foreword
The development of vehicle controller software in AUTOSAR Methodology (AUTOSAR Methodology) involves system level, ECU level and software component level. The system level mainly considers the system functional requirements, hardware resources, and system constraints, and then establishes the system architecture; the ECU level configures the ECU according to the abstracted information; while the system level and ECU level design, it is accompanied by the development of the software component level. Each link above has a good communication interface, and uses a unified arxml (AUTOSAR Extensible Markup Language) description file to construct the AUTOSAR methodology. The "top-down" software component design and VFB implementation method in the AUTOSAR methodology is shown in Figure 2.16, and the system implementation method within a single ECU is shown in Figure 2.17.
Figure 2.16 AUTOSAR methodology - "top-down" software component design and VFB implementation method
Figure 2.17 AUTOSAR methodology - a schematic diagram of the system implementation method inside a single ECU
Before development, it is necessary to write the system configuration input description file, which includes the following three parts.
- ① Software component description (SW-Component Description