BlinkUSB.ino
/*
* Send number to Serial
*/
int i = 0;
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin 13 as an output.
pinMode(13, OUTPUT);
Serial.begin(9600);
}
// the loop function runs over and over again forever
void loop() {
Serial.print(i);
i++;
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
Read last post to "Prepare jSSC - download and add library to NetBeans, and create project using jSSC library".
modify the java code, JavaFX_jssc_Uno.java
/*
* Example of using jSSC library to handle serial port
* Receive number from Arduino via USB/Serial and display on Label
*/
package javafx_jssc_uno;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import jssc.SerialPort;
import static jssc.SerialPort.MASK_RXCHAR;
import jssc.SerialPortEvent;
import jssc.SerialPortException;
import jssc.SerialPortList;
public class JavaFX_jssc_Uno extends Application {
SerialPort arduinoPort = null;
ObservableList<String> portList;
Label labelValue;
private void detectPort(){
portList = FXCollections.observableArrayList();
String[] serialPortNames = SerialPortList.getPortNames();
for(String name: serialPortNames){
System.out.println(name);
portList.add(name);
}
}
@Override
public void start(Stage primaryStage) {
labelValue = new Label();
detectPort();
final ComboBox comboBoxPorts = new ComboBox(portList);
comboBoxPorts.valueProperty()
.addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> observable,
String oldValue, String newValue) {
System.out.println(newValue);
disconnectArduino();
connectArduino(newValue);
}
});
VBox vBox = new VBox();
vBox.getChildren().addAll(
comboBoxPorts, labelValue);
StackPane root = new StackPane();
root.getChildren().add(vBox);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
public boolean connectArduino(String port){
System.out.println("connectArduino");
boolean success = false;
SerialPort serialPort = new SerialPort(port);
try {
serialPort.openPort();
serialPort.setParams(
SerialPort.BAUDRATE_9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
serialPort.setEventsMask(MASK_RXCHAR);
serialPort.addEventListener((SerialPortEvent serialPortEvent) -> {
if(serialPortEvent.isRXCHAR()){
try {
String st = serialPort.readString(serialPortEvent
.getEventValue());
System.out.println(st);
//Update label in ui thread
Platform.runLater(() -> {
labelValue.setText(st);
});
} catch (SerialPortException ex) {
Logger.getLogger(JavaFX_jssc_Uno.class.getName())
.log(Level.SEVERE, null, ex);
}
}
});
arduinoPort = serialPort;
success = true;
} catch (SerialPortException ex) {
Logger.getLogger(JavaFX_jssc_Uno.class.getName())
.log(Level.SEVERE, null, ex);
System.out.println("SerialPortException: " + ex.toString());
}
return success;
}
public void disconnectArduino(){
System.out.println("disconnectArduino()");
if(arduinoPort != null){
try {
arduinoPort.removeEventListener();
if(arduinoPort.isOpened()){
arduinoPort.closePort();
}
} catch (SerialPortException ex) {
Logger.getLogger(JavaFX_jssc_Uno.class.getName())
.log(Level.SEVERE, null, ex);
}
}
}
@Override
public void stop() throws Exception {
disconnectArduino();
super.stop();
}
public static void main(String[] args) {
launch(args);
}
}
Next:
- JavaFX + jSSC - read byte from Arduino Uno, read from Analog Input
