Releases · zephyrproject-rtos/zephyr

We are pleased to announce the release of Zephyr kernel version 1.7.0.
This release continues refinement of the unified kernel introduced with
the 1.6.0 kernel release, simplifying the overall Zephyr architecture
and programming interfaces. This is the last release that will support
the deprecated legacy nano- and micro-kernel APIs found in the 1.5.0
release and earlier.

This release introduces a new native IP stack, replacing the legacy uIP
stack, maintaining the legacy functionality, adding additional
capabilities, and allowing future improvements.

We have introduced support for the RISC V and Xtensa architectures and
now support 6 architectures in total.

Device tree support for ARM based boards added. The initial device tree
support includes flash/sram base address and UART devices. Board support
includes NXP Kinetis based SoCs, ARM Beetle, TI CC3200 LaunchXL, and
STML32L476 based SoCs. Plan is to add support for other architectures
and expand device support in upcoming Zephyr releases.

The following sections provide a detailed list of changes, by component,
since kernel version 1.6.0.

Kernel

Introduction of k_poll API: k_poll() is similar to the
POSIX poll() API in spirit in that it allows a single thread to
monitor multiple events without actively polling them, but rather
pending for one or more to become ready.
Optimized memory use of some thread fields
Remove usage of micro/nano kernel terminology from kernel code and
introduced a legacy option to enable/disable legacy APIs.
(using legacy.h)

Architectures

ARM: Added support for device tree
ARM: Fixed exception priority access on Cortex M0(+)
ARM: Refactored to use CMSIS

Boards

Added ARM MPS2_AN385 board
Added Atmel SAM E70 Xplained board
Added Nordic pca10056 PDK board
Added NXP FRDM-KW41Z board
Added ST Nucleo-F334R8, Nucleo-L476G, STM3210C-EVAL, and
STM32373C-EVAL boards
Added Panther and tinyTILE boards, based on Quark SE C1000 and Intel
Curie
Added support for Zedboard Pulpino, a RISC V based board
Added Qemu target for RISC V and a simulator target for the
Xtensa architecture.

Drivers and Sensors

Added Atmel SAM pmc, gpio, uart, and ethernet drivers
Added STM32F3x clock, flash, gpio, pinmux drivers
Added stm32cube pwm and clock drivers
Added cc3200 gpio driver
Added mcr20a ieee802154 driver
Added mcux pinmux, gpio, uart, and spi drivers
Added Beetle clock control and watchdog drivers

Networking

This version removes the legacy uIP stack and introduces a new native IP
stack. Because of this there is lot of changes in the code base. The
native IP stack will support the same functionality as the legacy IP
stack found in 1.6, and add new networking features which are described
below.

IP stack code is moved to subsys/net/ip directory.
IP stack supports both IPv6 and IPv4, and they can be
enabled simultaneously.
Multiple network technologies like Bluetooth IPSP and IEEE 802.15.4
can be enabled simultaneously. No routing functionality is provided
by IP stack between enabled network technologies, applications need
to decide where to send the network packets.
Network technologies are abstracted in IP layer 2 (L2) and presented
to rest of the system as network interfaces. There exists L2 driver
for Ethernet, Bluetooth and IEEE 802.15.4.
Created Bluetooth Internet Protocol Support Profile (IPSP) support.
It will provide IPv6 connection over Bluetooth connection oriented
channel (L2CAP).
Created DHCPv4 support.
Created CoAP implementation called ZoAP which replaces uIP
based one.
Updated 6Lo implementation to support both Bluetooth and IEEE
802.15.4
Created application API (net_context) for creating connections and
transferring data to external systems.
Added sample application (wpanusb) for exporting IEEE 802.15.4 radio
over USB to external operating systems like Linux.
Added DNS client library.
Updated TCP implementation.
Created MQTT publisher support.
Created network test generator (zperf).
Created telnet console support.
Created IRC client sample application.
Created HTTP server and client sample applications.
Created net-shell module for interacting with network sub-system.
Created ieee15_4 shell module for dedicated interaction with IEEE
802.15.4 Soft MAC.
Created network management API for generic network settings request
as well as a network event notification system (sender/listener).
Redesigned buffer & pool allocation API.

Bluetooth

Redesigned buffer pools for smaller memory consumption
Redesigned thread model for smaller memory consumption
Utilized new k_poll API to consolidate all TX threads into a single
one
Added more SDP functionality
Improved RFCOMM support
Reduced latencies in the Controller
Added SPI HCI driver

Libraries

Updated mbedTLS library
Updated TinyCrypt to version 0.2.5

HALs

Updated FAT FS to rev 0.12b
Updated Nordic MDK header files
Updated QMSI to 1.4 RC3
Imported Atmel SDK (ASF) for SAM E70 and SAM3X
Imported Nordic SDK HAL and 802.15.4 radio driver
Renamed NXP KSDK to MCUX
Imported NXP MCUX for KW41Z
Imported Segger J-Link RTT library
Imported stm32cube for F4 and L4

Documentation

General improvements and additions to kernel component docs
Moved supported board information back to the website site.
New website documentation theme to go with the new
zephyrproject.org site.
New local-content generation theme (read-the-docs)
General spelling checks and organizational improvements.
Site-wide glossary added.
Porting guides added.
Sample README files converted to documents included in the website.
Improved consistency of boards and samples
documentation.

JIRA Related Items

ZEP-19 - IPSP node support
ZEP-145 - no 'make flash' for Arduino Due
ZEP-328 - HW Encryption Abstraction
ZEP-359 - Move QEMU handling to a central location
ZEP-365 - Zephyr's MQTT library
ZEP-437 - TCP/IP API
ZEP-513 - extern declarations of small microkernel objects in
designated sections require __attribute__((section)) in
gp-enabled systems
ZEP-591 - MQTT Port to New IP Stack
ZEP-604 - In coap_server sample app, CoAP resource separate is not
able to send separate response
ZEP-613 - TCP/UDP client and server mode functionality
ZEP-641 - Bluetooth Eddystone sample does not correctly implement
Eddystone beacon
ZEP-648 - New CoAP Implementation
ZEP-664 - Extend spi_qmsi_ss driver to support save/restore
peripheral context
ZEP-665 - Extend gpio_qmsi_ss driver to support save/restore
peripheral context
ZEP-666 - Extend i2c_qmsi_ss driver to support save/restore
peripheral context
ZEP-667 - Extend adc_qmsi_ss driver to support save/restore
peripheral context
ZEP-686 - docs: Info in Application Development Primer and
Developing an Application and the Build System is largely duplicated
ZEP-706 - cannot set debug breakpoints on ARC side of Arduino 101
ZEP-719 - Add ksdk uart shim driver
ZEP-734 - Port AES-CMAC-PRF-128 [RFC 4615] encryption library for
Thread support
ZEP-742 - nRF5x Series: System Clock driver using NRF_RTC
ZEP-744 - USB WebUSB
ZEP-748 - Enable mbedtls_sslclient sample to run on quark se board
ZEP-759 - Add preliminary support for Atmel SAM E70 (Cortex-M7)
chipset family and SAM E70 Xplained board
ZEP-788 - UDP
ZEP-789 - IPv4
ZEP-790 - ICMPv4
ZEP-791 - TCP
ZEP-792 - ARP
ZEP-793 - DNS Resolver
ZEP-794 - Requirements for Internet Hosts - Communication Layers
ZEP-796 - DHCPv4
ZEP-798 - IPv6
ZEP-799 - HTTP over TLS
ZEP-801 - DNS Extensions to support IPv6
ZEP-804 - IPv6 Addressing Architecture
ZEP-805 - Internet Control Message Protocol (ICMP) v6
ZEP-807 - Neighbor Discovery for IPv6
ZEP-808 - IPv6 Stateless Autoconfiguration (SLAAC)
ZEP-809 - IPv6 over 802.15.4
ZEP-811 - The Trickle Algorithm
ZEP-812 - Compression Format for IPv6 over 802.15.4
ZEP-813 - RPL: IPv6 Routing Protocol
ZEP-814 - Routing Metrics used in Path Selection
ZEP-815 - Objective Function Zero for RPL
ZEP-816 - Minimum Rank with Hysteresis (RPL)
ZEP-818 - CoAP working over the new IP stack
ZEP-820 - HTTP v1.1 Server Sample
ZEP-823 - New IP Stack - Documentation
ZEP-824 - Network Device Driver Porting Guide
ZEP-825 - Porting guide for old-to-new IP Stack APIs
ZEP-827 - HTTP Client sample application
ZEP-830 - ICMPv6 Parameter Problem Support
ZEP-832 - Hop-by-Hop option handling
ZEP-847 - Network protocols must be moved to subsys/net/lib
ZEP-854 - CoAP with DTLS sample
ZEP-859 - Migrate ENC28J60 driver to YAIP IP stack
ZEP-865 - convert filesystem sample to a runnable test
ZEP-872 - Unable to flash Zephyr on Arduino 101 using Ubuntu and
following wiki instructions
ZEP-873 - DMA API Update
ZEP-875 - 6LoWPAN - Context based compression support
ZEP-876 - 6LoWPAN - Offset based Reassembly of 802.15.4 packets
ZEP-879 - 6LoWPAN - Stateless Address Autoconfiguration
ZEP-882 - 6LoWPAN - IPv6 Next Header Compression
ZEP-883 - IP Stack L2 Interface Management API
ZEP-884 - 802.15.4 - CSMA-CA Radio protocol support
ZEP-885 - 802.15.4 - Beacon frame support
ZEP-886 - 80...

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Kernel

Architectures

Boards

Drivers and Sensors

Networking

Bluetooth

Libraries

HALs

Documentation

JIRA Related Items

Releases: zephyrproject-rtos/zephyr

Zephyr v1.8.0-rc2

Zephyr v1.8.0-rc1

Zephyr v1.7.1

Zephyr 1.6.1

v1.7.1-rc

v1.6.1-rc

Zephyr 1.7.0

Kernel

Architectures

Boards

Drivers and Sensors

Networking

Bluetooth

Libraries

HALs

Documentation

JIRA Related Items

v1.7.0-rc4

v1.7.0-rc3

v1.7.0-rc2