Adding New Ports - 2025.2 English - UG1483

When defining a black box port interface, it is necessary to add input and output ports to the block descriptor. These ports correspond to the ports on the module you are importing. The port names declared in the block descriptor object determine the Black Box block’s port interface in your model. SysgenBlockDescriptor provides methods for adding input and output ports:

Adding an input port:

this_block.addSimulinkInport('din'); 

Adding an output port:

this_block.addSimulinkOutport('dout'); 

The string parameter passed to methods addSimulinkInport and addSimulinkOutport specifies the port name. These names need to match the corresponding port names in the imported module.

Adding a bidirectional port:

config_phase = this_block.getConfigPhaseString;
if (strcmpi(config_phase,'config_netlist_interface'))
 this_block.addInoutport('bidi');
 % Rate and type info should be added here as well
end 

Bidirectional ports appear only in the generated HDL. Model Composer supports them during netlisting, but they do not appear in the diagram. As such, it is important to only add the bi-directional ports when Model Composer is generating the HDL. The if-end conditional statement is guarding the execution of the code to add-in the bi-directional port.

It is also possible to define both the input and output ports using a single method call. The setSimulinkPorts method accepts two parameters. The first parameter is a cell array of strings that define the input port names for the block. The second parameter is a cell array of strings that define the output port names for the block.