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statserial ()
  • >> statserial (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
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    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 environment 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@Mitel.COM), later updated by Frank Baumgart (godot@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


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    COMMAND-LINE OPTIONS
    BUGS/LIMITATIONS
    AUTHOR
    SEE ALSO


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