SILICON LABS Wi-SUN SDK Wireless Smart Ubiquitous Network User Guide
- May 15, 2024
- SILICON LABS
Table of Contents
SILICON LABS Wi-SUN SDK Wireless Smart Ubiquitous Network User Guide
Wireless Smart Ubiquitous Network (Wi-SUN) is the leading IPv6 sub-GHz mesh technology for smart city and smart utility applications. Wi-SUN brings Smart Ubiquitous Networks to service providers, utilities, municipalities/local government, and other enterprises, by enabling interoperable, multi-service, and secure wireless mesh networks. Wi-SUN can be used for large-scale outdoor IoT wireless communication networks in a wide range of applications covering both line-powered and battery-powered nodes.
Silicon Labs’ Wi-SUN hardware is certified by the Wi-SUN Alliance, a global industry association devoted to seamless LPWAN connectivity. Wi-SUN builds upon open standard internet protocols (IP) and APIs, enabling developers to extend existing infrastructure platforms to add new capabilities. Built to scale with longrange capabilities, high-data throughput and IPv6 support, Wi- SUN simplifies wireless infrastructure for industrial applications and the evolution of smart cities.
These release notes cover SDK versions:
1.7.2.0 released March 13, 2024
1.7.1.0 released October 9, 2023
1.7.0.0 released July 26, 2023
1.6.0.0 released June 7, 2023
KEY FEATURES
Wi-SUN Stack
- EFR32FG28 support
- Connection time improvements
- LFN support improvements
Wi-SUN Applications
- Firmware over-the-air update
- Wi-SUN configurator update
Compatibility and Use Notices
For information about security updates and notices, see the Security chapter of the Gecko Platform Release notes installed with this SDK or on the TECH DOCS tab on https://www.silabs.com/developers/wi-sun-protocol- stack. Silicon Labs also strongly recommends that you subscribe to Security Advisories for up-to- date information. For instructions, or if you are new to the Silicon Labs Wi- SUN SDK, see Using This Release.
Compatible Compilers:
IAR Embedded Workbench for ARM (IAR-EWARM) version 9.20.4
- Using wine to build with the IarBuild.exe command line utility or IAR Embedded Workbench GUI on macOS or Linux could result in incorrect files being used due to collisions in wine’s hashing algorithm for generating short file names.
- Customers on macOS or Linux are advised not to build with IAR outside of Simplicity Studio. Customers who do should carefully verify that the correct files are being used.
GCC (The GNU Compiler Collection) version 10.3-2021.10, provided with Simplicity Studio.
Wi-SUN Stack
New Items
Added in release 1.7.2.0
- Added support for FAN1.1 Indian PHY configuration.
Added in release 1.7.0.0
- LFN devices are now able to enter in Energy Mode 2 (EM2) if the application allows it. For more information about the power management and the different energy modes, refer to the Power Manager section of the Gecko Platform documentation on docs.silabs.com.
- Added support for PAN-Wide IE
- Adapted EDFE support for FAN 1.1.
- Adapted MPL support for FAN 1.1.
Added in release 1.6.0.0
- Added a new API sl_wisun_set_lfn_parameters() that configures all the LFN-specific settings.
- Added a new API sl_wisun_set_lfn_support() that sets the maximum number of LFNs that can be connected to a single FFN.
- Added a new API sl_wisun_set_mode_switch() that supersedes sl_wisun_set_mode_switch().The old API is still available but it is recommended to move to the more recent one.
- Add a new API sl_wisun_set_pti_state() that enable the Packet Trace Interface (PTI). For more information about the PTI in the context of Wi-SUN, refer to Wi-SUN’s Getting Started section on docs.silabs.com.
- Implemented LFN LGTK rotation
- Added support for a non-standard OFDM 64QAM PHY.
- Added support for EFR32FG28
Improvements
Changed in release 1.7.0.0
- Major refactoring of the stack internal timekeeping. It used to be based on a global periodic tick timer relying on a very short expiration period. That tick timer was preventing sleepy devices to remain in EM2 for a long period.
Changed in release 1.6.0.0
- Optimized the reconnection of routers to an existing network: if configured to do so, the routers will now try to skip the scanning and authenticated step of the joining procedure.
Fixed Issues
Fixed in release 1.7.2.0
| ID # | Description |
|---|---|
| 1215083 | Fixed an invalid UDP socket closure when receiving a packet with an |
empty payload.
1199103| Fixed EDFE frames forwarding. A regression was causing conformance
test UNICAST-FWD-EDFE-1 to fail.
1199108| Fixed an issue causing DHCPv6 Identity Association ID (IAID) to be
inconsistent across restarts.
1202249| Fixed LFN key exchange ending condition. It was considered completed
before the reception of the last acknowledge, causing LPCS packet to be sent
too early.
1202254| Fixed LFN broadcast interval starting time estimation.
1203458| Fixed LPC packets source address using the PAN ID.
Fixed in release 1.7.1.0
| ID # | Description |
|---|---|
| 1182990 | Fixed an issue causing LFN LGTK and frame counter recovery from NVM |
after a reboot to be skipped.
11838171184251| Fixed an invalid memory access when receiving a multicast
packet with a full neighbor table.
1192678| Fixed LFN parent timeout. It was still partially relying on the FFN
timeout mechanism.
1192678| Fixed LFN address renewal.
11994591182571| Fixed an invalid memory access in the RCP. It could either
trigger an assert “ref_counter <= 0″ or call free() on an invalid memory
section.
1187522| Fixed an issue causing a mis-calculation of the ETX.
1171702| Fixed an issue causing an invalid memory access when starting the SoC
border router with an invalid PHY configuration
1169705| Added missing Node Role KDE. Routers not supporting LFN parenting
were missing the information element and were considered as FAN1.0 devices by
Silicon Labs border routers.
1182342| Fixed an interoperability issue when using JP regulatory domain.
1182584| Fixed a race between FHSS and ND causing an invalid memory access
when disconnecting itself or an LFN child.
1183110| Fixed FFN LGTK acquisition. FFN were performing a full 4-way
handshake instead of a shorter 2-way handshake.
1185038| Fixed an issue causing DHCP lease renewal to happen too often.
1194089| Fixed an issue causing an invalid memory access when starting the
stack without any certificate.
Fixed in release 1.7.0.0
| ID # | Description |
|---|---|
| 1146094 | Frame counters were not increased on retries. |
| 1112287 | Fixed an issue causing UDP packets to be silently dropped. This was |
caused by an inappropriate management of fragmented packets.
1116119| Fixed an issue causing a suitable neighbor to be refused as a
potential parent. Data packets missing a US-IE were refused when they should
have been accepted. The stack was not keeping track of the US-IE received
during the authentication process. This was causing interoperability issues
with Nissin System routers.
1157424| Fixed an improper stack initialization when used outside of a project
generated with SLC.
1151086| Fixed an issue causing a memory corruption when disconnecting LFN.
Fixed in release 1.6.0.0
| ID # | Description |
|---|---|
| 1120635 | Fixed an issue that could cause acknowlges to be sent to the wrong |
channel.
11137731130990| Fixed several issues that could cause an assert after a call
to sl_wisun_disconnect().
1110318| Fixed an issue that could cause a mutex to be kept for an undefined
period of time. It was causing devices to be indefinitely stalled.
Known Issues in the Current Release
Issues in bold were added since the previous release.
| ID # | Description | Workaround |
|---|---|---|
| 1119464 | Packets sent when FSK FEC is enabled can infringe ARIB regulation. |
Until this problem has been addressed correctly, the stack will refuse to
start if both ARIB enforcement and FEC are enabled.
1067978| Packets sent using a PHY with a bandwidth larger than the base PHY’s
bandwidth can infringe ARIB regulation.| Limit the communications when using
mode switch with ARIB enforcement enabled
1176014| FG25 asserts with a RAIL_ASSERT_FAILED_RTCC_SYNC_STALE_DATA error
code when entering EM2| Do not allow the power manager to go to EM2 by adding
a requirement on EM1 in the application.
Deprecated Items
None
Removed Items
None
Wi-SUN Applications
New Items
Added in release 1.6.0.0
- Wi-SUN DFU
- FTP/TFTP
- CoAP status notification service
- Gecko bootloader
- Settings for LFN devices
- Collectors pull LFN Meters data based on a configurable schedule
Improvements
Changed in release 1.6.0.0
- Network Analyzer: SUN OFDM Support
- Wi-SUN Configurator
- LFN support
- Certification generation
- CLI can be turned ON/OFF completely
- Socket handler refactor
- Memory Optimization
- Aligned the router’s and border router’s CLI commands
Fixed Issues
Fixed in release 1.7.2.0
| ID # | Description |
|---|---|
| 1210967 | Border Router SoC: Fixed an error causing a hard fault when |
connecting more than 22 routers directly to the border router SoC.
Fixed in release 1.7.1.0
| ID # | Description |
|---|---|
| 1148156 | Removed the device_type setting from the SoC Border Router |
application. It can only be started as a border router.
Fixed in release 1.6.0.0
| ID # | Description |
|---|---|
| 1106878 | Applications override ping task stack size. |
| 1106861 | Race condition in recvfrom(). |
| 1099841 | Stack overflow in Ping component. |
| 1134408 | Event flag handling for FreeRTOS. |
| 1099260 | Wi-SUN – SoC Empty + app_core + app_setting – connection failed |
status:35.
Known Issues in the Current Release
Issues in bold were added since the previous release.
| ID # | Description | Workaround |
|---|---|---|
| 1067236 | The border router RCP SPI interface is unstable when used with a | |
| throughput higher than 1 Mbytes/s | The use of border router RCP SPI interface |
is not recommended for the time being.
| Simplicity Studio – Network Analyzer:
- Wi-SUN Encrypted Packets are not supported
- Undecoded frames (only after Ack) according to PTI issues on Series 2
|
Deprecated Items
None
Removed Items
None
Using This Release
This release contains the following
- Wi-SUN stack library
- Wi-SUN sample applications
- Wi-SUN border router pre-compiled demos
- Documentation-*
If you are a first time user, see https://docs.silabs.com/wisun/latest/wisun- getting-started-overview/
Installation and Use
The Wi-SUN SDK is provided as part of the Gecko SDK (GSDK), the suite of Silicon Labs SDKs. To quickly get started with the GSDK, install Simplicity Studio 5, which will set up your development environment and walk you through GSDK installation. Simplicity Studio 5 includes everything needed for IoT product development with Silicon Labs devices, including a resource and project launcher, software configuration tools, full IDE with GNU toolchain, and analysis tools. Installation instructions are provided in the online Simplicity Studio 5 User’s Guide.
Alternatively, Gecko SDK may be installed manually by downloading or cloning the latest from GitHub. See https://github.com/SiliconLabs/gecko_sdk for more information.
Simplicity Studio installs the GSDK by default in:
- (Windows): C:\Users\\SimplicityStudio\SDKs\gecko_sdk
- (MacOS): /Users//SimplicityStudio/SDKs/gecko_sdk
Documentation specific to the SDK version is installed with the SDK.
Security Information
Secure Vault Integration
This version of the stack does not integrate Secure Vault Key Management.
Security Advisories
To subscribe to Security Advisories, log in to the Silicon Labs customer
portal, then select Account Home. Click HOME to go to the portal home page and
then click the Manage Notifications tile. Make sure that ‘Software/Security
Advisory Notices & Product ChangeNotices (PCNs)’ is checked, and that you are
subscribed at minimum for your platform and protocol. Click Save to save any
changes.
Support
Development Kit customers are eligible for training and technical support. Contact Silicon Laboratories support at http://www.silabs.com/support.
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Disclaimer
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References
- Software Developer Docs - Silicon Labs
- Silicon Labs
- Silicon Labs
- About Us - Silicon Labs
- Silicon Labs Community
- Internet of Things (IoT) - Silicon Labs
- Simplicity Studio - Silicon Labs
- Technical Support - Silicon Labs
- Introduction - latest - Wi-SUN Silicon Labs
- GitHub - SiliconLabs/gecko_sdk: The Gecko SDK (GSDK) combines all Silicon Labs 32-bit IoT product software development kits (SDKs) based on Gecko Platform into a single, integrated SDK.
- Wi-SUN Protocol Stack - Silicon Labs
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