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Full Discussion: urgent......Serial port
Operating Systems Linux urgent......Serial port Post 302143610 by porter on Friday 2nd of November 2007 05:53:30 AM
Old 11-02-2007
Quote:
Originally Posted by arunchaudhary19
every port is showing opening correctly..........
then also not recieving data??????
what's happening???????
Configure the terminal using

ctrl+A Z O Serial-Port-Setup

set the port name and baudrate,

set parity to none, handshaking to none, bits to 8bits

If you have this running on either end and you type at one end and nothing is happening then you are, what we call "not connected".

So you have to go through the process of confirming that your device name does really map to the 9 or 25 pins sticking out of the back of your machine.

And you also have to try with null-modem, or what ever combination of 9 or 25 pin dongles you have.
 

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TTYSRV(8)						      System Manager's Manual							 TTYSRV(8)

NAME
ttysrv - connect to a serial port and log output SYNOPSIS
ttysrv [-o option] [-s sock] [-l log] -t tty [-b baud] [-p parity] [-w wordsize] [-i pidfile] DESCRIPTION
ttysrv is the backend for rconsole. It connects to the serial port, handles the log file and waits for connections from rconsole to view what's happening on the serial console. OPTIONS
-t tty Specify which device to connect to. -s sock The name of the socket to listen for connections from rconsole on. -o option Specify any ttyios options to open the port with. Currently only nolocal is supported. -l log The logfile to write to. If not set then no log is kept. -b baud Set the baud rate to talk to the port at. Defaults to 9600. -p parity Set the parity for the serial port. Defaults to none. -w wordsize Set the word size for the serial port. Defaults to 8 bits. -i pidfile The file to write the pid of ttysrv to. If not specified no such file is written. SEE ALSO
rconsole(1), remote-tty(1). AUTHOR
rtty was written by Paul Vixie <vixie@isc.org>. This manual page was written by Jonathan McDowell <noodles@earth.li> for the Debian project (but may be used by others). May 23, 2006 TTYSRV(8)
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