a few possibilities come to my mind...
You may need to wait longer for things to settle before reopening
the port. Or the port/driver itself may be wedged. I have that trouble
with my current USB->serial converter and have to unplug the cable
to get it to cooperate.
SF may not be closing the serial port correctly when you stopDetecting().
You could try setting sf = null and doing gc(). That might make a finalizer
run someplace. Then you need to create a new sf of course.
It's not clear to me if the javax.comm lib is very smart about closing
ports. So it might just-not-work(TM). You may need to kill the entire
process running sf to get it cleaned up.
It might be easier to construct your app as a script that starts SF
in the background and then runs your foreground program...or...if
everything is running locally anyway, just use direct serial access
in your program.
MS
Javier . wrote:
Hi, I'm trying to use SerialForwarder in my aplication, but Iwant to do
it invisible to the user.
Is not dificult to start listening to the serial port with the "-no-gui"
option. The problem begins when I stop SerialForwarder listening to the
port. If I try to start listening again, this advise apears:
[EMAIL PROTECTED]:57600 died - restarting (java.io.IOException: Port COM3 busy)
SF enabled, 1 client, 0 packets read, 0 packets written SF enabled, 1
client, 0 packets read, 0 packets written SF enabled, 1 client, 0
packets read, 0 packets written
SF disabled, 1 client, 0 packets read, 0 packets written
Followed by this error message:
java.io.IOException: Port COM3 busy
at
net.tinyos.packet.SerialByteSource.openStreams(SerialByteSource.java:69)
at net.tinyos.packet.StreamByteSource.open(StreamByteSource.java:51)
at
net.tinyos.packet.Packetizer.openSource(Packetizer.java:119).........
This is my code:
public synchronized void startDetecting(){
if (sf==null){
try {
sf = new SerialForwarder(new String[]
{"-quiet","-no-gui","-comm","[EMAIL PROTECTED]"+serialPort+":mica2","-port","9001"});
} catch (IOException e) {
e.printStackTrace();
}
}
else{
sf.startListenServer();
}
waitingForConnection = new Vector(0);
moteif = new MoteIF(PrintStreamMessenger.err);
moteif.registerListener(new ConnectionMsg(),this);
detecting=true;
}
public synchronized void stopDetecting(){
moteif.deregisterListener(new ConnectionMsg(),this);
sf.listenServerStopped
sf.stopListenServer();
detecting=false;
}
I'm using the 1.1.15 CVS version.
The only thing I want is to have a variable called sf of the type
SerialForwarder in order to start and stop listening when the user wants
but without the SerialForwarder gui.
Thanks in advance.
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