Stimulate Root Inport by Using MATLAB Language

This example shows how to stimulate root inports in a model by using the Stimulation object and related functions:

• start

• stop

• getStatus

• reloadData

• pause

Create Target Object and Connect

Create a Target object for the default target computer and connect to the target computer. In the Command Window, type:

tg = slrealtime;
connect(tg);

Open Model and Map Inport to Wave Data

Open model slrt_ex_osc_inport. Save the model to a working folder. Map the inport to use square wave data. For inport In1, interpolated is off.

model = ('slrt_ex_osc_inport');
open_system(model);
load('slrt_ex_inport_square.mat');
waveform = square;
set_param(model,'ExternalInput','waveform');
set_param(model,'LoadExternalInput','on');
set_param(model,'StopTime','Inf');
modelSTF = getSTFName(tg);
set_param(model,"SystemTargetFile",modelSTF);

Build Model and Download Real-Time Application

Build, download, and execute the real-time application.

evalc('slbuild(model)');
load(tg,model);

Stimulate Root Inport Data

Start root inport stimulation of inports 1. Open Scope block and observe results.

start(tg.Stimulation,[1]);
start(tg);

Pause root inport stimulation of inport 1.

pause(tg.Stimulation,[1]);

Stop and start the stimulation of inport 1.

stop(tg.Stimulation,[1]);
start(tg.Stimulation,[1]);

Check the status of stimulation of the inports.

getStatus(tg.Stimulation,'all');

Create a time-series object to load data to an inport.

sampleTime = 0.1;
endTime = 10;
numberOfSamples = endTime * 1/sampleTime + 1;
timeVector = (0:numberOfSamples) * sampleTime;
u = timeseries(timeVector*10,timeVector);

Object u is created for 10 seconds. Load it to the inport 1. Stimulation of an inport should be stopped before loading data.

stop(tg.Stimulation,[1]);
reloadData(tg.Stimulation,[1],u);

Stop real-time application and close model.

stop(tg);
bdclose(model);