How to get started with RIOT on an ESP32?

RIOT has built-in support for ESP32; follow the Getting Started Guide to set up the toolchain, select the ESP32 board in make commands, and compile example applications like hello-world or networking demos for testing.

RIOT OS vs FreeRTOS: which is better for IoT?

RIOT offers a more uniform API and extensive IoT protocol support out of the box, while FreeRTOS has broader industry adoption and commercial backing. Choose RIOT for vendor independence and specific protocol needs, FreeRTOS for established ecosystems and simpler real-time tasks.

Does RIOT support Arduino boards?

Yes, RIOT supports many AVR-based Arduino boards (e.g., Arduino Uno) and some ARM-based ones, but you may need to check the board support list and use RIOT's API instead of Arduino libraries for full functionality.

How to implement over-the-air updates in RIOT?

RIOT includes SUIT for secure OTA updates; use the SUIT module configuration, integrate with CoAP or HTTP, and follow the documentation to handle firmware uploads and version management on devices.

What is the memory footprint of RIOT on an 8-bit AVR?

RIOT is designed for small footprints, but exact size depends on enabled modules. For minimal configurations on 8-bit AVR, it can use under 10KB of flash and 1-2KB of RAM, though networking features increase this significantly.

Can I use MicroPython with RIOT for rapid prototyping?

Yes, RIOT integrates MicroPython runtime, allowing Python scripting on supported platforms. However, performance and memory usage may be higher than native C/C++, so it's best for prototyping or less resource-intensive tasks.

RIOT — Microcontroller OS for IoT

What is RIOT?

RIOT is an open-source operating system designed specifically for Internet of Things (IoT) devices and embedded systems. It provides a real-time, energy-efficient platform with a small memory footprint that runs on a wide range of microcontrollers from 8-bit to 32-bit architectures. RIOT solves the problem of fragmented IoT development by offering a uniform, partially POSIX-compliant API that works consistently across different hardware platforms.

Target Audience

Embedded systems engineers and IoT developers working on resource-constrained devices who need a real-time operating system with comprehensive networking support and hardware abstraction. It's particularly valuable for teams building connected sensors, industrial IoT devices, smart home products, and other battery-powered embedded systems.

Value Proposition

Developers choose RIOT over alternatives because it combines real-time capabilities with energy efficiency while supporting an extensive range of IoT protocols and hardware platforms. Its vendor-independent open-source development model and LGPLv2.1 license allow commercial use with closed-source components, making it business-friendly while maintaining a strong community-driven ecosystem.

RIOT - The friendly OS for IoT

Use Cases

Best For

Building battery-powered IoT sensors with long-term energy efficiency requirements
Developing industrial IoT devices that need real-time responsiveness and deterministic behavior
Creating connected products that require multiple wireless protocols (BLE, LoRaWAN, 6LoWPAN)
Prototyping embedded systems that need to run on diverse microcontroller architectures
Implementing secure IoT deployments with over-the-air update capabilities
Educational projects teaching embedded systems programming with modern IoT protocols

Not Ideal For

Projects requiring a full Linux distribution with desktop environments and package management
Teams needing tight integration with proprietary microcontroller vendor tools and SDKs
Applications where a bare-metal approach is sufficient and OS overhead is unacceptable
Developers seeking extensive third-party middleware with commercial support contracts

Pros & Cons

Pros

Extensive Hardware Support

Supports over 200 boards across AVR, MSP430, ESP8266, ESP32, RISC-V, and ARM architectures, enabling deployment on diverse microcontrollers without API changes.

Multi-Language Flexibility

Allows native coding in C, C++, or Rust, and integrates runtimes like MicroPython and JavaScript, providing versatility for different development preferences and project needs.

Comprehensive IoT Networking

Includes IPv6, 6LoWPAN, CoAP, MQTT, LoRaWAN, BLE, and more, as listed in the README, making it ideal for connected devices with complex protocol requirements.

Security-Centric Features

Offers OTA updates via SUIT, PSA Cryptographic API, and DTLS/EDHOC, ensuring secure deployments for IoT applications directly from the feature set.

Real-Time Efficiency

Uses a preemptive, tickless scheduler with priority-based task management, optimized for low-power and deterministic real-time operations per the system features.

Cons

Setup and Stability Challenges

The README warns that cloning Git provides the newest features but comes with an 'ever changing work environment,' which can lead to instability without careful version management for production use.

Limited Commercial Polish

As a vendor-independent project, it lacks the polished toolchains, extensive third-party libraries, and commercial support options found in alternatives like FreeRTOS or vendor-specific SDKs.

Documentation Gaps

While guides and API docs exist, some advanced features or niche hardware integrations may have sparse examples, requiring deeper community engagement or source diving for implementation.

What is RIOT?

Target Audience

Value Proposition

Use Cases

Best For

Building battery-powered IoT sensors with long-term energy efficiency requirements
Developing industrial IoT devices that need real-time responsiveness and deterministic behavior
Creating connected products that require multiple wireless protocols (BLE, LoRaWAN, 6LoWPAN)
Prototyping embedded systems that need to run on diverse microcontroller architectures
Implementing secure IoT deployments with over-the-air update capabilities
Educational projects teaching embedded systems programming with modern IoT protocols

Not Ideal For

Projects requiring a full Linux distribution with desktop environments and package management
Teams needing tight integration with proprietary microcontroller vendor tools and SDKs
Applications where a bare-metal approach is sufficient and OS overhead is unacceptable
Developers seeking extensive third-party middleware with commercial support contracts

Pros & Cons

Pros

Extensive Hardware Support

Supports over 200 boards across AVR, MSP430, ESP8266, ESP32, RISC-V, and ARM architectures, enabling deployment on diverse microcontrollers without API changes.

Multi-Language Flexibility

Allows native coding in C, C++, or Rust, and integrates runtimes like MicroPython and JavaScript, providing versatility for different development preferences and project needs.

Comprehensive IoT Networking

Includes IPv6, 6LoWPAN, CoAP, MQTT, LoRaWAN, BLE, and more, as listed in the README, making it ideal for connected devices with complex protocol requirements.

Security-Centric Features

Offers OTA updates via SUIT, PSA Cryptographic API, and DTLS/EDHOC, ensuring secure deployments for IoT applications directly from the feature set.

Real-Time Efficiency

Uses a preemptive, tickless scheduler with priority-based task management, optimized for low-power and deterministic real-time operations per the system features.

Cons

Setup and Stability Challenges

The README warns that cloning Git provides the newest features but comes with an 'ever changing work environment,' which can lead to instability without careful version management for production use.

Limited Commercial Polish

As a vendor-independent project, it lacks the polished toolchains, extensive third-party libraries, and commercial support options found in alternatives like FreeRTOS or vendor-specific SDKs.

Documentation Gaps

While guides and API docs exist, some advanced features or niche hardware integrations may have sparse examples, requiring deeper community engagement or source diving for implementation.

RIOT

What is RIOT?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

RIOT

What is RIOT?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?