User`s guide

Adding Interrupt Support

In this section...

“Introduction” on page 5-7

“Guidelines for Creating Interrupt Functions” on page 5-9

“Filling in the Drive r board Structure” on page 5-10

Introduction

To add interrupt handling for a custom driver, you must create

• A des criptor file to connect a board type to the functions needed to start,

handle, and stop interrupts

• A C file to implement these functions

Include the following functions. See “Hook Function Prototypes —

Alphabetical List” on page 5-1 5 for the prototyp e details.

Functio

Descrip

tion

PreHook

Runs just before either a function-call subsystem

or entire model is called. Program this function to

acknowledge the interrupt and cause the board to

stop issuing the interrupt signal.

PostHook

Runs after return from function call on interrupt,

and before model execution. It is typically not used.

5-7