【原】simulink.bus的定义和使用

1. Simulink.bus的定义

       BusDemo = Simulink.Bus;
       BusDemo.Description = '';
       BusDemo.DataScope = 'Exported';
       BusDemo.HeaderFile = '';
       BusDemo.Alignment = -1;
      
       busElement1 = Simulink.BusElement;
       busElement1.name = 'busElement1';
       busElement1.Complexity = 'real';
       busElement1.Dimensions = 1;
       busElement1.DataType = 'uint32';
       busElement1.Min = [];
       busElement1.Max = [];
       busElement1.DimensionsMode = 'Fixed';
       busElement1.SamplingMode = 'Sample based';
       busElement1.SampleTime = -1;
       busElement1.DocUnits = '';
       busElement1.Description = '';
      
       busElement2 = Simulink.BusElement;
       busElement2.name = 'busElement2';
       busElement2.Complexity = 'real';
       busElement2.Dimensions = 240;
       busElement2.DataType = 'uint8';
       busElement2.Min = [];
       busElement2.Max = [];
       busElement2.DimensionsMode = 'Fixed';
       busElement2.SamplingMode = 'Sample based';
       busElement2.SampleTime = -1;
       busElement2.DocUnits = '';
       busElement2.Description = '';
    
       BusDemo.Elements = [busElement1 busElement2];
       assignin( 'base', 'busDemo', BusDemo);

2. 在s-function（c语言）中，注册simulink.bus 并设置端口类型。
   

        nameBusStr = “busDemo”；

        DTypeId dataTypeIdReg;
        ssRegisterTypeFromNamedObject(
            S,
            nameBusStr,
            &dataTypeIdReg);
        if (dataTypeIdReg == INVALID_DTYPE_ID)
                return;
       /*mexPrintf("nameBusStr:  %s\n",nameBusStr);*/   
        ssSetOutputPortDataType(S, 1, dataTypeIdReg );

        ssSetBusObjectName(S, 1, (void *)nameBusStr);
        ssSetBusOutputAsStruct(S, 1, 1);