Go to the examples folder from your directory and copy the example model sldvCrossReleaseExample and S-Function files, rel_sfcn.c, rel_comp.c, and rel_sfcn.tlc in the current working folder. Copy the header files rel_comp.h into the current working folder. You use the example model and supporting files in R2015b for a Cross-Release Code Integration (Embedded Coder) workflow.

In MATLAB R2015b, open sldvCrossReleaseExample_15b model from the current working folder.

open_system('sldvCrossReleaseExample_15b');

Compile the S-function by using the function legacy_code.

def = legacy_code('initialize');
   def.SFunctionName = 'rel_sfcn';
   def.OutputFcnSpec = 'uint8 y1 = relational_bound(uint8 u1)';
   def.HeaderFiles = {'rel_comp.h'};
   def.SourceFiles = {'rel_comp.c'};
   def.IncPaths = {pwd};
   def.SrcPaths = {pwd};
   def.Options.supportCoverageAndDesignVerifier = true;
   legacy_code('sfcn_cmex_generate', def);
   legacy_code('compile', def);

To simulate the model and generate the coverage report, in the Simulink Editor, click the Run button. See View Coverage Results in Simulink Canvas (Simulink Coverage).

After the simulation, the coverage report indicates that 50% coverage is achieved for sldvCrossReleaseExample_15b model.

To generate code using Embedded Coder, from the Apps tab, select Embedded Coder. For more information, see Generate Code Using Embedded Coder (Embedded Coder).

In the C Code tab, click Generate Code.

The model is preconfigured with these code generation settings.

set_param(sldvCrossReleaseExample_15b,'SystemTargetFile','ert.tlc');
set_param(sldvCrossReleaseExample_15b,'PortableWordSizes','on');
set_param(sldvCrossReleaseExample_15b,'SupportNonFinite','off');
set_param(sldvCrossReleaseExample_15b,'GenCodeOnly','on');
set_param(sldvCrossReleaseExample_15b,'SolverMode','SingleTasking');
set_param(sldvCrossReleaseExample_15b,'ProdEqTarget','on');

The software generates C code for the model and saves the files in the default folder location <current_folder>\sldvCrossReleaseExample_15b_ert_rtw.

Save the configuration set of the model sldvCrossReleaseExample_15b to a MAT-file. This ConfigSet is used to set the configuration set of the model in R2018b and later releases.

config_set = getActiveConfigSet('sldvCrossReleaseExample_15b');
copiedConfig = config_set.copy;
save('copiedConfig.mat','copiedConfig');
        

In MATLAB R2018b or later releases, import the components exported from R2015b.

Add Inport and Outport ports to the sldvCrossReleaseExample_15b_R2015b_sil block and save the model as sldvCrossReleaseExample_sil_18b.

Apply the model configuration set similar to R2015b model.

load('copiedConfig.mat');
attachConfigSet('sldvCrossReleaseExample_sil_18b', copiedConfig, true);
setActiveConfigSet('sldvCrossReleaseExample_sil_18b', copiedConfig.Name);

Set the simulation mode to Software-in-the-Loop (SIL). To simulate the model, in the harness model, click the Run all button.

To generate test cases for Embedded Coder generated code, on the Design Verifier tab, select Target > Code Generated as Top Model and click Generate Tests. For more information, see Generate Test Cases for Embedded Coder Generated Code.

After Simulink Design Verifier analysis, the software generates the test cases and saves the sldvData in folder at default location <current_folder>\sldv_output\sldvCrossReleaseExample_sil_18b.

In R2015b, open the model.

open_system('sldvCrossReleaseExample_15b');

Update the sldvData.ModelInfomation.Name field in sldvData same as the model name in older release. For example, sldvCrossReleaseExample_15b.slx.

Create a harness model by using the sldvData created in R2018b or later releases. This data consists of test cases generated from Embedded Coder generated code. In the dataFile, type the location of the sldvData generated for sldvCrossReleaseExample_sil_18b model.

sldvmakeharness('sldvCrossReleaseExample_15b.slx','dataFile')

To simulate the model by using all the test cases, click the Run all (Coverage) button in the harness model.

The software simulates all the test cases and generates a coverage report. The report indicates that 100% coverage is achieved for sldvCrossReleaseExample_15b model.