MATLAB XPC TARGET 4 - DEVICE DRIVERS User's Guide download pdf (Page 13)

Introduction

See...

For...

Developing S-Functions How to write MATLAB C-MEX S-functions (noninlined S-functions).

Note the following references in this guide:

• “S-Function Callback Methods — Alphabetical List” the Simulink

software invokes these methods w hen simulating a model with

S-functions. Real-Time Workshop use s the same methods in

generated real-time a pp l ications.

• “S-Function SimStruct Functions — Alphabetical List” Contains

detailed descriptions of the function s that access the fields of an

S-function’s simulation data structure (

SimStruct). S-function

callback methods use these functions to store and retrieve

information a bout an S-f u ncti on.

Real-Time Workshop

Target Language

Compiler

How to write target language compiler (TLC) files to inline S-function

drivers. This is an optional reference and depends on whether or not

youchoosetoinlineyourdriver.

Real-Ti

me Workshop

User’s G

uide

Overall description of Real-Time Workshop fundamentals, and

guidelines on understanding I/O boards and low-level programming

for drivers for those boards.

MathWorks Consulting

You can

alternatively contact the MathWorks Consulting Services Group

about

the fee-based creation of a driver for your board.

Source Code

You c

an examine the source code for existing xPC Target device drivers as a

refe

rence for your custom drivers. Refer to the follo wing directory:

matlabroot\toolbox\rtw\targets\xpc\target\build\xpcblocks

Note In this directory, you might notice that some drivers u se outdated xPC

Target driver functions. For the current functions to use, see “xPC Target

Exported Functions” on page 1-6.

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