Embedded Firmware

Reliable firmware from bare-metal C to MicroPython

We write production-grade firmware in Embedded C and MicroPython — from bare-metal peripheral drivers to full application stacks with wireless connectivity, sensor fusion, and OTA updates. Code is structured, testable, and documented for long-term maintenance.

C programmingMicroPython developmentReal-time systemsPeripheral integrationCommunication protocolsPower optimization

Bare-Metal & RTOS Firmware

Whether the project calls for a lean bare-metal loop or a multi-tasked FreeRTOS application, we structure firmware for clarity and reliability. ISR-driven peripherals, DMA transfers, and low-power sleep modes are implemented with deterministic timing — not blocking delays.

  • Bare-metal firmware with interrupt-driven architecture
  • FreeRTOS task design, queues, semaphores, and timers
  • DMA-based data transfers for ADC, SPI, UART, and I2S
  • Low-power sleep modes with configurable wake sources

Communication Protocols

Modern embedded products rarely stand alone. We implement robust communication stacks — from on-board buses (SPI, I2C, UART) to wireless protocols (BLE, WiFi, NB-IoT, LoRa) and application-layer messaging (MQTT, HTTP, RTMP). Error handling, retry logic, and watchdog recovery are baked in.

  • Bluetooth Low Energy (BLE) profiles and GATT services
  • WiFi station/AP modes with MQTT and HTTP clients
  • NB-IoT and 4G LTE via SIM7020 / SIM7060 modems
  • LoRa point-to-point and LoRaWAN integration
  • RTMP video streaming over cellular connections

Sensor Integration & Signal Processing

From IMUs and pressure sensors to cameras and mmWave radar, we handle the full chain: hardware interface, driver code, calibration routines, filtering (moving average, Kalman, complementary), and data fusion. The goal is actionable, noise-free data — not raw register dumps.

  • IMU drivers (MPU6050, ICM-42688, LSM6DSO) with calibration
  • Camera interfaces (OV2640, OV9655) with DMA frame capture
  • Analog sensor conditioning, ADC sampling, and digital filtering
  • Multi-sensor fusion for reliable event detection

OTA Updates & Production Firmware

Firmware that ships needs to be updatable, recoverable, and production-ready. We implement dual-partition OTA update mechanisms, factory-reset flows, and secure boot chains. Production test firmware and JTAG/SWD programming jigs are delivered alongside the application code.

  • OTA update via WiFi, BLE, or cellular with rollback safety
  • Dual-partition boot with integrity verification
  • Production test firmware for manufacturing QC
  • JTAG/SWD debug and programming jig support

Tools & Technologies

ESP-IDF
Pico SDK (C/C++)
STM32CubeIDE / HAL
TI vendor SDKs
NXP vendor SDKs
FreeRTOS
MicroPython
JTAG / SWD debuggers
Logic analyzers

Frequently Asked Questions

Do you write firmware in C or MicroPython?

Both. Performance-critical or production firmware is written in Embedded C using vendor SDKs (ESP-IDF, Pico SDK, STM32 HAL, and TI and NXP SDKs). For rapid prototyping or simpler products, MicroPython offers faster iteration.

Can you add wireless connectivity to my existing hardware?

Yes — if the hardware has an MCU with wireless capability (ESP32, nRF52) or an external modem (SIM7020, SIM7060), we can implement BLE, WiFi, NB-IoT, or 4G LTE firmware on top of your existing design.

Do you provide source code and documentation?

Always. You receive the complete source code, build instructions, API documentation, and a firmware architecture overview. The code is yours to maintain or extend.

Need embedded firmware for your project?

Let’s discuss your requirements and find the best approach for your hardware project.

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