Hi David, First, let me say that I have never encountered this problem and that I am only suggesting approaches to figure out the problem. These ideas might not be helpful at all.
You could try to open the device with another program just to make sure that the device can really be opened by the user (e.g. "dd if=/dev/ttyUSB1 of=/dev/null bs=1 count=1", this should read one byte from the serial port). The device might be accessed by some other application (I think the braille device drivers were causing problems at some point in the past). You should be able to see what opens which file with the lsof command (list open files, you might have to install it first). The source code of the toscomm library is in $TOSROOT/tools/tinyos/java/serial. I'm not sure what the dependencies of the Makefiles are, but you could try compiling directly from this directory. If it doesn't work, you can recompile all tools (from $TOSROOT/tools). If all else fails, you could use the C version of the serial forwarder. Cheers, Urs David Li wrote: > I have just tried to use USB0 and it didn't crash but didn't receive > anything either: > > java net.tinyos.tools.Listen -comm serial@/dev/ttyUSB0:iris > > This has raised more questions: > I am supposed to use USB1 to communicate with the base station as higher > numbered port is for communication and lower numbered port USB0 is for > programming. What went wrong? > > David > > > On Tue, May 19, 2009 at 11:31 AM, David Li <[email protected]> wrote: > >> Hi, >> >> I am running Tinyos 2.1 on Ubuntu 9.10 and Sun Java SDK 1.5. Before this >> the SerialForwarder was ok and I had just ran "update-java-alternatives" to >> switch from GIJ Java to Sun Java 1.5. Now I am having problems the >> SerialForwarder GUI keeps showing the following: >> >> Could not open /dev/ttyUSB1: TOSComm JNI library runtime error: open: >> Input/output error >> >> serial@/dev/ttyUSB1:57600 died - restarting >> >> Same thing happend when I ran "java net.tinyos.tools.Listen". >> >> >> Does anyone know if this requires me to recompile SerialForwarder? And how >> do I do that? >> >> Thanks. >> >> David _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
