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000143_googlea.w.husm…spamgourmet.com_Sun Mar 21 12:38:15 2004.msg
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Path: newsmaster.cc.columbia.edu!iad-feed.news.verio.net!peer1.stngva01.us.to.verio.net!news.verio.net!news.glorb.com!postnews2.google.com!not-for-mail
From: googlea.w.husmann@spamgourmet.com (Wolfgang Husmann)
Newsgroups: comp.protocols.kermit.misc
Subject: Kermit at Mac OS X with Keyspan SX Pro
Date: 21 Mar 2004 07:31:58 -0800
Organization: http://groups.google.com
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Xref: newsmaster.cc.columbia.edu comp.protocols.kermit.misc:14854
I have been using successfully Kermit on my G4/Mac OS X
10.2.x/Griffins G4Port to communicate with my scientific calculator
Hewlett-Packard HP-48SX (for details please refer to my web page
http://chaos-zu-haus.de/HP48AndMacOSX/HP48AndMacOSX.html).
Recently I replaced Griffins G4Port (with a 3-way serial switch) by a
Keyspan SX Pro 4-port serial card. While my serial Palm III craddle
(software: Palm Desktop) and my modem US Robotics Sportster Vi
(software: Apples PPP) continue to work without any problems I cannot
get the HP-48SX to work: Kermit says "Carrier required but not
detected. Connection broken (carrier signal lost)."
Here is how I try to connect to the HP-48SX (sorry about the length of
this):
I connect the HP-48SX with Hewlett-Packards serial cable to the SX
pros serial port #1.
When I tell Kermit to use the SX Pros first port ("set line
/dev/tty.SXProSCP1.1") the status of Port1 in the "Device Details"
window of "Keyspan Serial Assistant" changes from "Available" to "In
Use 9600".
After that I check Kermits communication settings to make sure they
match the HP-48SXs settings:
) /Users/wolfgang/) C-Kermit>show communications
)
) Communications Parameters:
) Line: /dev/tty.SXProSCP1.1, speed: 9600, mode: local, modem:
generic
) Parity: none, stop-bits: (default) (8N1)
) Duplex: full, flow: rts/cts, handshake: none
) Carrier-watch: auto, close-on-disconnect: off
) Lockfile: /var/spool/uucp/LCK..tty.SXProSCP1.1
) Terminal bytesize: 8, escape character: 28 (^\)
)
) Carrier Detect (CD): Off
) Dataset Ready (DSR): Off
) Clear To Send (CTS): On
) Ring Indicator (RI): Off
) Data Terminal Ready (DTR): On
) Request To Send (RTS): On
)
) Type SHOW DIAL to see DIAL-related items.
) Type SHOW MODEM to see modem-related items.
When I start the data transfer an error occurs:
) (/Users/wolfgang/) C-Kermit>get FPFahrliste
)
) ?Carrier required but not detected
) ?Connection broken (carrier signal lost)
In "Keyspan Serial Assistant" neither "Device Details" nor "Event Log"
shows any trace of the failed data transfer.
To solve that problem I tried the following without success:
- tried "/dev/cu.SXProSCP1.1" instead of "/dev/tty.SXProSCP1.1"
- tried the other ports of the card with the appropriate entry in
/dev/
- "set carrier-watch off" in Kermit makes Kermit to wait forever
instead of aborting with an error
Kermits "show communications" reveals differences between the Keyspan
SX Pro and Griffins G4Port:
"Carrier Detect (CD)": SX Pro OFF, G4Port ON
"Clear To Send (CTS)": SX Pro ON, G4Port OFF
I do not really understand what that means and how that may affect
kermits communication with the HP.
Any ideas?
Any hint towards a possible solution appreciated, Wolfgang H.