Real-Time Workshop User's Guide

Using the TCP/IP Implementation

This section discusses how to use the TCP/IP-based client/server implementation of external mode with real-time programs on a UNIX or PC system. Chapter 12, Targeting Tornado for Real-Time Applications illustrates the use of external mode in the Tornado environment.

In order to use Simulink external mode, you must:

• Specify the name of the external interface MEX-file in the External Target Interface dialog box. By default, this is ext_comm.
• Configure the template makefile so that it links the proper source files for the TCP/IP server code and defines the necessary compiler flags when building the generated code.
• Build the external program.
• Run the external program.
• Set Simulink to external mode and connect to the target.

This figure shows the structure of the TCP/IP-based implementation.

Figure 5-12: TCP/IP-Based Client/Server Implementation for External Mode

The following sections discuss the details of how to use the external mode of Simulink.

Overview

The External Interface MEX-File