RTOS Programming Services

RTOS Firmware Engineering

Real-Time Firmware
for Multi-Task Products

We provide RTOS programming services for embedded systems that need deterministic scheduling, safe resource sharing, predictable multitasking, and scalable real-time firmware architecture.

Preemptive Scheduling <10 µs Response Multi-Task Safe IPC Primitives Certified Kernels
Start Your Project Why RTOS?
Priority Scheduler Tick: 1 ms  |  Preemptive
Task A P=5
Running
RUNNING
Task B P=3
Ready
READY
Task C P=2
Waiting Queue
BLOCKED
Idle P=0
IDLE
CPU Time Slice (Gantt)
0
2
4
6
8
10ms
Task A (P5)
Task B (P3)
Task C (P2)
ISR
<1 µs
Interrupt Latency
Zero
Missed Deadlines
256
Priority Levels
100%
Deterministic

Technical Capabilities

What We Work With

Deep expertise in RTOS scheduling, IPC, memory management, and middleware integration across 8+ real-time operating systems.

Reliable RTOS firmware demands mastery of schedulers, task interactions, and real-time constraints. The layered architecture below shows how every component fits together.

Application Tasks
Comms TaskPriority High
Control TaskPriority Med
Logger TaskPriority Low
Idle TaskBackground
Queue
Semaphore
Mutex
Event Group
RTOS Kernel
Scheduler
IPC
Memory
Timers
Hardware Abstraction (HAL / BSP)
GPIO
UART
I2C/SPI
DMA/IRQ
Hardware — MCU / SoC (ARM Cortex-M, RISC-V, ESP32…)

Platforms & Capabilities

  • ✔FreeRTOS & AWS FreeRTOS (Cortex-M, RISC-V)
  • ✔Zephyr RTOS (nRF, STM32, ESP32, RISC-V)
  • ✔Azure RTOS / ThreadX
  • ✔embOS (SEGGER), RTX5 (Keil / CMSIS-RTOS v2)
  • ✔QNX Neutrino, VxWorks 7
  • ✔SAFERTOS (IEC 61508 / ISO 26262 certified)
  • ✔Priority-based preemptive & cooperative scheduling
  • ✔256 priority levels; round-robin for equal-priority tasks
  • ✔Task states: Running, Ready, Blocked, Suspended, Deleted
  • ✔Idle task, tick hook, tick-less idle (low power)
  • ✔Run-time statistics & stack watermark monitoring
  • ✔Queues — item-based FIFO with blocking send/receive
  • ✔Binary & Counting Semaphores (ISR-safe signalling)
  • ✔Mutexes with priority inheritance (no inversion)
  • ✔Event Groups — multi-bit flags, synchronisation points
  • ✔Stream & Message Buffers; Direct Task Notifications
  • ✔heap_1–heap_5: static to thread-safe dynamic allocators
  • ✔Fully static allocation (zero heap, deterministic)
  • ✔Memory pools — fixed-size blocks, zero fragmentation
  • ✔Stack overflow detection hooks
  • ✔MPU region configuration per task (Cortex-M)
  • ✔LwIP — lightweight TCP/IP stack (IPv4/IPv6)
  • ✔TinyUSB — USB device/host stack
  • ✔FatFS / littleFS — FAT and power-safe file systems
  • ✔NimBLE / Zephyr BLE host stack
  • ✔CoreMQTT / AWS IoT SDK; MCUboot OTA agent

Why RTOS

Why Choose an RTOS for Your Firmware?

An RTOS brings structure, timing guarantees, and safety to complex multi-task embedded products — without the weight of a full OS.

01
Deterministic Timing

Priority preemptive scheduling guarantees your critical tasks always meet their deadlines — with measurable, bounded interrupt latency.

02
True Multitasking

Run sensor acquisition, communication, UI, and safety watchdog concurrently — each isolated and safely scheduled.

03
IPC & Shared Resources

Mutexes, queues, and event groups prevent race conditions and data corruption across concurrent tasks.

04
Rich Middleware Ecosystem

Plug in TCP/IP, USB, BLE, OTA, and file system stacks without building from scratch — accelerating time to market.

05
Scalable Architecture

Start on a Cortex-M0+ and scale to a multicore SoC without redesigning your firmware architecture.

06
Certification Support

SAFERTOS and certified FreeRTOS variants for IEC 61508, ISO 26262, and IEC 62443 compliant products.

How We Work

Our RTOS Development Process

A structured process from timing analysis to production delivery — ensuring every deadline is met and every task is safe.

01
Requirements & Timing Analysis

Real-time constraints, task periods, deadlines, and interrupt budgets documented.

02
RTOS Selection & Architecture

Platform chosen, task hierarchy designed, memory model and IPC strategy defined.

03
Task & Scheduler Config

Tasks created, priorities assigned, stack sizes calculated, tick rate configured.

04
Driver & Middleware Integration

Platform drivers, TCP/IP, USB, or BLE middleware integrated and validated.

05
Timing Verification & Load Testing

WCET measured, CPU load profiled, deadlines validated under worst-case conditions.

Production-Ready Delivery

Source code, binaries, RTOS configuration guide, and test evidence handed over.

Our Toolchain

Tools & IDEs We Use

Industry-standard development environments, RTOS-aware debuggers, and profiling tools for verifiable real-time systems.

■  IDEs & Compilers
Keil MDK (µVision)
IDE / RTOS-aware debugger
IAR Embedded Workbench
IDE / Compiler
STM32CubeIDE
IDE / FreeRTOS Integration
PlatformIO / West (Zephyr)
Build & Package Manager
■  Debug & Profiling
SEGGER SystemView
RTOS Task Profiler
SEGGER J-Link / OpenOCD
Debug Probe / GDB Server
Logic Analyzers & Oscilloscopes
Hardware Timing Verification
GDB / ARM GCC Toolchain
Debugger / Compiler

Industries

Industries We Serve

RTOS firmware powers safety-critical and performance-demanding products across every major embedded sector.

IoT Devices

Connected sensors, gateways

Industrial Automation

PLCs, motor drives, CNC

Automotive / EV

ECUs, BMS, ADAS, ISO 26262

Medical & Healthcare

Patient monitors, infusion pumps

Analytical Instruments

Spectrometers, lab equipment

Scientific Instruments

Sensors, measurement systems

Home Automation

Smart devices, lighting, HVAC

Consumer Electronics

Wearables, displays, audio

Water Treatment

Monitoring, dosing, control

Agritech

Soil, irrigation, automation

Environmental Controllers

Air, water, climate sensors

Deliverables

What You Receive From Us

Every engagement ends with a complete, documented handover package your team can own, extend, and certify with confidence.

Well-Commented Source CodeVersioned in Git with clean task/module separation and MISRA-C annotations where required.
Binary Firmware Images.hex / .bin / .elf files with RTOS kernel, drivers, and application ready to flash.
RTOS Configuration DocumentationTask list, priorities, stack sizes, heap configuration, tick rate, and IPC object map.
Timing Analysis ReportWCET measurements, CPU load profile, deadline verification evidence from SystemView traces.
Test ReportsUnit, integration, and stress test results with pass/fail evidence and timing traces.
OTA / DFU Update MechanismMCUboot-based secure firmware update for field-deployed products where applicable.
Post-Delivery SupportBug fixes, feature additions, and consultations after project completion.
Full IP Ownership TransferredNo licensing fees, no lock-in the firmware belongs entirely to you.

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