MATLAB XPC TARGET 4 - DEVICE DRIVERS Guide de l'utilisateur télécharger pdf (Page 57)

Adding Interrupt Support

4 Copy the file sample_int.m toauniquefilenameinthefollowingdirectory:

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

xpcblocks\thirdpartydrivers

For example:

your_company_name_int.m

The xPC Target software s earches in this directory for file names that end

with

_int.m and looks for board interrupt descriptions.

5 Open and edit the following file:

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

xpcblocks\thirdpartydrivers\

your_company_name_int.m

Addtothisfileaboard structure for each xPC Target supported board for

which interrupt functions have been written. See “Filling in the Driver

board Structure” on page 5-10 for a description o f how to fill in a board

structure.

6 Save and close the file.

7 At the MATLAB Command Window, type:

rehash toolbox

8 Restart the MATLAB interface to update the Async IRQ Source block and

Configuration Parameters dialogs.

Guidelines for Creating Interrupt Functions

xPC Target interrupt functions have predefined purposes and typically follow

a particular order. This section describes the guidelines on creating interrupt

functions. See “Hook Function Prototypes — Alphabetical List” on page 5-15

for the prototypes for these functions.

To prepare for the creatio n of the hook file, examine the existing xPC Target

hook files (

matlabroot\toolbox\rtw\targets\xpc\target\build\src) and

copy and modify one that is the same board type, PCI or ISA, as the board for

which you are creating a custom driver. For ex ample,

xpc6804hooks.c is for

an ISA board. Place your new file in

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MATLAB XPC TARGET 4 - DEVICE DRIVERS Guide de l'utilisateur Page 57