Input argument to the C Caller block.

Number of input arguments and their names are inferred through the selected function in your external C code. To receive data to a C Caller block, connect an input signal to the input ports.

Input label has the same name as your input argument unless changed by editing the Label column under Port Specification from the Block Dialog. If you rename the label to an input port, the C Caller block changes the name of the port.

For input variables, you can change the input scope to parameters or constants using the Scope column.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | fixed point | enumerated | bus

Output argument from the C Caller block.

Number of output arguments and their names are inferred through the selected function in your external C code. To send data from your C Caller block, connect a block to the output port of your C Caller block.

Output port label has the same name as your output argument unless you change it by editing the Label column under Port Specification from the Block Dialog. If you rename the label to an input port, the C Caller block changes the name of the port.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | enumerated | bus

Name of the function parsed for the C Caller block. For a list of available functions, see Available Functions.

Tunable: Yes

Programmatic Use

myFunctionName = get_param(gcb,'FunctionName')

myFunctionName =

    'mean_filter'

The Port specification table indicates the attributes of each input and output element for the selected block. These properties include Argument name, scope, input/output label, type and size of the input/output variables. Argument name, scope, type, and size are inferred from your source code. If the scope is an input, you can modify this variable to a parameter or a constant.

Name — Demonstrates the variable name inferred from your source code.

A bold argument name indicates that the port or parameter is a global argument.

Scope — Indicates the role of the variables from your source code. If the variable is an input argument in the C Caller block source code, you can change the scope type to a constant or a parameter. If the variable is an output argument in the source code, you cannot change the scope type.

Label — Labels the input or output variable for the Simulink model. You can change the labels using this table. If the scope is a parameter, enter the parameter name in this field. If the scope is a constant, enter the constant value.

Type — Indicates the data type coming from the ports.

Size — Indicates the size of the input and output data.

List of all available functions that can be mapped to a C Caller block.

The C Caller block in your model imports all functions in your external source code, and shows the function names next to the Function name on the block dialog. To select and use a function in your block, confirm that the function name appears in the Available Functions table. If you are missing one of the functions, reload the source code by clicking on the block dialog. To change the names of functions, modify your source code and click the Refresh button to reload.

Programmatic Use

allAvailableFunctions = get_param(gcb, 'AvailableFunctions')

allAvailableFunctions =

  1×1 cell array

    {'add'}