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find

Filter and get ECU description names

    Description

    example

    find(descObj,category) returns the available ASAP2 element names from the specified category.

    example

    find(descObj,category,property=value) filters and returns the available ASAP2 element names from the specified category with the specified property set to value.

    Examples

    collapse all

    This example shows how to add, update, filter, find, and remove ECU descriptions in an ASAP2 file.

    Open and build the example model

    Open the example model rtwdemo_asap2

    open_system("rtwdemo_asap2");

    rtwdemo_asap2.png

    Build the model.

    rtwbuild("rtwdemo_asap2");
    ### Starting serial model reference code generation build.
    ### Successfully updated the model reference code generation target for: rtwdemo_asap2_mdlref
    ### Starting build procedure for: rtwdemo_asap2
    ### Successful completion of build procedure for: rtwdemo_asap2
    
    Build Summary
    
    Code generation targets built:
    
    Model                 Action                        Rebuild Reason                          
    ============================================================================================
    rtwdemo_asap2_mdlref  Code generated and compiled.  rtwdemo_asap2_mdlref.c does not exist.  
    
    Top model targets built:
    
    Model          Action                        Rebuild Reason                                    
    ===============================================================================================
    rtwdemo_asap2  Code generated and compiled.  Code generation information file does not exist.  
    
    2 of 2 models built (0 models already up to date)
    Build duration: 0h 0m 26.866s
    

    Create the ECU description object for the model.

    descObj=coder.asap2.getEcuDescriptions("rtwdemo_asap2");

    Get the list of available compu methods in the description object using the command:

    find(descObj,"CompuMethod")
    ans = 1x10 string
      Columns 1 through 3
    
        "rtwdemo_asap2_CM..."    "rtwdemo_asap2_CM..."    "rtwdemo_asap2_CM..."
    
      Columns 4 through 6
    
        "rtwdemo_asap2_CM..."    "rtwdemo_asap2_CM..."    "rtwdemo_asap2_CM..."
    
      Columns 7 through 9
    
        "rtwdemo_asap2_CM..."    "rtwdemo_asap2_CM..."    "rtwdemo_asap2_md..."
    
      Column 10
    
        "rtwdemo_asap2_md..."
    
    

    Filter the compu methods and get the list of compu methods with units as "rpm".

    find(descObj,"CompuMethod",Units='rpm')
    ans = 1x3 string
        "rtwdemo_asap2_CM_..."    "rtwdemo_asap2_CM_..."    "rtwdemo_asap2_mdl..."
    
    

    Create and Add a Custom Compu Method

    To add a new compu method to the ASAP2 file, create a custom compu method using the commands:

    CompuMethod_CM1 = coder.asap2.CompuMethod;
    CompuMethod_CM1.Name = 'CompuMethod_1';
    CompuMethod_CM1.ConversionType = 'LINEAR';
    CompuMethod_CM1.Coefficients = [2 3];
    CompuMethod_CM1.LongIdentifier = 'longIdentifierTest';
    CompuMethod_CM1.Format = '%2.3';
    CompuMethod_CM1.Units = 's';

    Add the custom compu method to the ECU description object using the command:

    add(descObj,CompuMethod_CM1);

    Get the properties of the newly added compu method using the command:

    get(descObj,"CompuMethod","CompuMethod_1")
    ans = 
      CompuMethod with properties:
    
                   Name: 'CompuMethod_1'
         LongIdentifier: 'longIdentifierTest'
                 Format: '%2.3'
                  Units: 's'
           Coefficients: [2 3]
         ConversionType: 'LINEAR'
        CompuVTabValues: [1x1 struct]
    
    

    To modify any property of the compu method, use set function. Update the "LongIdentifier" field of the compu method using the command:

    set(descObj,"CompuMethod","CompuMethod_1",LongIdentifier="longIdentifierCM1")

    Generate the ASAP2 file using the updated ECU description object and verify that the ASAP2 file contains the compu method with name "CompuMethod_1".

    coder.asap2.export("rtwdemo_asap2",CustomEcuDescriptions=descObj);
    Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "rtwdemo_asap2_DW.rtwdemo_asap2_mdlref_InstanceDa"
    

    Delete a Compu Method

    Remove the newly added compu method from the description object using the command:

    delete(descObj,"CompuMethod","CompuMethod_1");

    Create and Add Custom Characteristic

    To add a new characteristic to the ASAP2 file, create a custom characteristic using the commands:

    Parameter_1 = coder.asap2.Characteristic;
    Parameter_1.Name = 'Custom_parameter1';
    Parameter_1.LongIdentifier = 'longIdentifierParam';
    Parameter_1.UpperLimit = 255;
    Parameter_1.LowerLimit = 0;

    Add the custom characteristic to the ECU description object using the command:

    add(descObj,Parameter_1);

    Get the properties of the newly added characteristic using the command:

    get(descObj,"Characteristic","Custom_parameter1")
    ans = 
      Characteristic with properties:
    
                       Name: 'Custom_parameter1'
             LongIdentifier: 'longIdentifierParam'
                       Type: 'VALUE'
                 EcuAddress: '0x0000'
            CompuMethodName: 'NO_COMPU_METHOD'
                 LowerLimit: 0
                 UpperLimit: 255
          EcuAddressComment: ""
        EcuAddressExtension: []
          CalibrationAccess: 'Calibration'
          DisplayIdentifier: ""
                     Format: ""
                    BitMask: []
                   AxisInfo: []
               RecordLayout: ""
                 Dimensions: []
                     Export: 1
                 SymbolLink: [1x1 struct]
    
    

    To modify any property of the characteristic, use set function. Update the "UpperLimit" field of the characteristic using the command:

    set(descObj,"Characteristic","Custom_parameter1",UpperLimit=128)

    Generate the ASAP2 file using the updated ECU description object and verify that the ASAP2 file contains the characteristic with name "Custom_parameter1".

    coder.asap2.export("rtwdemo_asap2",CustomEcuDescriptions=descObj);
    Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "rtwdemo_asap2_DW.rtwdemo_asap2_mdlref_InstanceDa"
    

    Remove the newly added characteristic from the description object using the command:

    delete(descObj,"Characteristic","Custom_parameter1");

    Create and Add Custom Measurement

    To add a new measurement to the ASAP2 file, create a custom measurement using the commands:

    Signal_1 = coder.asap2.Measurement;
    Signal_1.Name = 'Custom_signal1';
    Signal_1.LongIdentifier = 'longIdentifierSignal';
    Signal_1.UpperLimit = 255;
    Signal_1.LowerLimit = 0;

    Add the custom measurement to the ECU description object using the command:

    add(descObj,Signal_1);

    Get the properties of the newly added measurement using the command:

    get(descObj,"Measurement","Custom_signal1")
    ans = 
      Measurement with properties:
    
                       Name: 'Custom_signal1'
             LongIdentifier: 'longIdentifierSignal'
                   DataType: 'UBYTE'
                 EcuAddress: '0x0000'
            CompuMethodName: ""
                 LowerLimit: 0
                 UpperLimit: 255
                     Raster: [1x1 struct]
          EcuAddressComment: ""
        EcuAddressExtension: []
          CalibrationAccess: 'NoCalibration'
          DisplayIdentifier: ""
                     Format: ""
                    BitMask: []
                 Dimensions: []
                     Export: 1
                 SymbolLink: [1x1 struct]
    
    

    To modify any property of the measurement, use set function. Update the "CalibrationAccess" field of the measurement using the command:

    set(descObj,"Measurement","Custom_signal1",CalibrationAccess='Calibration')

    Generate the ASAP2 file using the updated ECU description object and verify that the ASAP2 file contains the measurement with name "Custom_signal1".

    coder.asap2.export("rtwdemo_asap2",CustomEcuDescriptions=descObj);
    Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "rtwdemo_asap2_DW.rtwdemo_asap2_mdlref_InstanceDa"
    

    Remove the newly added measurement from the description object using the command:

    delete(descObj,"Measurement","Custom_signal1");

    Create and Add a Lookup Table Parameter

    To add a lookup table parameter, create a parameter using the commands:

    LUT_Parameter = coder.asap2.Characteristic;
    LUT_Parameter.Name = "custom_lookup_table";
    LUT_Parameter.Type = "MAP";

    Create and add axis information to the parameter.

    axis_data = coder.asap2.AxisInfo;
    axis_data(1).Name = 'BP3';
    axis_data(2).Name = 'Bp4';
    axis_data(1).CompuMethodName = 'rtwdemo_asap2_CM_double';
    axis_data(2).CompuMethodName = 'rtwdemo_asap2_CM_double';
    axis_data(1).MaxAxisPoints = '3';
    axis_data(2).MaxAxisPoints = '3';
    axis_data(1).AxisType = 'STD_AXIS';
    axis_data(2).AxisType = 'STD_AXIS';
    LUT_Parameter.AxisInfo = axis_data;

    Add the lookup table parameter to the description object.

    add(descObj,LUT_Parameter)

    Generate the ASAP2 file using the updated ECU description object and verify that the ASAP2 file contains the lookup table parameter with name "custom_lookup_table".

    coder.asap2.export("rtwdemo_asap2",CustomEcuDescriptions=descObj);
    Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "rtwdemo_asap2_DW.rtwdemo_asap2_mdlref_InstanceDa"
    

    Input Arguments

    collapse all

    Information object created by using the coder.asap2.getEcuDescriptions function containing the ASAP2 properties of a given model.

    Example: descObj = coder.asap2.getEcuDescriptions(<modelName>)

    Specify the category available in the information object to fetch the available ECU description names.

    Example: Characteristic

    Example: RecordLayout

    Specify a property and value to filter the list of available ECU description names in the category.

    Example: Units = 'rpm'

    Version History

    Introduced in R2022b