COM stack overview

The Communication Stack is a suite of software modules that handle communication tasks in AUTOSAR-compliant systems. It is responsible for transmitting and receiving data across various in-vehicle networks, such as CAN, local interconnect network (LIN), Ethernet, and FlexRay, among others. Its structure facilitates modular and scalable communication across different automotive ECUs.

Figure 7.1 shows the main components of the COM stack:

Figure 7.1 – COM layered architecture

In Figure 7.1, the communication stack of AUTOSAR is segmented into three main components:

• The data path handling signals and PDU and transmission (A)
• The control path handling the state of the communication channels (B)
• Network management (C)

These parts of the communication stack are distributed across various layers: the Service Layer, the ECU Abstraction Layer, and the Hardware Layer. This distribution illustrates how AUTOSAR manages...