Bare-Metal & RTOS Firmware Engineering

Embedded Systems & Firmware Solutions

Bare-metal firmware, FreeRTOS architectures, low-level hardware drivers, and board bring-up across ARM Cortex-M, ESP32, and RISC-V platforms. We deliver deterministic, safety-critical embedded software that bridges silicon peripherals with host applications.

ARM & RISC-V Native
Cortex-M0+/M4/M7 & RV32IM
Sub-Microsecond RTOS
Deterministic preemption & ISR handling
Secure Boot & OTA
Cryptographic rollback protection

End-to-End Embedded Architecture

From hardware schematic review to production-grade RTOS architectures, our embedded team handles every layer of the low-level stack.

Bare-Metal & FreeRTOS Architectures

Writing deterministic, interrupt-driven C/C++ firmware with zero memory leaks, mutex hierarchies, queues, and priority inversion mitigation.

  • FreeRTOS & Zephyr RTOS integration
  • MISRA-C compliance & static analysis
  • Microsecond ISR latency tuning

Peripheral Drivers & Bus Protocols

Custom driver development for communication interfaces including SPI, I2C, UART, CAN 2.0B / CAN-FD, USB CDC/HID, and Ethernet MAC.

  • DMA-backed asynchronous data pipes
  • CAN bus filtering & arbitration handling
  • Sensor fusion & ADC sampling pipelines

Board Bring-Up & Hardware Diagnostics

Initial power-rail validation, clock verification, JTAG/SWD debugging, flash programming, and oscilloscope signal integrity measurements.

  • JTAG / SWD Segger J-Link debugging
  • Logic analyzer bus trace analysis
  • Automated board bring-up test scripts

Low-Power & Energy Harvesting

Designing multi-year battery-operated devices with microampere sleep modes, wake-on-interrupt routines, and dynamic clock throttling.

  • Deep sleep & standby current profiling
  • Power domain gating synchronization
  • RTC & low-frequency crystal calibration

Wireless Connectivity & IoT Stacks

Robust implementation of Bluetooth Low Energy (BLE 5.2), Wi-Fi 6, LoRaWAN, and Cellular IoT (NB-IoT/LTE-M) with secure MQTT/CoAP telemetry.

  • Nordic nRF52/53 & Espressif ESP32 stacks
  • End-to-end TLS / DTLS encryption
  • Cloud device provisioning pipelines

Secure Boot & Dual-Bank OTA Updates

Hardware root-of-trust with elliptic curve signature verification, encrypted flash partitions, and bulletproof rollback fallback for remote devices.

  • Dual-bank flash bootloaders
  • ECDSA / RSA signature verification
  • Anti-rollback monotonic counter checks

Custom Hardware Bring-Up & Board Solutions

Need dedicated firmware engineers to accelerate board bring-up, develop peripheral drivers, or port RTOS architectures to your custom PCB? We provide dedicated engineering partnerships.

Request Firmware Proposal

The Firmware Delivery Pipeline

A structured engineering process from initial silicon datasheet review to zero-defect production flashing.

Stage 01
Hardware Audit
Schematic review, pin mapping, clock trees, and peripheral memory map validation.
Stage 02
BSP Setup
Board Support Package initialization, linker scripts, and CMSIS register definitions.
Stage 03
Drivers & HAL
Writing low-level drivers for SPI, I2C, CAN, UART, and flash memory controllers.
Stage 04
RTOS Architecture
Task prioritization, inter-task communication queues, and ISR handling.
Stage 05
Bring-Up & Debug
In-circuit emulation, logic analyzer signal verification, and stress profiling.
Stage 06
OTA & Sign-Off
Secure bootloader verification, regression test pass, and binary release sign-off.

Schedule an Embedded Systems Consultation

Discuss your MCU platform, RTOS architecture, driver requirements, or custom PCB bring-up with our embedded engineering team.