生成代码接口

使用 C API 接口和代码描述符接口在生成的代码和外部应用程序代码之间交换数据

一些应用程序必须在生成的代码和外部应用程序代码之间交换数据。使用 MATLAB 代码描述符 API 获取有关生成代码的元数据。使用 C API 在运行时与生成的代码对接，并在目标平台上执行模型代码期间监控并调节模型元素。

Sample Target Environment Service Implementations of Data Communication Methods 显示目标环境服务如何实现三种类型的数据通信方法的示例：直接访问、执行期外和执行期间。

类

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代码描述符接口

`coder.codedescriptor.CodeDescriptor`	返回有关生成代码的信息
`coder.descriptor.DataInterface`	Return information about different types of data interfaces
`coder.descriptor.FunctionInterface`	Return information about entry-point functions
`coder.descriptor.LookupTableDataInterface`	Return information about Lookup Table blocks that have tunable parameters
`coder.descriptor.BreakpointDataInterface`	Return information about tunable breakpoint set data for a lookup table that has tunable parameters
`coder.descriptor.DataTransferElement`	Return information about data transfer signal (自 R2022b 起)
`coder.descriptor.DataTransferFunction`	Return information about function prototypes for data transfer service interfaces (自 R2022b 起)
`coder.descriptor.DataTransferServiceInterface`	Return information about data transfer service interface (自 R2022b 起)
`coder.descriptor.MeasurementServiceInterface`	Return information about measurement service interfaces (自 R2023a 起)
`coder.descriptor.ParameterTuningServiceInterface`	Return information about parameter tuning service interfaces (自 R2023a 起)
`coder.descriptor.SenderReceiverServiceInterface`	Return information about sender and receiver service interfaces (自 R2022b 起)
`coder.descriptor.ServiceFunctions`	Return list of service functions that entry-point function calls (自 R2022b 起)
`coder.descriptor.ServiceInterface`	Return service interface information required to generate service functions (自 R2022b 起)
`coder.descriptor.SignalOfInterest`	Return information about signals of interest in generated code (自 R2025a 起)
`coder.descriptor.TimerFunction`	Retrieve information about function prototypes for timer services (自 R2022b 起)
`coder.descriptor.TimerServiceInterface`	Return information about timer service interface (自 R2022b 起)

代码描述符数据实现

`coder.descriptor.DataImplementation`	Return information about implementation of data in generated code (自 R2025a 起)
`coder.descriptor.TypedRegion`	Return information about implementation of typed data in generated code (自 R2025a 起)

代码描述符类型

`coder.descriptor.types.Aggregate`	Return information about variable of aggregate type (自 R2024a 起)
`coder.descriptor.types.AggregateElement`	Return information about element of aggregate type (自 R2024a 起)
`coder.descriptor.types.Argument`	Return information about argument associated with function or method in generated code (自 R2024a 起)
`coder.descriptor.types.Bool`	Return information about variable of Boolean type (自 R2024a 起)
`coder.descriptor.types.Char`	Return information about variable of character type (自 R2024a 起)
`coder.descriptor.types.Complex`	Return information about variable of complex type (自 R2024a 起)
`coder.descriptor.types.Double`	Return information about variable of double-precision type (自 R2024a 起)
`coder.descriptor.types.Enum`	Return information about variable of enum type (自 R2024b 起)
`coder.descriptor.types.Fixed`	Return information about variable of fixed-point type (自 R2024a 起)
`coder.descriptor.types.Half`	Return information about variable of half-precision type (自 R2024a 起)
`coder.descriptor.types.Integer`	Return information about variable of integer type (自 R2024a 起)
`coder.descriptor.types.Matrix`	Return information about variable of matrix type (自 R2024a 起)
`coder.descriptor.types.Numeric`	Return information about variable of numeric type (自 R2024a 起)
`coder.descriptor.types.Pointer`	Return information about variable of pointer type (自 R2024a 起)
`coder.descriptor.types.Prototype`	Return information about function prototype in generated code (自 R2024a 起)
`coder.descriptor.types.Reference`	Return information about variable of reference type (自 R2024a 起)
`coder.descriptor.types.Scalar`	Return information about variable of scalar type (自 R2024a 起)
`coder.descriptor.types.Single`	Return information about variable of single-precision type (自 R2024a 起)
`coder.descriptor.types.Struct`	Return information about variable of `struct` type (自 R2024a 起)
`coder.descriptor.types.Type`	Return information about data type of modeling element or corresponding variable in generated code (自 R2024a 起)
`coder.descriptor.types.Union`	Return information about variable of `union` type (自 R2024a 起)
`coder.descriptor.types.Void`	Represent base type of void pointer (自 R2024a 起)

函数

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代码描述符接口

getCodeDescriptor Create coder.codedescriptor.CodeDescriptor object for model

主题

配置生成代码中的数据类型

Parameter Data Types in the Generated Code
Optimize the generated code and generate code for specific processors by controlling the data types that store parameter data in computer memory.
在生成的代码中创建可调标定参数
在生成的代码中创建可在快速原型和标定过程中访问的可调参数数据。

C API 接口

Get Started with C API

Learn the principles of using C API to interact with the generated model code.
- 步骤 1: Explore Measurable and Tunable Model Elements
- 步骤 2: Configure Model to Add C API Signals in Code Generation
- 步骤 3: Write Code that Interacts with C API Code
Configure Model to Generate C API Code

Learn how to configure your model to include different types of C API elements in the generated code.
Write External Code to Access Generated C API Code

Learn how to write external code that can access generated C API code elements.
Use C API to Monitor and Tune Generated Model Code

Learn the details about how to use the C API to monitor and tune model elements.
- 步骤 1: Explore Measurable and Tunable Model Elements
- 步骤 2: Configure Model to Add C API Signals in Code Generation
- 步骤 3: Write Code to Interact with Generated C API Signal Code
- 步骤 4: Interact with C API Signal Code Throughout Execution
- 步骤 5: Write Code to Interact with Generated C API Signal and Parameter Code
- 步骤 6: Use Custom Monitor to Measure and Tune Model Elements in Real Time

代码描述符接口

Get Code Description of Generated Code
Obtain metadata about the generated code.
Get Generated Type and Name of Inport Structures
Obtain metadata about the inport structures in generated code.
Get Metadata About Service Interface
Obtain metadata about the generated service interface by using the code descriptor programming interface.
Get Metadata About Test Points and Logged Signals in Generated Code
Retrieve metadata for test points and logged signals in generated code.