coder.mapping.utils.create

Create code mappings object for configuring data and function interface for C and C++ code generation

Syntax

coderMapObj = coder.mapping.utils.create(simulinkModel)

Description

coderMapObj = coder.mapping.utils.create(simulinkModel) creates a code mappings environment for the specified model, if one does not exist, and returns it as the object coderMapObj. Code mappings associate model data elements and functions with configurations for C or C++ code generation. If code mappings exist for the specified model, the function returns those code mappings as the object coderMapObj.

Examples

Programmatically Create and Use Code Mappings of Simulink$${}^{\circledR }$$ Models

Use the programmatic interface to create and use code mappings objects of Simulink models.

Load the model NoCoderMapping.

simulinkModel = "NoCoderMapping";
load_system(simulinkModel);

Use a try-catch block to determine whether a code mappings object exists for the model. Inside the try block, attempt to retrieve the existing object by using function coder.mapping.api.get. Inside the catch block, create a new code mappings object by using the function coder.mapping.utils.create. Store the code mappings object in the variable codeMapObj.

Add print messages to show whether the model had an existing code mappings object or not.

try
  codeMapObj = coder.mapping.api.get(simulinkModel);
          fprintf("" + ...
            " ========================================================\n" + ...
            " The model already had code mappings.\n" + ...
            " ========================================================\n");
catch
          fprintf("" + ...
            " ==========================================\n" + ...
            " The model does not have code mappings.\n" + ...
            " Creating new code mappings for the model.\n" + ...
            " ==========================================\n");
  codeMapObj = coder.mapping.utils.create(simulinkModel);
end

 ==========================================
 The model does not have code mappings.
 Creating new code mappings for the model.
 ==========================================

Retrieve the storage class of input port inport_1 of the model.

getInport(codeMapObj,"inport_1","StorageClass")

ans = 
'Auto'

Set the storage class of input port inport_1 to ExportedGlobal.

setInport(codeMapObj,"inport_1",StorageClass="ExportedGlobal")

Use the same try-catch block to see how the function coder.mapping.api.get is now able to retrieve the existing code mappings of the model.

try
  codeMapObj = coder.mapping.api.get(simulinkModel);
          fprintf("" + ...
            " ========================================================\n" + ...
            " The model already had code mappings.\n" + ...
            " ========================================================\n");
catch
          fprintf("" + ...
            " ==========================================\n" + ...
            " The model does not have code mappings.\n" + ...
            " Creating new code mappings for the model.\n" + ...
            " ==========================================\n");
  codeMapObj = coder.mapping.utils.create(simulinkModel);
end

 ========================================================
 The model already had code mappings.
 ========================================================

Retrieve the storage class of input port inport_1 of the model. Notice that it is the storage class that you set previously.

getInport(codeMapObj,"inport_1","StorageClass")

ans = 
'ExportedGlobal'

Close the model without saving it.

close_system(simulinkModel,false)

Input Arguments

simulinkModel — Name of model

handle | character vector | string scalar

Simulink^® model for which to create and return a code mappings object, specified as a handle or a character vector or string scalar with the model name (without the .slx file extension), or the relative or absolute path of the model file (including the .slx file extension).

Note

The model must be loaded (for example, by using load_system).

Example: "configModel"

Data Types: char | string | handle

Output Arguments

coderMapObj — Code mapping object

CodeMapping object | CodeMappingCPP object

The model code mappings, returned as a CodeMapping object or a CodeMappingCPP object.

Output	Input Object
coder.mapping.api.CodeMapping	Simulink model configured for C code generation
coder.mapping.api.CodeMappingCPP (Embedded Coder)	Simulink model configured for C++ code generation

Version History

Introduced in R2020b