statserial - phpMan

STATSERIAL(1)                    User Commands                   STATSERIAL(1)



NAME
       statserial - display serial port modem status lines


SYNOPSIS
       statserial [-n |  -d | -x] <device-name>


DESCRIPTION
       Statserial  displays  a  table  of the signals on a standard 9-pin or 25-pin serial
       port, and indicates the status of the handshaking  lines.  It  can  be  useful  for
       debugging problems with serial ports or modems.

       The  optional  device-name  parameter  is  the full name of the device file for the
       serial port in question. If not specified, the default is taken from  the  environ-
       ment variable MODEM if set, otherwise /dev/cua1.



COMMAND-LINE OPTIONS
       Each of the command line options is mutually exclusive.


       -n   Normally  statserial will loop continuously, updating the status at one second
            intervals; you can exit using Control-C. The -n option disables looping.


       -d    With this option the status of the modem is printed as a decimal number.  The
            bits are encoded as follows (XXX indicates unused bits):

            +---+---+---+---+---+---+---+---+---+
            | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
            +---+---+---+---+---+---+---+---+---+
            |DSR|RI |DCD|CTS|XXX|XXX|RTS|DTR|XXX|
            +---+---+---+---+---+---+---+---+---+


       -x   This option is the same as -d, except that the output is in hexadecimal.


BUGS/LIMITATIONS
       Statserial only works with devices that support the TIOCMGET ioctl.

       You need permission to read the device file.

       The device file may be locked if other applications are using it.


AUTHOR
       Statserial  was  written by Jeff Tranter (Jeff_Tranter AT Mitel.COM), later updated by
       Frank Baumgart (godot AT uni-paderborn.de) and is released under the conditions of the
       GNU  General Public License.  See the file COPYING and notes in the source code for
       details.


SEE ALSO
       setserial(8) stty(1)
       /usr/src/linux/drivers/char/serial.c /usr/include/linux/termios.h



Linux                          17 December 1994                  STATSERIAL(1)

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