Using “Software Component Descriptions“ as
input, the „Virtual Functional Bus“ validates the
interaction of all components and interfaces
before software implementation.
AUTOSAR defines the application environment
so that the latter can be
kept in a consistent form. The environment
defines a component’s
interface to the rest of the ECU and
the vehicle. The abstraction of the environment
is called the Virtual Function
Bus – or VFB.
A software component
is connected to the virtual function
bus in order to be able to communicate
either with other software components
or in order to use input and
output functions. In other words, the
virtual function bus acts as a communications
matrix connecting I/O units
and software components.
