12-04-2003
How to read the CTS and DSR of RS232 in Unix using C language?
Hello to all Gurus out there,
Could you show me a source code in Unix platform using C language. I want to read the status or voltage level of the DSR and CTS.
Thanks a lot,
Swing5
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LEARN ABOUT CENTOS
solterm
solterm(1) IPMI Serial over LAN program solterm(1)
NAME
solterm - An IPMI Serial over LAN program
SYNOPSIS
solterm
<connection parms> [-e escape_char] [-notencrypted] [-notauthenticated] [-bitrate (9600|19200|38400|57600|115200)] [-alerts (suc-
ceed|defer|fail)] [-holdoff] [-ack-retries n] [-ack-timeout microseconds] [-v] [-q]
DESCRIPTION
The solterm program allows a user to make a remote serial connection over IPMI. The requires that the remote system support IPMI 2.0
Serial Over LAN.
OPTIONS
<connection parms>
The parameters for the connection depend on the connection type. These are all described in openipmi_conparms (7)
-e escape_char
The character to use to escape, or exit, the program. Entering this character right after a newline is entered causes the program
to go into command mode. A single character after this performs a command. The default escape character is "~" as shown below.
Supported commands are:
~. Terminate the program
~B Send a serial BREAK over the connection
~F Flush all buffers
~R Assert the Ring Indicator (RI) line
~r Deassert the Ring Indicator (RI) line
~D Assert DCD and DSR lines
~d Deassert DCD and DSR lines
~C Pause the output using CTS
~c Put CTS under BMC control
~? Help on escape commands
~~ Enter the escape character twice to send it.
-notencrypted
Do not encrypt the SOL data going over the connection.
-notauthenticated
Do not do integrity checks on the SOL data going over the connection.
-bitrate
Set the bitrate to the given value. The default is whatever the BMC has set it to.
-alerts
This specifies what to do if a alert that requires a callout occurs on the line.
succeed
specifies that serial/modem alerts are to succeed while SoL is active.
deferred
specifies that serial/modem alerts are to be deferred for the duration of the SoL session.
fail specifies that serial/modem alerts automatically fail during the SoL session. This is the default.
-holdoff
Specifies that CTS, DTR, and DSR are to be deasserted at the start of the SoL session so that the configuration may be modified
before the handshake is released.
-v Be more verbose. Maybe specified multiple time for more output.
-q Be less verbose. Maybe specified multiple time for less output.
SEE ALSO
openipmi_conparms(7)
KNOWN PROBLEMS
None
AUTHOR
Darius Davis <dariusd@users.sourceforge.net>
OpenIPMI 05/13/03 solterm(1)