CODEWITHSUNDEEP
javaserial-porthotplugging
dmy
dmy

Reputation: 11

jSerialComm: dynamically detect available serial ports (hotplug device)

I've created a Java GUI which lists all serial ports in a drop down menu from which the user selects the correct port and clicks connect. Connection to an Arduino is then established and the user is able to perform some actions. I get the available ports using Fazecast JSerialComm:

SerialPort[] ports = SerialPort.getCommPorts();

I grab the ports and put the results into the drop down. This works flawlessly BUT only when the Arduino is plugged into the Mac BEFORE launching my Java GUI. Is there a way to detect a hotplugged device in Java? I already thought of getting the com ports periodically (every second or so) but to me that does seem to be a very elegant solution.

Upvotes: 1

Views: 1420

Answers (1)

Mustafa Jamal
Mustafa Jamal

Reputation: 13

update: I found this answered by another user:

Serial communication manager have APIs to find serial port names like COMxx dynamically. Just connect your USB-USRT IC and SCM library will tell you the device node for it. Just google for Serial communication manager. It is hosted on GitHub.

src

You might do this by checking if the port is opened or not after trying to open it using:

SerialPort[] serialPorts = SerialPort.getCommPorts();
        SerialPort liveSerialPort = null;
        for (SerialPort p: serialPorts) {
            p.openPort();
            if (p.isOpen()) {
                liveSerialPort = p;
                System.out.println("HERE opened port = " + liveSerialPort.getSystemPortName());
                break;
            }
        }

Upvotes: 0

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