Modern vehicles rely on multiple Electronic Control Units (ECUs) to manage systems like engine control, braking, transmission, infotainment, and more. Effective diagnostics, firmware updates, and maintenance across these ECUs demand a unified, standardised protocol. That’s where the UDS protocol defined under ISO 14229 comes in. UDS enables reliable ECU diagnostics, firmware flashing, health monitoring, and control functions across different vehicle types and architectures.
At iWave, we provide a ready-to-deploy, fully compliant UDS protocol stack, designed to accelerate diagnostics integration while supporting diverse hardware and OS platforms.
What is UDS and Why It Matters
- Standardised, manufacturer-agnostic protocol: UDS (ISO 14229) is a globally accepted standard that enables diagnostics across ECUs irrespective of the vehicle make or ECU vendor.
- Flexible transport support: Though commonly used over CAN via ISO-TP (ISO 15765-2), UDS can also operate over other layers such as Ethernet (UDS-on-IP), making it adaptable to modern vehicle network architectures.
- Rich diagnostic & control services: UDS supports a wide range of services from reading real-time data (e.g. sensor values, ECU status) to clearing fault codes, controlling I/O, triggering test routines, and performing ECU firmware updates.
In short, UDS provides a comprehensive framework for both in-vehicle diagnostics and remote/automated maintenance workflows critical for today’s software-defined and connected vehicles.
iWave’s UDS Protocol Stack – Features & Capabilities
iWave offers a mature, C-based UDS stack that is compatible with FreeRTOS, Linux, and bare-metal platforms ensuring broad applicability across automotive, telematics, and embedded systems.
Key Highlights:
- Client and Server support: Enables both diagnostic testers (clients) and ECUs (servers) to be implemented, giving flexibility depending on the use-case.
- Support for CAN and CAN-FD / ISO-TP transport: Works with traditional CAN based networks, supporting ISO 15765-2 (CAN-TP) the most widely used in vehicles.
- Comprehensive diagnostics and control services: Data read/write, periodic telemetry, DTC (Diagnostic Trouble Code) reading and clearing, ECU memory access, IO control, remote routines, and secure firmware download/upload.
- Configurable and modular stack: Users can enable or disable features based on application needs whether simple diagnostics or full-featured ECU management with a lightweight footprint (as low as ~80 KB ROM for core stack)
- Easy integration via clean APIs: The stack offers a well-defined API interface to integrate with various hardware platforms and telematics gateways, reducing development time and ensuring maintainability.
Because of this versatility, iWave’s UDS stack becomes a powerful building block for automotive OEMs, telematics gateway providers, fleet-management systems, and diagnostic tool developers.
Typical Use Cases Enabled by UDS
With iWave’s implementation of UDS, developers and fleet operators can enable:
- Comprehensive vehicle diagnostics: Retrieve real-time sensor data (engine temp, speed, battery status), read/clear DTCs, monitor ECU status, and diagnose faults.
- Firmware updates & ECU reprogramming: Remotely flash ECUs enabling feature upgrades, bug fixes, or security patches without physically accessing the vehicle.
- Remote maintenance & health monitoring: Collect telemetry for preventive maintenance, identify anomalies early, and reduce downtime.
- Telematics & connected-vehicle services: Integrate with telematics gateways to push diagnostic data to clouds or fleet management platforms, enabling analytics, usage-based maintenance, usage-based insurance, and remote troubleshooting.
- Diagnostic tool development: OEMs or third-party tool providers can build compatible diagnostic readers and service equipment using iWave’s UDS stack, ensuring cross-vendor interoperability.
Why Choose iWave’s UDS Stack
- End-to-end solution: From low-level CAN transport to high-level diagnostic services everything is covered.
- Platform agnostic: Works on multiple ARM processors and OS environments; adaptable for embedded, telematics, or gateway hardware.
- Scalable & customizable: Feature selection, memory footprint, and transport layers can be tailored to customer needs.
- Fast time-to-market: Using a pre-validated stack reduces development effort, allowing quicker deployment.
- Standards compliant: Full compliance with ISO 14229 ensures interoperability with ECUs from different vendors and future-proofing against evolving industry standards.
Contact mktg@iwave-global.com for more information & enquires.
