Professional Embedded Firmware Development Services C/C++

As a leading embedded systems development company, we architect and implement high-performance, low-level firmware development services in C/C++, serving as the brain for sophisticated MCU and MPU platforms

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Custom Firmware Development Services for Embedded, IoT, and Medical Devices

We are a globally recognized firmware design company delivering comprehensive embedded systems development and firmware development services in robust C/C++ and Assembler. We specialize in architecting the core operational logic for intelligent IoT, Industrial Automation, and Class II/III Medical devices, offering full-cycle embedded development from custom bootloaders and low-level drivers to sophisticated application layers. Our expert embedded software engineers provide reliable, high-performance, MISRA C-compliant code that drives performance, focusing on efficiency, real-time response, and enterprise-grade security protocols like SSL/TLS, WolfSSL/Mbed TLS, and AES. We proudly serve clients across the USA, United Kingdom, Germany, Canada, and Australia, ensuring our solutions meet the highest international quality standards (ISO 9001/13485).

Our deep technical expertise covers a vast spectrum of embedded software development, including bare-metal programming and complex Real-Time Operating Systems (RTOS) such as FreeRTOS (including Amazon FreeRTOS), TI-RTOS, and ZephyrOS. We excel in heavy-duty platforms running Embedded Linux and customized industrial distributions like Yocto and Buildroot, including experience with ROS (Robot Operating System). We master critical low-level tasks, including precision power management, custom communication protocols (Modbus, DLMS), and intricate RF antenna matching integration for complex wireless protocols: UWB, LoRa/LoRaWAN, Thread, ZigBee, 6LoWPAN, and NB-IoT/LTE M. By utilizing specialized tools (like ST Cube IDE, PSoC Creator, CCSTUDIO, and GCC) on cutting-edge platforms like NXP (i.MX RT Series, I.MX6/7/8), Nordic (nRF52/53/9160), STMicroelectronics (STM32H7/F7), and NVIDIA Jetson SOMs, we transform ambitious concepts into certified, market-ready solutions.

Unlike standalone firmware design companies, Droid-technologies provides a unified engineering approach, integrating our embedded software development instantly with in-house Hardware, Mechanical, and QA teams. This synergy significantly reduces time-to-market by up to 30% and minimizes risks associated with late-stage hardware/firmware integration. Our commitment to quality is proven by our adherence to strict ISO 9001:2015 and ISO 13485 (Medical Devices) standards throughout the development process. We not only deliver clean, maintainable code but also ensure seamless transition to manufacturing, helping clients achieve optimal BOM (Bill of Materials) cost and full CE/FCC compliance. Partner with our expert team to accelerate your product launch and ensure engineering excellence from concept to final production. Contact us today to discuss your embedded project requirements. QA

C/C++ Firmware Development: RTOS, Embedded Linux, and Low-Level MCU Programming

Embedded C/C++ & Assembly Programming

We specialize in MISRA C/C++ compliant coding for mission-critical systems, ensuring high performance, memory efficiency, and long-term maintainability of your embedded firmware

Firmware Architecture Design for Embedded Systems

Our firmware design services start with rigorous architecture planning, the critical first step for successful embedded systems development. We utilize standardized diagrams for full code transparency and scalability, including Block Diagrams (high-level structure), UML Diagrams (code relationships), Workflow Diagrams (logic/state management), and API Diagrams (documented module interaction). This structured methodology accelerates project timelines, minimizes late-stage risks, and guarantees a robust embedded system architecture

Low/High-Speed Interfaces & Firmware Integration

Expert integration of high-speed interfaces (I2S, SAI, MIPI-DSI, MIPI-CSI, USB 2/3.x, LTDC, DDR3, DDR4, LPDDR4, I2C, SPI, QSPI, UART, CAN, Ethernet, 1-Wire, Analog HD(AHD), CVBS) with complex firmware drivers. We guarantee signal integrity and low latency for advanced data processing.

RF & IoT Firmware Development

RF Firmware Development Services: We master complex wireless coexistence and optimization for power-efficient battery management in protocols like NB-IoT, LTE M, GPRS, GPS, LTE(CAT 1, CAT4, etc), UWB, WiFi, BLE, ZigBee, Z-Wave, LoRa, Thread, 6LoWPAN, Sub 1GHz, NFC (13,6 MHz), RFID 433 MHZ and 128 kHz, RAIN RFID 860-960 MHz, Wi-Fi HaLow Sub-GHz, essential for IoT devices

Protocols

Secure implementation of industrial and IoT communication protocols (MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols), ensuring seamless data flow and enterprise-level embedded systems integration

Firmware Security Services

We deliver enterprise-grade Embedded Security and data protection for all devices. Our firmware development services include robust implementation of industry-standard cryptography like AES encryption and secure communication protocols, specifically SSL/TLS (utilizing libraries such as WolfSSL and Mbed TLS). We protect critical data transfer and device-to-cloud connections, offering custom algorithms and secure boot mechanisms to mitigate threats, ensuring the integrity of your embedded systems development

Libs and frameworks

We rapidly enhance functionality and user experience by leveraging industry-leading middleware and libraries. Our expertise covers sophisticated Embedded GUI creation using TouchGFX, emWin, and LVGL for MCU platforms. We ensure robust IoT connectivity with network stacks like lwIP and communication frameworks such as Paho MQTT. For security and reliability, we integrate WolfSSL/Mbed TLS and utilize FatFS for file management. Furthermore, our embedded systems development includes advanced features like TensorFlow Lite for edge AI/ML capabilities and osxMotionFX for sensor fusion, all built upon reliable platforms like AWS/Amazon FreeRTOS.

Embedded OS Expertise

We empower complex embedded systems development using advanced operating environments. This includes leveraging the power of modern RTOS, such as FreeRTOS, ZephyrOS, and TI-RTOS, for guaranteed real-time responsiveness and low-latency firmware development services. Furthermore, we provide specialized customization of industrial platforms like Embedded Linux / Yocto distributions, and possess deep expertise in ROS (Robot Operating System) and its latest version, ROS 2, for cutting-edge robotics and automation applications

Our expertise covers different microcontrollers

Hardware Platform Mastery: We provide advanced, cross-platform firmware development services across the most comprehensive range of silicon vendors globally, ensuring robust hardware-software integration for high-performance embedded systems development. Our deep platform expertise covers every segment: NXP i.MX-RT1160, i.MX RT1064, LPC1100, LPC4000, Nordic NRF52832, NRF52840, NRF5340, NRF9160, NRF7002, TI CC3220, CC26xx, CC1100, CC3200, MSP430, Espressif esp32-s2, esp32-s3, esp32-c2, esp32-c3, esp32, esp32-h2, esp8266, ST STM32H7/F7/F4/L4/F0/L0/WB/WL/G0 and STM8, Atmel/Microchip SAM D20/D21/L21/R21/V70/V71/SAMA5/SAM4/SAMD4, Silicon Labs EFR32, ZGM130S, Cypress PSoC 3, PSoC 4, Kinetis Family MK81FN256VDC15, Holtek HT66xx, HT68xx

Our expertise covers different microprocessors

We specialize in advanced MPU programming and Embedded Linux development services for high-performance, complex systems. Our expertise covers the most demanding applications, including high-speed processing, multimedia, and edge AI capabilities. We provide full firmware development services across leading MPU architectures, including deep experience with NXP’s i.MX series (I.MX6, I.MX7, I.MX8) and STMicroelectronics’ STM32MP1 for robust industrial and HMI solutions, focusing on Embedded Linux and Yocto customization. Furthermore, we leverage Analog Devices’ ADSP-2156x SHARC for specialized, real-time digital signal processing, Qualcomm Snapdragon series (625, 425, 610, 845) for advanced mobile and edge AI/ML application development, та Allwinner platforms (V3S, V3LP, A64, H3, H6) for optimized multimedia and cost-effective embedded solutions. By mastering these diverse MPU families, our firmware design company guarantees the delivery of powerful, scalable, and highly complex products, solidifying our position in embedded systems development

System-on-Module (SOM)

System-on-Module (SOM) Mastery: We provide specialized custom firmware development services for high-density System-on-Modules (SOMs), accelerating complex embedded systems development for AI and industrial platforms. Our expertise is unparalleled across leading vendors, starting with high-performance Edge AI and compute modules like NVIDIA (Jetson Nano, Jetson Orin), focusing on optimized Embedded Linux and peripheral integration. We offer comprehensive support for Toradex (Colibri iMX6/IMX7/iMX8) and Compulab (CL-SOM-iMX8Plus) platforms, leveraging NXP i.MX SOCs for industrial reliability. Furthermore, we master programming high-performance Qualcomm Snapdragon modules from Inforce (Snapdragon 845) and 8devices (Mango SOM), alongside popular solutions like Raspberry Pi (CM3, CM4, CM5). Our specialized IoT firmware development services extend to unique platforms such as Sensiedge (SensiBle/SensiLora) for wireless applications and Armdesigner (CM3588, MINI1126) based on Rockchip/RV MPUs. By providing full-cycle embedded development across these diverse hardware platforms, our firmware design company ensures superior performance, reduced complexity, and a fast transition to market for your most demanding products

Tools that we use

ST Cube IDE

CCSTUDIO

Segger embedded studio

Eclipse IDE for Espressif

PSoC® Creator

Simplicity Studio

Atmel/Microchip Studio for AVR® and SAM Devices

MCUXpresso IDE

CrossCore® Embedded Studio

GCC (Bar metal)

Arduino

Holtek ht-ide3000

Project process

Alpha Beta Gamma

Embedded Firmware Requirements Design for Hardware-Integrated Systems

As the first step of our firmware development process, we create detailed Technical Specifications (TS) tailored to your product’s hardware architecture. This includes defining all embedded hardware components (MCUs, wireless/wired interfaces, sensors, actuators), supported communication protocols (UART, SPI, I2C, CAN, BLE, NB-IoT, etc.), power management modes (sleep, deep-sleep, active), and full functional logic. Our firmware and hardware integration specialists ensure that software behavior aligns with real-world electrical constraints and product lifecycle needs. The resulting Technical Specification serves as the foundational, auditable document, crucial for compliance and successful project delivery. This phase is essential for clients seeking custom embedded firmware that works reliably across complex electronics platforms

Firmware Architecture Design and Software Structure Mapping

As part of our firmware development services, we create a comprehensive architecture design tailored to the embedded system’s technical requirements. This phase includes a firmware workflow diagram that outlines core logic, event handling, and control flows — essential for robust real-time behavior. We also create UML diagrams and API/interface diagrams, which define firmware modules, function calls, system states, and interactions with hardware drivers. This early-stage planning ensures consistency across your embedded project and accelerates low-level development, testing, and future code maintenance

Agile Embedded C/C++ Development and Sprint-Based Firmware Delivery

At this stage of our firmware development services, we begin modular C/C++ embedded software implementation using an Agile/Scrum approach. The firmware architecture, defined through UML/API diagrams, is divided into structured 2-week sprints with clear, measurable goals. Each sprint delivers a functional firmware module — tested on real target hardware (MCU/MPU), verified against hardware drivers, and aligned with system-level behavior. This agile firmware development process enables rapid iteration, continuous customer feedback, and early validation of system integration, reducing risk and accelerating time-to-market for embedded, IoT, and industrial applications

Firmware Code Review and Embedded QA Validation for Regulated Systems

In this phase of our embedded firmware development services, we execute a structured and traceable firmware code review process, ensuring that each code module meets industry standards for safety, portability, and efficiency. All source code is reviewed by a senior embedded engineer following our internal quality checklist and, where applicable, strict MISRA C compliance — a requirement for many medical, industrial, and automotive firmware projects. After review approval, the code is validated by a QA engineer using a combination of manual testing on physical target hardware (MCU/MPU) and automated unit or integration test scripts. This step is essential for early bug detection, regression prevention, and continuous quality assurance. We leverage Git-based review flows with merge requests, and Jira for full traceability, enabling a robust QA pipeline that scales across large, modular embedded projects and supports ISO 9001/13485-certified firmware delivery

Firmware Release and Secure Code Delivery with Git Tagging & QA Validation

Once a planned firmware module is completed and successfully passes code review and regression testing, we initiate a structured code delivery process as part of our embedded firmware development services. Using a Git-based release mechanism, we tag each validated firmware build with version-controlled milestones (e.g., v1.2.0) for traceable delivery. These releases are packaged with technical documentation and demo applications that demonstrate the firmware functionality on development kits (e.g., STM32/Nordic/NXP) or the target hardware platform, if available. Our firmware deliveries are optimized for CI/CD pipelines and meet the requirements of ISO 9001, ISO 13485, and IEC 62304-aligned projects

Custom Hardware Bring-Up & Embedded Firmware Debugging

Once physical device samples are available(assembled samples), we initiate the firmware bring-up phase — a critical step in our firmware development services. Our embedded engineers develop custom test firmware to validate all hardware interfaces, including GPIOs, sensors, ADCs, UART, SPI, I2C, etc, buses, power domains, and control logic. The bring-up code outputs detailed results via UART console or debug tools, providing immediate insight into system-level behavior. If discrepancies are detected, our firmware and hardware engineers collaborate directly to perform real-time troubleshooting, signal probing (oscilloscope/logic analyzer), and root-cause analysis. This tight integration between firmware and electronics engineers minimizes debugging cycles and ensures that your embedded device is stable, fully functional, and ready for full-stack firmware deployment

Final Code Development, QA Review, and Compliance Testing on Custom Hardware

In the final stage of our firmware development services, we complete and consolidate the production-ready firmware for the target custom hardware platform. This includes finalizing all application logic, edge-case handling, security layers (e.g., encryption, watchdogs, fault tolerance), and hardware-specific optimization. Our team performs a final code review, runs full-stack regression testing, and verifies functionality directly on the latest version of the embedded device. We align all deliverables with the original firmware technical specification, validating performance against defined KPIs, electrical constraints, and system behavior expectations. This stage ensures that the firmware meets project goals and is fully prepared for certification, pilot production, or mass manufacturing

Post-Production Firmware Support and Embedded System Maintenance

After project delivery and initial production or field testing, we provide a structured firmware support and bug fixing service to ensure long-term device reliability. This final stage of our firmware development lifecycle includes technical support, performance tuning, hotfixes, and updates to resolve issues uncovered during real-world operation. Support periods are tailored to the project’s complexity and client needs — ranging from a few months (for standard embedded systems) to multi-year contracts for complex IoT, industrial, or medical devices. Our team remains available to address firmware-related issues, apply security patches, adapt to hardware revisions, and support firmware over-the-air (FOTA) updates, ensuring your embedded product stays robust and future-proof