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RTA Knowledge Base

RTA Knowledge Base / Complex Devices

How to Create a Cdd SWC to access MCAL Module

Introduction

This example workflow describes how to create a basic Cdd in an RTA-CAR project.

The steps required to create and initially configure an RTA-CAR project are covered in the other workflows in this User Guide, so in this workflow we take an existing single core

project (based on the VRTA_Standard Starter Kit for RTA-CAR 8) and we extend that sample project to contain a Cdd.

If you wish to follow along with this workflow, you will need to import the aforementioned Start Kit into your ISOLAR-AB workspace.

Prerequisites

The workflow below is designed to be stand-alone and it does not have any prerequisites beyond the import of the Starter Kit.

It is assumed that you are already familiar with how to create and configure an AUTOSAR project with ISOLAR-AB.

If you’ve not done so already, we recommend that you review (and preferably work through) Workflows 01, 02 and 03 to gain a better understanding of ISOLAR-AB and the tools

available to create and configure an AUTOSAR project.

Understanding Cdd in AUTOSAR Context

A Complex Driver (Cdd) is a software entity not standardized by AUTOSAR that can access or be accessed via AUTOSAR Interfaces and/or Basic Software Modules APIs.

A CDD may need to interface to modules of the layered software architecture

A module of the layered software architecture may need to interface to a CDD

A CDD may need to interface SW-Cs via Rte

The project will be composed by an application SWC that will exchange data with the CDD. The application SWC will have a required port for received data and a provided port for

transmitted data. The CDD will be a CDD-SWC with ports complementary to the application SWC.

Since in this example an existing driver will be used, taken from the ETAS Virtual MCAL, the CDD SWC will actually be a simple wrapper of functions that creates a proper interface

between RTE and the driver.

The picture below shows a building block view of the project we are going to create:

2024/8/5 09:32

How to Create a Cdd SWC to access MCAL Module - RTA Knowledge Base - RTA Hotline Confluence

https://rtahotline.etas.com/confluence/display/RH/How+to+Create+a+Cdd+SWC+to+access+MCAL+Module

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