Model Based Design and Code generation using TargetLink

1. Open a blank Simulink model.

2. Add a TargetLink Subsystem block.

3. Add a TargetLink MIL Handler block.

4. Save the model.

• TargetLink Main Dialog

  • Generates production code for the currently selected code generation unit (CGU).

  • The build processes (Build SIL/Build PIL) cover code generation, compilation and download for the respective simulation mode (SIL/PIL).

• Menu in the Simulink Editor

  • Generates code for the system or subsystem(s) currently selected.

• Context menu of the Data Dictionary Manager

  • Generates code for the selected CGU or a selected module of a code generation unit.

• Function block

  • Generates code for subsystems that are configured for incremental code generation (with the Enable

    Incremental Code Generation checkbox selected on the Incremental page).

• API function

  • Used for automation use cases

  • commands

    • tl_generate_code

    • tl_build_host

    • tl_build_target

• TargetLink Main Dialog

• DD

  • DD-based CGUs that reference the CodegenOptionSet object via their CodegenerationOptionSetRef property

  • Model-based CGUs in the model hierarchy of the root model whose TargetLink Main Dialog block references the CodegenOptionSet object via its Code Generator option set edit field.

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TLPredefinedOptionSet :default (general-purpose Code Generator options)

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Modifications

• Via the All Options button on the Advanced page of the TargetLink Main Dialog Block

• DD

• Hook Scripts

When you create a new DD project file, you can choose from predefined system templates.

• dsdd_master_basic.dd [System]

  • Provides the new DD workspace with a basic set of predefined DD objects, such as DD Typedef, DD VariableClass, and DD FunctionClass objects.

• dsdd_master_advanced.dd [System]

  • Provides the new DD workspace with additional predefined objects, such as DD Template objects and DD RTOS objects required for multirate code generation.

• dsdd_master_autosar4.dd [System]

  • Provides the new DD workspace with additional predefined objects, such as DD Typedef and DD Variable objects to be used in AUTOSAR SWCs, and a DD object for specifying AUTOSAR software components and interfaces. Use this template to work with the AUTOSAR 4.x standard.

• variable objects that describe a fixed set of properties and can be used globally.

• Using a variable object is useful if you often need to reference the same type of variable description or want to keep variable definitions consistent by sharing DD files with other team members of your workgroup.

Variable classes determine how the variables are created in the generated code

each properties combination represents a variable class

Predefined categories

• DISP -> Observation

• CAL -> Parameter Calibration

• MACRO -> C macros (constants)

• FCN -> Function Arguments

Use Cases - Module Separation

• Explicit Struct

• Implicit Struct

To specify code decorations, such as declaration statements, pragmas or memory

sections, for code elements.

basic example

function with shared/specific parameters

Embedding external code as statements or function

direct code implementation from within the block (code inlining). The inserted custom code is included directly in the production code. The inlined code is also used for MIL simulation (Type |)

Use Case:

"Suppose your target ECU is equipped with special hardware features, for example, a unit for PWM generation or a hardware timer that can be accessed by external C functions. To allow offline simulations, your controller model contains a rather complicated implementation of the hardware unit by basic blocks. In this case you do not want TargetLink to generate C code for the model of the hardware function, which is needed only for offline simulations. Instead, you want TargetLink to call your own existing C function in the generated code. You can achieve this behavior by embedding an external function."

Steps:

• a subsystem that contains a TargetLink Function block with its step function class property Storage set to

  extern.