User`s guide

7 Models with Multiple Sample Rates

7-4

Figure 7-1: Real-Time Program Execution

This chapter focuses on when and how the run-time interface executes your

model. See “Program Execution” on page 6-15 for a description of what happens

during model execution.

Collect Data

Real-Time Clock

semTake

semGive

Interrupt Service

Routine

Model Execution

Task

Context

Switch

Hardware

Interrupt

Collect Data

Save Context

Interrupt Service

Routine

Real-Time Clock

Hardware

Interrupt

Restore Context

Program execution using a real-time

Program execution using an

Execute Model

interrupt service routine (bare-

board, with no real-time operating

system). See the

grt target for an

example.

operating system primitives. See the

Tornado target for an example.