After using RXTX for a number of different projects, I\'ve come across many annoying discrepancies and issues that can only sensibly be put down to bugs in the library - dea
One of the issues of RXTX I faced was the delay closing the port. When checking with setserial the port configuration I discovered a parameter closing_delay=3000. This means that the port closes 3 sec after the close() method was executed. Resetting the closing_delay toany value is ignored by RXTX. RXTX insists in 3sec delay.
the JSSC library performed to our satisfaction