Vec-643

VEC-643 functions as an anchor term for a technology, protocol, product line, or designation in a research program. Approaching it broadly allows cross-disciplinary connections: engineering, computer science, biology, policy, and design. This paper treats VEC-643 as a modular system with identifiable components, behaviors, and impact vectors.

| Layer | Change Summary | |-------|----------------| | | Introduce a real‑time scheduler (FreeRTOS‑VEC‑Port) with priority‑based tasking. Move torque‑vectoring command handling into a high‑priority periodic task (2 ms period, deadline 4 ms). | | CAN Driver | Replace the current blocking driver with a non‑blocking, FIFO‑based ISR that posts messages to a Message Queue . Apply priority inversion protocol (priority inheritance mutex) for shared resources. | | CPU Load Management | Off‑load diagnostics and OTA handling to Core‑1 (dual‑core VEC). Implement load‑shedding for low‑priority background tasks during peak load. | | Safety & Timing | Update the Timing Model in MATLAB/Simulink, re‑run Worst‑Case Execution Time (WCET) analysis, and regenerate the Safety Annex . | | Testing Infrastructure | Extend the Hardware‑In‑The‑Loop (HIL) bench with a CAN‑stress generator to validate jitter under worst‑case bus traffic. | | Documentation | Revise VEC‑ARCH‑001 , VEC‑REQ‑018 , and VEC‑TEST‑023 to reflect architectural changes. | VEC-643

The low-power sleep modes (drawing just 1.2µA in deep sleep) combined with rapid wake-up times (under 50µs) position VEC-643 as an excellent choice for battery-powered IoT sensors. Municipal smart lighting controllers, environmental monitoring nodes, and asset trackers all benefit from the integrated analog-to-digital conversion and wireless-ready interface. VEC-643 functions as an anchor term for a