Real-time operating systems

Mastering real-time performance at the heart of your embedded systems

Systèmes d’exploitation temps réel

In an embedded system, time is not just a technical metric: it is often what separates normal operation from an incident. A motor command that arrives too late, a sensor that isn't read at the right moment, a blocked task... and the entire application goes off the rails.

Real-Time Operating Systems (RTOS) are designed for this: they schedule tasks, manage processor priorities, and ensure that real-time applications meet their deadlines, even in highly multitasking environments.

At IT Link, we design and integrate real-time operating systems at the heart of your embedded systems, from the microcontroller to full integration.

Your challenges: what real-time changes for you

Mastering system behavior, not just the code

A program that works on a test bench does not automatically guarantee stability in production. In real-time systems, the challenge is not just that the software works, but that it:

  • executes every task within a known maximum timeframe,
  • remains deterministic despite interrupts, events, and input/output calls,
  • uses resources (CPU, memory, peripherals) without interfering with itself.

In practical terms, this allows you to control a motor, operate a device, or process an electronic signal with the certainty that the system will react on time.

Industrializing real-time software development

Without an RTOS, every team reinvents its own mechanisms for timers, scheduling, and inter-task communication. A real-time operating system provides:

  • standardized primitives (tasks, message queues, mutexes, etc.),
  • a clear architecture between hardware layers, drivers, and applications,
  • better management of versions, code, and different types of features.

Result: a foundation that is more useful in the long term, and easier to modify, extend, and certify.

Meeting industrial and regulatory constraints

In critical systems (transport, energy, medical, defense, etc.), real-time is also a matter of compliance:

  • compliance with standards and certification requirements,
  • traceability of key data and information,
  • ability to evaluate system behavior under degraded conditions.

Our teams help you design RTOS architectures that pass technical audits and regulatory assessments.

Let's discuss your constraints

Contact us

Our technical expertise: from architecture to integration

Designing the RTOS architecture

We start with your business needs and use cases:

  • breaking down the system into real-time tasks and services,
  • defining scheduling and priority rules (what needs to act first and in which cycle),
  • choosing the RTOS or embedded OS: FreeRTOS, real-time Linux, open-source or proprietary RTOS, depending on your hardware (ARM, Cortex, other microcontrollers, industrial evaluation boards),
  • defining access mechanisms for peripherals, buses, and shared resources.

You get a clear architectural diagram that your teams can understand and that is truly aligned with your constraints.

Serveurs

Develop and integrate on your platforms

Our developers work right where the action is:

  • developing and implementing tasks, drivers, and low-level layers,
  • adapting existing programs to integrate an RTOS or upgrade versions (e.g., to FreeRTOS or a more recent real-time Linux),
  • designing and integrating specific software components (sensor management, actuator control, communication protocols),
  • setting up debugging, tracing, and measurement tools (latency, response time, CPU load).

We work across the entire chain: from isolated embedded systems to applications connected to larger information systems.

Personne pointant d'une main le code affiché sur l'écran d'un ordinateur de bureau tout en tapant de l'autre main sur le clavier.

Optimize and ensure real-time reliability

Once the solution is integrated, we help you unlock its full potential:

  • precise measurement of cycle times, interrupt latency, and critical execution times,
  • optimizing scheduling, synchronization primitives, and the most sensitive processes,
  • reviewing resource management (memory, bus, I/O) to prevent deadlocks and contention,
  • implementing monitoring mechanisms (watchdogs, task supervision, event reporting) to properly handle abnormal situations.
Lignes courbes bleu foncé avec des segments lumineux bleus sur fond noir, ressemblant à des câbles numériques ou à fibres optiques abstraits.

Our support

Our experts adapt to your context: they can intervene on a specific component or take charge of the entire development cycle.

This initial phase aims to secure the project trajectory through a rigorous analysis of existing assets:

  • In-depth study of source code, documentation, and electronic schematics.
  • Analysis of processed signals (measurements, sensor streams, control information).
  • Mapping of hard real-time constraints and latency requirements.

We validate technological choices by creating a Proof of Concept (PoC) on a pilot scope:

  • Selection of the RTOS / Hardware pair (SoC, target microcontroller).
  • Definition of initial scheduling and development of critical drivers.
  • Testing on evaluation boards to validate technical feasibility and timing behavior.

Our teams implement tasks and application layers in strict accordance with coding standards:

  • Modular development and unit testing.
  • Continuous integration campaigns on target hardware.
  • Functional validation and performance testing under maximum load.

We support the product lifecycle through to mass production:

  • Implementation of the continuous integration and continuous deployment (CI/CD) pipeline.
  • Configuration management and technical documentation.
  • Long-term support: operational maintenance, security patches, and the addition of new features.

Speak with an RTOS expert

Request a callback

Our sectors of expertise

We develop and integrate embedded software tailored to each sector, taking into account the specific environments, standards, and constraints of your business. The examples below illustrate typical scopes and do not cover the full extent of our expertise.

Automotive

Engine control units, command and control, real-time test benches, and supervision of embedded real-time applications.

Aerospace

Equipment monitoring, critical data processing, and event and interrupt management in highly constrained environments.

Hélicoptère militaire en vol stationnaire, porte latérale ouverte, avec un soldat descendant en rappel le long d'une corde, sous un ciel nuageux.

Defense

High-resilience embedded systems, device and sensor control and monitoring, and signal processing in degraded conditions.

Energy

Infrastructure management, real-time regulation, field resource and data tracking, and integration with control systems.

Railway

Rolling stock and infrastructure supervision, and management of real-time processes related to safety and operations.

Industry 4.0

Production line synchronization, embedded machine system control, and communication with industrial information systems.

High-tech & Electronics

Smart equipment, development of new RTOS-based features, and optimization of electronic and software architecture.

Professionnel de santé vêtu d'une blouse blanche et d'un stéthoscope rouge lisant un document à l'intérieur.

Medical

Embedded devices, measurement data collection, and real-time tracking systems, all within a secure framework that meets regulatory requirements.

Do you have a specific project in mind?

Working in a different sector or have specific constraints? We can work with your teams to design a custom real-time architecture. Whatever your desired outcome, our experts are here to help you make the right technical and methodological choices.

Contact us
Do you have a new and innovative project? Let's talk about it!

Fields marked with an asterisk are required.

Expected format: name@company.com
Expected format: 10 digits with or without spaces, or an international number with country code.
Thank you for your request, you will receive an email from us.
Contact us
Do you have a new innovative project? Let's talk about it!

Fields marked with an asterisk (*) are required.

Thank you for your request, you will receive an email from us.
Oops! Something went wrong while submitting the form.
Go up to the top of the page