XR2ACM0(1)                  General Commands Manual                 XR2ACM0(1)



NNAAMMEE
       xr2ACM0 - serial port ttyACM0 communication

SSYYNNOOPPSSIISS
       xr2ACM0 [-d device] [-i infilename] [-l lockfile] [-o outfilename] [-v]

DDEESSCCRRIIPPTTIIOONN
       Xr2ACM0  is for asynchronous raw serial port communication. The default
       port is /dev/ttyACM0 at 9600 baud. The default semaphore lock  file  is
       /var/lock/LCK..ttyACM0,  which  has  an fcntl(2) advisory lock applied,
       also. The serial port is controlled through termios(3), and is restored
       to  original values on exit. The serial port child read process is cre‐
       ated by fork(2) from the  parent  write  process,  and  both  processes
       respond  to  SIGINT  = ^C and SIGTERM signals. Asynchronous serial port
       control is implemented with select(2). The input file, (usually stdin,)
       uses noncanonical input for flow control.

       This program is the same as sprawACMO(1), except that extended keyboard
       characters, (the Arrow and Page keys,) are enabled, to approximate  the
       buttons on the Xfinity XR2 remote.

       The  program is intended to provide a simple, and reliable, serial port
       communication between a computer and a simple device.

OOPPTTIIOONNSS
       --dd ddeevviiccee
              Device name, (/dev/ttyACM0).

       --ii iinnffiilleennaammee
              Input filename, (stdin).

       --ll lloocckkffiillee
              Lock file name, (/var/lock/LCK..ttyACM0).

       --oo oouuttffiilleennaammee
              Output filename, (stdout).

       --vv     Print the program's version information

WWAARRNNIINNGGSS
       The termios(3) and fopen(2) settings tested only on Linux 2.4,  and  on
       US  Robotics 56K, V.92, and, 33.6 Sportster. No others were tested. The
       semaphore locking mechanism uses fcntl(2), and may  not  be  compatible
       with other serial programs.

SSEEEE AALLSSOO
       spcid(1),   spgettermios(1)  spsettermios(1),  spttyS0(1),  spttyS1(1),
       xr2ACM0(1), sprawS1(1), phone.sh(1)

DDIIAAGGNNOOSSTTIICCSS
       Error messages for  incompatible  arguments,  inaccessible  files,  and
       opening and closing files.

AAUUTTHHOORRSS
       ----------------------------------------------------------------------

       A license is hereby granted to reproduce this software source code and
       to create executable versions from this source code for personal,
       non-commercial use.  The copyright notice included with the software
       must be maintained in all copies produced.

       THIS PROGRAM IS PROVIDED "AS IS". THE AUTHOR PROVIDES NO WARRANTIES
       WHATSOEVER, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF
       MERCHANTABILITY, TITLE, OR FITNESS FOR ANY PARTICULAR PURPOSE.  THE
       AUTHOR DOES NOT WARRANT THAT USE OF THIS PROGRAM DOES NOT INFRINGE THE
       INTELLECTUAL PROPERTY RIGHTS OF ANY THIRD PARTY IN ANY COUNTRY.

       Copyright (c) 1994-2018, John Conover, All Rights Reserved.

       Comments and/or bug reports should be addressed to:

           john@email.johncon.com (John Conover)

       ----------------------------------------------------------------------



                                 June 18, 2018                      XR2ACM0(1)