MATLAB REAL-TIME WORKSHOP 7 - TARGET LANGUAGE COMPILER Guida Utente Scaricare il pdf (Pagina 268)

10 Targeting Custom Hardware

10-10

Figure 10-1: Format of a Device Driver S-Function

#define S_FUNCTION_NAME filename

Define a name for the entry point function:

Include the definition of the Simulink

data structure (SimStruct):

#include "simstruc.h"

Initialize the size information in the

mdlInitializeSizes(S)

Readfromorwritetohardware(depending

SimStruct:

mdlOutputs(y,x,u,S)

Obtain dialog box parameters and

mdlInitializeConditions(x0,S)

Include code generator header file:

#include "cg_sfun.h"

Set the block’s sample time to the sample

time specified in the dialog box:

mdlInitializeSampleTimes(S)

Device Driver

Clean up after completion of program:

mdlTerminate(S)

on whether the block is for input or output):

S-Function

initialize the board:

Include MEX header file:

#include "simulink.c"

Define the S-function as level 2:

#define S_FUNCTION_LEVEL 2

Include the MEX header file:

#ifdef MATLAB_MEX_FILE

#include "mex.h"

#endif

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