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 (4.0.2.0)

Latest Release - Q1/2022  (March 2022)

Gecko Platform Version 4.0.2.0

  • CMSIS Device
    • Added support for ZGM230S modules
  • Drivers
    • Added support for RBG LEDs in the LEDdriver
  • Services
    • Added password and session protection in the CLI
  • Middleware
    • Fixed vulnerabilities in Micrium OS Net
    • Deprecated Micrium OS USB Device and USB Host
    • Deprecated Gecko USB
  • Security
    • Mbed TLS is updated to version 3.0.0
  • Operating System
    • Changed default configurations of the Micrium OS Kernel to reduce code size
  • Gecko Bootloader
    • Projects now supported in Project Configurator
    • Provided as a full-source delivery
  • Machine Learning
    • Updated TensorFlow Lite Micro version and updated quality to production level
    • Added accelerated kernels and automatic initialization of TensorFlow Lite Micro
  • Examples
    • Added emode demo
    • Added new machine learning examples
Release Date Release Notes
2022 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 6.2.2.0

  • Gecko USB has been deprecated
Release Date Release Notes
2022 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 3.3.2.0

  • Bluetooth v5.3 qualified
  • New Co-Processor Communication (CPC) transport for RCP/HCI
  • RTOS support in RCP mode
  • Improved tools for Angle-of-Arrival evaluation and development
  • Interoperability testing example added to the SDK
  • EFR32M|BG24 support

 

Release Date Release Notes
2022 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 3.3.2.0

  • Support for additional hardware platforms and operating systems
Release Date Release Notes
2022 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 2.2.2.0

  • EFR32M|BG24 support
  • New example embedded Provisioner application
  • NCP Commander support for Mesh
  • Multiple improvements to the Mesh BGAPI
  • Support for Amazon Bluetooth Mesh Simple Setup (BSS)
Release Date Release Notes
2022 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 2.0.2.0

  • EFR32MG24 support
  • Multiprotocol and multi-PAN radio coprocessor (RCP) model
  • Thread Duckhorn feature support
Release Date Release Notes
2022 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 3.3.2.0

  • Added support for EFR32xG24 parts
  • Added support for Z-Wave on EFR32xG23 parts
  • Added support for new ZGM230 modules
  • Updated the default PA curves for EFR32xG23 parts to be more accurate on Silicon Labs radio boards.
Release Date Release Notes
2022 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 1.2.3.0

  • FAN 1.0 Certified Wi-SUN Border Router reference design
  • Wi-SUN Network Performance Application
Release Date Release Notes
2022 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 7.0.2.0

  • EFR32MG24 support
  • Integrated with Gecko Platform component-based architecture
  • 802.15.4 Radio Co-Processor (RCP)
  • RCP Host for Raspberry Pi (Docker image)

 

Release Date Release Notes
2022 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 7.17.2.0

  • Z-Wave 800 - Lower power compared to 700
    • 55% reduction in Rx current
    • 35% reduction in Tx current
  • Z-Wave 800 – Longer range compared to 700
    • Integrated +20 dBm PA
    • 9 dBm sensitivity improvement for Z-Wave Mesh
    • 3 dBm sensitivity improvement for Z-Wave Long Range
  • Z-Wave 800 – Best-in-class security
    • S2 and Secure Vault
  • Underlying architecture changed to component-based design
  • New features improving application development
Release Date Release Notes
2022 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

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