Multiprocessor Architecture Template

To create an SoC Blockset™ model for designing a system with two CPUs connected by Interprocess Data Channel blocks, use the Multiprocessor Architecture template. To create a project using the "Multiprocessor Architecture" template, follow the steps in the topic Create SoC Model Using SoC Blockset Template.

Template Structure

This template models two CPUs that are connected with a pair of interprocess communication channels. Use this template as a guide and replace the algorithms in the reference models. The Task Manager block in CPU1 executes a timer-driven task to run the CPU1 Executable reference model with the output, IPCCh1, sent to the Interprocess Data Channel block. The Task Manager block in CPU2 executes an event-driven task to run the CPU2 Executable reference model after using the input, IPCCh1, which is the output from CPU1. When the event-driven task completes, it outputs data, IPCCh2, to the Interprocess Data Channel block to return the result to CPU1.

Modify Project

Modify CPU1 Processor Model

In the MATLAB^® toolstrip, on the Project Shortcuts tab, click Open CPU1 Processor model. The processor wrapper contains a blue highlighted subsystem representing the user code for the processor algorithm. Open the Processor Algorithm subsystem and replace the Processor Algorithm block with your desired algorithm.

• Processor Algorithm — This block has one input and one output, implementing an increment operation. Replace this block with your own processor algorithm. Add inputs and outputs as required.

• IPC Ch2 Read — This Interprocess Data Read block reads available data from the Interprocess Data Channel block sent from CPU2.

• IPC Ch1 Write — This Interprocess Data Write block writes data to the Interprocess Data Channel block to be read by CPU2.

Modify CPU2 Processor Model

In the MATLAB toolstrip, on the Project Shortcuts tab, click Open CPU2 Processor model. Double-click the Task1 model block to open the task. The processor wrapper contains a blue highlighted subsystem representing the user code for the processor algorithm. Open the Processor Algorithm wrapper and replace the Processor Algorithm block with your desired algorithm.

• Processor Algorithm — This block has one input and one output, implementing an increment operation. Replace this block with your own processor algorithm. Add inputs and outputs as required.

• IPC Ch1 Read — This Interprocess Data Read block reads available data from the Interprocess Data Channel block sent from CPU1.

• IPC Ch2 Write — This Interprocess Data Write block writes data to the Interprocess Data Channel block to be read by CPU1.

Modify IPC Channel

The top model of this template also includes two Interprocess Data Channel blocks, which create a bidirectional communication path between CPU1 and CPU2. If you need to transfer more data between the two CPUs, you can add additional Interprocess Data Channel blocks or bundle data into the existing Interprocess Data Channel blocks.