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Step-by-Step Example of Fortran and xPC Target
11-9
Creating a C-MEX Wrapper S-Function
This section assumes that you have compiled your Fortran code. See
“Compiling Fortran Files” on page 11-7.
Write the wrapper S-function for
sfun_atmos_sub.f. A wrapper S-function is
code that incorporates existing Fortran code into a Simulink S-Function block.
For details on writing such wrapper functions, refer to the writing S-Functions
Simulink documentation.
The wrapper S-function calls the Fortran subroutine
Atmos with the
appropriate calling convention:
atmos_. (Refer to “Creating Fortran
S-Functions” in the writing S-Functions documentation for further information
about calling conventions.) The wrapper S-function file for this example is
called
sfun_atmos.c.
1 Change directory to <MATLAB root>\simulink\src.
2 Copy the file sfun_atmos.c into your Fortran working directory, for
example,
xpc_fortran_test.
Your next task is to compile and link the wrapper S-function. See “Compiling
and Linking the Wrapper S-Function” on page 11-9.
Compiling and Linking the Wrapper S-Function
Create (compile and link) a DLL (C-MEX DLL) from the sfun_atmos.c file. Use
the
mex command with a C/C++ compiler such as Microsoft Visual C/C++
Version 6.0.
Before you start, copy the following run-time library files from the Fortran
compiler installer directory, such as
C:\Program Files\Microsoft Visual
Studio\DF98\lib
, into the working directory, xpc_fortran_test. Copying
these files simplifies the build process.
•
dfor.lib
• dformd.lib
• dfconsol.lib
• dfport.lib
This section assumes that you have created a C_MEX wrapper S-function. See
“Creating a C-MEX Wrapper S-Function” on page 11-9.
- User’s Guide 1
- How to Contact The MathWorks: 2
- Embedded Option 6
- Troubleshooting 10
- Function Reference 11
- Contents 12
- Target and Scope Objects 13
- 1 Target and Scope Objects 14
- Scope Objects 15
- Targets and Scopes in the 19
- MATLAB Interface 19
- Working with Target Objects 20
- Deleting Target Objects 21
- 2 Alternatively, you can type 22
- Working with Scope Objects 25
- 2 Alternatively, type 26
- Signals and Parameters 37
- 3 Signals and Parameters 38
- Monitoring Signals 39
- Signal Tracing 47
- Add Target Scope 49
- Add to Scopes 53
- Software Triggering Scopes 57
- Scope of Type Host 69
- Scope of Type Target 69
- Interrupted) or finishes 71
- Signal Logging 75
- Signal logging 75
- Enter key 81
- Parameter Tuning with MATLAB 83
- Simulation menu, click 87
- Connect to target 87
- Configure button 93
- Add to table 93
- Update Parameter button 95
- 4 Embedded Option 100
- 9 Boot the target PC 103
- *.rtb file 105
- Embedded Option Setup 107
- Creating a DOS System Disk 109
- Create BootDisk 111
- DOSLoader Target Setup 111
- Reset button on your target 113
- Stand-Alone Target Setup 115
- Software Environment 123
- 1 In the MATLAB window, type 124
- Explorer 125
- Command-Line Interface 128
- In the MATLAB window, type 129
- Using the Target PC 131
- C. In this case 132
- Target PC 133
- System: S0 has value 5.1851 134
- Working with Target PC 139
- Files and File Systems 139
- Introduction 140
- FTP and File System Objects 142
- Using xpctarget.ftp Objects 143
- Using xpctarget.fs Objects 147
- Graphical User Interfaces 155
- 8 Graphical User Interfaces 156
- Host PC Target PC 157
- To xPC Target Block 159
- Block Parameters 161
- Signal Properties 165
- Documentation tab 165
- Interface 169
- Web Browser Interface 170
- Ctrl+C by 172
- Ctrl+C is not used to 172
- Using the Main Pane 174
- Main pane 175
- Changing WWW Properties 177
- -1 or Inf 178
- 1, enter 180
- Interrupts Versus Polling 181
- 10 Interrupts Versus Polling 182
- Polling Mode 183
- Target Application 189
- Polling Mode Performance 193
- 11 xPC Target and Fortran 196
- Prerequisites 197
- Compiling Fortran Files 201
- Parameters 205
- 12 Troubleshooting 210
- Is the Target PC Halted? 211
- Create Bootdisk 219
- Advanced Troubleshooting 223
- Can Library parameter in 225
- PCI Slot parameter of 225
- Target PC Command-Line 235
- Interface Reference 235
- Target PC Commands 236
- Target Object Methods 237
- Scope Object Methods 239
- or move mouse 243
- 14 Function Reference 246
- Target Objects 247
- Functions — Categorical List 251
- 14addscope 253
- Syntax MATLAB command line 253
- Arguments 253
- MATLAB command line 258
- Purpose Remove target object 260
- function 262
- 14fc422mexcalcbits 265
- 14get (scope object) 272
- AutoRestart check box to 273
- Number of samples, then 273
- 14get (target object) 281
- 14getxpcenv 297
- Syntax MATLAB Command Line 297
- RAM size 298
- Target boot mode 304
- Purpose Reboot target PC 312
- 14set (scope object) 320
- Description 320
- 14set (target object) 329
- Simulation 331
- 14setxpcenv 334
- Interface” on page 5-6 342
- Target PC command line 345
- 14updatexpcenv 352
- 14xpcexplr 355
- 14xpctarget.fs 356
- 14xpctarget.ftp 358
- 14xpctarget.xpc 360
- MATLAB Command Line 364
- 14xpcwwwenable 365
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