I can't get serial communication to work with my Java application on 32 bit systems, both Windows XP and 7. I've tried jssc and all i get is "Port Busy". The solution from Oracle doesn't give "Port Busy", but it just hangs, doesn't read any data. Everything works fine on 64 bit systems. Any idea what i might be doing wrong that causes it not to work on 32 bit? Other serial comm libraries that you might have used with success on 32 bit systems? Thank you!
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It turns out it was a packaging problem. Somehow the serial communication library didn't get packaged right. We redid it and now everything works.