Zephyr Kernel 1.8.0 - Zephyr

.. _zephyr_1.8:

Zephyr Kernel 1.8.0 ####################

We are pleased to announce the release of Zephyr kernel version 1.8.0.

Major enhancements with this release include:

Tickless kernel
IP Stack improvements
Bluetooth 5.0 features
Ecosystem: Tracing, debugging support through third-party tools (openocd, Segger Systemview)
Improved build support on Mac and Windows development environments
Xtensa GCC support
Initial implementation of MMU/MPU support
Expanded device support

The following sections provide detailed lists of changes by component.

Kernel

Use k_cycle_get_32 instead of sys_cycle_get_32 for Kernel
Added k_panic() and k_oops() APIs for Kernel
Added k_thread_create() API for Kernel
Added k_queue API for Kernel
Add tickless kernel support

Architectures

arm: Update core to use struct k_thread
arm: Added ARM MPU support
dts: Added ARM CMSDK support
arm: Added Initial support for NXP MPU
arm: Added Device Tree Support for nRF52832 SoC based boards
arm: Fixed nRF52840-QIAA SoC support for device tree
arm: Added Device Tree Support for nRF52840 SoC & boards
arm: Added Device Tree Support for nRF51822 SoC & boards
dts: Introduced st/mem.h for FLASH & SRAM sizes
dts: Put IRQ priority into the interrupt property
arm: Support for MKL25Z soc
arm: Added FPU support
x86: defined MMU data structures
Support for ARC EM Starter Kit version 2.3 added

Boards

Added qemu_xtensa board definition
Added a more informative page fault handler x86 board
xtensa: build similar to other Zephyr arches
Define MMU data structures for x86 board
Added support for board disco_l475_iot1
Added STM32F413 Nucleo board
Added support for the CC3220SF_LAUNCHXL board
Support for new ARM board FRDM-KL25Z
arduino_101 board enable GPIO by default
boards: convert to using newly introduced integer sized types
arm: Added support for Nucleo L432KC board
arm: Added support for STM32L496G Discovery board
arm: Added support for STM32F469I-DISCO board
BBC micro:bit: Added driver & API for the 5x5 LED display

Drivers and Sensors

UART interrupt-driver API is better defined
Support for pull-style console API
nRF5 IEEE 802.15.4 radio driver added
KW41Z IEEE 802.15.4 radio driver added
Added MCUX TRNG driver
Added support for the SiFive Freedom E310 pinmux driver
drivers/sensor: Convert formatter strings to use PRI defines
Added lps22hb sensor driver
Added lsm6dsl sensor driver
Added heart rate sensor driver
Added support for max30101 heart rate sensor
Added support for lis2dh accelerometer

Networking

HTTPS server support added
HTTP Basic-Auth support added
IPv6 fragmentation support added
Add block wise support to CoAP for well-known response
Big refactoring of network buffer handling
Start to collect TCP statistics if enabled in config
IEEE 802.15.4 security support added
DNS resolver sample application added
IPv6 multicast listener (MLDv2) support added
NATS protocol sample application added
HTTP client and server connectivity fixes
Network samples Coverity fixes
Network samples llvm compiler warning fixes
MQTT publisher connectivity fixes
6lo IPv6 header compression fixes
CoAP connectivity fixes
DHCPv4 connectivity fixes
TCP connectivity fixes
DNS documentation and connectivity fixes
IPv6 connectivity fixes
IPv4 ARP fixes
IEEE 802.15.4 configuration tweaking fixes
Remove ORFD (Overly Reduced Function Device) 802.15.4 support
Network offloading driver fixes
Fix various memory leaks
Properly check TCP and UDP checksum before accepting packet
Start RX and TX network threads in proper order
Network samples documentation fixes and clarifications
RPL mesh routing fixes
Network link (MAC) address fixes

Bluetooth

Host: Added ATT and SMP packet tracking for flow control enforcement
Host: GATT database changed to a linked list in preparation for dynamic allocation
Bluetooth 5.0: The Controller reports itself as 5.0-capable
Bluetooth 5.0: Introduced Channel Selection Algorithm #2 support
Bluetooth 5.0: Added Multiple PHY support, both 2Mbit/s and long-range coded
Bluetooth 5.0: Integrated Scan Request notifications
Controller: Added Low Duty Cycle Directed Advertising support
Controller: Added Scan duplicate filtering support
Controller: Enforced complete role separation in the controller for smaller builds
Controller: Introduced Advanced Controller configuration with several new Kconfig options
Controller: Changed the radio interrupts to direct ISRs to reduce interrupt latency
Added HCI Controller to Host flow control support in both Host and Controller
BR/EDR: Added HFP (e)SCO audio channel establishment support
BR/EDR: Added support for a functional SDP server

Build and Infrastructure

Support building host tools
Added separate DTS target
Added support for MSYS2
Use -O2 instead of -Os for ARC with SDK 0.9

Libraries

Added library for software driven I2C
Created a HTTP library
Added HTTP server library support
Added minimal JSON library
Update TinyCrypt to version 0.2.6
Added minimal JSON library

HALs

Added Atmel SAM family I2C (TWIHS) driver
Added Atmel SAM serial (UART) driver
Added WDT driver for Atmel SAM SoCs
Added Atmel SAM4S SoC support
Imported Nordic 802.15.4 radio driver
Added Initial support for NXP MPU
Updated QMSI to 1.4 RC4
Added FPU support
Added basic support for STM32F413
Introduced STM32F4x DMA driver
pinmux: stm32: Added support for Nucleo L432KC
Added support for STM32L496G Discovery board
Added dts for STM32F407
Added support for STM32F4DISCOVERY Board
Added support for STM32F469XI
Added support for STM32F469I-DISCO

Documentation

Board documentation added for new board ports
Added a board porting guide
Added security sections to porting and user guides
Continued migration of wiki.zephyrproject.org material to website and github wiki
Improved CSS formatting and appearance of generated documents
Added breadcrumb navigation header with kernel version number
Updated getting started setup guides for Linux, Windows, and macOS
Updates and additions to follow new and updated kernel features
Broken link and spelling check scans
Removed deprecated kernel documentation (pre 1.6 release) from website (still available in git repo if needed)

Tests and Samples

Added test to verify same tick timeout expiry order
Added clock_test for kernel
Added tickless tests
Added a simple CC2520 crypto dev test
Added combined observer & broadcaster app for Bluetooth samples
Added support to wait both IPv4 and IPv6
Enabled tickless kernel option in some apps

JIRA Related Items

.. comment List derived from Jira query: ...

ZEP-248 - Add a BOARD/SOC porting guide
ZEP-339 - Tickless Kernel
ZEP-540 - add APIs for asynchronous transfer callbacks
ZEP-628 - Validate RPL Routing node support
ZEP-638 - feature to consider: flag missing functionality at build time when possible
ZEP-720 - Add MAX30101 heart rate sensor driver
ZEP-828 - IPv6 - Multicast Join/Leave Support
ZEP-843 - Unified assert/unrecoverable error infrastructure
ZEP-888 - 802.15.4 - Security support
ZEP-932 - Adapt kernel sample & test projects
ZEP-948 - Revisit the timeslicing algorithm
ZEP-973 - Remove deprecated API related to device PM functions and DEVICE_ and SYS_* macros
ZEP-1028 - shrink k_block struct size
ZEP-1032 - IPSP router role support
ZEP-1169 - Sample mbedDTLS DTLS client stability on ethernet driver
ZEP-1171 - Event group kernel APIs
ZEP-1280 - Provide Event Queues Object
ZEP-1313 - porting and user guides must include a security section
ZEP-1326 - Clean up _THREAD_xxx APIs
ZEP-1388 - Add support for KW40 SoC
ZEP-1391 - Add support for Hexiwear KW40
ZEP-1392 - Add FXAS21002 gyroscope sensor driver
ZEP-1435 - Improve Quark SE C1000 ARC Floating Point Performance
ZEP-1438 - AIO: AIO Comparator is not stable on D2000 and Arduino101
ZEP-1463 - Add Zephyr Support in segger SystemView
ZEP-1500 - net/mqtt: Test case for the MQTT high-level API
ZEP-1528 - Provide template for multi-core applications
ZEP-1529 - Unable to exit menuconfig
ZEP-1530 - Hotkeys for the menu at the bottom of menuconfig sometimes doesn't work
ZEP-1568 - Replace arm cortex_m scs and scb functionality with direct CMSIS-core calls
ZEP-1586 - menuconfig: Backspace is broken
ZEP-1599 - printk() support for the '-' indicator in format string (left justifier)
ZEP-1607 - JSON encoding/decoding library
ZEP-1621 - Stack Monitoring
ZEP-1631 - Ability to use k_mem_pool_alloc (or similar API) from ISR
ZEP-1684 - Add Atmel SAM family watchdog (WDT) driver
ZEP-1695 - Support ADXL362 sensor
ZEP-1698 - BME280 support for SPI communication
ZEP-1711 - xtensa build defines Kconfigs with lowercase names
ZEP-1718 - support for IPv6 fragmentation
ZEP-1719 - TCP does not work with 6lo
ZEP-1721 - many TinyCrypt test cases only run on ARM and x86
ZEP-1722 - xtensa: TinyCrypt does not build
ZEP-1735 - Controller to Host flow control
ZEP-1759 - All python scripts needed for build should be moved to python 3 to minimize dependencies
ZEP-1761 - K_MEM_POOL_DEFINE build error "invalid register name" when built with llvm/icx from ISSM toolchain
ZEP-1769 - Implement Set Event Mask and LE Set Event Mask commands
ZEP-1772 - re-introduce controller to host flow control
ZEP-1776 - sending LE COC data from RX thread can lead to deadlock
ZEP-1785 - Tinytile: Flashing not supported with this board
ZEP-1788 - [REG] bt_enable: No HCI driver registered
ZEP-1800 - Update external mbed TLS library to latest version (2.4.2)
ZEP-1812 - Add tickless kernel support in HPET timer
ZEP-1816 - Add tickless kernel support in LOAPIC timer
ZEP-1817 - Add tickless kernel support in ARCV2 timer
ZEP-1818 - Add tickless kernel support in cortex_m_systick timer
ZEP-1821 - Update PM apps to use mili/micro seconds instead of ticks
ZEP-1823 - Improved Benchmarks
ZEP-1825 - Context Switching KPI
ZEP-1836 - Expose current ecb_encrypt() as bt_encrypt() so host can directly access it
ZEP-1856 - remove legacy micro/nano kernel APIs
ZEP-1857 - Build warnings [-Wpointer-sign] with LLVM/icx (bluetooth_handsfree)
ZEP-1866 - Add Atmel SAM family I2C (TWIHS) driver
ZEP-1880 - "samples/grove/temperature": warning raised when generating configure file
ZEP-1886 - Build warnings [-Wpointer-sign] with LLVM/icx (tests/net/nbuf)
ZEP-1887 - Build warnings [-Wpointer-sign] with LLVM/icx (tests/drivers/spi/spi_basic_api)
ZEP-1893 - openocd: 'make flash' works with Zephyr SDK only and fails for all other toolchains
ZEP-1896 - [PTS] L2CAP/LE/CFC/BV-06-C
ZEP-1899 - Missing board documentation for xtensa/xt-sim
ZEP-1908 - Missing board documentation for arm/nucleo_96b_nitrogen
ZEP-1910 - Missing board documentation for arm/96b_carbon
ZEP-1927 - AIO: AIO_CMP_POL_FALL is triggered immediately after aio_cmp_configure
ZEP-1935 - Packet loss make RPL mesh more vulnerable
ZEP-1936 - tests/drivers/spi/spi_basic_api/testcase.ini#test_spi - Assertion Fail
ZEP-1946 - Time to Next Event
ZEP-1955 - Nested interrupts crash on Xtensa architecture
ZEP-1959 - Add Atmel SAM family serial (UART) driver
ZEP-1965 - net-tools HEAD is broken for QEMU/TAP
ZEP-1966 - Doesn't seem to be able to both send and receive locally via local address
ZEP-1968 - "make mrproper" removes top-level dts/ dir, makes ARM builds fail afterwards
ZEP-1980 - Move app_kernel benchmark to unified kernel
ZEP-1984 - net_nbuf_append(), net_nbuf_append_bytes() have data integrity problems
ZEP-1990 - Basic support for the BBC micro:bit LED display
ZEP-1993 - Flowcontrol Required for CDC_ACM
ZEP-1995 - samples/subsys/console breaks xtensa build
ZEP-1997 - Crash during startup if co-processors are present
ZEP-2008 - Port tickless idle test to unified kernel and cleanup
ZEP-2009 - Port test_sleep test to unified kernel and cleanup
ZEP-2011 - Retrieve RPL node information through CoAP requests
ZEP-2012 - Fault in networking stack for cores that can't access unaligned memory
ZEP-2013 - dead object monitor code
ZEP-2014 - Default samples/subsys/shell/shell fails to build on QEMU RISCv32 / NIOS2
ZEP-2019 - Xtensa port does not compile if CONFIG_TICKLESS_IDLE is enabled
ZEP-2027 - Bluetooth Peripheral Sample won't pair with certain Android devices
ZEP-2029 - xtensa: irq_offload() doesn't work on XRC_D2PM
ZEP-2033 - Channel Selection Algorithm #2
ZEP-2034 - High Duty Cycle Non-Connectable Advertising
ZEP-2037 - Malformed echo response
ZEP-2048 - Change UART "baud-rate" property to "current-speed"
ZEP-2051 - Move away from C99 types to zephyr defined types
ZEP-2052 - arm: unhandled exceptions in thread take down entire system
ZEP-2055 - Add README.rst in the root of the project for github
ZEP-2057 - crash in tests/net/rpl on qemu_x86 causing intermittent sanitycheck failure
ZEP-2061 - samples/net/dns_resolve networking setup/README is confusing
ZEP-2064 - RFC: Making net_shell command handlers reusable
ZEP-2065 - struct dns_addrinfo has unused fields
ZEP-2066 - nitpick: SOCK_STREAM/SOCK_DGRAM values swapped compared to most OSes
ZEP-2069 - samples: net: dhcpv4_client: runs failed on frdm k64f board
ZEP-2070 - net pkt doesn't full unref after send a data form bluetooth's ipsp
ZEP-2076 - samples: net: coaps_server: build failed
ZEP-2077 - Fix IID when using CONFIG_NET_L2_BLUETOOTH_ZEP1656
ZEP-2080 - No reply from RPL node after 20-30 minutes.
ZEP-2092 - [NRF][BT] Makefile:946: recipe for target 'include/generated/generated_dts_board.h' failed
ZEP-2114 - tests/kernel/fatal : Fail for QC1000/arc
ZEP-2125 - Compilation error when UART1 port is enabled via menuconfig
ZEP-2132 - Build samples/bluetooth/hci_uart fail
ZEP-2138 - Static code scan (coverity) issues seen
ZEP-2143 - Compilation Error on Windows 10 with MSYS2
ZEP-2152 - Xtensa crashes on startup for cores with coprocessors
ZEP-2178 - Static code scan (coverity) issues seen