Microcontroller firmware is the heartbeat of your embedded product. A single bug in interrupt handling, power management, or peripheral initialization can mean months of board respins, costly product recalls, or failed certifications. At Codewave Labs, our firmware engineers have shipped code on every major MCU architecture — and we know where the dragons are.
We write clean, well-documented, testable C and C++ firmware from day one. Whether you need bare-metal code squeezing every cycle out of a Cortex-M0+ or a complex multi-tasking application on a Cortex-M7 with FreeRTOS, we deliver firmware that runs reliably in production — not just on the bench.
Every engagement begins with a thorough review of your hardware schematic, datasheet errata, and existing codebase (if any). We flag hardware bugs, identify missing pull-ups, and surface clock tree issues before they cost you a PCB revision.
Clock tree init, peripheral drivers (I2C, SPI, UART, USB, ADC, DAC, DMA), interrupt handling, linker script authoring, startup code, and HAL design.
Custom bootloaders with secure boot, dual-bank firmware updates, UART/USB/CAN DFU, cryptographic signature verification, and anti-rollback protection.
Sleep mode strategy, wake-up source configuration, peripheral power gating, DCDC/LDO sequencing. We routinely hit sub-10µA average current targets.
MISRA C:2012 compliance, IEC 62443, DO-178C guidance. Static analysis with PC-lint, Polyspace, or Parasoft. Code reviews and safety documentation.
JTAG/SWD bring-up, SEGGER J-Link integration, ITM/SWO tracing, core dump analysis, hard fault handler debugging, and systematic regression testing.
Robust OTA update pipelines: delta updates, rollback safety, cryptographic verification, dual-bank flash, and field update monitoring.
Schematic audit, errata review, clock tree analysis, power supply sequencing — we find hardware bugs before you spin the board.
Peripheral driver architecture, memory map, ISR strategy, task/thread design, and HAL API specification documented before coding starts.
Sprint-based delivery with hardware-in-loop CI. Unit tests with Unity/CMock. Weekly demos on real hardware.
EMC pre-compliance testing support, power profiling, manufacturing test firmware, Doxygen documentation, and full source handoff.
Tell us about your project — hardware platform, current challenges, timeline, and goals. First consultation is always free. We typically respond within 1 business day.