf24j40 not working (#19711)
* sys/riotboot: documentation issues (#11243)
* tests/lwip target board for python test is hardcoded to native (#6533)
* tests/periph_flashpage: failing on stm32l475ve (#17280)
* tests/pkg/relic is failing on samr21-xpro when built using llvm (#19903)
* tests/pkg_libhydrogen: test fails on master for the samr21-xpro with
LLVM (#15066)
* tests/pkg_libschc: Failing test_reassemble_success_ack_always (#19445)
* 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)
* Types in `byteorder.h` need a cleanup (#14737)
* USB identifiers with funny characters create mojibake (#17776)
* usbus/msc: wrong error handling and behavior after usb reset (#19478)
* Use of multiple CAN bus on compatible boards (#14801)
* ztimer is incompatible with real-time requirements (#18883)
There are 166 known issues in this release
Fixed Issues since the last release (2024.04)
=============================================
- BlackMagicProbe does not recognize nRF52 device (#20604)
- missing build dependencies in the rust build (#19714)
- sys/riotboot/flashwrite: unaligned write when skipping
`RIOTBOOT_MAGIC` on stm32wb (#15917)
- driver/hts221: Temperature and Humidity readings incorrect (#12445)
- NATIVEINCLUDES Does not include USEMODULE_INCLUDES from
log_printfnoformat (#11603)
5 fixed issues since last release (2024.04)
Acknowledgements
================
We would like to thank all companies that provided us with hardware for porting
and testing RIOT. 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-2024.04 "UwUtastic" - 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 2024.04 release, nicknamed "UwUtastic", includes many features and bug fixes.
Here are some of the highlights:
+ RIOT boots on two newly added boards:
+ The Nintendo Game Boy Advance (#19519)
+ Native on 64-bit Linux / x86_64 (#20315, #20335, #20339)
+ The documentation features a new guide to help you set up a RIOT develpoment environment on Windows (#20426)
+ To accommodate the ever growing RAM sizes in the IoT, RIOT can now monitor your `malloc` usage (#20363)
- Dependency modelling via Kconfig is no longer part of RIOT. A big step forward towards having only one source of truth for configurations (#20438)
210 pull requests, composed of 446 commits, have been merged since the
last release, and 4 issues have been solved. 42 people contributed with
code in 82 days. 2409 files have been touched with 26218 (+) insertions and
29933 deletions (-).
Notations used below
====================
+ means new feature/item
* means modified feature/item
- means removed feature/item
New features and changes
========================
Core
----
+ core/lib/cib: add new functionality (#20464)
+ macros/utils: add LIMIT() and ABS() macros (#20352)
* mbox: provide function to unset initialized mbox (#15485)
System Libraries
----------------
+ add error check of aes_encrypt() (#15576)
+ event_periodic_callback: add event_periodic_callback_create() (#20459)
+ shell/cmds: add udptty command (#19742)
+ sys/libc: add endian.h (#20310)
+ sys/shell/lwip: add IPv4 configuration to lwip ifconfig command (#19849)
+ tests: Add NULL pointer argument test for fmt_lpad/to_lower/str (#20344)
* makefiles/cargo: Remove CARGO_CHANNEL, add `make info-rust` and simplify Cargo invocations (#20319)
* Monitoring malloc usage (#20363)
* rust: Increase Cargo.lock stability and usefulness (#18684)
* sys/checksum: Remove deprecated crc16_ccitt functions (#20527)
* sys/hashes: support for SHA-{384,512/{224,256}} (#20484)
* sys/isrpipe/read_timeout: don't set up timer if data is available (#20558)
* sys/newlib_syscalls_default: fix race condition in __sinit() (#20392)
* sys/psa_crypto: use SHA256 CSPRNG as default (#20460)
* sys/shell: Document that shell access means root access (#20546)
* sys/suit: Remove deprecated suit_coap_run function (#20528)
* sys/suit: return error when URL buffer is too small (#20559)
* sys/tiny_strerror: fix compilation on LLVM (#20483)
Networking
----------
+ gcoap: add some client-side observe handling (#20073)
+ nanocoap: add coap_build_reply_header() (#20284)
+ nanocoap: introduce coap_get_method() (#20191)
+ nanocoap_sock: add support for IPv4 (#20476)
+ net/sock_dtls: add public key verification (#20048)
+ pkg/wakaama: Notify resource updates when writing to resources (#20326)
+ sys/net/ipv4: add IPV4_ADDR_INIT() macro (#20354)
* always use nanocoap_resources instead of manually assembling
coap_resources[] (#20374)
* cord_lc: Process truncated reads (#20547)
* gnrc_ipv6_nib: Ignore PIO with on-link flag (#20418)
* nanocoap/cache: Extend with option-only cache keygen (#20043)
* pkg/tinydtls: enforce the default dtls user params to be configurable (#20478)
* routing/rpl: Fixing styling & format (#20294)
* sys/net/gnrc: Remove code duplication (#16502)
Packages
--------
+ pkg/wakaama: add Light Control object implementation (#16204)
* ci: support git-cache-rs (#20311)
* Makefile.{include,base},pkg/nanopb: fix target deps & code generation (#20400)
* pkg/flashdb: enhance FAL config (#20221)
* pkg/uzlib: warn about memory leak during compression (#20293)
Boards
------
+ boards/cpu: Add GBA boot support to RIOT (#19519)
+ boards/nucleo-c031c6: add PWM configuration (#20520)
+ boards/nucleo-u575zi-q: Add support (#20444)
+ boards/weact-g030f6: add support for minimal break-out board (#20337)
+ cpu/rpx0xx: add initial pwm support (#20473)
+ cpu/stm32: add support for STM32C0 and NUCLEO-C031C6 (#20300)
* boards/feather-nrf52840-sense: declare lsm6ds33 accelerometer (#20436)
* boards/feather-nrf52840-sense: use generic lsm6dsxx (#20526)
* cpu/msp430/f2xx: clean up periph_uart,periph_spi (#20357)
* cpu/nrf9160: fix GPIOTE ISR (#20560)
* cpu/samd5x write can driver (#19736)
* cpu/stm32u5: Enable rtc support (#20521)
+ native64: New board for 64-bit native Linux / x86_64 (#20315, #20335, #20339)
CPU
---
+ cpu/native: add gpio-mock (#20431)
+ cpu/native: Add support for periph_timer_query_freqs (#20306)
+ drivers/periph_gpio_ll: Implement API to switch direction (#20292)
+ stdio_dispatch: allow to select multiple stdio methods at the same
time (#19738)
* cpu/esp8266: allow arbitrary SPI clocks (#20410)
* cpu/native/periph/uart: uart_poweroff() closes the file descriptor +
extended baud-rate support on Linux (#20365)
* cpu/native: Fix executable stack warning (#20307)
* cpu/native: return error code on failed assertion (#20419)
* cpu/stm32/periph/gpio: simplify condition code (#20479)
* cpu/stm32/periph/usbdev_fs: avoid using ztimer when not needed (#20467)
* cpu/stm32: Fix ifdefs in periph_gpio_ll (#20530)
* cpu/stm32: remove redundant conditional compile block (#20495)
* drivers/mtd_flashpage: allow to define AUX slot on flash (#18608)
* sys/byteorder: clean up implementation (#20313)
* sys/cpp_new_delete: always enable the module when C++ is used (#20348)
* tests: exit `native` with error value on failure (#20445)
* treewide: Rust updates (#20303)
Device Drivers
--------------
* drivers/lsm6dsxx: Allow generic LSM6DSXX driver (#20504)
* drivers/lsm6dsxx: refactoring Lsm6dsl into common driver Lsm6dsxx (#20170)
* drivers/w5100: make use of netdev_eui48_get() (#20304)
Documentation
-------------
+ build system: add list of features for documentation and sanity
checking (#20366)
+ doc: Add guide for dev setup on Windows (#20426)
+ doc: add terminal program configuration (#20493)
+ doc: doxygen: add "Topics" to menus (#20443)
+ doc: Move community processes and vision (import from Wiki) (#20496, #20491, #20498)
+ RDM: Naming boards (#18589, #20469)
* boards/feather-nrf52840*: doc cleanup (#20422)
* boards/nucleo-c031c6: fix ADC and enhance doc (#20502)
* doc/roadmap: Make working 6LBR a goal (#20351)
* doc: Allow resizing of doxygen side-nav (#20511)
* README: Change Section titles from all caps to regular (#20405)
Build System / Tooling
----------------------
+ build system: add `--no-warn-rwx-segments` to linker (#20381)
+ dist/tools/mspdebug: build from source (#20345)
* Avoid using egrep (#20522)
* build system: Improve failure mode for FEAUTRES_REQUIRED_ANY (#20408)
* dist/tools/dhcpv6-pd_ia: recognize Debian correctly (#20487)
* Enable compile_and_test_for_board to skip if nothing changed (#19546)
* tools/openocd: define SWD_EN signal for tigard (#20507)
* tree wide: accommodate RISC-V toolchain update (#20380)
Kconfig
-------
* Remove Kconfig dependency modelling (#20438)
Examples
--------
+ examples/rust-gcoap: Add SAUL (#17554)
* examples/filesystem: Update README and increase default stack size (#20439)
* examples/psa_crypto: Fix modules to run ECDSA on SEs (#20461)
* examples/wakaama: rename to lwm2m (#20327)
Testing
-------
+ tests/shell: add test for preemption (#19005)
+ tests: Add cases to the scn_u32_hex unittest (#20463)
* ci: disable some more flakey native tests (#20358)
* examples, tests: disable native and native64 for more flaky tests (#20401)
* make use of nanocoap_server_auto_init (#20378)
* Refactor tests periph uart (#20281)
* release-test.yml: return of the Matrix notification (#20424)
* tests/pkg/lwip: include default-radio-settings.inc.mk (#20325)
* tests/sys/shell: increase the stack size of periodic thread (#20548)
* tests/sys/timer_overhead: disable test on native in CI (#20324)
* tests/unittests/README: link to Supported Boards updated (wiki ->
site) (#20500)
* tests: 64-bit support preparations (#20276)
* tests: Cover API of scn_u32_hex in the unittest (#20458)
* tests: disable flaky tests on `native` in the CI (#20382)
* unittests: Move at test to driver tests (#20540)
API Changes
-----------
+ drivers/at: fix URC handling and add better testing (#20423)
* drivers/at: parse +CME/+CMS responses and save error value (#20289)
* gcoap: make gcoap_req_send_tl() an alias of gcoap_req_send() (#20514)
* gcoap_fileserver: rename to nanocoap_fileserver (#20030)
* makefiles, treewide: Remove MCU variable (#20397)
Uncategorized
-------------
+ release-notes.txt: add 2024.01 release notes (#20350)
+ Roadmap: Add Home-Assistant integration on the roadmap (#20403)
+ vscode: Add hard-coded path to compile_commands.json (#20417)
And 59 minor changes.
Deprecations
============
Deprecations (3)
----------------
* gnrc_mac / gnrc_lwmac / gnrc_gomach: Deprecate modules (#20512)
* Deprecate MCU preprocessor defines (#20397)
Removals (4)
------------
- drivers/rgbled: Remove driver (#20407)
- periph_usbdev: remove deprecated event flag (#20488)
- treewide: remove deprecated modules (#20471)
- treewide: remove deprecated shell_commands module (#20485)
- gnrc_netif: remove deprecated CONFIG_GNRC_NETIF_LORAWAN_NETIF_HDR (#20515)
- sys/phydat: Remove deprecated print function (#20529)
Bug fixes (18)
==============
* drivers/periph_gpio_ll: Fix GPIO_DISCONNECT handling and add compile
time feature checks (#20290)
* drivers/periph_spi: Add `spi_transfer_u16_be()` (#20312)
* coap: ensure DTLS buffer is at least 200 bytes (#20434)
* core|sys: Guard periph_pm calls (#20523)
* cpu/msp430/periph_uart: Fix uart_write() for USCI peripheral
[backport 2024.04] (#20584)
* cpu/nrf52 i2c: Always buffer writes (#20298)
* cpu/nrf52 i2c: Wait for complete transmission when writing NOSTOP (#20299)
* cpu/sam0_common: flashpage: disable interrupts while writing (#15965)
* cpu/sam0_common: RTC: avoid negative month after POR (#20448)
* cpu/stm32/periph_adc: fix register access (#20360)
* drivers/pcf857x: stop (ab)using gpio_t (#20435)
* Fix for `periph_timer` on `native` (#20317)
* gnrc_ipv6: fix double-free when pinging TNT loopback address (#20309)
* ipv6/nib: cancel timers when NIB entry gets deleted (#20343)
* ipv6/nib: fix router lifetime handling in RIO and fix
gnrc_ipv6_nib_ft_add() api (#20342)
* nanocoap_sock: always use coap_opt_put_uri_pathquery() (#20245)
* sys/usbus: answer get_status if request is standard type (#20475)
* tests/drivers/at_unit: fix unit tests on native (#20551)
Known issues
============
Network related issues (56)
---------------------------
* 6lo: RIOT does not receive packets from Linux when short_addr is set (#11033)
* 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)
* cpu/esp8266: Tracking open problems of esp_wifi netdev driver (#10861)
* DHCPv6 client: Handling of NotOnLink incorrect (#20349)
* dist/tools/sliptty/start_network.sh: IPv6 connectivity is broken on
PC (#14689)
* dns_msg_parse_reply() fails for response from DNS64 service (#20355)
* 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 handle fragmented IPv6 packets from Linux kernel (#12264)
* example/gnrc_border_router cannot answer after some time (#19578)
* 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)
* Global IPv6 addresses remain deprecated after receiving RA (#19846)
* gnrc ipv6: multicast packets are not dispatched to the upper layers (#5230)
* gnrc/ipv6: "invalid payload length" - corrupted IPv6 header when
ENABLE_DEBUG=1 in mbox.c (#20390)
* gnrc_border_router stops routing after a while (#16398)
* gnrc_border_router: Kconfig and C disagree about number of addresses
per interface (#19947)
* 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: old routes are not deleted (#19423)
* 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 TCP Communication Error (#19676)
* 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)
* pkg/tinydtls: DTLS handshake does not work (#19595)
* Removing a TNT global address then adding a new one does not work (#20318)
* samr30 xpro doesn't seem to use its radio ok (#12761)
* scan-build errors found during 2019.07 testing (#11852)
* 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 (7)
------------------------
* 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)
* 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 (12)
---------------------------
* 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)
* 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)
* 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)
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 (14)
-----------------------------------
* Failing tests on FE310 (Hifive1b) (#13086)
* [TRACKING] Fixes for automatic tests of ESP32 boards. (#12763)
* boards/hifive1: flashing issue (#13104)
* cpu/sam0: flashpage write / read cycle produces different results
depending on code layout in flash (#14929)
* esp32-wroom-32: tests/netstats_l2 failing sometimes (#14237)
* examples/gnrc_border_router: esp_wifi_init failed with return value
257 on ESP32-C3 with nimble_rpble (#19319)
* gcoap/esp8266: Stack overflow with gcoap example (#13606)
* Interrupt callback function is instantly called on samd51 after
setting it from within interrupt callback function (#19861)
* 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)
* 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 (7)
-------------------------------
* `buildtest` uses wrong build directory (#9742)
* Build dependencies - processing order issues (#9913)
* dist/tools/cppcheck/cppchck.sh: errors when running with Cppcheck
1.89 (#12771)
* EXTERNAL_MODULE_DIRS silently ignores non-existent entries (#17696)
* make: ccache leads to differing binaries (#14264)
* make: use of immediate value of variables before they have their
final value (#8913)
* missing build dependencies in the rust build (#19714)
Other issues (68)
-----------------
* 2023.04 release bug tracking (#19469)
* [tracking] Bugs found by the peripheral selftest (#20071)
* [TRACKING] sys/shell refactoring. (#12105)
* [tracking] unnecessary use of floating point arithmetic (#19614)
* _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)
* at86rf215 stops receiving until sending a packet (#19653)
* b-l072z-lrwan1: tests/ztimer_overhead: test failure (#19224)
* backport_pr: Only works for when fork is in user (not in
organization) (#18486)
* benchmark_udp: hammering with low interval causes issues (#16808)
* BlackMagicProbe does not recognize nRF52 device (#20604)
* boards/esp32-wroom-32: tests/mtd_raw flakey (#16130)
* Builds fail when different execstack options are around in objects (#18522)
* Can't build relic with benchmarks or tests (#12897)
* CC2538-CC2592EM has a very weak transmit power (#17543)
* CC2538DK board docs: broken links (#12889)
* cpp: Exception handling undefined (#17523)
* cpu/stm32: some tests are failing on CM33 (l5, u5) (#17439)
* doc/boards: information concerning access to RIOT shell (#17453)
* 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)
* examples/gcoap: client broken (#19379)
* feather-m0: `make flash` reports "device unsupported" (#17722)
* flashing issue on frdm-k64f (#15903)
* frdm-k22f failing tests/periph_flashpage (#17057)
* frdm-k22f fails tests/periph_timer (#19543)
* Freeze into semtech_loramac_send call (pkg/semtech-loramac) (#18790)
* gcoap: gcoap_req_send and related should return negative for errors (#19393)
* gnrc_ipv6_nib: Neighbor Solicitation ping-pong (#18164)
* I2C not working under RIOT with U8G2 pkg (#16381)
* ieee802154_security: Nonce is reused after reboot (#16844)
* kconfiglib.py choice override of menuconfig bug (#19069)