Vector Informatik Chiisai Launches Open HAL Specification

Vector Informatik Chiisai Launches Open HAL Specification

Vector Informatik GmbH has introduced Chiisai, a fully open and royalty-free specification intended to simplify development of hardware abstraction layers for small microcontrollers. These microcontrollers are commonly used in sensors, actuators, and other compact embedded systems. Vector Informatik says the specification establishes standardized interfaces for relevant basic and communication functions while separating drivers from middleware. This architecture is intended to support software component reuse across different hardware platforms while reducing software footprint and integration effort. The approach addresses development requirements for compact embedded systems where software portability and efficient integration can be important considerations.

Chiisai Standardizes Interfaces for Embedded Software

The Chiisai specification defines standardized interfaces for basic and communication functions and creates a separation between hardware drivers and middleware. This structure allows software components to be reused when moving between different microcontroller hardware platforms, reducing the need to adapt software for each individual implementation. By establishing a common interface layer, Chiisai is designed to reduce software footprint and integration effort for applications using small microcontrollers. The specification therefore focuses on creating a consistent software foundation for compact embedded systems while maintaining flexibility across hardware platforms from different semiconductor manufacturers.

Infineon and Microchip Support Open Ecosystem

Vector developed Chiisai in close collaboration with Infineon Technologies, with support from other semiconductor manufacturers including Microchip Technology. The collaboration reflects an effort to establish an open, vendor-neutral software ecosystem for microcontrollers rather than tying software interfaces to a single hardware supplier. By involving multiple semiconductor manufacturers, the specification is intended to provide a common foundation that can support software reuse across compatible microcontroller platforms. This collaborative development model also gives Chiisai relevance for embedded-system developers seeking standardized interfaces across hardware supplied by different semiconductor companies.

MICROSAR IO Supports Chiisai-Compliant Hardware

Vector’s new software base layer, MICROSAR IO, has interfaces that are fully compatible with the Chiisai specification. As a result, MICROSAR IO can be deployed on hardware platforms equipped with a Chiisai-compliant hardware abstraction layer without requiring additional customization. This compatibility connects Vector’s software base layer directly with the open interface approach established by Chiisai. For developers, the stated compatibility can reduce platform-specific adaptation work when implementing MICROSAR IO on supported hardware. The relationship between the specification and MICROSAR IO also demonstrates how the standardized interfaces are intended to operate across the software and hardware layers of compact microcontroller-based systems.

Industry Impact & Outlook

Chiisai could affect embedded software development by making hardware abstraction interfaces more consistent across supported microcontroller platforms, potentially reducing repeated driver and middleware integration work. Its vendor-neutral approach also creates a framework through which semiconductor manufacturers can support common software interfaces rather than requiring platform-specific adaptations. The collaboration involving Vector Informatik GmbH, Infineon Technologies, and Microchip Technology indicates an emphasis on broader ecosystem participation, while MICROSAR IO compatibility provides an immediate software implementation aligned with the specification. Future relevance will depend on adoption by additional manufacturers and developers and on the continued availability of Chiisai-compliant hardware platforms.

Frequently Asked Questions

What is the Chiisai specification?
Chiisai is an open and royalty-free specification from Vector Informatik that defines standardized interfaces for hardware abstraction layers used with small microcontrollers. It separates drivers from middleware to support software reuse across different hardware platforms. The specification covers relevant basic and communication functions and is intended to reduce software footprint and integration effort for compact embedded systems. It was developed with Infineon Technologies and supported by other semiconductor manufacturers, including Microchip Technology, as part of an effort to establish a vendor-neutral microcontroller software ecosystem.

How does MICROSAR IO relate to Chiisai?
MICROSAR IO is Vector’s new software base layer, and its interfaces are fully compatible with the Chiisai specification. This compatibility allows MICROSAR IO to be deployed on hardware platforms using a Chiisai-compliant hardware abstraction layer without additional customization. The integration is designed to connect Vector’s software layer with standardized interfaces across supported microcontroller hardware. This can reduce platform-specific adaptation requirements when implementing the software on compatible systems, while maintaining the separation between drivers and middleware defined by the Chiisai specification.