Embedded Firmware
Code that runs on metal.
From bare-metal drivers to full embedded Linux distributions — we write firmware that is deterministic, maintainable, and built for the environment it will actually live in.
Embedded Firmware
From bare-metal drivers to full embedded Linux distributions — we write firmware that is deterministic, maintainable, and built for the environment it will actually live in.
Embedded Firmware
The best firmware is invisible — it initialises fast, handles faults gracefully, and never gives the user or operator a reason to think about it. That's the bar we build to.
We work at every layer of the embedded stack: register-level bare metal, RTOS task architectures, and full embedded Linux distributions. The choice of approach is driven by your product's constraints — power budget, cost, connectivity, and time-to-market.
Every codebase we deliver is structured, documented, and yours to own after the engagement — not a black box you depend on us to maintain.
Tight, deterministic code written directly against the hardware — no OS overhead, full control over every peripheral and power state.
Learn More →FreeRTOS and Zephyr RTOS architectures for multi-tasking products that need reliable scheduling, inter-task communication, and power management.
Learn More →Yocto and Buildroot systems for connected products requiring rich networking stacks, OTA update frameworks, and application-layer flexibility.
Learn More →Field-proven OTA pipelines and secure boot chains that keep deployed devices updated, authenticated, and protected across their full lifetime.
Learn More →
Bare-Metal
When every microsecond and microamp counts, bare-metal is the right tool.
We write startup code, linker scripts, peripheral drivers, and interrupt handlers directly against the silicon — STM32, nRF, ESP32, RP2040, and more. No HAL abstraction leaking into your timing-critical paths.
Our bare-metal codebases follow a strict layered architecture: hardware abstraction at the bottom, application logic at the top, and a clean interface between them so the product can evolve without rewriting the driver layer.
Used in products where a RTOS would add unnecessary overhead — low-power sensor nodes, motor controllers, and high-speed signal processing.
RTOS
A well-designed RTOS architecture makes a complex embedded product tractable.
We build FreeRTOS and Zephyr RTOS systems with clearly separated tasks, explicit inter-task communication via queues and semaphores, and deterministic scheduling that keeps your timing guarantees intact.
Power management is a first-class citizen — tick-less idle modes, peripheral power gating, and wake-on-event architectures that extend battery life without sacrificing responsiveness.
We include a watchdog strategy, fault handlers that log and recover, and a set of unit-testable modules that can run on host as well as on target.
Embedded Linux
Embedded Linux gives you networking, security, and application frameworks on custom silicon.
We build Yocto and Buildroot distributions sized for your board — only the packages you need, with a minimal attack surface and a reproducible build system your team can own and update.
Our Linux engagements include BSP bring-up, device tree authoring, kernel driver development, and systemd service architecture for clean startup and graceful shutdown.
We've shipped embedded Linux on i.MX8, RK3566, and Raspberry Pi CM4-based hardware — in kiosk products, IoT gateways, and industrial HMI systems.
OTA & Security
A device without a reliable update path is a liability the moment it ships.
We design and implement OTA update pipelines tailored to your platform — dual-bank flash with atomic swap on RTOS targets, SWUpdate or Mender on embedded Linux, and delta-update strategies for bandwidth-constrained devices.
Secure boot chains ensure only signed firmware runs on your hardware — from bootloader through to application, with device attestation for cloud-connected fleets.
We also help you build the backend pipeline: staged rollouts, rollback triggers, and fleet health monitoring so you can deploy updates confidently at scale.
More From Squared
Custom PCBs designed for manufacture — schematics, layout, DFM review, and contract-manufacturer hand-off.
End-to-end connected devices: hardware, firmware, cloud backend, and mobile app under one roof.
Qt/QML and LVGL touchscreen interfaces for embedded Linux and microcontroller platforms.
Start a Firmware Project
Most firmware engagements start with a short technical call. Tell us your target platform, your timing constraints, and where you're stuck — and we'll tell you exactly how we'd approach it.