coder.asap2.Measurement
Description
Create a measurement object to define a signal and export it to an ASAP2 file.
Creation
creates a
measurement object. You can use the object to define a signal and export it to an ASAP2
file.signal
= coder.asap2.Measurement
Properties
Name
— Variable name
character vector | string scalar
Specify a name for the custom variable.
Example:
"CustomVariable_1"
LongIdentifier
— Variable description
character vector | string scalar
Specify comments and description of the variable.
Example:
"Description of the variable"
DataType
— Variable data type
character vector | string scalar
Specify a data type for the variable.
Example:
UBYTE
EcuAddress
— Address of the variable
hexadecimal value
Specify the address of the custom variable.
Example:
0x1234
CompuMethodName
— Compu method name
string scalar | character vector
Specify a name for the conversion method of the custom variable.
Example:
custom_conversionmethod
LowerLimit
— Minimum value
parameter value
Specify the minimum possible value for the custom variable.
Example:
0
UpperLimit
— Maximum value
parameter value
Specify the maximum possible value for the custom variable.
Example:
65535
EcuAddressComment
— Address replacement
string scalar | character vector
Specify symbols for address replacement.
Example:
"/* @ECU_Address@MEASUREMENT_1@ */"
EcuAddressExtension
— Address information
integer
Specify additional address information.
Example:
1
CalibrationAccess
— Access type
Calibration
| NoCalibration
| NotAccessible
| ReadOnly
| ReadWrite
Specify the calibration access type for the custom variable.
Example:
ReadOnly
DisplayIdentifier
— Display name
string scalar | character vector
Specify a display name for the variable to appear on calibration tool.
Example:
CustomVariable_1
Format
— Display format
string scalar | character vector
Specify a display format for the variable to appear on calibration tool.
Example:
%3.4
BitMask
— Bit handle
hexadecimal value
Specify to handle the single bits.
Example:
0x3a
Dimensions
— Dimensions for array
numeric value
Specify the dimensions for an array data type.
Example:
2
Export
— Export variable
true | false
Specify true
to export the variable and false to not export the
variable to ASAP2 file.
Example:
false
SymbolLink
— Symbol name and offset
struct with name and value
Specify reference to symbol name within a linker map file.
Example:
struct('SymbolName','p1_SymbolName','Offset',1)
MaskData
— Mask data
struct
Perform operation on masked out value. This property can be used with the
BitMask
.
Example: struct('Shift',3,'SignExtend',1)
MaxRefresh
— Maximum refresh value
parameter value
Specify the maximum refresh rate.
Example:
struct('ScalingUnit',ScalingUnits.ONE_MILLI_SEC,'Rate',100)
CustomData
— Additional description
character vector | string scalar
Specify any additional description that needs to be populated in the measurement.
Example:
"additional information"
Examples
Customize an ASAP2 File
Add, update, filter, find, and remove ECU descriptions in an ASAP2 file.
Open and Build Example Model
Open the example model ASAP2Demo
open_system("ASAP2Demo");
Build the model.
slbuild("ASAP2Demo");
### Searching for referenced models in model 'ASAP2Demo'. ### Found 1 model reference targets to update. ### Starting serial model reference code generation build. ### Successfully updated the model reference code generation target for: ASAP2DemoModelRef ### Starting build procedure for: ASAP2Demo ### Successful completion of build procedure for: ASAP2Demo Build Summary Model reference code generation targets: Model Build Reason Status Build Duration ============================================================================================================ ASAP2DemoModelRef Target (ASAP2DemoModelRef.c) did not exist. Code generated and compiled. 0h 0m 8.5574s Top model targets: Model Build Reason Status Build Duration ============================================================================================================ ASAP2Demo Information cache folder or artifacts were missing. Code generated and compiled. 0h 0m 14.207s 2 of 2 models built (0 models already up to date) Build duration: 0h 0m 24.52s
Create the ECU description object for the model.
descObj = coder.asap2.getEcuDescriptions("ASAP2Demo");
Get the list of available computation methods in the description object.
find(descObj,"CompuMethod")
ans = 1x10 string
"ASAP2DemoModelRef_CM_double" "ASAP2DemoModelRef_CM_int16_rpm" "ASAP2Demo_CM_double" "ASAP2Demo_CM_double_m_per__s_2_" "ASAP2Demo_CM_double_rpm" "ASAP2Demo_CM_int32" "ASAP2Demo_CM_single" "ASAP2Demo_CM_single_m_per__s_2_" "ASAP2Demo_CM_single_rpm" "ASAP2Demo_CM_uint8"
Filter the computation methods and get a list of computation methods that use rpm as the unit.
find(descObj,"CompuMethod",Units='rpm')
ans = 1x3 string
"ASAP2DemoModelRef_CM_int16_rpm" "ASAP2Demo_CM_double_rpm" "ASAP2Demo_CM_single_rpm"
Create and Add Custom Computation Method
To add a new computation method to the ASAP2 file, create a custom computation method.
CompuMethod_1 = coder.asap2.CompuMethod; CompuMethod_1.Name = 'CompuMethod_1'; CompuMethod_1.ConversionType = 'LINEAR'; CompuMethod_1.Coefficients = [2 3]; CompuMethod_1.LongIdentifier = 'longIdentifierTest'; CompuMethod_1.Format = '%2.3'; CompuMethod_1.Units = 's';
Add the custom computation method to the ECU description object.
add(descObj,CompuMethod_1);
Get the properties of the newly added computation method.
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] CustomData: ""
To modify a property of the computation method, use set function. Update the ConversionType field of the computation method to TAB_VERB and define the CompuVTabValues.
set(descObj,"CompuMethod","CompuMethod_1",ConversionType="TAB_VERB"); set(descObj,"CompuMethod","CompuMethod_1",CompuVTabValues = struct('Literals',["false" "true"],'Values',[0 1]));
Get the properties to see the modified fields.
modifiedprop = get(descObj,"CompuMethod","CompuMethod_1")
modifiedprop = CompuMethod with properties: Name: 'CompuMethod_1' LongIdentifier: 'longIdentifierTest' Format: '%2.3' Units: 's' Coefficients: [2 3] ConversionType: "TAB_VERB" CompuVTabValues: [1x1 struct] CustomData: ""
modifiedprop.CompuVTabValues
ans = struct with fields:
Literals: ["false" "true"]
Values: [0 1]
Generate the ASAP2 file using the updated ECU description object and verify that the ASAP2 file contains the computation method CompuMethod_1.
coder.asap2.export("ASAP2Demo",CustomEcuDescriptions=descObj);
Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "ASAP2Demo_DW.ASAP2DemoModelRef_InstanceData"
Delete Computation Method
Remove the newly added computation method from the description object.
delete(descObj,"CompuMethod","CompuMethod_1");
Create and Add Custom Characteristic
To add a new characteristic to the ASAP2 file, create a custom characteristic.
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.
add(descObj,Parameter_1);
Get the properties of the newly added characteristic.
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 MaxRefresh: [1x1 struct] SymbolLink: [1x1 struct] CustomData: ""
To modify a property of the characteristic, use set function. Update the UpperLimit field of the characteristic.
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 Custom_parameter1.
coder.asap2.export("ASAP2Demo",CustomEcuDescriptions=descObj);
Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "ASAP2Demo_DW.ASAP2DemoModelRef_InstanceData"
Remove the newly added characteristic from the description object.
delete(descObj,"Characteristic","Custom_parameter1");
Create and Add Custom Measurement
To add a new measurement to the ASAP2 file, create a custom measurement.
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.
add(descObj,Signal_1);
Get the properties of the newly added measurement.
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 MaskData: [1x1 struct] MaxRefresh: [1x1 struct] SymbolLink: [1x1 struct] CustomData: ""
To modify a property of the measurement, use set function. Update the CalibrationAccess field of the measurement.
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("ASAP2Demo",CustomEcuDescriptions=descObj);
Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "ASAP2Demo_DW.ASAP2DemoModelRef_InstanceData"
Remove the newly added measurement from the description object.
delete(descObj,"Measurement","Custom_signal1");
Create and Add Lookup Table Parameter
Add a lookup table parameter.
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 = 'ASAP2Demo_CM_double'; axis_data(2).CompuMethodName = 'ASAP2Demo_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 custom_lookup_table.
coder.asap2.export("ASAP2Demo",CustomEcuDescriptions=descObj);
Following Characteristics or Measurements with unsupported data types are not exported in ASAP2 file. "ASAP2Demo_DW.ASAP2DemoModelRef_InstanceData"
Version History
Introduced in R2022b
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