Embedded Firmware Development Services in India | ESP32, STM32

[ CORE TECHNICAL CAPABILITIES ]

What We Build & Architect

Reliable embedded software designed for memory constraints, low power consumption, real-time deterministic execution, and continuous field operation.

Bare-Metal C/C++ & FreeRTOS

Deterministic multi-threaded task management, queue synchronization, semaphore locks, and bare-metal peripheral drivers for time-critical sensing and actuation.

                        ESP-IDF • FreeRTOS • STM32 HAL • ARM Cortex-M
                    

Wireless & Cellular Protocols

Low-power Bluetooth (BLE GATT profiles, pairing & beacons), Wi-Fi 6 provisioning, and 4G LTE Cat-1 / Cat-M1 / NB-IoT modem control with automatic network reconnection.

                        BLE • Quectel OpenCPU / AT • MQTT-SN • CoAP
                    

Automotive CAN & Telematics

J1939 protocol stacks, standard OBD-II diagnostic message parsing, CAN frame filtering, engine fault code logging, and GPS/GNSS position streaming.

                        J1939 • OBD-II PID • ISO 15765 • GNSS Dead Reckoning
                    

Secure Edge OTA Pipelines

Dual-partition bootloader architectures with cryptographic firmware signature verification, automatic rollback on boot failure, and compressed chunked updates.

                        A/B Bootloader • SHA-256 / RSA • TLS 1.3 • Flash Partitioning
                    

Ultra-Low Power Optimization

Deep-sleep state machines, dynamic clock frequency scaling, wake-on-motion accelerometer interrupts, and power budget modeling for multi-year battery lifespans.

                        Deep Sleep • RTC Memory • Power Profiling • Sensor Duty Cycling
                    

Peripheral & Sensor Fusion

Custom device drivers for I2C, SPI, UART, RS-485, and ADC interfaces. Integration with IMUs, temperature sensors, optical RFID readers, and industrial power relays.

                        DMA Drivers • RS-485 • SPI Flash • Hardware Interrupts
                    

[ PROVEN FIRMWARE ARCHITECTURES ]

Real Products Built by Inurum

Our firmware runs in real vehicles, commercial buildings, and connected industrial hardware.

Automotive Telematics

SmartStarter Truck Controller

J1939 CAN bus firmware, remote engine ignition state machine, and secure BLE handshaking built for Class-8 commercial trucks.

View Case Study

Fleet IoT Hardware

Trackify 4G GPS Tracker

High-frequency GNSS positioning, Quectel 4G LTE telemetry streaming, power-cut alerts, and remote immobilizer relay driver.

Explore Trackify GPS

Enterprise Hardware

Attendance One Terminal

Sub-second encrypted RFID badge parsing, offline event buffering on SPI flash, Wi-Fi/Ethernet auto-failover, and audio feedback.

Explore Attendance One

Commercial Compliance

ELD NT11 Telematics

Engine run-time telemetry, odometer sync via vehicle data bus, and cryptographic BLE transmission to certified driver logs.

Read Technical Guide

Deep-Dive Engineering Articles

Learn how our engineers design automotive and cellular telematics architectures.

ESP32-S3 Telematics Architecture Quectel BG95 Cellular IoT Guide

[ SYSTEMATIC DEVELOPMENT ]

From Hardware Bring-Up to Production

PHASE 01

Architecture & Bring-Up

Hardware schematic review, GPIO allocation, clock tree verification, power rail testing, and low-level peripheral driver initialization.

PHASE 02

RTOS & Core Logic

FreeRTOS task scheduling, memory footprint optimization, sensor data acquisition queues, and state machine design.

PHASE 03

Protocols & Security

Integration of TLS 1.3 cryptographic handshakes, cellular/BLE communication stacks, CAN frame filtering, and cloud MQTT payloads.

PHASE 04

Testing & Factory Flashing

Stress testing, watchdog timer validation, failover recovery testing, and automated scripts for factory production programming.

[ FREQUENTLY ASKED QUESTIONS ]

Embedded Firmware FAQs

Which microcontrollers and RTOS platforms does Inurum support?

We specialize in Espressif ESP32 series (ESP32, ESP32-S3, ESP32-C3 with ESP-IDF and FreeRTOS), STMicroelectronics STM32 (ARM Cortex-M0/M4/M7 bare-metal and FreeRTOS), Nordic Semiconductor nRF52 series (BLE), and Quectel cellular OpenCPU platforms.

How do you implement safe Over-The-Air (OTA) firmware updates?

Our OTA pipelines use dual-bank A/B flash partitioning. When a new firmware binary is received, it is verified via cryptographic SHA-256 signatures before reboot. If the new image fails its health check on boot, the hardware automatically rolls back to the previous stable firmware partition.

Can Inurum build automotive telematics firmware with CAN bus and J1939?

Yes. We have engineered automotive firmware for commercial fleet controllers like SmartStarter and ELD NT11, handling J1939 parameter groups, OBD-II diagnostic PIDs, and custom hardware CAN frame filters.

Do we receive full ownership of the firmware source code and build pipelines?

Yes. You retain 100% intellectual property ownership of all C/C++ source code, build scripts, CMake/Makefile configurations, and hardware bring-up documentation upon project delivery.

Can Inurum build the companion mobile application and cloud backend as well?

Yes. Inurum develops the hardware firmware, Flutter companion apps (BLE/Wi-Fi provisioning), and high-concurrency cloud ingestion backends under one unified engineering team.

[ READY TO START? ]

Bring Robust Firmware to Your Hardware

Consult with our senior firmware engineers to review your schematics, peripheral requirements, or RTOS architecture.

Schedule Engineering Consultation Chat on WhatsApp