Lightweight embedded software for small ECUs

Vector has completed its modular platform for the development of Software-Defined Vehicles. The new embedded software product MICROSAR IO targets low-cost and resource-constrained MCUs. A collaboration project with MICROSAR IO for Infineon PSOC4 HV controllers has resulted in a new HAL specification.

MICROSAR IO is a lightweight, secure and efficient base layer. It is developed for small mechatronic ECUs such as sensors and actuators, prioritising reusability and cost efficiency while remaining independent of OEM constraints. It is especially suited for automotive subsystems such as battery management, parking sensors, and HVAC systems, where efficiency and low resource consumption are essential.

MICROSAR IO enables seamless integration into the vehicle network by offloading complex OEM-specific tasks to a companion ECU. It abstracts hardware at the mechatronic layer, simplifying integration with higher system layers such as high-performance compute modules or zonal controllers. This supports OEMs' 'shift-north' strategy, consolidating functionality in high-performance compute modules.

The basic configuration requires only 32k ROM and 8k RAM, including an operating system, communication and software update capabilities. The software is fully integrated into the VS Code PlatformIO extension, providing an IoT development experience in one environment. Developers can manage the complete development cycle – from project setup to building, downloading, and debugging hardware – without switching between tools, accelerating development.