1. Simulink DDS Block Set
By Mark McBroom

2. What is DDS? “Data Distribution Service” OMG Standard
IDL data interface definition
Publish-subscribe anonymous communication
Targeted for high-performance and real-time systems
Deterministic Data Delivery
Highly configurable
Supported OS’s: Windows, Linux, VxWorks, Integrity
Multiple vendors : Free and paid implementations
RTI DDS
PrismTech Opensplice
Twin Oaks
OCI OpenDDS

3. Simulink/DDS Integration
Goal 1: Allow Simulink simulation to participate in a DDS-based system
Simulink model
MATLAB model ( future? )
Goal 2: Code generated from Simulink model complies with DDS API.

4. DDS Blockset Supports both Simulation and Code Generation
DDS Topic Type  Simulink Bus
QoS via XML profiles
Based on RTI implementation. Working with RTI.
OpenSplice support is possible
MATLAB support is possible
Implemented as inlined C S-Functions

5. DDS Blockset
Dynamic Data API avoids need to compile DDS S-Functions code when changing Topic Types
Introduces performance penalty
Block dialog for setting key params, selecting QoS Library and profile
Limitations
Listeners not supported
Simulink Accelerated mode not supported
Wait-set conditions ( except for timeout) hard coded.
No topic filtering
Nested arrays of Buses (structs). Working with RTI to resolve.
Topic keys not supported
Strings, sequences not supported