NAME

       ttysig - Serial Line Signal Controller

SYNOPSIS

       ttysig [options]

DESCRIPTION

       Interactively  control  serial  line  output signals (Request To Send, Data Terminal Ready), and read the
       current value of all control signals (Request To Send, Clear To  Send,  Data  Set  Ready,  Data  Terminal
       Ready, Data Carrier Detect, Ring Indicator).

       This program is part of the Qualcomm Atheros Powerline Toolkit.  See the AMP man page for an overview and
       installation instructions.

OPTIONS

       -s device
              Specify the serial device used.  The default is serial console device "/dev/ttyS0".

       -D value
              Set the serial control line DTR high if value is non-zero, low otherwise.

       -I     Interactive mode.

       -R value
              Set the serial control line RTS high if value is non-zero, low otherwise.

       -r     Print serial control line status on stdout.  This is performed after -R and -D.

       -?,--help
              Print  program  help  summary  on  stdout.  This option takes precedence over other options on the
              command line.

       -?,--version
              Print program version information on stdout.  This option takes precedence over other  options  on
              the  command line.  Use this option when sending screen dumps to Atheros Technical Support so that
              they know exactly which version of the Linux Toolkit you are using.

EXAMPLES

       The following example sets DTR high and RTS low at program start.  The user then interactively prints the
       current control signal values, and then sets DTR low.  Since no serial  devices  are  specified,  program
       defaults are used.

         $ ./ttysig -I -D 1 -R 0
         command (D #, R #, r, q): r
         RTS: -V
         CTS: -V
         DSR: -V
         DTR: +V
         DCD: -V
         RI : -V
         command (D #, R #, r, q): D 0
         command (D #, R #, r, q):

SEE ALSO

       amp(1), int6kdetect(1), int6kuart(1)

CREDITS

        Nathaniel Houghton

open-plc-utils-0.0.3                              November 2013                                        ttysig(1)