Creating a block in Simulink

With all files in place, a new block can be created.

• Open the Simulink Library Browser
• Drag-and-drop a Level-2 MATLAB S-Function into the project

• Right-click the block
• Select Mask -> Create Mask...
• Carefully copy the settings depicted in the following images:

• Type options:
  

SPI1: D11
SPI2: D34

• Callback:
  

sfcn_signal_tower_chk();

• Click OK
• Right-click the block
• Select Block Parameters (M-S-Function)
• Fill in the parameters as follows:

• Click OK
• Change the block to a convenient size

At this point, the block has been created successfully showing twelve input ports.

By double-clicking the block, the user settable parameters are shown:

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