Mixed-Mode Testing
Hybrid HIL/SIL Testing: Planning & Implementation
Thundercomm ADAS-ECU + Snapdragon Ride + CARLA Simulation: Find 90% of critical bugs early, before real test drives begin.
Why Hybrid? Cost vs. Safety
| Test Mode | Cost | Confidence | Timeline |
|---|---|---|---|
| Pure SIL (CARLA) | Low | 60% | Fast |
| Pure HIL (Test Drive) | High | 95% | Long |
| Hybrid HIL/SIL ✓ | Moderate | 90% | Medium |
Architecture: Thundercomm ECU + Snapdragon Ride
CARLA Simulation Environment
v0.9.15 · ROS2// Synthetic sensor feeds for ADAS validation
Scenario
Roads & Intersections
Traffic
Dynamic Vehicles
Pedestrians
Randomized Agents
Sensors
Camera · LiDAR · Radar
Simulated Sensor Feeds [ROS2]
Thundercomm ADAS-ECU
Hardware · ASIL-D// Production-grade inference platform
Snapdragon Ride Flex SoC
- Oryon CPU — ARMv9 architecture
- Hexagon NPU — INT8 quantized inference
- Safety Island — ISO 26262 ASIL-D compliant
Real Output [CAN / Ethernet]
Vehicle Actuation Commands
Real-timeBrake Command
0.00 – 1.00 [normalized]
Steering Angle
±700° [deg]
Implementation Roadmap
| Phase | Milestone | Deliverable |
|---|---|---|
| Setup | Infrastructure | ECU Firmware baseline, CARLA scenario library |
| Baseline | Core Testing | 10 core scenarios, latency profile |
| Fault Injection | Resilience | 5 critical faults, watchdog validation |
| Environmental | Edge Cases | Rain, night, heavy traffic scenarios |
| Traceability | Evidence | 100% test-to-requirement links |
| Assessment | Sign-off | ASPICE report, ECU ready for HiL |
3.5x
ROI vs. HIL-only
90%
Bugs found early
6
Phases
-40%
Cost vs. HIL-only