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Gecko SDK

The Silicon Labs Gecko SDK (GSDK) is a single integrated package of 32-bit IoT product software development kits (SDKs) and Gecko platform. It is the primary tool for development in the Silicon Labs IoT Software ecosystem. It provides many powerful features to offer a seamless experience which includes ultra-low power consumption, strong network reliability, Industry-leading ability to support a large number of nodes, and abstraction of complex requirements like multiprotocol and pre-certification. The GSDK is covered by one of several different licenses with the default license of Master Software License Agreement (MSLA). Silicon Labs also extends over-the-air (OTA) software and security updates to remotely update the devices, minimize the maintenance cost and improve the end-user product experience.

An archive of all release notes associated with the latest version of the GSDK can be found here.

Gecko SDK Release Notes (4.1.0.0)

Latest Release - Q2/2022  (June 2022)

Gecko Platform Version 4.1.0.0

  • Initial release of CPC
  • Added support for EFR32xG24; MGM240, EFR32MR21 and FGM230
  • Several code size improvements related to Power Manager, HFXO Manager and em_crypto
  • Tools and Dependencies
    • Updated compiler support to GCC 10.3- 2021.10 and IAR 9.20.4
    • Updated CMSIS to version 5.8.0 Drivers
    • Added a new component to synchronize UART/PTI settings between WSTK mainboard and the radio board
    • Added support for Analog Joystick driver to use the joystick functionality on mainboard v2
  • Security
    • Mbed TLS is updated to version 3.1.0
    • Added software support for TrustZone, BETA quality
  • Bootloader
    • Jedec driver support for external SPI flash
    • A new sample app for devices with external SPI flash
Release Date Release Notes
2022 2022/06 Version 4.1.0.0 
2022/03 Version 4.0.2.0 
2022/01 Version 4.0.1.0 
2021 2021/12 Version 4.0.0.0 
2021/10 Version 3.2.3.0 
2021/09 Version 3.2.2.0 
2021/07 Version 3.2.1.0 
2021/06 Version 3.2.0.0 
2021/04 Version 3.1.2.0 
2021/01 Version 3.1.1.0 
2020 2020/12 Version 3.1.0.0 
2020/10 Version 3.0.2.0 
2020/09 Version 3.0.1.0 
2020/07 Version 3.0.0.2 

32-bit MCU Version 6.3.0.0

  • Added support for BRD2204C board
Release Date Release Notes
2022 2022/06 Version 6.3.0.0 
2022/03 Version 6.2.2.0 
2022/01 Version 6.2.1.0 
2021 2021/12 Version 6.2.0.0 
2021/10 Version 6.1.3.0 
2021/07 Version 6.1.1.0 
2021/06 Version 6.1.0.0 
2021/04 Version 6.0.2.0 
2021/01 Version 6.0.1.0 
2020 2020/12 Version 6.0.0.0 
2020/10 Version 5.10.2.0 
2020/09 Version 5.10.1.0 
2020/07 Version 5.10.0.2 

Bluetooth Version 4.0.0.0

  • Support added for Directed Advertising
  • Support added for L2CAP connection-oriented channel
  • Alpha Periodic Advertising Synchronization Transfer
  • Apploader merged with Bootloader as communication plugin
  • Alpha Dynamic Multiprotocol Bluetooth and multi-PAN 802.15.4 in RCP mode

 

Release Date Release Notes
2022 2022/06 Version 4.0.0.0 
2022/03 Version 3.3.2.0 
2022/01 Version 3.3.1.0 
2021 2021/12 Version 3.3.0.0 
2021/10 Version 3.2.4.0 
2021/09 Version 3.2.3.0 
2021/09 Version 3.2.2.0 
2021/07 Version 3.2.1.0 
2021/06 Version 3.2.0.0 
2021/04 Version 3.1.2.0 
2021/01 Version 3.1.1.0 
2020
2020/12 Version 3.1.0.0 
2020/10 Version 3.0.2.0 
2020/09 Version 3.0.1.0 
2020/07 Version 3.0.0.2 

Bluetooth Location Services Version 4.0.0.0

  • Support added for new dual-polarized antenna array board BRD4191A
Release Date Release Notes
2022 2022/06 Version 4.0.0.0 
2022/03 Version 3.3.2.0 
2022/01 Version 3.3.1.0 
2021 2021/12 Version 3.3.0.0 
2021/10 Version 3.2.4.0 
2021/09 Version 3.2.3.0 
2021/09 Version 3.2.2.0 
2021/07 Version 3.2.1.0 
2021/06 Version 3.2.0.0 
2021/04 Version 3.1.2.0 
 2020 2020/12 Version 3.1.0.0 

Bluetooth Mesh Version 3.0.0.0

  • Reduced project flash consumption by optimizing Mesh stack code size
  • Support added for xGM240P PCB Mod- ules and BG22/BGM220 Explorer Kits
  • Support added for GCC version 10.3- 2021.10 and IAR version 9.20.4
Release Date Release Notes
2022 2022/06 Version 3.0.0.0 
2022/03 Version 2.2.2.0 
2022/01 Version 2.2.1.0 
2021 2021/12 Version 2.2.0.0 
2021/10 Version 2.1.4.0 
2021/09 Version 2.1.3.0 
2021/09 Version 2.1.2.0 
2021/07 Version 2.1.1.0 
2021/06 Version 2.1.0.0 
2021/04 Version 2.0.2.0 
2021/01 Version 2.0.1.0 
2020 2020/12 Version 2.0.0.0 

Bluetooth Mesh ADK Version 3.1.4.0

  • Application min SDK version changed to Android 28 and iOS 12
  • Library min SDK version changed to Android 26 (no change to iOS)
  • IOP tests added
  • Simultaneous provisioning of multiple devices and simultaneous proxy ses- sions
  • Performance and stability improve- ments
Release Date Release Notes
2021 2021/10 Version 3.1.4.0 
2021/09 Version 3.1.3.0 
2021/07 Version 3.1.1.0 

OpenThread Version 2.1.0.0

  • Alpha SPI support for OpenThread RCP without CPC
  • Thread 1.2 and 1.3 support for OpenThread
  • Updated GCC compiler version to 10.3.1
  • Alpha Concurrent Multiprotocol Zigbee in NCP mode and OpenThread in RCP mode
  • Alpha Dynamic Multiprotocol Bluetooth and multi-PAN 802.15.4 in RCP mode
Release Date Release Notes
2022 2022/06 Version 2.1.0.0 
2022/03 Version 2.0.2.0 
2022/01 Version 2.0.1.0 
2021 2021/12 Version 2.0.0.0 
2021/10 Version 1.2.3.0 
2021/09 Version 1.2.2.0 
2021/07 Version 1.2.1.0 
2021/06 Version 1.2.0.0 
2021/04 Version 1.1.2.0 
2021/01 Version 1.1.1.0 
2020 2020/12 Version 1.1.0.0 
2020/10 Version 1.0.2.0 
2020/09 Version 1.0.1.0 
2020/07 Version 1.0.0.2 

Proprietary Flex Version 3.4.0.0

  • EFR32xG24 GA with Antenna Diversity support
  • FGM230S proprietary module GA
  • Secure Vault integration to Connectstack
  • BGM220 Range Test + DMP precompiled demo with EFR Connect Mobile Application
Release Date Release Notes
2022 2022/06 Version 3.4.0.0 
2022/03 Version 3.3.2.0 
2022/01 Version 3.3.1.0 
2021 2021/12 Version 3.3.0.0 
2021/10 Version 3.2.3.0 
2021/09 Version 3.2.2.0 
2021/07 Version 3.2.1.0 
2021/06 Version 3.2.0.0 
2021/04 Version 3.1.2.0 
2021/01 Version 3.1.1.0 
2020 2020/12 Version 3.1.0.0 
2020/10 Version 3.0.2.0 
2020/09 Version 3.0.1.0 
2020/07 Version 3.0.0.2 

Wi-SUN Version 1.3.0.0

  • FAN 1.0 certified Router & Border Router
  • iPerf throughput test tool
  • Wi-SUN Configurator
  • CLI for certification
  • ARIB T108 support
Release Date Release Notes
2022 2022/06 Version 1.3.0.0 
2022/03 Version 1.2.3.0 
2022/01 Version 1.2.1.0 
2021 2021/12 Version 1.2.0.0 
2021/10 Version 1.1.2.0 
2021/09 Version 1.1.1.0 
2021/07 Version 1.1.0.0 
2021/06 Version 1.0.1.0 

Zigbee EmberZNet Version 7.1.0.0

  • 2.4 GHz Zigbee Smart Energy support for xG24
  • 802.15.4 Signal Identifier and MAC CCA Mode 2 and 3 support for xG24
  • Zigbee Green Power Gateway Backup
  • Updated GCC and IAR Compiler Version
  • Alpha Concurrent Multiprotocol Zigbee in NCP mode and OpenThread in RCP mode
  • Alpha Dynamic Multiprotocol Blue-tooth and multi-PAN 802.15.4 in RCP mode

 

Release Date Release Notes
2022 2022/06 Version 7.1.0.0 
2022/03 Version 7.0.2.0 
2022/01 Version 7.0.1.0 
2021 2021/12 Version 7.0.0.0 
2021/10 Version 6.10.3.0 
2021/09 Version 6.10.2.0 
2021/07 Version 6.10.1.0 
2021/06 Version 6.10.0.0 
2021/04 Version 6.9.2.0 
2021/01 Version 6.9.1.0 
2020 2020/12 Version 6.9.0.0 
2020/10 Version 6.8.2.0 
2020/09 Version 6.8.1.0 
2020/07 Version 6.8.0.2 

Z-Wave and Z-Wave Long Range 700/800 SDK 7.18.0.0

  • Keyfob application
  • New Z-Wave 800 SDK containing preprogrammed radio boards for quick IoT demos and Z-Wave technology evaluations
  • Z-Wave 800 S2 protocol uses Secure Vault for key storage and hardware acceleration
  • White paper about large network performance
  • Serial API Controller and End Device source code available enabling customization of I/O etc.
  • Z-Wave Long Range supports now both 250 ms and 1000 ms wakeup beams
  • Improved SmartStart inclusion time on Z-Wave Long Range
  • Streamlined hardware dependencies in Z-Wave applications
  • Z-Wave Region stored in MFG token
  • Support of WSTK v2 mainboard BRD4002A
  • GCC Compiler 10.3
Release Date Release Notes
2022 2022/06 Version 7.18.0.0 
2022/03 Version 7.17.2.0 
2022/01 Version 7.17.1.0 
 2021 2021/10 Version 7.16.3.0 
2021/09 Version 7.16.2.0 
2021/06 Version 7.16.0.0 
2021/04 Version 7.15.4.0 
2021/01 Version 7.15.2.0 
2020 2020/12 Version 7.15.1.0 
2020/10 Version 7.14.3.0 
2020/09 Version 7.14.2.0 
2020/07 Version 7.14.1.0 

Wireless SDKs

The following components are available as part of Simplicity Studio.

Explore the portfolio of Wireless IoT protocol SDKs

32-bit Microcontroller SDK

This software package provides all of the drivers and services needed for a successful 32-bit MCU project.

Bluetooth Low Energy SDK

Develop Bluetooth Low Energy wireless connectivity solutions for IoT devices and applications.

Bluetooth Mesh SDK

Develop scalable Bluetooth mesh wireless connectivity solutions for IoT devices and applications.

Flex SDK - Connect Stack

Connect is the IEEE 802.15.4 wireless networking stack. It allows you to develop proprietary connectivity applications for low-power devices quickly.

Flex SDK - RAIL

RAIL, the Radio Abstraction Interface Layer, gives you all the latest RF technologies without sacrificing the investment you’ve made in your wireless protocol.

Thread SDK - OpenThread

Here are the Thread SDK and development tools for creating IP-based 802.15.4 wireless mesh solutions.

Wi-SUN SDK

Industry-leading software stack and development tools for Wi-SUN IoT devices and applications.

Zigbee SDK - EmberZNet

Get the complete Zigbee protocol stack and all elements required for developing reliable mesh networking applications.

Z-Wave SDK

Develop Z-Wave Plus compliant IoT products quickly and cost-effectively with a complete SDK.

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