Method for automatically generating communication data format of electric control unit based on AUTOSAR (Automotive Open System Architecture)

Abstract

The invention discloses a method for automatically generating a communication data format of an electric control unit based on an AUTOSAR (Automotive Open System Architecture), comprising the following steps of: (1) according to the system configuration of the AUTOSAR, analyzing and generating model objects of hardware topology and a software component; obtaining a mapping relationship from the software component to the electric control unit and communication interface information of the software component; (2) according to the mapping relationship from the software component to the electric control unit and the communication interface information of the software component, obtaining all data elements of each electric control unit for data communication; (3) according to data types and bit widths of the data elements, generating communication data formats corresponding to different communication protocol layers from the data elements; and (4) storing the mapping relationship between the data elements and the communication data formats of all the electric control units in the system mapping of the AUTOSAR. The method disclosed by the invention has the advantages of simple development process, low system design complexity, clear and compact communication data format structure, wide application range and high development efficiency.

Description

technical field [0001] The invention relates to the field of smart cars, in particular to an AUTOSAR-based software development technology. Background technique [0002] AUTOSAR (Automotive OpenSystem Architecture) is an open system architecture for automotive electronics. System Configuration is an important link defined in the AUTOSAR methodology. It mainly specifies configuration information such as hardware topology, network communication, and system mapping in the system. [0003] System mapping specifies the mapping relationship between the software components used in the current system and the electronic control unit, and realizes the decoupling of software and hardware. Among them, the software component model includes software component type, port, interface, connector and other information. The software component type is divided into two types: composite component (CompositionSWC) and atomic component (AtomicSWC) from the perspective of individual detachability. Co...

AI Technical Summary

Problems solved by technology

[0006] In the traditional AUTOSAR development process, the mapping between data elements and communication data formats is done manually according to the description of software components. The establishment process relies on the personal experience and tendency of engineers. The implementation process is complex and diverse, difficult and complex, and time-consuming to create and debug.

Especially when the scale of the system is gradually increasing, because the AUTOSAR configuration information is described in XML, which is not well readable, it is difficult to manually establish the network signal and data mapping relationship to be comprehensive and accurate

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