MATLAB: Do I get a build error in the PARROT minidrone model

Embedded Coderminidronesparrotsimulink

Why do I get the following error while building the example model, 'parrot_gettingstarted', which is set for PARROT Rolling Spider?

Best Answer

The models configured for PARROT Rolling Spider must have 2 inports and 2 outports. The specifications of the root level ports and signals are as follows:

Inport 1 is for the 'AC cmd' signal; its alias is 'Cmd_inport. Its data type is 'Bus: CommandBus' and the signal's storage class is 'ExportedGlobal'.
Inport 2 is for the 'Sensors' signal; its alias is 'sensor_inport'. Its data type is 'Bus: SensorsBus' and the signal's storage class is 'ExportedGlobal'.
Outport 1 is for the 'Actuators' signal; its alias is 'motors_outport'. Its data type is 'double' and the signal's storage class is 'ExportedGlobal' with a size of 4.
Outport 2 is for the 'Flag' signal; its alias is 'flag_outport'. Its data type is 'uint8' and the signal's storage class is 'ExportedGlobal' with a size of 1.

Based on the error message, the issue could be due to one of the following cases:

The ‘Flag’ Outport is not present in the model.
The ‘Flag’ Outport is present in the model, however the signal into the port is not of the type specified in above table.
The ‘Flag’ Outport is present in the model at the root level and the signal into the port is of the type specified in the above table. However, the signal in the subsystem, leading up to the root level ‘Flag’ Outport is fed with a ‘Ground’ source block.

Related Solutions

MATLAB: How to programmatically replace a referenced model with a Subsystem in Simulink

Assuming that you have a 'parent.slx' model which references a model 'child.slx' (whose block name is 'Model' in the parent Simulink model), use either of the following options:

>> open_system('parent');

>> add_block('built-in/Subsystem',['parent/mySub']);

>> load_system('child');

>> Simulink.BlockDiagram.copyContentsToSubsystem('child',['parent/mySub']);

>> pos = get_param('parent/Model','position');

>> delete_block('parent/Model');

>> set_param('parent/mySub','position',pos);

>> open_system('parent');

>> load_system('child');

>> convert2subsys('child');

>> add_block('child/Subsystem','parent/mySub');

>> pos = get_param('parent/Model','position');

>> delete_block('parent/Model');

>> set_param('parent/mySub','position',pos);

>> close_system('child',0);

where 'convert2subsys' is defined at the following link:

https://uk.mathworks.com/help/simulink/slref/simulink.blockdiagram.createsubsystem.html#br5mgzk-6

Please refer to the attachment for further details.

MATLAB: How to create signals that have specific attributes in Simulink 7.4 (R2009b)

To assign and validate signal attributes in a model, use the Simulink.Signal class to define a signal object in the MATLAB workspace. This will allow you to define your signal with specific attributes. You can also use this signal object to initialize a signal in your model. To do this, follow these steps:

1) Define a Simulink.Signal object in the workspace:

mySig = Simulink.Signal
mySig.RTWInfo.StorageClass = 'ExportedGlobal'  % Set its storage class to 'ExportedGlobal'
mySig.InitialValue = '10' % Set the signal's initial value

2) In your model, select a signal to validate against MySig object. Right click on a signal, choose signal properties and name the signal as mySig. Check the 'Signal name must resolve to Simulink.Signal object' option.

To learn more about Simulink.Signal objects, please refer to:

https://www.mathworks.com/help/releases/R2012b/simulink/slref/simulink.signal.html

Best Answer

Related Solutions

MATLAB: How to programmatically replace a referenced model with a Subsystem in Simulink

MATLAB: How to create signals that have specific attributes in Simulink 7.4 (R2009b)

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