AWS FreeRTOS is an operating system designed for microcontrollers that enables easy and secure connectivity to AWS Cloud services. It provides a complete IoT solution for small, low-power devices such as sensors, wearables, and other IoT devices. AWS FreeRTOS is based on the FreeRTOS kernel, which is a popular real-time operating system for microcontrollers.

With AWS FreeRTOS, developers can easily connect their IoT devices to AWS Cloud services such as AWS IoT Core, AWS Greengrass, and AWS IoT Analytics. AWS FreeRTOS also includes over-the-air updates, which makes it easy to update and maintain IoT devices remotely.

AWS FreeRTOS is open source and available for free, making it accessible to developers and organizations of all sizes. It is also supported by a large and active community of developers who contribute to its ongoing development and improvement. Overall, AWS FreeRTOS provides a powerful and flexible platform for building secure and scalable IoT solutions.


AWS FreeRTOS is an open-source operating system for microcontrollers that makes it easy to securely connect small, low-power devices to AWS cloud services. It includes a kernel for scheduling tasks, drivers for networking and storage, and libraries for communication protocols like MQTT and HTTP. AWS FreeRTOS also includes the tools and libraries necessary to securely connect to AWS IoT Core, a managed cloud service that allows devices to interact with AWS services and other devices using the MQTT or HTTP protocols.

Why use AWS FreeRTOS?

AWS FreeRTOS makes it easy to develop and deploy connected devices with low power consumption and small memory footprints. It provides a secure and reliable platform for IoT devices that need to communicate with AWS cloud services, while also enabling local processing and data storage for faster response times and improved reliability.

AWS FreeRTOS also includes a rich set of features that simplify development and deployment, including over-the-air updates, device management, and support for common communication protocols like MQTT and HTTP. Additionally, AWS FreeRTOS is designed to work seamlessly with other AWS services, making it easy to integrate with existing cloud infrastructure and services.

Features of AWS FreeRTOS

AWS FreeRTOS provides a comprehensive set of features for developing and deploying IoT devices, including:

  • Kernel for task scheduling and management
  • Drivers for networking and storage
  • Libraries for communication protocols like MQTT and HTTP
  • Support for secure communication with AWS IoT Core
  • Over-the-air updates for firmware and software
  • Device management and monitoring tools
  • Integration with other AWS services like AWS Lambda and Amazon S3
  • Free and open-source, with no licensing fees or royalties.

AWS FreeRTOS Architecture

AWS FreeRTOS is an operating system for microcontrollers that makes it easy to securely connect small, low-power devices to AWS cloud services. The architecture of AWS FreeRTOS is built around the kernel, which provides a hardware abstraction layer and a real-time scheduler. The kernel is responsible for managing system resources, scheduling tasks, and providing access to peripheral devices.

AWS FreeRTOS includes a suite of software libraries that provide support for common IoT protocols, including MQTT, TCP/IP, and TLS. These libraries can be used to build applications that communicate with AWS IoT Core, AWS IoT Greengrass, and other AWS services.

Supported Hardware Platforms

AWS FreeRTOS is designed to work with a wide range of microcontroller platforms, including ARM Cortex-M, Renesas RX, and Texas Instruments MSP430. AWS FreeRTOS also supports a number of development boards, including the STMicroelectronics STM32, the NXP LPC54018, and the Infineon XMC4800.

Integration with Other AWS Services

AWS FreeRTOS can be integrated with a number of other AWS services to create a complete IoT solution. For example, AWS IoT Core can be used to securely connect devices to the cloud, while AWS IoT Greengrass can be used to extend cloud capabilities to the edge. AWS FreeRTOS can also be used with AWS Lambda to create serverless applications that respond to IoT events in real-time. Additionally, AWS FreeRTOS can be used with AWS Device Defender to monitor and secure IoT devices in the field.

Getting Started with AWS FreeRTOS

AWS FreeRTOS is an operating system for microcontrollers that makes it easy to program and connect devices to the cloud. Here are the steps to get started with AWS FreeRTOS:

Prerequisites for using AWS FreeRTOS

Before you start using AWS FreeRTOS, there are a few prerequisites that you need to fulfill:

  • You need to have an AWS account.
  • You should have basic knowledge of embedded systems and C programming language.
  • You need to have a development board that supports AWS FreeRTOS.

Installation and configuration

To start using AWS FreeRTOS, you need to install and configure the following software:

  • The AWS Command Line Interface (CLI): You can download and install the AWS CLI from the AWS website.
  • The AWS IoT Device SDK: You can download the SDK from the AWS website or install it using the package manager of your operating system.
  • The AWS FreeRTOS kernel: You can download the kernel from the AWS website or clone it from the GitHub repository.

After installing these software components, you need to configure them by providing your AWS account credentials and creating an AWS IoT thing.

Creating and building projects

To create and build projects with AWS FreeRTOS, you need to follow these steps:

  1. Choose a development board that supports AWS FreeRTOS.
  2. Set up the development environment by installing the required tools and drivers.
  3. Create a new project using the AWS FreeRTOS kernel and the AWS IoT Device SDK.
  4. Write the application code in C programming language.
  5. Build the project and flash the binary to the development board.

AWS FreeRTOS provides a set of example projects that you can use as a starting point for your own projects. These examples demonstrate how to perform various tasks such as connecting to the cloud, publishing and subscribing to MQTT topics, and using AWS IoT services.

Developing Applications with AWS FreeRTOS

AWS FreeRTOS is an operating system for microcontrollers that makes it easy to develop IoT applications. It provides a kernel that manages the hardware and software resources of a device, as well as libraries for networking, security, and communication. Here are some key features of developing applications with AWS FreeRTOS:

Programming languages supported

AWS FreeRTOS supports programming languages such as C and C++, which are commonly used for developing embedded systems. The operating system also comes with libraries that make it easy to interface with hardware peripherals like sensors and actuators.

Using MQTT with AWS FreeRTOS

AWS FreeRTOS supports the Message Queuing Telemetry Transport (MQTT) protocol, which is a lightweight messaging protocol designed for IoT devices. This protocol allows devices to send and receive messages over a network with low bandwidth and high latency. With AWS FreeRTOS, you can use MQTT to communicate with AWS IoT Core and other AWS services.

Securing your applications with AWS FreeRTOS

AWS FreeRTOS comes with built-in security features that help you protect your IoT applications. For example, you can use Transport Layer Security (TLS) to encrypt data in transit, and Secure Sockets Layer (SSL) to secure the connection between your device and AWS services. Additionally, you can use AWS Identity and Access Management (IAM) to manage user access and permissions for your IoT devices.


In conclusion, AWS FreeRTOS is a powerful and versatile operating system designed for IoT devices that provides a wide range of benefits. Some notable benefits include simplified device management, secure communication, and optimized power consumption. Additionally, the OS provides developers with a familiar programming environment and enables seamless integration with other AWS services.

AWS FreeRTOS is being used in various real-world use cases, including industrial automation, smart homes, and remote monitoring of medical equipment. The OS has demonstrated its ability to handle complex tasks while maintaining high levels of stability and reliability.

As for future developments, AWS continues to invest in the development and enhancement of AWS FreeRTOS. The company is working on expanding features and functionality, improving security, and developing new tools to make it easier for developers to build IoT applications. AWS FreeRTOS has the potential to become the go-to operating system for IoT devices, and we can expect to see many exciting developments in the years to come.