AUTOSAR 4.3.0 Franca IDL软件组件集成指南

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Integration of Franca IDL Software Component Descriptions

AUTOSAR CP Release 4.3.0

• An interface that contains an operation m and a declaration that the required

AUTOSAR port p is typed by this interface.

• A component type F with a provided port that is also typed by this interface.

• An instance f of F in the composition type AC.

• A connector of the open AUTOSAR port p and the port of the new component

type F in the composition type AC.

Thus within the AUTOSAR software component description now the desired intercon-

nection of the AUTOSAR component instance a and the Franca component instance f

is represented.

Figure 1.3: Franca-to-AUTOSAR Translation

The opposite scenario – a GENIVI methods requests an AUTOSAR operation – is

of no further interest for the Franca-to-AUTOSAR translation, because a request is

not represented in a Franca interface. The Franca interface could be translated to an

AUTOSAR component type, but neither a new AUTOSAR instance would be generated

nor a connection.

Sender receiver communication instead of client server communication (operation call-

ing) is handled in the same way as the operation call scenario described above. The

provision of signals is expressed in Franca IDL by broadcasts. A Franca instance im-

plementing an interface that contains a broadcast is translated to an AUTOSAR com-

ponent that offers a data element of the same data type as the broadcast at a provided

port. The latter can be connected to a port of an AUTOSAR component that requires

the data element.

12 of 71

— AUTOSAR CONFIDENTIAL —

Document ID 663: AUTOSAR_TR_FrancaIntegration

Integration of Franca IDL Software Component Descriptions

AUTOSAR CP Release 4.3.0

1.4.2 Integrated System Description as Franca Model

A scenario in which an AUTOSAR component offers an operation for a GENIVI com-

ponent is depicted in Figure 1.4. In this case the AUTOSAR Software Component

Description is complete, but there is no component instance that requests the opera-

tion op provided at port q of component B. The Franca model is yet empty because the

request for an operation cannot be expressed. The information that there is an instance

g that requests the AUTOSAR operation op is represented in the Franca Connector. In

this (artificial) example g is a Franca component instance that implements none of the

considered Franca interfaces. It is only introduced to define within the complete system

description who calls the operation at port q of the AUTOSAR component instance b.

The AUTOSAR-to-Franca translation adds an interface B with a method op to the

Franca Model that can now be used by other Franca components. Since instances

and connections are not represented in Franca IDL this is all the translation does.

Figure 1.4: AUTOSAR-to-Franca Translation

1.4.3 Complete View

Putting together the scenarios discussed above we obtain the two complete application

level system views that have been announced as goal of the Franca Integration. Fig-

ure 1.5 shows the initial situation: descriptions of application components as Franca

models, descriptions of application components as AUTOSAR software component

descriptions, and a Franca Connector. The results of the Franca-to-AUTOSAR transla-

tion and the AUTOSAR-to-Franca translation are shown in Figure 1.6. The AUTOSAR

description is extended by component types (AtomicSwComponentTypes) and in-

stances (SwComponentPrototype) for the Franca interfaces and instances, an inter-

face that contains the method that is offered by a Franca component and requested

by an AUTOSAR component, and the two connections that correspond to the two con-

13 of 71

— AUTOSAR CONFIDENTIAL —

Document ID 663: AUTOSAR_TR_FrancaIntegration

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