Question

I have to connect the Arduino board I got with Java and get data from it. The board itself is working correctly (tested on another computer with a Oython script).

My problem now is to actually use the USB port. I correctly installed the RXTX library, and it does list the available port, but only COM ports and not USB ones.

while (enumComm.hasMoreElements()) {
    CommPortIdentifier currPortId = (CommPortIdentifier) enumComm.nextElement();
    System.out.println(currPortId.getName());
}

This is the code I’m using to iterate though the available ports. The output looks like:

WARNING:  RXTX Version mismatch
    Jar version = RXTX-2.2pre1
    native lib Version = RXTX-2.2pre2
COM3
COM4

I’m using Windows. For Linux there are lots of posts, and it seems to be so much easier there as they simple appear in the list without any additional help/changed code.

Answer 1

Is the USB port properly detected as a COM port? Look in the Device Manager, you should have something like this: