MATLAB: How to ensure that all signals that are input to a Bus Creator Block show up in the respective generated code for this block

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When I name a signal in a subsystem, and then input it to a Bus Creator Block in the top-level mode, the generated code for the signal does not always show up where I want it to be. Regardless of where I name the signal, I want it to be defined in the generated code for the Bus Creator since that way the code looks similar to the Simulink model. How can I ensure that all signals that are input to a Bus Creator Block show up in the respective generated code for this block?

Best Answer

The signal must be configured as a "Model default" Simulink Signal. To do this, in the model:

1. Right-click on the signal

2. Open Properties

3. On the Code Generation tab

4. Set the type as "Model default".

This will ensure the signal gets renamed as it enters the Bus Creator to be a Bus signal.

Related Solutions

MATLAB: What is the criterion for being able to select individual elements from an input signal to the Bus Creator block in Simulink

When a signal is attached directly from a Mux block to a Bus Creator block, the Bus Creator block is able to determine what signals went into the Mux block in order to produce the resulting signal. This is because the Mux block is a virtual block. It is this property that allows the Bus Creator to choose specific elements of the vector input.

When the Mux block output is sent through a Gain block before being sent to the Bus Creator, the Bus Creator can no longer pick specific elements of that signal because the Gain block is not a virtual block. If you want the Bus Creator block to pick specific elements of the signal, consider using a Selector block or Demux block to separate the elements into different signals again, then Mux the signals again.

MATLAB: How to have a Bus Selector block accept signal from an Inport block in a subsystem in Simulink

In order to create and build a subsystem, which has an Inport block feeding into a Bus Selector block, perform the following steps:

1. Double click on the Inport Block to view the Block Properties. Click on the Signal Specification tab and check ‘Specify properties via bus object’. Keep the default name as ‘BusObject’. You will have to do this for the Inport blocks at the root level and also within the subsystem.

2. Create the bus object, BusObject, by using the Bus Editor. To create the bus object and edit its properties execute the following code at the MATLAB command prompt:

BusObject = Simulink.Bus
buseditor

In the resulting window, the Bus Editor, add the signals that the input bus will have with the appropriate names. Verify that the change has been saved by typing ‘BusObject’ at the prompt.

3. You should now be able to right click on the system and build it by selecting Real-Time Workshop from the menu.

Best Answer

Related Solutions

MATLAB: What is the criterion for being able to select individual elements from an input signal to the Bus Creator block in Simulink

MATLAB: How to have a Bus Selector block accept signal from an Inport block in a subsystem in Simulink

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