Firmware DevelopmentFreeRTOS & Zephyr RTOS. Dual-Bank OTA.
Bespoke firmware development services. Real-time operating systems (FreeRTOS, Zephyr RTOS, ESP-IDF), dual-bank fail-safe OTA bootloaders, hardware security, and embedded C/C++/Rust code.
FreeRTOS / Zephyr
Deterministic Multi-Tasking
Dual-Bank OTA
Fail-Safe Rollback Bootloader
Hardware Crypto
ATECC608A & TrustZone
MISRA-C QA
Safety-Critical Code Quality
Why Firmware Development
FreeRTOS & Zephyr RTOS multi-tasking. Dual-bank OTA.
Enterprise firmware engineering combines deterministic real-time operating systems, fail-safe dual-bank OTA bootloaders, and hardware security element integration.
FreeRTOS & Zephyr RTOS Multi-Tasking
Architecting deterministic multi-threaded RTOS firmware with strict task priorities, mutexes, semaphores, and message queues.
Dual-Bank Fail-Safe OTA Bootloaders
Building custom MCU bootloaders with dual-bank flash memory partitioning and automatic fallback to working firmware if booting fails.
Hardware Cryptographic Key Storage
Enforcing ARM TrustZone and ATECC608A secure element integration to store TLS client certificates and protect against physical side-channel attacks.
Hardware Abstraction Layer (HAL) Architecture
Decoupling low-level MCU driver code from application logic to ensure seamless portability across STM32, NRF52, and ESP32 chips.
Firmware Capabilities
RTOS multi-tasking, HAL drivers & hardware crypto security.
We deliver full-suite firmware development services covering BLE/Wi-Fi/LoRaWAN stacks, microamp sleep states, DSP Kalman filtering, and J-Link SWD debugging.
Real-Time Operating System (RTOS) Multi-Tasking Build
Developing FreeRTOS, Zephyr RTOS, and ESP-IDF applications with zero-latency task context switching.
Dual-Bank Fail-Safe OTA Bootloader Architecture
Building cryptographically signed OTA bootloaders with rollback protection and flash memory CRC verification.
Low-Level MCU Hardware Peripheral Driver (HAL) Development
Writing optimized C drivers for SPI, I2C, UART, CAN, ADC, PWM, and DMA controllers.
Hardware Security Element & TrustZone Integration
Provisioning X.509 client certificates into ATECC608A crypto elements and configuring ARM TrustZone SAU.
Wireless Connectivity Stack (BLE / Wi-Fi / LoRaWAN)
Integrating Nordic SoftDevice BLE stacks, ESP-IDF Wi-Fi dual-mode, and Semtech LoRaWAN MAC layers.
Microamp (µA) Deep Sleep & Power State Machines
Engineering event-driven power management state machines executing 1µA sleep states between sensor reads.
On-Chip Sensor Fusion & Math Processing Core
Implementing Kalman filters and FFT signal processing directly on MCU DSP floating-point units (FPU).
In-Circuit JTAG / SWD Debugging & Telemetry
Debugging firmware with SEGGER J-Link SWD interfaces, Real-Time Transfer (RTT) logs, and GDB.
Industry Solutions
Firmware development solutions for every commercial sector.
From industrial motor sensors to medical CGM wearables, smart thermostats, automotive CAN loggers, and smart meters, we write deterministic C/C++ firmware.
Industrial Motor Sensor FreeRTOS Firmware
Writing 1,000Hz sampling vibration and temperature firmware on STM32 MCU for factory motors.
Medical Wearable Continuous Glucose Monitor (CGM) Firmware
Architecting low-power BLE firmware reading glucose sensor electrodes with 3-year battery life.
Smart Home Touch Screen Thermostat ESP-IDF Firmware
Developing ESP32 dual-core Wi-Fi/BLE firmware powering LVGL touch UI and cloud MQTT dispatches.
Automotive CAN Bus OBD-II Vehicle Logger Firmware
Building dual-CAN bus logger firmware parsing vehicle ISO 15765-4 messages and writing to SD storage.
Smart City Streetlight Controller Zephyr RTOS Firmware
Writing Zephyr RTOS firmware controlling 0-10V dimming drivers over LoRaWAN wireless mesh.
Cold Chain Cargo Temperature Logger Firmware
Developing ultra-low power firmware logging temperature data to SPI flash during 30-day ocean transits.
Smart Agriculture Field Irrigation Sensor Firmware
Writing battery-powered LoRaWAN firmware reading soil moisture sensors and actuating latching valves.
Smart Electric Meter High-Precision Metrology Firmware
Building metrology firmware measuring 3-phase voltage, current, and active power harmonics on Cortex-M4.
Commercial Smart Lock Fingerprint & BLE Firmware
Developing secure door lock firmware processing optical fingerprint templates and BLE digital keys.
Robotics Motion Control & Servo Driver Firmware
Writing high-frequency PWM motor control loops with quadrature encoder feedback on STM32F4.
Water Pipe Flow Meter Ultrasonic Firmware
Building ultrasonic flow calculation firmware detecting micro-leaks in municipal water mains.
Oil & Gas Pipeline ATEX-Certified Sensor Firmware
Writing low-power intrinsically safe sensor firmware for hazardous explosive gas monitoring.
Firmware Feature Modules
Production-ready firmware feature components.
Complete list of FreeRTOS cores, dual-bank OTA managers, and HAL peripheral driver abstraction modules included.
FreeRTOS / Zephyr RTOS Core Application Engine
Multi-threaded deterministic RTOS architecture with priority scheduling and mutex synchronization.
Dual-Bank Fail-Safe OTA Bootloader Manager
Cryptographically verified bootloader flashing Bank B while Bank A remains operational fallback.
Hardware Peripheral HAL Driver Abstraction Layer
Portable low-level drivers for SPI, I2C, UART, CAN, and ADC peripherals.
ATECC608A / TrustZone Cryptographic Shield
Hardware security layer managing mTLS handshake keys and ECDSA message signatures.
Nordic / ESP-IDF Dual Wireless Connectivity Stack
Optimized BLE 5.0 GATT server and Wi-Fi WPA3 stack for instant cloud connectivity.
Microamp (µA) Event-Driven Power Manager
Automated sleep controller putting MCU core to sleep between timer interrupts.
On-Chip DSP & Kalman Signal Filtering Core
Hardware FPU execution of signal conditioning filters for clean sensor data streams.
J-Link RTT & GDB Live Debugging Console
Real-Time Transfer logging interface outputting diagnostic printfs without blocking execution.
Audit Trail & Firmware Version Binary Vault
Permanent timestamp logs recording every compiled firmware binary, SHA-256 hash, and release notes.
PostgreSQL Firmware Telemetry Vault
ACID database storage logging firmware crash dump logs, stack overflow reports, and OTA flash counts.
Single Sign-On (SSO)
Integrating SAML 2.0 and Azure AD for secure corporate firmware repository access.
Automated Monthly Firmware Stability Reports
Cron-scheduled dispatches detailing firmware stack usage, RAM utilization, and OTA success rates.
Technology & Tools
Modern firmware tech stack. High throughput.
We use FreeRTOS, Zephyr RTOS, ESP-IDF, Embedded C/C++, Embedded Rust, Nordic SoftDevice, and J-Link Debugger.
RTOS & Platforms
- FreeRTOS Kernel
- Zephyr RTOS
- ESP-IDF Framework
- Nordic nRF Connect SDK
Languages & Standards
- Embedded C (C11/C99)
- Embedded C++17/20
- Embedded Rust (no_std)
- MISRA-C Compliance
Development IDEs
- VS Code / PlatformIO
- STM32CubeIDE
- Keil MDK-ARM
- IAR Embedded Workbench
Wireless Stacks
- Nordic SoftDevice BLE
- ESP-IDF Wi-Fi / BLE
- Semtech LoRaWAN MAC
- OpenThread Mesh
Debug & Flashing
- SEGGER J-Link SWD
- ST-Link V3 Probe
- GDB Debugger
- J-Link RTT Logger
Security & Crypto
- Microchip ATECC608A
- ARM TrustZone SAU
- mbed TLS / WolfSSL
- TinyCrypt Library
Security & Quality
Encrypted binary vault & MISRA-C static code QA.
NDAA NDA compliance, hardware crypto key provisioning, and fail-safe OTA flash rollback testing.
Firmware Security Standards
Encrypted Firmware Source & Binary Storage Vault
Protecting client C/C++ firmware repositories, signing keys, and compiled ELF binaries with AES-256.
NDAA & SOC 2 Compliant Firmware Operations
Enforcing strict non-disclosure security standards for client embedded firmware architectures.
Hardware Security Element Key Injection
Provisioning unique private keys into ATECC608A crypto chips during factory PCB flashing.
Immutable Firmware SHA-256 Revision Logs
Permanent timestamp logs recording every compiled binary hash signature, Git commit, and author.
Isolated JTAG Hardware Debugging Sandboxes
Testing firmware binaries on physical target boards connected to isolated J-Link hardware test benches.
QA & Ergonomics Verification
MISRA-C Static Code Analysis Verification QA
Running Cppcheck and Coverity static analysis to verify 100% compliance with MISRA-C safety guidelines.
Fail-Safe OTA Flash Interruption Test QA
Simulating sudden power loss during wireless OTA flashing to verify 100% clean rollback to Bank A.
RTOS Stack Overflow & Memory Leak Test QA
Monitoring RTOS task stack high-water marks to guarantee zero stack overflow crashes under load.
Microamp (µA) Sleep Mode Power Profile QA
Measuring sleep current with Nordic PPK2 to guarantee sub-2µA sleep current draw.
E2E Hardware Peripheral Stress & DMA Test QA
Running 72-hour continuous SPI/I2C/UART loopback stress tests with zero packet corruption.
12-Step Lifecycle
Proven firmware development methodology.
From RTOS selection to HAL driver build, task architecture, wireless stack integration, OTA bootloader, power optimization, MISRA-C analysis, and binary signing.
Firmware Requirements & RTOS Selection
Defining hardware specs, real-time latency targets, memory constraints, and selecting FreeRTOS or Zephyr.
Hardware Abstraction Layer (HAL) Build
Writing low-level C drivers for SPI, I2C, UART, CAN, ADC, and power management peripherals.
RTOS Task Architecture & Queue Design
Designing multi-threaded task structures, inter-task message queues, semaphores, and mutexes.
Wireless Stack & Cloud Protocol Integration
Integrating BLE GATT server, Wi-Fi WPA3, or LoRaWAN stacks with MQTT telemetry serializing.
Dual-Bank Fail-Safe OTA Bootloader Build
Building secure bootloader with ECDSA signature validation and dual-bank flash memory fallback.
Microamp Power Optimization & Sleep Tuning
Configuring RTC timer interrupts and disabling unused MCU peripheral clocks during sleep.
MISRA-C Static Analysis & J-Link Debugging
Running static code analyzers, memory profiling with J-Link RTT, and resolving edge-case bugs.
Binary Signing, Factory Flashing & Handoff
Generating cryptographically signed firmware binaries, factory flashing scripts, and documentation.
Industry Domain Focus
Firmware development solutions built for your sector.
We write deterministic embedded firmware tailored to your specific commercial industry.
Enterprise B2B & SaaS
Connecting enterprise equipment, server room environmental sensors, and office energy management systems.
Healthcare & Life Sciences
Architecting low-power BLE firmware reading glucose sensor electrodes with 3-year battery life.
FinTech & Financial Services
Developing secure door lock firmware processing optical fingerprint templates and BLE digital keys.
Real Estate & PropTech
Developing ESP32 dual-core Wi-Fi/BLE firmware powering LVGL touch UI and cloud MQTT dispatches.
Logistics & Supply Chain
Developing ultra-low power firmware logging temperature data to SPI flash during 30-day ocean transits.
E-Commerce & Marketplaces
Writing 1,000Hz sampling vibration and temperature firmware on STM32 MCU for factory motors.
Related Services
Explore complementary IoT & embedded services.
FAQ
Firmware FAQs.
Questions we get before kicking off FreeRTOS, Zephyr RTOS, and OTA bootloader firmware engineering.
- An RTOS allows a microcontroller to run multiple tasks concurrently (e.g., sampling a sensor, processing BLE packets, and updating a display) with deterministic real-time scheduling, preventing high-priority sensor tasks from being blocked by slow communication tasks.
Let's build something great
Tell us your firmware goals.We'll build your RTOS & OTA bootloader.
Schedule a free firmware consultation with our senior embedded C/C++ developers. Receive a FreeRTOS architecture design, OTA bootloader plan, and project estimate.