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000179_news@columbia.edu _Sun Oct 10 10:55:04 1999.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Subject: Re: set line: Sorry can't open connection
Date: 10 Oct 1999 14:30:57 GMT
Organization: Columbia University
Message-ID: <7tq7v1$2n1$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <38003AEC.C6CA47FA@mediaone.net>,
Art Wildman <wildman@mediaone.net> wrote:
: Pretty basic stuff, but it's been a long time since I've setup serial devs...
:
: While trying to test a port on HPUX...
:
What version of C-Kermit do you have?
: C-Kermit> c
: set line /dev/tty2a3
: set speed 9600
: parity=space
: duplex=half
:
Those last two should be:
set parity space
set duplex half
: Can send string from pc com1 to hp tty2a3 OK.
: "The quick brown fox..."
:
How do you know it's OK? C-Kermit is in CONNECT mode and you see it on
the HP's screen?
How is the PC connected to the HP? A null modem cable? A *true* null
modem cable, or the fakeout kind? Did you build it yourself? How do you
know it's wired appropriately?
: am unable to send same string from hp tty2a3 to pc using
: procomm-vt100-kermit and have it display in procomm terminal/chat window.
:
Obviously that's a question for the Procomm people.
: while playnig around with port settings (duplex=full) I managed to lock up
: kermit.
:
What makes you conclude it is locked up? Are you saying it was in CONNECT
mode, and then you could no longer escape back? Or that it was in command
mode and would no longer respond to commands? Please be specific about what
state it was in and what you tried to do and what the response was.
killed processes, and abe to recover but now when I try to
: set line /dev/tty2a3
: error: Sorry can't open connection on /dev/tty2a3
:
: Is there a lock file or something somewhere keeping the port open and
: unavailable?
:
If you have C-Kermit 6.0 or later, the problem would not be a lockfile.
C-Kermit detects and handles stale lockfiles, and anyway it prints an
informative message stating why the device could not be opened.
C-Kermit 6.0, while in CONNECT mode, runs in two forks (processes). The
most likely explanation is that you killed one but not the other.
C-Kermit 7.0:
http://www.columbia.edu/kermit/ck70.html
runs in only one fork at all times (at least on HP-UX and most other modern
UNIX varieties), has better serial port handling, and better error messages.
: How do I clear this? What do I need to do to get kermit to
: transmit to pc properly?
:
: Manual is on order, any help in mean time is appreciated. -Thanks
:
The first question is: why not simply set up a getty on the HP-UX port and
then log in to it from the PC? That's the normal way of connecting a PC
and a UNIX computer.
- Frank