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000182_news@columbia.edu _Mon Oct 11 09:55:15 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: 11 Oct 1999 13:35:18 GMT
Organization: Columbia University
Message-ID: <7tsp2m$rbo$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <3801600F.65ED7F54@mediaone.net>,
Art Wildman <wildman@mediaone.net> wrote:
: Thanks for the quick response, I just found this group while looking for
: more info on kermit & thought I'd ask.
:
: Frank da Cruz wrote:
:
: > What version of C-Kermit do you have?
:
: Ver 6x comes with HPUX 10.20 I think, Not sure I'm doing this from memory...
:
Right, C-Kermit 6.0 is included with HP-UX 10.00 and above. But C-Kermit
6.0 is getting old and C-Kermit 7.0 is close to release.
: > : 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?
:
: Yes
:
: > How is the PC connected to the HP? A null modem cable?
:
: Yes
:
: > A *true* null modem cable, or the fakeout kind?
:
: fakeout loopback on pc side rts-cts & dsr-dtr, but just using 3 wires to
: tty2a3 - 2, 3 & 7.
:
A true 9- or 10-wire null modem with all cross-connects (RxD/TxD, RTS/CTS,
DTR/CD, DSR/CD), as shown on p.494 of the C-Kermit manual, is recommended.
If the HP-UX port driver requires certain signals, and they aren't there,
then it's not going to let the application use the port. This, in turn,
depends on which driver you are using. You said "tty2a3". OK, that's the
one for hardwired ports. But maybe it needs DSR and your cable isn't
providing it.
: > Did you build it yourself? How do you know it's wired appropriately?
: Yes, and I was able to test 2way comms by enabling device using HP's SAM,
: then respawning getty on same port set to 9600 hard-wired in inittab, init
: q -now able to hit rtn twice on pc procomm terminal and get login
: message. I was able to login, verifying 2-way comms. I found a partial
: procedure to test a port using kermit, and wanted to learn more about
: kermit.
:
If you want to use Kermit on each end without a login on the HP port,
obviously you'll need to be logged in to the HP some other way. Then try
the setup given in the manual for direct serial connections:
set modem type none ; Tell Kermit there is no modem
set carrier-watch off ; Don't require CD
set flow none ; No flow control
set port /dev/tty2a3 ; Open the port
set speed 9600 ; Set the speed
connect
set up the PC the same way.
: > : while playing 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?
:
: Yes it was in connect mode, I tried ctrl-\ c repeatedly, also ctrl-c and
: every other key sequence I could think of... no response.
:
Then probably it was stuck in a system call (like read() on the port).
Try following the instructions above and this shouldn't happen.
- Frank