get
R2026b描述
示例
此示例描述如何通过添加、修改和删除计算方法、特征、测量和查找表参数，以编程方式自定义 ASAP2 文件中的 ECU 描述。
使用函数从已构建的模型创建一个 ECU 描述对象，查找并过滤其内容，然后导出自定义 ASAP2 文件。
在此示例中，您执行下列操作：
构建模型并创建一个 ECU 描述对象
按属性查找和过滤计算方法
添加并修改自定义计算方法
添加并修改自定义特征和测量
添加带轴信息的查找表参数
导出自定义 ASAP2 文件
打开并构建模型
打开示例模型 ASAP2Demo 并从其生成代码。构建模型是创建 ECU 描述对象的一项前提条件。
open_system("ASAP2Demo");
slbuild("ASAP2Demo");### Searching for referenced models in model 'ASAP2Demo'. ### Total of 2 models to build. ### Starting serial code generation build. ### Starting model reference code generation target build for: ASAP2DemoModelRef ### Successfully updated the model reference code generation target for: ASAP2DemoModelRef ### Starting top model code generation target build 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 8.5322s Top model targets: Model Build Reason Status Build Duration ============================================================================================ ASAP2Demo Target (ASAP2Demo.c) did not exist. Code generated and compiled. 0h 0m 16.383s 2 of 2 models built (0 models already up to date) Build duration: 0h 0m 27.316s
创建并浏览 ECU 描述
为构建的模型创建 ECU 描述对象。使用 find 函数列出可用的计算方法。
descObj = coder.asap2.getEcuDescriptions("ASAP2Demo");Export duration: 0h 0m 0s 227ms
find(descObj, "CompuMethod")ans = 1×9 string
"CM_double" "CM_double_m_per_U0028_s_U005E_2_U0029" "CM_double_rpm" "CM_int16_rpm" "CM_int32" "CM_single" "CM_single_m_per_U0028_s_U005E_2_U0029" "CM_single_rpm" "CM_uint8"
过滤计算方法，仅获取使用 rpm 作为单位的计算方法。
find(descObj, "CompuMethod", Units="rpm")
ans = 1×3 string
"CM_double_rpm" "CM_int16_rpm" "CM_single_rpm"
添加自定义计算方法
创建一个具有线性转换类型的计算方法，并将其添加到 ECU 描述对象。
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(descObj, CompuMethod_1);
验证新添加的计算方法的属性。
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: [1×1 struct]
CustomData: ""
将转换类型更新为 TAB_VERB 并定义对应的 CompuVTabValues。使用 set 函数修改现有描述的属性。
set(descObj, "CompuMethod", "CompuMethod_1", ConversionType="TAB_VERB"); set(descObj, "CompuMethod", "CompuMethod_1", CompuVTabValues=struct("Literals", ["false" "true"], "Values", [0 1]));
验证修改后的字段。
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: [1×1 struct]
CustomData: ""
modifiedProp.CompuVTabValues
ans = struct with fields:
Literals: ["false" "true"]
Values: [0 1]
添加自定义特征
创建一个表示标定参数的特征，并将其添加到 ECU 描述对象。然后更新其 UpperLimit 属性。
param1 = coder.asap2.Characteristic; param1.Name = "Custom_parameter1"; param1.LongIdentifier = "longIdentifierParam"; param1.UpperLimit = 255; param1.LowerLimit = 0; add(descObj, param1); 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: [1×1 struct]
SymbolLink: [1×1 struct]
CustomData: ""
set(descObj, "Characteristic", "Custom_parameter1", UpperLimit=128)
添加自定义测量
创建一个表示信号的测量，并将其添加到 ECU 描述对象。然后更新其 CalibrationAccess 属性。
signal1 = coder.asap2.Measurement; signal1.Name = "Custom_signal1"; signal1.LongIdentifier = "longIdentifierSignal"; signal1.UpperLimit = 255; signal1.LowerLimit = 0; add(descObj, signal1); get(descObj, "Measurement", "Custom_signal1")
ans =
Measurement with properties:
Name: "Custom_signal1"
LongIdentifier: "longIdentifierSignal"
DataType: 'UBYTE'
EcuAddress: '0x0000'
CompuMethodName: ""
LowerLimit: 0
UpperLimit: 255
Raster: [1×1 struct]
EcuAddressComment: ""
EcuAddressExtension: []
CalibrationAccess: 'NoCalibration'
DisplayIdentifier: ""
Format: ""
BitMask: []
Dimensions: []
Export: 1
MaskData: [1×1 struct]
MaxRefresh: [1×1 struct]
SymbolLink: [1×1 struct]
CustomData: ""
set(descObj, "Measurement", "Custom_signal1", CalibrationAccess="Calibration")
添加查找表参数
创建一个类型为 MAP 且具有两个坐标轴的查找表参数。每个轴都需要名称、计算方法、最大轴点数以及轴类型。
lutParam = coder.asap2.Characteristic; lutParam.Name = "custom_lookup_table"; lutParam.Type = "MAP"; axisData = coder.asap2.AxisInfo; axisData(1).Name = "BP3"; axisData(2).Name = "Bp4"; axisData(1).CompuMethodName = "ASAP2Demo_CM_double"; axisData(2).CompuMethodName = "ASAP2Demo_CM_double"; axisData(1).MaxAxisPoints = "3"; axisData(2).MaxAxisPoints = "3"; axisData(1).AxisType = "STD_AXIS"; axisData(2).AxisType = "STD_AXIS"; lutParam.AxisInfo = axisData; add(descObj, lutParam)
导出自定义 ASAP2 文件
使用更新后的 ECU 描述对象导出 ASAP2 文件。验证生成的文件包含自定义计算方法、特征、测量和查找表参数。
coder.asap2.export("ASAP2Demo", CustomEcuDescriptions=descObj);删除自定义描述
从 ECU 描述对象中删除自定义描述。
delete(descObj, "CompuMethod", "CompuMethod_1"); delete(descObj, "Characteristic", "Custom_parameter1"); delete(descObj, "Measurement", "Custom_signal1");
输入参数
版本历史记录
在 R2022b 中推出
另请参阅
add | set | find | delete | coder.asap2.getEcuDescriptions
