Firmware Hardware-in-the-Loop (HIL) System for Automotive ECU Validation

Application Summary

TMCS developed a Firmware HIL system for validating embedded firmware in automotive ECUs under simulated vehicle conditions. The platform uses a modular PXIe System with LabVIEW Testing, VeriStand Simulation, and TestStand Automation to enable Real-Time Simulation and Vehicle ECU Testing. It supports CAN FD Testing, LIN Communication, and multi-device interaction ensuring reliable System Validation before deployment.
Author: TMCS Team | Theta Measurement And Control Solutions Pvt. Ltd.

CHALLENGE

Automotive firmware must operate reliably across complex ECU networks with multiple communication
protocols. The challenge was to design a HIL Testing System capable of replicating real-time control behavior while validating Communication Testing, diagnostics, and signal response. The system required robust CAN FD Testing, multi-ECU integration, and automated execution to ensure repeatable Embedded Testing and accurate Network Validation.

SOLUTION

TMCS delivered a customized Firmware HIL platform based on a modular PXIe System integrated with LabVIEW Testing, VeriStand Simulation, and TestStand Automation. The system interfaces the DUT with ECUs via CAN FD Testing and LIN Communication. Automated sequences enable Multi ECU Testing, diagnostics validation, and real-time monitoring, ensuring reliable Control Unit Testing and
comprehensive System Validation.

Test Types / Parameters Monitored

TEST TYPE	DESCRIPTION / PARAMETERS MONITORED
Firmware Functional Testing	Validates firmware logic under simulated control conditions
CAN FD Communication	Verifies message transmission, reception, and timing
Multi-Device Communication	Tests interaction across multiple ECUs
Automotive Diagnostics	Validates diagnostic protocols and fault reporting
Signal Monitoring	Monitors real-time response and communication behaviour

Specifications & Features

Feature	Description
Real-Time Simulation	Control system simulation using HIL architecture
CAN FD & LIN Interface	Supports automotive communication protocols
Multi-ECU Integration	Enables testing across multiple control units
Automated Test Execution	TestStand-based sequence automation
Data Logging	Structured logging for traceability and analysis

Technology Used

The system integrates a modular PXIe System for high-speed DAQ System and signal interfacing. LabVIEW Testing is used for application development, while VeriStand Simulation enables real-time model execution. TestStand Automation manages sequencing and reporting. The platform supports CAN FD Testing and LIN Communication ensuring accurate Automotive HIL and Network Validation.

Advantage / Benefit

The Firmware HIL platform enables accurate Embedded Testing in simulated vehicle environments. It supports Multi ECU Testing and Communication Testing, improving validation coverage. Automated execution enhances repeatability, reduces manual effort, and ensures reliable Automotive Diagnostics while improving efficiency and reducing development time.

Conclusion and Future Plan

The Firmware HIL system provides a scalable platform for Automotive HIL and firmware validation. By combining Real-Time Simulation, communication testing, and automation, it ensures reliable System Validation. Future enhancements may include advanced diagnostics, cybersecurity testing, and expanded support for next-generation vehicle network architectures.