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LibrariesinsideFreeRTOS core

Updated Jun 2025

FreeRTOS Core Libraries

Introduction

FreeRTOS Core libraries implement open standards based connectivity, security, and related functionality. These libraries are suitable for building smart microcontroller-based devices that connect to the cloud. Unlike the FreeRTOS-Plus libraries, FreeRTOS Core libraries have no dependencies other than on the standard C libraries, so FreeRTOS Core libraries are not dependent on the FreeRTOS RTOS kernel.

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Libraries

coreMQTT
A lightweight MQTT client implementation for IoT use cases. The coreMQTT Agent library (see below) creates a thread safe agent...
FreeRTOS core
coreMQTT Agent
A thread safe agent (or daemon) for the coreMQTT library. The coreMQTT agent includes the coreMQTT library.
FreeRTOS core
coreHTTP
A lightweight partialHTTP client implementation for IoT use cases.
FreeRTOS core
coreSNTP
The coreSNTP library provides a client for the Simple Network Time Protocol (SNTP) to allow devices to synchronize their system clocks with...
FreeRTOS core
Transport Interface
Describes the network transport independent interface used by FreeRTOS Core application protocols, such as coreMQTT and coreHTTP.
FreeRTOS core
coreJSON
A lightweight partial JSON parser that implements the ECMA-404 JSON standard.
FreeRTOS core
corePKCS #11
PKCS #11 an open standard cryptographic API layer (OASIS standard) that abstracts key storage, get/set properties for cryptographic objects... 
FreeRTOS core
FreeRTOS Cellular Interface Library
Provides an LTE CAT M-1 cellular interface for FreeRTOS. The download includes examples...
FreeRTOS core