Hi Derek, I'm not an OSX user but should we change the instructions to tell users to make both the /var/lock and /var/spool/uucp directories? (with 777 access) Also, you mentioned a lock file must be manually deleted if a connection terminates prematurely. What error will the user receive if the lock file is still present?
- Brian ----- Original Message ----- From: "Derek Raycraft" <[EMAIL PROTECTED]> To: <lejos-discussion@lists.sourceforge.net> Sent: Thursday, October 19, 2006 7:22 AM Subject: [Lejos-discussion] iCommand and gnu.io.PortInUseException >I was checking out Lejos again because I have an RCX project to > program and discovered the iCommand project. This is awesome. It's > exactly what I've been look for, for controlling the NXT. > Unfortunately I had a lot of difficulty getting it going. > > I'm using a first generation G5 iMac, 10.4.8 and was getting the > following error when I try the Melody and the DirectNXT Applications. > > NXTCOMM = /dev/tty.NXT-DevB-1 > Stable Library > ========================================= > Native lib Version = RXTX-2.1-7 > Java lib Version = RXTX-2.1-7 > Error while connecting NXTCommand() constructor > gnu.io.PortInUseException: Unknown Application > at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354) > at icommand.nxtcomm.NXTComm.open(NXTComm.java:52) > at icommand.nxtcomm.NXTCommand.<clinit>(NXTCommand.java:16) > at icommand.platform.nxt.FileSystem.upload(FileSystem.java:28) > at Melody.main(Melody.java:17) > > As I've discovered the PortInUseException rarely has anything to do > the port being in use. > > At first I thought this was a problem with how I setup my Bluetooth > serial port. But eventual I tested the serial port with a terminal > program and it worked. > > That led me to believe it was a problem with my RXTX setup. After > much fiddling around, debugging, and googling I discovered the problem. > > For reasons I don't understand RXTX is not using /var/spool/uucp for > lock files. It's using /var/lock. A directory that didn't exist on > my system. Once I created this directory I started getting different > errors for the RXTX code. This directory requires read/write > permissions for the user. I just used the blanket chmod 777. > > The connection started working. > > I've managed to get both Melody and DirectNXT to work. > > The problem with the lock files is if something goes wrong in your > application the lock file doesn't get cleared and you have to > manually delete it before it will work again. > > I've discovered you can rebuild RXTX to not use lock files, but > figuring out how to build it is a project for another day. > > Thanks for getting this project going. As I said it's exactly the > kind of thing I've been looking for for controlling the NXT. I'll > let you know how thing go as I play with iCommand more. > > Derek > > > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job > easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Lejos-discussion mailing list > Lejos-discussion@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lejos-discussion > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Lejos-discussion mailing list Lejos-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lejos-discussion
