2020.01

版本发布时间: 2020-02-04 04:55:35

RIOT-OS/RIOT最新发布版本:2024.10(2024-11-30 04:59:58)

RIOT-2020.01 - Release Notes

RIOT is a multi-threading operating system which enables soft real-time capabilities and comes with support for a range of devices that are typically found in the Internet of Things: 8-bit and 16-bit microcontrollers as well as light-weight 32-bit processors.

RIOT is based on the following design principles: energy-efficiency, soft real-time capabilities, small memory footprint, modularity, and uniform API access, independent of the underlying hardware (with partial POSIX compliance).

RIOT is developed by an international open-source community which is independent of specific vendors (e.g. similarly to the Linux community) and is licensed with a non-viral copyleft license (LGPLv2.1), which allows indirect business models around the free open-source software platform provided by RIOT.

About this release:

The 2020.01 release includes:

Initial support for MicroPython
Initial support for GNRC based LoRaWAN stack
Initial (experimental) asynchronous sock support
Extend support for lpc2387 and fe310 cpus
Xtimer concurrency/robustness improvement, fixing #8388, #5338 & #5103
Complete re-implementation of esp8266 based on ESP8266 RTOS SDK
Improvements in automatic tests
Introduce and start using Kconfig as a configuration tool
+12 new boards, +7 new drivers, +4 new packages

About 527 pull requests, composed of 1367 commits, have been merged since the last release, and about 29 issues have been solved. 61 people contributed with code in 111 days. Approximately 3053 files have been touched with 134416 (+) insertions and 31870 deletions (-).

Notations used below:

+ means new feature/item
* means modified feature/item
- means removed feature/item

New features and changes

System libraries

+ core/kernel_defines: Introduce 'IS_ACTIVE' macro
* core/assert: allow multiple static_asserts within a function
* core/ringbuffer: compensate 'ringbuffer_remove' underflow error
+ core/thread: add zombie thread state
+ sys: basic C++ compatibility with C11 atomics
+ sys/arduino:
    + added Wire (I2C) interface
    + added SPI interface
    * allow use of arduino libraries without need for arduino sketch
    * add implementation for analogWrite
    * fixed frequency selection in SPI
* sys/bitfield: unify byte order and bit order to both be most significant
    bX first
* sys/checksum: move crc8 implementation from sht3x to common code
* sys/color: add color_rgb_set_brightness() and color_rgb_shift()
* sys/crypto/modes/ccm: support length of AAD > 24
* sys/crypto/modes/ccm: support plain text length < 2^32
+ sys/frac: add frac library for integer scaling by semi-constant fractions
+ sys/luid: add luid_get_eui48() / luid_get_eui64()
+ sys/progress_bar: add module for managing a progress bar in stdout
* sys/posix/pthread/pthread.c: fix pthread reaper
* sys/shell: make shell_run run shell forever
* sys/shell_commands: make 6Lo compression contexts configurable on non-6LBR
+ sys/stdio_null: add null driver
* sys/suit: use c25519 instead of hacl
- sys/suit: remove dependency on tinycbor
* sys/usbus:
    * add descriptor prefix support
    * unify terminology to use 'descriptor' everywhere
    * cdc_acm: add interface association descriptor, enable Windows
        enumeration and usage of RIOT CDC ACM
    * cdc_acm: fix to avoid lost characters on USBUS CDC ACM STDIO
* sys/xtimer:
    * concurrency/robustness improvements
    * fix xtimer_mutex_lock_timeout by having _mutex_timeout() check waiting
        list
    - remove dependency to core_msg

Networking

+ sys/gnrc_lorawan: add initial support for GNRC based LoRaWAN stack
* sys/gnrc_netif: make 6LoENC dynamically configurable
+ sys/gnrc_sock: provide asynchronous event implementation
* sys/gnrc_ipv6: fix source check for loopback address
* sys/gnrc_ipv6_ext_frag: remove fragment header when n-th fragment is first
* sys/gnrc_ipv6_nib: allow for configuration of static link-local addresses
* sys/gnrc_netif: highest source address scope wins selection
* sys/gnrc_netif: only use prefix matching as tie-breaker in source
    selection
* sys/gnrc_sixlowpan_frag_rb: split out classic frag specific code
* sys/gnrc_sixlowpan_frag_rb: fix memory-leak in _rm_by_datagram() and in
    interval marker inherited from base
* sys/gnrc_sixlowpan_frag: various optimizations on sending
* sys/gnrc_sixlowpan_iphc: add fragment forwarding stubs
* sys/gnrc_sixlowpan_iphc_nhc: determine UDP hdr length from reassembly
    buffer, fix fragmented data size allocation
* sys/gnrc_tcp: return immediately on gnrc_tcp_recv if connection is closing
+ sys/net/gcoap: add macro to delay initialization of gcoap
* sys/net/gcoap: do not allocate RX buf on stack
* sys/pthread: check malloc() return value, prevent NULL pointer deference
* sys/shell/gnrc_netif: use netif API for ifconfig
* sys/shell/sc_nimble`_netif: allow connecting by name
+ sys/sock: initial definitions for asynchronous event handling
+ sys/sock_async: initial import of event-based implementation

Packages

* pkg: cleanup management of dependencies
* pkg/pkg.mk: use intermediate state files
* pkg/ccn-lite: bump version
+ pkg/flatbuffers: add support for FlatBuffers serialization library
* pkg/gecko_sdk: update to version 2.7
* pkg/libfixmath: several improvements and fixes to support 8bit
* pkg/littlefs: bump littlefs version to 1.7.2
* pkg/lora-serialization: bump to latest version and update test for AVR
* pkg/lwip:
    * add support for esp32 Ethernet device
    * add IPv4 support for LWIP-stm32
    * start DHCP for a netif with lwip_dhcp
    * add stm32 ethernet support
    * enable lwIP for ESP8266
+ pkg/nanopb: add Nanopb protocol buffers library package
* pkg/nimble:
    * bump version
    + add simple BLE connection manager: autoconn
    + add user event callback to autconn
    + nimble_netif: catch L2CAP connection failures
    + nimble_netif: add additional events
* pkg/tinydtls: add DTLS sock API implementation
* pkg/tinydtls: bump version
+ pkg/tensorflow-lite: add support to RIOT
+ pkg/utensor: add support to RIOT
* pkg/u8g2: refactor the U8g2 package
* pkg/wakaama: add basic LWM2M client implementation

Boards

- boards: remove RTT_NUMOF/RTC_NUMOF
- boards: unexport PROGRAMMER
+ boards/adafruit-nrf52840: initial support
* boards/arduino-zero: configure ADC channels
+ boards/atmega328p: initial support for standalone version
* boards/atmega328p: support variable xtimer frequencies
+ boards/atmega1284P: initial support for standalone version
+ boards/atmega256rfr2: initial support
+ boards/avr-rss2: initial support
+ boards/cc1252: initial support
* boards/common: clean up msba2 common files
+ boards/derfmega*: initial support
+ boards/esp32-ttgo-t-beam: initial support
- boards/frdm: remove support for OpenOCD < v0.10.0
+ boards/mcb2288: initial support
+ boards/microduino-corerf: initial support
* boards/nucleo-f207zg: add ethernet configuration
* boards/native: allow for native to be reset via SIGUSR1
* boards/particle-*: configure PCB antenna for 2.4GHz radio
* boards/pic32-clicker: cleanup uart configuration and initialization
* boards/pic32-clicker: use pic32prog as default programmer
+ boards/pinetime: initial support for the PINE64 PineTime smartwatch
+ boards/sodaq-*: add arduino support
* boards/sodaq-*: refactor common code
+ boards/stm32f030f4-demo: initial support
* boards/stm32-common:
    * allow SPI signals routed on multiple alternate functions
    * add 54MHz and 108MHz SPI divtable entries
    * common programmer/debugger/serial config
* boards/thingy: add dependency for on-board hts221/lps22hb sensors

CPU

+ cpu/arm7_common: hook up puf_sram
+ cpu/atmega128rfa1: add initial support
+ cpu/atmega256rfr2: symbol counter based RTT support
+ cpu/atmega_common:
    * clean ups and fix code run at end of ISR to behave like
        `thread_yield_higher`
    * fixed atmega_exit_isr
    * uart: use TX_ISR to check uart transmission end
    + cpuid: provide for every device
    + rtt: initial peripheral driver support
    + wdt: initial peripheral driver support
* cpu/cortexm: fix -mfpu flag value for CortexM7
* cpu/fe310:
    * several cleanup in implementation and clock setup
    * change default optimization to "-Os"
    * uart: rework driver and fixes
    + i2c: initial peripheral driver support
    + spi: initial peripheral driver support
    + cpp: add feature
* cpu/esp*: esp_wifi used as default netdev for lwip
* cpu/esp32:
    * improvements and cleanup of log_module
    * fix lwip + esp_wfi, esp_wifi send buffer should not be on stack
    * use esptool.py from riot tools
    * rtc: fixes, improvements and cleanups
    * spi: fix CS handling in spi_transfer_bytes
    * uart: workaround uart sporadically set to wrong value when the CPU
        clock is changed
    * spi: enable use of SPI flash drive with pkg_littlefs
* cpu/esp8266:
    * complete re-implementation based on ESP8266 RTOS SDK
    * fix of esp_wifi_send function
    * fix bootloaders and log outputs in vendor code
* cpu/efm32: fix uart handling of RX when no RX callback is configured
* cpu/efm32: normalize time in rtc_series1
* cpu/lpc2387:
    * allow for more flexible clock selection
    + add support for backup RAM
    * uart: update the UART driver
    + pm: initial support
    + dac: initial support
    * rtc: enable RTC on rtc_init(), align with other RTC implementations
    * lpc2387.ld: cleanups and align with cortexm_base.ld
    * lpc2387.ld: provide thread_isr_stack_*() - MicroPython
+ cpu/kinetis: add flashpage for W & K series
* cpu/msp430_common: add flashpage_raw
* cpu/native:
    + initial import of stdio_native
    * allow Access to Hardware SPI Bus on Linux
    * fix all-asan Makefile target
* cpu/stm32:
    * i2c_2: fix read bytes flag
    - i2c_2: do not support repeated start reading
    * stmclk: fix M-factor shift for SAI PLL
    * stcmlk: add functions for low power mode clock config
    + stm32f0: add support for stm32f030cc CPU
    + stm32f1: add rtt peripheral driver
    + stm32l0: add stm32l010c6 support
* cpu/sam0_common:
    * uart: implement non-blocking uart write
    + uart: add hardware flow control support
    * rtt: enable COUNTSYNC in CTRLA, fixes `rtt_get_counter()` return value
    * spi: power off spi on release, avoid bus errors affecting application
        code
    * adc: fix API to return `-1` on unsupported resolution
* cpu/samd21: use dedicated 1kHz GCLK4 for RTC and WDT

Device Drivers

+ doc/doxygen: add device driver guide
+ drivers: add Differentially Operated Serial Ethernet (DOSE) driver
* drivers/at86rf2xx: add support for ATmegaRF MCUs
* drivers/at86rf2xx: enable Smart Reduced Power Consumption for AT86RFR2
* drivers/bmx280: added SPI models
+ drivers/dcf77: add driver for DCF77
* drivers/hd44780: move params header to the right place
+ drivers/ili9341: initial import of ili9341 LCD driver
* drivers/ina220: re-worked and added SAUL adaptation
+ drivers/ina3221: add driver for INA3221 current, power & voltage monitor
+ drivers/itg320x: add driver for InvenSense ITG-320X 3-axis gyroscope
* driver/mpu9x50: make mpu9150 more generic
* drivers/mrf24j40: allow for basic self-test on init
* drivers/mrf24j40: fix start up code
+ drivers/qmc588rl: add support for QMC5883L
+ drivers/shtc1: add driver for SHTC1 temperature and humidity sensor
+ drivers/ws281x: add driver for WS281x RGB LED driver for ATmega platform
* drivers/xbee: fix reference to device from netif in send function
* periph/adc: change return type of `adc_sample()` to `int32_t`

Build System / Tooling

+ dist/tools:
    + add Kconfiglib
    + add helper script for Black Magic Probe
    + add support for miniterm.py
    * fix 'make reset' with bootloader in avrdude
+ dist/testbed-support: add nrf52{840,832}mdk in IOTLAB_NODE targets
+ doc/advanced-build-system-tricks: handle multiple boards
+ doc/doxygen: add build system doc page for BOARD, CPU, FEATURE
+ doc/doxygen: add build-system-basics.md with general build system tips
+ Kconfig:
    + add build system integration and test application
    + makefiles: include configuration symbols to build system
    + makefiles: add symbols for used packages
    + expose gnrc/ipv6/whitelist configurations
    + expose gnrc/lorawan configurations
    + expose usb configurations
    + expose net/sock/util configurations
    + expose gnrc/netif configurations
    + expose gnrc/ipv6 configurations
+ make:
    + introduce 'BOARDSDIR' to support external boards using common code in
        'RIOTBOARD'
    * fail by default when errors are expected
    + add architectures features
    + add features blacklisting
    + add blob utility header
    * enable SECONDEXPANSION for module/application builds
    + add CXXEXT and CXXEXCLUDE variable for customizing C++ builds
- makefiles:
    - remove use of export with LINKFLAGS variable
    + add possibility to provide board specific application dependencies in
        a separate Makefile
    * generate proper dependency files when using ccache
    * fix LOG_LEVEL handling
    - disable `-Watomic-alignment` on LLVM
    + introduce 'PROG_DEV' to specify programmer device
    * assert CPU is defined by BOARD/Makefile.features
    + add TERMFLASHDEPS to TERMDEPS so it also applies to `test`
    * tools: allow make reset via avrdude
    * tools: set DEBUG_ADAPTER_ID as JLINK_SERIAL

Testing

- dist/tests/philip: Removed old code and tests
* dist/tools/testrunner:
    * make interactive test sync retries/delay configurable
    * reset before opening terminal
    - reset after opening terminal only if interactive test sync is not used
    * add variable for customizing a delay before reset
    * make interactive test sync retries/delay configurable
* dist/tools/compile_and_test_for_board.py: allow use of wildcards for
    applications selection
+ murdock: enable esp32-wroom-32 for CI testing
* tests:
    + use test_interactive_test_util
    + add automated tests guidelines in README
    - remove APPLICATION definition in tests/*
+ tests/gnrc_sock_neterr: proof of concept test for gnrc_sock + gnrc_neterr
+ tests/bench_xtimer: initial import
* tests/lwip: enable IPv4
* tests/malloc: improve application and add an automatic test script
* tests/memarray: add python script for automatic testing
* tests/nordic_softdevice: cleanup test script and fix test
+ tests/periph_timer_short_relative_set: initial import
* tests/periph_cpuid: add automatic test script
* tests/sys_arduino: fix test synchronization issues
* tests/unittests: fix `tests-pkt` for non-32bit platforms

API Changes

drivers/ina220: changes to comply with RIOT's design goals & SAUL adaption
usbus: unified terminology within USBUS to match the terminology from the specs. hdr, hdrs, headers, etc is replaced everywhere with descr descriptors and descriptors.
Makefile.include: fail by default when errors are expected

/* change return type of `adc_sample()` to `int32_t` to allow support for ADCs
   with resolution of more than 16 bits on 8 bit and 16 bit platforms*/
- int adc_sample(adc_t line, adc_res_t res)
= int32_t adc_sample(adc_t line, adc_res_t res)

/* pass memo to resp_handler directly */
- typedef void (*gcoap_resp_handler_t)(unsigned req_state, coap_pkt_t* pdu,
-                                      sock_udp_ep_t *remote);
+ typedef void (*gcoap_resp_handler_t)(const gcoap_request_memo_t *memo,
+                                      coap_pkt_t* pdu,
+                                      const sock_udp_ep_t *remote);

/* allow to pass user context to requests */
  size_t gcoap_req_send(const uint8_t *buf, size_t len,
                        const sock_udp_ep_t *remote,
-                       gcoap_resp_handler_t resp_handler);
+                       gcoap_resp_handler_t resp_handler, void *context);

/* assume `netif->ops->init()` to be set to at least a default */
-     _init_from_device(netif);
- #ifdef DEVELHELP
-     _test_options(netif);
+     netif->ops->init(netif);
+ #if DEVELHELP
+     assert(options_tested);
# endif
-     netif->cur_hl = GNRC_NETIF_DEFAULT_HL;
- #ifdef MODULE_GNRC_IPV6_NIB
-     gnrc_ipv6_nib_init_iface(netif);
- #endif
-     if (netif->ops->init) {
-         netif->ops->init(netif);
-     }

/* split the semantic of gnrc_netif_is_6ln() into two check functions */
/* is the interface performing 6Lo-ND as specified in RFC 6775. */
- bool gnrc_netif_is_6ln(const gnrc_netif_t *netif);
+ bool gnrc_netif_is_6lo(const gnrc_netif_t *netif);
+ static inline bool gnrc_netif_is_6ln(const gnrc_netif_t *netif

/* add function to start a shell and exit once EOF is reached. */
+ void shell_run_once(const shell_command_t *commands, char *line_buf, int len);

/* return reassembly buffer entry created or updated */
- void gnrc_sixlowpan_frag_rb_add(gnrc_netif_hdr_t *netif_hdr,
-                                 gnrc_pktsnip_t *frag, size_t offset,
-                                 unsigned page);
+ gnrc_sixlowpan_frag_rb_t *gnrc_sixlowpan_frag_rb_add(gnrc_netif_hdr_t *netif_hdr,
+                                                      gnrc_pktsnip_t *frag,
+                                                      size_t offset, unsigned page);

/* move gnrc_sixlowpan_frag_rb_dispatch_when_complete() out of
   gnrc_sixlowpan_frag_rb_add(). The caller of the latter function is now
   responsible to call it. */
+ int gnrc_sixlowpan_frag_rb_dispatch_when_complete(gnrc_sixlowpan_frag_rb_t *rbuf,
+                                                   gnrc_netif_hdr_t *netif);

/* don't assume interface specifier is an int for splitting, add functions to
   split int and string */
-  * @return          interface number or -1 if none specified
+  * @return          string containing the interface specifier.
+  * @return          NULL if no interface was specified.
+  */
- static inline int ipv6_addr_split_iface(char *addr_str)
+ static inline char *ipv6_addr_split_iface(char *addr_str)

- int ipv6_addr_split(char *addr_str, char seperator, int _default);
+ int ipv6_addr_split_int(char *addr_str, char seperator, int _default);
+ char *ipv6_addr_split_str(char *addr_str, char separator);

/* change address getter and setter functions to avoid byte order confusion */
- uint16_t at86rf2xx_get_addr_short(const at86rf2xx_t *dev);
+ void at86rf2xx_get_addr_short(const at86rf2xx_t *dev, network_uint16_t *addr);

- void at86rf2xx_set_addr_short(at86rf2xx_t *dev, uint16_t addr);
+ void at86rf2xx_set_addr_short(at86rf2xx_t *dev, const network_uint16_t *addr);

- uint64_t at86rf2xx_get_addr_long(const at86rf2xx_t *dev);
+ void at86rf2xx_get_addr_long(const at86rf2xx_t *dev, eui64_t *addr);

- void at86rf2xx_set_addr_long(at86rf2xx_t *dev, uint64_t addr);
+ void at86rf2xx_set_addr_long(at86rf2xx_t *dev, const eui64_t *addr);

Deprecations

Warnings

GNU make <4 will be removed after release 2020.01
net/gcoap: gcoap_finish() will be removed after release 2020.04
makefiles/vars.inc.mk: PORT_BSL & AVRDUDE_PORT will be removed after release 2020.04
gnrc_nettest: will be removed after release 2020.07

Removals

sys/ubjson: remove module
dist/tests/philip: removed unneeded and unused tests and code
net/gcoap: remove gcoap_req_send2()
cpu/efm32: remove EFM32_UART_MODES
boards: remove RTT_NUMOF/RTC_NUMOF

Known issues (130)

Networking related issues (45)

#13088: Riot-os freezes with lwip + enc28j60 + stm32L4 #12964: esp32: network devices pull in GNRC dependencies statically #12943: driver/mrf24j40: blocks shell input with auto_init_gnrc_netif #12884: examples/cord_ep: Dead lock when (re-)registering in callback function #12858: KW2XRF: Broken network communication without netstats-l2 #12857: examples/gnrc_networking_mac broken on ATmega #12565: gnrc_icmpv6_echo: flood-pinging another node leads to leaks in own packet buffer #12264: ethos: Unable to handle fragmented IPv6 packets from Linux kernel #12210: stale border router does not get replaced #11988: ethos: fails to respond to first message. #11860: send data with UDP at 10HZ, the program die #11859: examples: dtls-echo fails silently when DTLS_ECC flag enabled #11852: scan-build errors found during 2019.07 testing #11795: gnrc_tftp: string functions on non-null terminated input #11405: nrfmin: communication not possible after multicast ping with no interval #11212: POSIX sockets + lwIP: bad file descriptor #11033: 6lo: RIOT does not receive packets from Linux when short_addr is set #10969: net: netdev_driver_t::send() doc unclear #10861: cpu/esp8266: Tracking open problems of esp_wifi netdev driver #10809: openthread: does not build on current Arch #10410: Missing drop implementations in netdev_driver_t::recv #10389: gnrc_sock_udp: Possible Race condition on copy in application buffer #10380: netdev_ieee802154: Mismatch between radio ll address and in memory address #10370: gomach: Resetting netif with cli doesn't return #10338: xbee: setting PAN ID sometimes fails #9709: examples: failed assertion in dtls-echo example #9656: gnrc/netif: various problems after resetting interface a second time #8779: CC2538 RF overlapping PIN usage #8752: mrf24j40: does not link for examples/default #8271: app/netdev: application stops working after receiving frames with assertion or completely without error #8242: at86rf2xx: Dead lock when sending while receiving #8199: gcoap example request on tap I/F fails with NIB issue #8172: gnrc_netif, gnrc_uhcpc: Replacing prefix on border router results in no configured prefix #8130: gcoap: can't build with network stacks other than GNRC #8086: gnrc_rpl_p2p: port to nib and fix compile errors #7737: pkg: libcoap is partially broken and outdated #7474: 6lo gnrc fragmentation expects driver to block on TX #7304: General 802.15.4/CC2538 RF driver dislikes fast ACKs #6018: nRF52: gnrc_6lowpan_ble: memory leak with nordic_softdevice_ble #5863: OSX + SAMR21-xpro: shell cannot handle command inputs larger than 64 chars #5748: gnrc: nodes crashing with too small packet buffer #5486: at86rf2xx: lost interrupts #5230: gnrc ipv6: multicast packets are not dispatched to the upper layers #5051: Forwarding a packet back to its link layer source should not be allowed #4527: gnrc_ipv6: Multicast is not forwarded if routing node listens to the address

Timer related issues (17)

#13072: periph/timer: timer_set() underflow safety check (tracking issue) #12909: Bug: Unexpected behavior with xtimer_periodic_wakeup() for large periods on Nucleo-f401re #11523: xtimer_periodic_wakeup crashing at high frequencies on frdm-kw41z #11149: xtimer: hang on xtimer_spin_until (corner case) #10545: periph_timer: systematic proportional error in timer_set #10523: saml21 system time vs rtc #10510: xtimer_set_msg: crash when using same message for 2 timers #10073: xtimer_usleep wrong delay time #9187: sys/newlib: gettimeofday() returns time since boot, not current wall time. #9052: misc issues with tests/trickle #9049: xtimer mis-scaling with long sleep times #8746: stm32_common/periph/rtc: current implementation broken/poor accuracy #8251: telosb: xtimer config wrong when running on a tmote sky #7347: xtimer_usleep stuck for small values #7114: xtimer: add's items to the wrong list if the timer overflows between _xtimer_now() and irq_disable() #6442: cpu/native: timer interrupt issue #6052: tests: xtimer_drift gets stuck on native

Drivers related issues (12)

#12445: driver/hts221: Temperature and Humidity readings incorrect #12371: fail to send data to can bus #12370: Undocumented uint8_t assumptions in nrf52840 peripherals #12045: floats and doubles being used all over the place. #12037: cpu/sam0_common: i2c baudrate calculation fails if CLOCK_CORECLOCK > 51 MHz #11388: SD card initialization: timeouts effectively blocking #11104: STM32: SPI clock not returning to idle state and generating additional clock cycles #11026: Recent changes effectively killed modular board designs #9419: cpu/msp430: GPIO driver doesn't work properly #8213: at86rf2xx: Basic mode and NETOPT_AUTOACK #8045: stm32/periph/uart: extra byte transmitted on first transmission #4876: at86rf2xx: Simultaneous use of different transceiver types is not supported

Native related issues (3)

#11472: Warnings from objcopy and size (binutils 2.32) #5796: native: tlsf: early malloc will lead to a crash #495: native not float safe

Other platforms related issues (16)

#13267: Failing tests on MSP430 (z1) #13104: boards/hifive1: flashing issue #13086: Failing tests on FE310 (Hifive1b) #12854: pm_reboot() not working on AVR when compiled with LTO=1 #12763: [TRACKING] Fixes for automatic tests of ESP32 boards. #12651: Failing tests on AVR (tested with atmega256rfr2-xpro) #12168: pkg/libb2: blake2s doesn't work on AVR #12057: ESP32 + DHT + SAUL reading two endpoints causes freeze. #10258: Incorrect default $PORT building for esp32-wroom-32 on macOS #10122: Indeterministic hard fault in _mutex_lock(), with nRF52 SoftDevice #10076: cpu/cortexm_common: irq_enable returns the current state of interrupts (not previous) #8408: pkg/fatfs: linker error when build tests/pkg_fatfs_vfs for msb430 based boards #7753: pic32-wifire: race-condition when linking in concurrent build #6567: periph/spi: Switching between CPOL=0,1 problems on Kinetis with software CS #5774: cpu: cortexm_common: context switching code breaks when compiling with LTO #4954: chronos: compiling with -O0 breaks

Build system related issues (9)

#12771: dist/tools/cppcheck/cppchck.sh: errors when running with Cppcheck 1.89 #10850: Tracking: remove harmful use of export in make and immediate evaluation #9913: Build dependencies - processing order issues #9742: buildtest uses wrong build directory #9645: Different build behavior between murdock and riot/riotbuild:latest image #8913: make: use of immediate value of variables before they have their final value #8122: doxygen: riot.css modified by 'make doc' #6120: Windows AVR Mega development makefile Error #4053: macros: RIOT_FILE_RELATIVE printing wrong file name for headers

Other issues (28)

#13265: tests: compilation of some test applications fail with NDEBUG #13133: tests/pkg_tensorflow-lite: tests randomly failing on nrf52dk and esp32-wroom-32 #13120: tests: broken with stdio_rtt if auto_init is disabled #13044: _NVIC_SystemReset stuck in infinite loop when calling pm_reboot through shell after flashing with J-Link #13015: Quickest start does not build with vagrant #12732: tests: some tests don't work with newlib lock functions. #12205: core: atomic: Unable to compile starting with gcc 9.1.0 #12108: make term output is inconsistent between boards, ethos and native #12105: [TRACKING] sys/shell refactoring. #11885: arm7: printf() with float/double not working #11243: sys/riotboot: documentation issues #10751: Possible memset optimized out in crypto code #10731: nanocoap: incomplete response to /.well-known/core request #10639: sys/stdio_uart: dropped data when received at once #10121: RIOT cannot compile with the latest version of macOS (10.14) and Xcode 10 #9882: sys/tsrb is not thread safe on AVR #9518: periph/i2c: tracking bugs and untested acks #9371: assert: c99 static_assert macro doesn't function for multiple static_asserts in the same scope #8589: Why using -F in avrdude? #8436: Kinetis PhyNode: failed to flash binary > 256K #7220: sys/fmt: Missing tests for fmt_float, fmt_lpad #6533: tests/lwip target board for python test is hardcoded to native #5769: Possible problem in scheduler #5009: RIOT is saw-toothing in energy consumption (even when idling) #4866: periph: GPIO drivers are not thread safe #4488: Making the newlib thread-safe #3256: make: Setting constants on compile time doesn't really set them everywhere #2346: Tracker: Reduce scope on unintended COMMON variables

Fixed Issues since the last release (2019.10) (29)

#13121: tinydtls package has undeclared dependencies #13109: fe310: xtimer hardfault #13083: cpu/atmegaxxxx: i2c driver not fully implemented? #13069: BrokenPipeError when flashing bluepill with BMP #13055: PKG_SOURCE_LOCAL override is broken #13030: pkg: always rebuilt when patches are applied #12920: kconfiglib: only pull when needed #12905: Potential buffer overflow in dtls-sock #12859: lwip: multiple sock_udp_send() return ENOMEM. (possible memory leak?) #12853: sys\net\gnrc\link_layer\gomach: cast error with avg-gcc #12834: make: piping STDOUT updates riotbuild.h.in and leads to full rebuild #12807: make: rebuild doesn't apply to header files #12700: Cannot delete files in SD card. And I can't read more bytes than I ever wrote in tests/pkg_fatfs. #12652: samr21-xpro: Can't use make debug anymore #12578: ATmega256RFR2 / ATmega128RFA1: periph/cpu_id provided without HW support #12384: CDC-ACM (serial console) loses characters #12286: Some tests are failing on STM32F7 #12243: ESP32 programming using BUILD_IN_DOCKER still expects esp-idf toolchain on host #12003: bootloaders|tests/riotboot: broken with BUILD_IN_DOCKER and wrong flashfile #11941: cpu/esp32: instabilities in multiheap memory management #11908: cpu/lpc2387: periph_rtc completely broken #11423: cpu/kinetis: features provided not properly defined according to series #8388: xtimer_periodic_wakeup is not interrupt safe #8107: crypto/ccm: bugs in the implementation of CCM mode #8052: mips: several issues #5338: xtimer: xtimer_now() not ISR safe #5103: xtimer: weird behavior of tests/xtimer_drift, bug? #3366: periph/i2c: handle NACK

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

Mailing lists

RIOT OS kernel developers list devel@riot-os.org (http://lists.riot-os.org/mailman/listinfo/devel)
RIOT OS users list users@riot-os.org (http://lists.riot-os.org/mailman/listinfo/users)
RIOT commits commits@riot-os.org (http://lists.riot-os.org/mailman/listinfo/commits)
Github notifications notifications@riot-os.org (http://lists.riot-os.org/mailman/listinfo/notifications)

IRC

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

License

The code developed by the RIOT community is licensed under the GNU Lesser General Public License (LGPL) version 2.1 as published by the Free Software Foundation.
Some external sources and packages are published under a separate license.

All code files contain licensing information.

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