Detect USB CDC device connection/disconnection using Java and RXTX

Question

I have an application that can run either with or without a USB CDC device attached to the machine. This device is programmed to respond to a question with a specific answer so I can detect which serial port is is connected to. The thing is, I need to know when to perform this check. I don't want to create a thread to run this check over and over again, so I need to know how to listen to a "device connected" event. I have searched it before, but maybe I'm just not using the right key words, so any help would be very nice.

Obs: I'm using Java 1.7 and the RXTX library.

Have you tried jUsb api. long time ago I tried with that. you may check out that. — Debobroto Das, Nov 26 '12 at 05:06
So you need a device connected event for a serial port? Which OS are you using? — dsolimano, Nov 28 '12 at 15:12
The device itself will run on Linux but the development is being made in Windows 7. — Gustavo Sgarbi Campos, Jan 30 '13 at 21:36

score 1 · Answer 1 · edited May 23 '17 at 11:48

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I have the same problem and AFAIK there is no way to do this in a platform independent way. On linux one might do it as described here.

Anyway, in case your device is a USB/Serial converter, you will only get an event when the converter is (un)plugged, not when a device is attached to the converter itself.

edited May 23 '17 at 11:48

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answered Nov 28 '12 at 15:41

jopa

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Detect USB CDC device connection/disconnection using Java and RXTX

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