How does a UDS tool communicate and what are the different layers of Autosar.

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Accepted Answer

A UDS tool communicates through a diagnostic protocol and Autosar has four layers: Application, RTE, BSW, and MCAL.

UDS tool communicates through a diagnostic protocol called Unified Diagnostic Services (UDS)
Autosar has four layers: Application, Runtime Environment (RTE), Basic Software (BSW), and Microcontroller Abstraction Layer (MCAL)
Application layer contains the software components that implement the application functionality
RTE layer provides communication between the application and BSW layers
BSW layer contains the software components that provide basic services to the application
MCAL layer provides an abstraction of the hardware-specific features of the microcontroller
Example of UDS tool is Vector CANoe.DiVa
Example of Autosar implementation is Infineon's AURIX microcontroller family

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