FreeRTOS LTS Libraries

Introduction

FreeRTOS long term support (LTS) releases receive security and critical bug fixes (should any be necessary) for at least two years following their release. That ongoing maintenance enables you to incorporate bug fixes throughout a development and deployment cycle without the costly disruption of updating to a new major version of FreeRTOS libraries. Long term support is provided courtesy of AWS for the benefit of the entire FreeRTOS community.

AWS also offers the FreeRTOS Extended Maintenance Plan (EMP) that provides you with security patches and critical bug fixes on your chosen FreeRTOS LTS version for up to an additional 10 years. Visit the EMP page on the AWS site for details.

FreeRTOS 202210.00 LTS covers the following libraries: FreeRTOS kernel, FreeRTOS-Plus-TCP, coreMQTT, coreHTTP, corePKCS11, coreJSON, coreSNTP, FreeRTOS-Cellular-Interface, AWS IoT Device Shadow, AWS IoT OTA, AWS IoT Jobs, AWS IoT Device Defender, AWS IoT Fleet Provisioning, and AWS IoT SigV4. Subsequent releases starting from the 202210.01 version will provide LTS patches for security and critical bug fixes.

Note:The downloads below contain source code for just the FreeRTOS Long Term Support (LTS) libraries, with no build projects or examples. The primary FreeRTOS download contains example projects. Refer to the FAQ for details.

Download the previous version: LTS 202012 Libraries

Upgrading to version 202210.xx of FreeRTOS LTS from the previous version

FreeRTOS 202210 LTS libraries are backward compatible with 202012.xx LTS, except for the coreMQTT and FreeRTOS-Plus-TCP libraries. For FreeRTOS-Plus-TCP, refer to these instructions on how to update your projects to use the new version. For coreMQTT, refer to these instructions.

To qualify your board, refer to the qualification guide and validate using the FreeRTOS Integration Tests version 202210.00.

FreeRTOS LTS libraries are also available from partner toolchains. See the blog post.

LTS Status

The following table lists the libraries that are part of FreeRTOS 202210 LTS. All meet the LTS modularity and Code Quality Checklist requirements other than the kernel and TCP stack, both of which still comply with their original quality requirements.

For information on library versions for the previous LTS version, see the FreeRTOS 202012-LTS repository on GitHub.

FreeRTOS LTS Patches

For the latest information, subscribe to GitHub Notifications by watching the FreeRTOS LTS repository.

LTS Code Quality Checklist

The table below documents the LTS release code quality requirements.