[gentoo-user] Re: java comm ports issue

[Leigh Stewart]

I solved the problem by installing the latest stable binaries directly
from rxtx.org.  To anyone  having trouble with this, I would recommend
you do the same.  Maybe someone could update the ebuild to the most
recent version...

On 5/4/06, Leigh Stewart <agrodellic@×××××.com> wrote:
> Using rxtx, i cant get past square one on my current system.  Ive been
> trying on and off for the last few months to get some onewire devices
> working with my system but havent had any luck.  So in the process of
> troubleshooting, I built and ran this fairly simple program:
>
> http://www.java2s.com/ExampleCode/Development-Class/OpenaserialportusingJavaCommunications.htm
>
> As soon as I try to open any port, a native exception is thrown, which
> is a flippin pain.
>
> I am in uucp, and to be sure I have applied liberal permissions to the
> serial devices in dev and the contents of /var/lock (and /var/lock
> itself).  ie
>
> lstewart@yotta ~/Desktop/javaxcomm $ ls -al /dev/ttyS{0,1}
> crwxrwxr-x  1 root tty 4, 64 Feb 23 09:56 /dev/ttyS0
> crwxrwxr-x  1 root tty 4, 65 Feb 23 09:56 /dev/ttyS1
>
> lstewart@yotta ~/Desktop/javaxcomm $ id
> uid=1000(lstewart) gid=442(media),
> groups=5(tty),7(lp),10(wheel),11(floppy),12(mail),14(uucp),16(cron),18(audio),19(cdrom),20(dialout),21(ftp),27(video),35(games),80(cdrw),81(apache),100(users),245(slocate),442(media),446(plugdev),449(camera)
>
> lstewart@yotta ~/Desktop/javaxcomm $ ls -al /var/lock/
> total 5
> drwxrwxr-x   2 root     uucp  104 May  4 17:23 .
> drwxr-xr-x  19 root     root  552 Apr 20 23:29 ..
> -rwxrwxr-x   1 root     root    0 Mar 27 22:18 .keep
> -r--r--r--   1 lstewart media  11 May  4 17:23 LCK..ttyS0
>
> The answer MUST be simple...this is such a basic task and Linux has
> such a long history in interfacing with serial devices .... i mean
> RS-232!! I know im missing something very simple.....anyone???
>

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