RIOT 标签 - Gitee.com

2022.04-RC3

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2022-04-17 05:22

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2022.04-RC2

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2022-04-11 04:10

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2022.07-devel

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2022-04-09 00:37

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2022.04-RC1

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2022-04-09 00:37

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2022.01

5265213

2022-01-29 02:02

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2022.01-RC2

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2022-01-25 22:25

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2022.04-devel

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2022-01-14 00:01

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2022.01-RC1

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2022-01-14 00:01

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2021.10

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2021-10-28 19:55

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2021.10-RC3

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2021-10-20 20:00

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2021.10-RC2

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2021-10-19 04:35

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2022.01-devel

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2021-09-29 23:57

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2021.10-RC1

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2021-09-29 23:57

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2021.07

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2021-07-17 16:42

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2021.07-RC3

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2021-07-15 04:03

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2021.07-RC2

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2021-07-08 04:42

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2021.10-devel

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2021-07-02 22:39

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2021.07-RC1

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2021-07-02 22:39

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2021.04

RELEASE 2021.04

RIOT-2021.04 - Release Notes
============================
RIOT is a multi-threading operating system which enables soft real-time
capabilities and comes with support for a range of devices that are typically
found in the Internet of Things: 8-bit and 16-bit microcontrollers as well as
light-weight 32-bit processors.

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

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

About this release:
===================

The 2021.04 release includes:

- netstats can now collect L1/L2 per neighbor statistics
- sock DTLS now allows using multiple credentials
- congure - a framework for implementing congestion control algorithms
- xfa (cross file arrays) - a mechanism to more easily define stuff across
  files (e.g., shell commands)
- nimble is now using low-power ztimer
- nrf5x now properly configures external HF clock, power use down 411µA -> 3.6µA
  for examples/minimal on nrf52dk
- many more modules and drivers have Kconfig support
- the semtech-loramac package now supports sx126x/llcc68 radios
- 8 new boards, 6 new drivers, 8 packages upgraded

We've also mostly finished our migration from mailing lists to forum.riot-os.org.

375 pull requests, composed of 992 commits, have been merged since the
last release, and 16 issues have been solved. 56 people contributed with
code in 103 days. 2564 files have been touched with 191220 (+) insertions and
91400 deletions (-).

Notations used below:
=====================

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

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

Core
----
+ clist: added clist_is_empty()
+ xfa: initial support for XFA's (cross file arrays)

System Libraries
----------------
* shell: allow defining shell commands using XFA
+ dbgpin: module for debugging and profiling
+ ztimer: add ztimer_is_set()
+ ztimer: add ZTIMER_SEC
+ ztimer: add periph_ptp backend

Networking
----------

* cord: Discovery patch altered to reflect changes in the underlying Resource Directory draft
* lwip: hook up sam0_eth support
+ congure: framework to implement congestion control and use it in a reusable manner with
  a number of protocols
+ netstats: L1/L2 per neighbor statistics
+ sock DTLS: allow using multiple credentials

Packages
--------

* emlearn: bump version to 0.11.6
* libfixmath: bump version to latest master
* nanocbor: bump version
* nanopb: bump version to 0.4.5
* fatfs: bump version to r0.14a
* littlefs2: Bump to v2.4
* monocypher: bump to version 3.1.2
* nimble: migrate to ztimer, allowing low power operation
* openthread: bump version to 20191113
* wakaama: add patch to cast macro to time_t
* pkg/semtech-loramac: switch to RIOT AES
* pkg/semtech-loramac: refactor to use netdev API only
* pkg/lwip: Start DHCP early for all Ethernet interfaces

Boards
------

* particle-mesh boards: Use USB serial as stdio by default
* nucleo-f303re: I2C pins remapped to match the data sheet
* nucleo-f722ze: Add periph_can support
* native: compile with `-Og` (was `-O0`)
+ boards/nucleo-f767zi: Add periph_can support
+ New boards:
  + atmega328p-xplained-mini
  + atxmega-a1u-xpro
  + atxmega-a3bu-xplained
  + BastWAN
  + Microbit v2
  + samd20-xpro
  + TI CC1350 LAUNCHXL
  + Zigduino

CPU
---

+ Initial support for ATxmega family of 8-bit AVR CPUs
+ kinetis: enable floating point support
* nrf5x: enhance enabling of internal DC/DC converter
* nrf52: add VDDHDIV5 as ADC input
+ nrf52: add periph_uart_non_blocking support
+ native: add periph/flashpage implementation
+ qn908x: Implement blocking SPI support
+ qn908x: add ADC support
+ sam0_common: add rtc_get_tamper_event()
+ stm32f{2,4,7}: Initial flashpage support
+ stm32f7: added ADC support
* stm32/can: add option to enable deep-sleep per device

Device Drivers
--------------

+ new drivers:
  + sensirion SGP30 gas sensor
  + Amphenol sm-pwm-01c dust sensor
  + Si705x sensors
  + TI BQ2429x charger and power management ICs
  + Netdev driver for nrf24l01p
  + sx126x/llcc68 LoRa radios
* touch_dev & display_dev auto-initialization
* bmx280: increase accuracy of SAUL pressure readings
* lis2dh12: functionality extension
* cc110x: add hook cc1xxx_eui_get()
* ds3231: add alarm support
* at86rf2xx: add missing handler for TRX24_RX_START interrupt
* periph_rtt: add periph_rtt_set_counter  feature

Documentation
-------------

+ riotboot and its USB DFU version were added to the documentation
+ cpu/cc26xx_cc13xx: add CPU documentation
* doc/SAUL: State expectations on blocking and interrupts
* sys/phydat: clarify use of phydat::scale in phydat_fit
* sys/ztimer: clarify doc on clock ops
* doc/Coding_Convention: clarify: void return is allowed
* sys/event: add missing precondition to doc

Build System / Tooling
----------------------

* RIOT now defaults to C11
* RIOT now compiles with `-fwrapv`
+ compile_commands.json files can be produced, easing IDE integration
* riotboot USB DFU: Enter bootloader when board's bootloader button is pressed on power-up
* Make: enable SECONDEXPANSION globally

Testing
-------
+ Test utilities result output (turo) module for testing logic abstraction
+ Github integration of static tests using annotations completed

Kconfig
-------
+ Modules with dependency model added:
    + drivers/{l, m, n, o, p, q, r, s, t, u, v, w}*
    + pkg/c25519
    + pkg/cayenne-lpp
    + pkg/cifra
    + pkg/cn-cbor
    + pkg/driver_atwinc15x0
    + pkg/driver_bme680
    + pkg/emlearn
    + pkg/gemmlowp
    + pkg/hacl
    + pkg/heatshrink
    + pkg/jsmn
    + pkg/libb2
    + pkg/libcose
    + pkg/libfixmath
    + pkg/libhydrogen
    + pkg/lora-serialization
    + pkg/micro-ecc
    + pkg/microcoap
    + pkg/minmea
    + pkg/monocypher
    + pkg/nanocbor
    + pkg/nanopb
    + pkg/qDSA
    + pkg/qcbor
    + pkg/relic
    + pkg/talking_leds
    + pkg/tiny-asn1
    + pkg/tinycbor
    + pkg/tinycrypt
    + pkg/tlsf
    + pkg/tweetnacl
    + pkg/u8g2
    + pkg/ubasic
    + pkg/ucglib
    + pkg/umorse
    + pkg/utensor
    + pkg/yxml
    + sys/{crypto, hashes, random}
    + sys/analog_util
    + sys/app_metadata
    + sys/base64
    + sys/bitfield
    + sys/bloom
    + sys/cb_mux
    + sys/eepreg
    + sys/matstat
    + sys/memarray
    + sys/mineplex
    + sys/oneway
    + sys/posix_{sleep, inet}
    + sys/sema
    + sys/seq
    + sys/uri_parser
    + sys/timex
    + sys/ztimer

+ Modules with configurations exposed:
    + cpu/stm32f2f4f7: clock configuration
    + net/lorawan
    + sys/shell

+ Source EXTERNAL_MODULES configurations

Examples
--------
* examples/suit_update: update to aiocoap 0.4.1
* examples/dtls-sock: add multiple credentials
* examples/gnrc_border_router: enable ethernet uplink

API Changes
-----------

* mtd: rename mtd_write_page() -> mtd_write_page_raw(), add high-level mtd_write_page()
* sys/ztimer: rename required_pm_mode to block_pm_mode
* sock/async: add function to retrieve session object of current DTLS event
* sys/net/netopt: make NETOPT_TX_END_IRQ and friends read-only

Deprecations
============

Deprecations
------------
- core/lifo: will be removed in 2021.07

Removals
--------
- Remove deprecated features:
  - flashrom API (was deprecated since 2017, use periph/flashpage)
  - boards: remove AVRDUDE_PORT and PORT_BSL

Known issues
============

Networking related issues (48)
------------------------------
        USB cdc-ecm on nrf52
        packet buffer
        address
       assertion or completely without error
       chars
       address

Timer related issues (15)
-------------------------
       time.
       _xtimer_now()  and irq_disable()

Drivers related issues (15)
---------------------------
        timeout
        clock cycles
       supported

Native related issues (5)
-------------------------

Other platforms related issues (18)
-----------------------------------
        __WFI()
        (not previous)
       CS

Build system related issues (14)
--------------------------------
        evaluation
       image
       value

Other issues (57)
-----------------
        on stm32wb
        ports
        LLVM
        depending on code layout in flash
        esp32-wroom-32
        shell after flashing with J-Link
        10
       static_asserts in the same scope
       everywhere

There are 172 known issues in this release

Fixed Issues since the last release (2021.01)
=============================================

16 fixed issues since last release (2021.01)

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

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

46bc55f

2021-05-06 21:17

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2021.04-RC4

cdb41a9

2021-05-06 14:10

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