Zephyr Kernel 1.5.0¶

The Zephyr Engineering team is glad to announce the release of Zephyr Kernel 1.5.0. This is the first release to follow the 3-month release cadence. This release includes numerous fixes and support for major features. Additional changes include support for new drivers, sensors, and boards.

Major enhancements included with the release:

TCP Support
Integration of the Paho MQTT Library support with QoS
Flash Filesystem Support
Integration of the mbedTLS library for encryption
Improved BR/EDR support (for L2CAP, in particular).
Support for the Altera Nios II/f soft CPU architecture

A detailed list of changes since v1.4.0 by component follows:

Kernel¶

Added nano_fifo_put_list() APIs, which allows queuing a list of elements on a nanokernel FIFO.
Removed unused memory pool structure field.
Enhanced memory pool code.

Architectures¶

ARM: Updated to include floating point registers.
Altera Nios II/f soft CPU architecture support
- Internal Interrupt Controller
- Avalon Timer
- Avalon JTAG UART (polling mode) as default for qemu-system-nios2, and 16550 UART as default for Altera MAX10.

Boards¶

Added Nios II QEMU board.
Added configuration for Altera MAX10 FPGA.

Drivers and Sensors¶

Sensors: Added driver for I2C HMC5883L magnetometer.
Sensors: Added driver for I2C TMP112 temperature sensor.
Sensors: Added driver for MAX44009 light sensor.
Sensors: Added driver for LPS25HB.
HAL: Updated QMSI drivers to 1.1
Added DMA QMSI shim driver.
Added Quark SE USB device controller driver.
Added suspend/resume to QMSI drivers.
Added Guard for critical sections of the QMSI drivers.
Added Zephyr File System API.
Added driver for ENC28J60 Ethernet SPI module.

Networking¶

TCP Support
Connection handling fixes in IP stack.
Allow sending zero length user data IP packet.

Network Buffers

New net_buf_simple API for light-weight on-stack (or static) buffers where a net_buf (and its associated pool) is overkill. The net_buf API now uses as an internal implementation detail net_buf_simple.
Add support for network buffer fragmentation.
Add more net_buf big endian helpers.

Bluetooth¶

Multiple fixes & improvements to the nble driver.
New API for dealing with Out of Band data (like the local address).
Various smaller fixes & improvements in many places.

Build and Infrastructure¶

Added “qemugdb” target to start a local GDB on port 1234.
Added script to filter known issues in the build output.
Sanity: Added “-R” option to build all test with assertions.

Libraries¶

File system: Imported Open Source FAT FS 0.12a code.
Encryption: Imported mbedTLS library.
Encryption: Updated TinyCrypt library to 2.0.

Documentation¶

Fixed all the documentations warnings during build.
Fixed several typos, trademarks and grammar.
Moved all the boards documentation to the wiki.
Moved Code Contribution documentation to the wiki.
Added package “ncurses” to the list of requirements.
Updated macOS instructions.

Test and Samples¶

Samples: Replaced old debug macro to use new SYS_LOG macro.
Added TMP112 sensor application.
Added Quark SE power management sample application.
Added DMA memory to memory transfer sample.
Added sample for MAX44009 light sensor.
Added MQTT publisher and subscriber samples.
Added mbedTLS sample client.

JIRA Related Items¶

Stories¶

ZEP-49 - x86: unify separate SysV and IAMCU code
ZEP-55 - enable nanokernel test_context on ARC
ZEP-58 - investigate use of -fomit-frame-pointer
ZEP-60 - irq priorities should be rebased to safe values
ZEP-69 - Extend PWM API to use arbitrary unit of time
ZEP-203 - clean up APIs for static exceptions
ZEP-225 - Add kernel API to put SoC to Deep Sleep (DS) State
ZEP-226 - Update sample PMA to support device suspend/resume
ZEP-227 - Add kernel API to put SoC to Low Power State (LPS)
ZEP-228 - File system interface designed after POSIX
ZEP-232 - Support for USB communications device class ACM
ZEP-234 - provide a direct memory access (DMA) interface
ZEP-243 - Create Wiki Structure for Boards
ZEP-249 - nios2: Enable altera_max10 board in sanitycheck runs for nanokernel
ZEP-254 - nios2: define NANO_ESF struct and populate _default_esf
ZEP-270 - nios2: determine optimal value for PERFOPT_ALIGN
ZEP-271 - nios2: enable microkernel & test cases
ZEP-272 - nios2: add global pointer support
ZEP-273 - nios2: implement flashing scripts
ZEP-274 - nios2: document GDB debugging procedure
ZEP-275 - nios2: scope support for instruction/data caches
ZEP-279 - nios2: demonstrate nanokernel hello world
ZEP-285 - FAT filesystem support on top of SPI Flash
ZEP-289 - nios2: implement kernel_event_logger
ZEP-291 - Driver for the ENC28J60 ethernet device
ZEP-304 - Investigate QEMU support for Nios II
ZEP-327 - Encryption Libraries needed for Thread support
ZEP-340 - TLS/SSL
ZEP-354 - Provide a DMA driver for Quark SE core
ZEP-356 - DMA device support
ZEP-357 - Support for the MAX44009 sensor
ZEP-358 - Add support for TMP112 sensor
ZEP-412 - Add driver API reentrancy support to RTC driver for LMT
ZEP-414 - Add driver API reentrancy support to flash driver
ZEP-415 - aaU, I want to use the NATS messaging protocol to send sensor data to the cloud
ZEP-416 - MQTT client capability: QoS1, QoS2
ZEP-424 - AON counter driver needs to add driver API reentrancy support
ZEP-430 - Add driver API reentrancy support to PWM shim driver
ZEP-434 - Driver for HMC5883L magnetometer
ZEP-440 - Add driver API reentrancy support to WDT shim driver
ZEP-441 - Add driver API reentrancy support to GPIO shim drivers
ZEP-489 - nios2: handle unimplemented multiply/divide instructions
ZEP-500 - Domain Name System client library
ZEP-506 - nios2: support bare metal boot and XIP on Altera MAX10
ZEP-511 - Add Deep Sleep support in PMA
ZEP-512 - Add suspend/resume support for some core devices to enable Deep Sleep support in PMA
ZEP-541 - Integrate QMSI releases to Zephyr
ZEP-567 - netz sample code
ZEP-568 - MQTT QoS sample app
ZEP-573 - IoT applications must use netz API
ZEP-590 - Update Zephyr’s TinyCrypt to version 2.0
ZEP-643 - Add file system API documentation
ZEP-650 - Quark SE: Implement PM reference application
ZEP-652 - QMSI shim driver: RTC: Implement suspend and resume callbacks
ZEP-655 - QMSI shim driver: PWM: Implement suspend and resume callbacks
ZEP-658 - QMSI shim driver: GPIO: Implement suspend and resume callbacks
ZEP-659 - QMSI shim driver: UART: Implement suspend and resume callbacks
ZEP-662 - QMSI shim driver: Pinmux: Implement suspend and resume callbacks

Epic¶

ZEP-278 - Enable Nios II CPU on Altera Max10
ZEP-284 - Flash Filesystem Support
ZEP-305 - Device Suspend / Resume infrastructure
ZEP-306 - PWM Enabling
ZEP-406 - Drivers shall be re-entrant

Bug¶

ZEP-68 - Final image contains duplicates of some routines
ZEP-156 - PWM Set Value API behaves incorrectly
ZEP-158 - PWM Set Duty Cycle API does not work
ZEP-180 - make menuconfig user provided options are ignored at building time
ZEP-187 - BLE APIs are not documented
ZEP-218 - [drivers/nble][PTS_TEST] Fix responding with the wrong error codes to the Prepare Write Request
ZEP-221 - [drivers/nble][PTS_TEST] Implement Execute Write Request handler
ZEP-369 - When building out of the tree, application object files are not placed into outdir
ZEP-379 - _k_command_stack may be improperly initialized when debugging
ZEP-384 - D2000 hangs after I2C communication with BMC150 sensor
ZEP-401 - PWM driver turns off pin if off time is 0 in set_values
ZEP-423 - Quark D2000 CRB documentation should include instructions to flash bootloader
ZEP-435 - Ethernet/IPv4/TCP: ip_buf_appdatalen returns wrong values
ZEP-456 - doc: IDT security section disappeared
ZEP-457 - doc: contribute/doxygen/typedefs.rst: examples files are broken
ZEP-459 - doc: kconfig reference entries in HTML are lacking a title
ZEP-460 - doc: document parameters of DEVICE* macros
ZEP-461 - Release 1.4.0 has broken the BMI160 sample as well as an application based on it
ZEP-463 - Getting started guide “next” link doesn’t take you to “Checking Out the Source Code Anonymously” section
ZEP-469 - Ethernet/IPv4/TCP: net_receive & net_reply in server mode
ZEP-474 - ND: Neighbor cache is not getting cleared
ZEP-475 - Issue with timer callback routine: Condition checked is incorrect
ZEP-478 - Linux setup docs missing step to install curses development package for Fedora
ZEP-497 - Ethernet/IPv4/TCP: failed to get free buffer
ZEP-499 - TMP007 driver returns invalid values for negative temperature
ZEP-514 - memory corruption in microkernel memory pool defrag()
ZEP-516 - Ubuntu setup instructions missing ‘upgrade’ step
ZEP-518 - SPI not working on Arduino101
ZEP-522 - TCP/client-mode: disconnect
ZEP-523 - FIFOs defined by DEFINE_FIFO macro use the same memory buffer
ZEP-525 - srctree changes are breaking applications
ZEP-526 - build “kernel event logger” sample app failed for BOARD=quark_d2000_crb
ZEP-534 - Scan for consistent use of “platform/board/SoC” in documentation
ZEP-537 - doc: create external wiki page “Maintainers”
ZEP-545 - Wrong default value of CONFIG_ADC_QMSI_SAMPLE_WIDTH for x86 QMSI ADC
ZEP-547 - [nble] Failed to start encryption after reconnection
ZEP-554 - samples/drivers/aon_counter check README file
ZEP-555 - correct libgcc not getting linked for CONFIG_FLOAT=y on ARM
ZEP-556 - System hangs during I2C transfer
ZEP-565 - Ethernet/IPv4/TCP: last commits are breaking network support
ZEP-571 - ARC kernel BAT failed due to race in nested interrupts
ZEP-572 - X86 kernel BAT failed: Kernel Allocation Failure!
ZEP-575 - Ethernet/IPv4/UDP: ip_buf_appdatalen returns wrong values
ZEP-595 - UART: usb simulated uart doesn’t work in poll mode
ZEP-598 - CoAP Link format filtering is not supported
ZEP-611 - Links on downloads page are not named consistently
ZEP-616 - OS X setup instructions not working on El Capitan
ZEP-617 - MQTT samples build fail because netz.h file missing.
ZEP-621 - samples/static_lib: fatal error: stdio.h: No such file or directory
ZEP-623 - MQTT sample mqtt.h missing “mqtt_unsubscribe” function
ZEP-632 - MQTT fail to re-connect to the broker.
ZEP-633 - samples/usb/cdc_acm: undefined reference to ‘uart_qmsi_pm_save_config’
ZEP-642 - Inconsistent interpretation of pwm_pin_set_values arguments among drivers
ZEP-645 - ARC QMSI ADC shim driver fails to read sample data
ZEP-646 - I2C fail to read GY2561 sensor when GY2561 & GY271 sensor are attached to I2C bus.
ZEP-647 - Power management state storage should use GPS1 instead of GPS0
ZEP-669 - MQTT fail to pingreq if broker deliver topic to client but client doesn’t read it.
ZEP-673 - Sanity crashes and doesn’t kill qemu upon timeout
ZEP-679 - HMC5883L I2C Register Read Order
ZEP-681 - MQTT client sample throws too many warnings when build.
ZEP-687 - docs: Subsystems/Networking section is almost empty
ZEP-689 - Builds on em_starterkit fail
ZEP-695 - FatFs doesn’t compile using Newlib
ZEP-697 - samples/net/test_15_4 cannot be built by sanitycheck
ZEP-703 - USB sample apps are broken after QMSI update
ZEP-704 - test_atomic does not complete on ARC
ZEP-708 - tests/kernel/test_ipm fails on Arduino 101
ZEP-739 - warnings when building samples for quark_se devboard

Known issues¶

ZEP-517 - build on windows failed “zephyr/Makefile:869: *** multiple target patterns”
- No workaround, will fix in future release.
ZEP-711 - I2c: fails to write with mode fast plus
- No workaround need it, there is no support for high speed mode.
ZEP-724 - build on windows failed: ‘make: execvp: uname: File or path name too long’
- No workaround, will fix in future release.
ZEP-467 - Hang using UART and console.
- No workaround, will fix in future release.
ZEP-599 - Periodic call-back function for periodic REST resources is not getting invoked
- No workaround, will fix in future release.
ZEP-471 - Ethernet packet with multicast address is not working
- No workaround, will fix in future release.
ZEP-473 - Destination multicast address is not correct
- No workaround, will fix in future release.