Simulink design verifier generates test cases for model coverage and custom objectives to extend existing requirementsbased test cases. If the simulation mode is set to any other mode, model coverage is. Simulink coverage performs model and code coverage analysis that measures testing completeness in models and generated code. Modified conditiondecision coverage analysis by the simulink coverage software extends the decision and condition coverage capabilities. Collect model coverage data measure model coverage to indicate untested elements of your design during simulation. The simulink coverage software can only collect model coverage for a model. This model contains several blocks that have intrinsic decisions, places where control flow can take more than one path. Open the model for which you want a model coverage report.
Its primary interface is a graphical block diagramming tool and a customizable set of block libraries. These test cases drive your model to satisfy condition, decision, modified conditiondecision mcdc, and custom coverage objectives. If the total number of signals in your model exceeds 65535, or your model contains a signal whose width exceeds 65535, the software cannot record signal range coverage. Captures model coverage information based on the model coverage report. Collect code coverage data measure coverage for code generated from a simulink model or code within a simulink model to indicate untested elements of your design during simulation. Detect untested elements of your design using model coverage in simulink verification and validation. Model coverage for multiple instances of a referenced. Include model requirements and coverage data in a web view. At the end of the simulation, the tool reports the extent to which the run exercised potential simulation pathways through each covered object in the model. Nishaat vasi is a product marketing manager at mathworks. The simulink coverage software can only collect model coverage for a model if its simulation mode is set to normal, sil, or pil.
The coverage tool identifies all the blocks that have the saturation on integer overflow parameter enabled. This option appears only if you have simulink coverage software installed. Collect cumulative model coverage from successive simulation runs. The model you are testing must be on the matlab path or be in. If the combinatorial logic block has a single input element, the simulink coverage software reports only decision coverage, because decision and condition. This example shows how to increase test coverage beyond an initial test case. The coverage results explorer offers various functionality for processing, displaying, and reporting coverage results from previous simulations of your model. Review coverage information for the model in generated reports and in highlighted models to identify missing coverage and navigate to the associated requirements. This example shows how to use the configuration parameters dialog to enable coverage for a simulink model and adjust the type of information that is. Simulink coverage performs model and code coverage analysis that measures. Model coverage calculates how much a model test case exercises simulation. To select the coverage for matlab files option, you must select enable coverage analysis. Model coverage for multiple instances of a referenced model about coverage for model blocks. Click the generate report link at the bottom of the coverage results explorer window.
Modified conditiondecision coverage mcdc modified conditiondecision coverage analysis by the simulink coverage software extends the decision and condition coverage capabilities. Learn about the sections of a model coverage report the software creates for the toplevel model. To transform tunable model parameters into constant values for code generation, in the configuration parameters dialog box, on the math and data types pane, set default parameter behavior to. Matlab files enables coverage for any external functions called by matlab functions in your model. View coverage results in a model overview of model coverage highlighting. On the coverage pane of the configuration parameters dialog box, select enable coverage analysis. Pdf on the relationship between model coverage and code. It applies industrystandard metrics such as decision, condition, modified conditiondecision coverage mcdc, and relational boundary coverage to assess the effectiveness of simulation testing in models, software intheloop sil, and processorintheloop pil.
Model coverage only supports coverage for matlab functions configured for code generation. Set your export options using the web view export dialog box. Model based design for do178c software development with. Produce html report from model coverage objects matlab.
The simulink coverage software simulates a simulink model and reports model coverage data for the decisions and conditions of code in matlab function blocks. By default, generates coverage data for all referenced models where the simulation mode of the model block is set to normal, software intheloop sil, or processorintheloop pil. On the relationship between model coverage and code coverage using matlab s simulink. Measure coverage for softwareintheloop sil and processorintheloop pil tests of code generated with embedded coder or for any code called within simulink models using sfunctions, custom code in stateflow charts, and c caller blocks. For the types of coverage that model coverage performs, see types of model coverage. Validating design requirements using model coverage. Model coverage for matlab functions about model coverage for matlab functions. If the simulation mode is set to any other mode, model coverage is not measured during simulation.
We will address requirements driven development, model coverage testing, and static code analysis of embedded software. To add coverage data to a model, simulate the model with coverage enabled. By investigating these untested pathways, you can detect potential design errors and validate requirements. Simulink coverage measures model coverage and code coverage to indicate untested elements of your design, such as logical conditions, unintended. You can define matlab functions in matlab function blocks or in stateflow charts. Check the box next to saturation on integer overflow. The simulink coverage software simulates a simulink model and reports model coverage data for the decisions and conditions of code in matlab function. You must set up a coverage report for the model and simulate the model before you can use this option. Model coverage measurement is useful for applications that must comply with do 178c, iso 26262, and iec61508 standards. Code coverage for models in software intheloop sil mode and processorintheloop pil mode.
It analyzes blocks that output the logical combination of their. This article outlines a workflow for testing a cruise controller component using model coverage analysis. The title of this report is coverage by model the summary report lists and provides links to coverage reports for model block referenced models and external files called by matlab code in the model. It offers tight integration with the rest of the matlab environment and can either drive matlab or be scripted from it. For an example of signal range coverage data in a model coverage report, see signal range analysis. Simulink is a matlab based graphical programming environment for modeling, simulating and analyzing multidomain dynamical systems. Detect untested elements of your design using model coverage in simulink coverage.
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