simulink仿真 - simulink

/* File : sfun_fcncall.c * Abstract: * * Example of an S-function which is configured to execute "function-call" * subsystems on the 1st and 2nd elements of the 1st output port. Note that * function-calls can be issued from the 1st output port only. * * For more details about S-functions, see * * Copyright 1990-2013 The MathWorks, Inc. */ #define S_FUNCTION_NAME sfun_fcncall #define S_FUNCTION_LEVEL 2 #include "simstruc.h" static void mdlInitializeSizes(SimStruct *S) { ssSetNumSFcnParams(S, 0); /* Number of expected parameters */ if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S)) { return; /* Parameter mismatch will be reported by Simulink */ } ssSetNumContStates(S, 0); ssSetNumDiscStates(S, 0); if (!ssSetNumInputPorts(S, 1)) return; ssSetInputPortWidth(S, 0, 1); ssSetInputPortDirectFeedThrough(S, 0, 1); if (!ssSetNumOutputPorts(S,1)) return; ssSetOutputPortWidth(S, 0, 2); /* All output elements are function-call, so we can set the data type of the * entire port to be function-call. */ ssSetOutputPortDataType(S, 0, SS_FCN_CALL); /* specify the sim state compliance to be same as a built-in block */ ssSetSimStateCompliance(S, USE_DEFAULT_SIM_STATE); ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE); } static void mdlInitializeSampleTimes(SimStruct *S) { ssSetSampleTime(S, 0, 0.1); ssSetOffsetTime(S, 0, 0.0); ssSetCallSystemOutput(S,0); /* call on first element */ ssSetCallSystemOutput(S,1); /* call on second element */ ssSetModelReferenceSampleTimeDefaultInheritance(S); } static void mdlOutputs(SimStruct *S, int_T tid) { real_T *x = ssGetRealDiscStates(S); InputRealPtrsType uPtrs = ssGetInputPortRealSignalPtrs(S,0); real_T *y = ssGetOutputPortRealSignal(S,1); /* * ssCallSystemWithTid is used to execute a function-call subsystem. The * 2nd argument is the element of the 1st output port index which * connected to the function-call subsystem. Function-call subsystems * can be driven by the first output port of s-function blocks. */ UNUSED_ARG(tid); /* not used in single tasking mode */ if (((int)*uPtrs[0]) % 2 == 1) { if (!ssCallSystemWithTid(S,0,tid)) { /* Error occurred which will be reported by Simulink */ return; } } else { if (!ssCallSystemWithTid(S,1,tid)) { /* Error occurred which will be reported by Simulink */ return; } } } static void mdlTerminate(SimStruct *S) { } #ifdef MATLAB_MEX_FILE /* Is this file being compiled as a MEX-file? */ #include "simulink.c" /* MEX-file interface mechanism */ #else #include "cg_sfun.h" /* Code generation registration function */ #endif