I'm having issues reading the actual double values from my arduino Serial.println() in my java app. I've tried following the usage examples found here but get what I guess is a hex-value. The serial monitor within the arduino program is displaying the correct values.
This is the code: I'm fairly new to this and would appreciate any comments regarding style/problems/inefficiencies within my code!
import com.fazecast.jSerialComm.*;
import java.util.*;
import java.io.*;
public class PortRead
{
public static SerialPort userPort;
static InputStream in;
public static void main(String args[])
{
Scanner input = new Scanner(System.in);
/*
* This returns an array of commport addresses, not useful for the client
* but useful for iterating through to get an actual list of com parts available
*/
SerialPort ports[] = SerialPort.getCommPorts();
int i = 1;
//User port selection
System.out.println("COM Ports available on machine");
for(SerialPort port : ports) //iterator to pass through port array
{
System.out.println(i++ + ": " + port.getSystemPortName()); //print windows com ports
}
System.out.println("Please select COM PORT: 'COM#'");
SerialPort userPort = SerialPort.getCommPort(input.nextLine());
//Initializing port
userPort.openPort();
if(userPort.isOpen())
{
System.out.println("Port initialized!");
//timeout not needed for event based reading
//userPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 100, 0);
}
else
{
System.out.println("Port not available");
return;
}
userPort.addDataListener(new SerialPortDataListener(){
@Override
public int getListeningEvents(){return SerialPort.LISTENING_EVENT_DATA_AVAILABLE;}
public void serialEvent(SerialPortEvent event)
{
if (event.getEventType() != SerialPort.LISTENING_EVENT_DATA_AVAILABLE)
return;
byte[] newData = new byte[userPort.bytesAvailable()];
int numRead = userPort.readBytes(newData, newData.length);
System.out.println("Read " + numRead + " bytes.");
}
});
}
}
