lib/trig.c

   1
   2 /* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4 c-style: "K&R" -*- */
   3
   4 /*
   5    libgpiv - library for Particle Image Velocimetry
   6
   7    Copyright (C) 2004, 2005, 2006, 2007, 2008
   8    Gerber van der Graaf <gerber_graaf@users.sourceforge.net>
   9    Julio Soria <julio.soria@eng.monash.edu.au>
  10
  11    This file is part of libgpiv.
  12
  13    Libgpiv is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2, or (at your option)
  16    any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software Foundation,
  25    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26
  27
  28
  29 ------------------------------------------------------------------------------
  30 FILENAME:               trig.c
  31 LIBRARY:                libgpiv
  32 EXTERNAL FUNCTIONS:
  33                         gpiv_trig_openrtfs
  34
  35
  36 LAST MODIFICATION DATE:  $Id: trig.c,v 1.2 2007-11-23 16:16:15 gerber Exp $
  37 --------------------------------------------------------------------------- */
  38
  39
  40 #ifdef ENABLE_TRIG
  41 #include "gpiv.h"
  42
  43
  44
  45 gint
  46 gpiv_trig_openrtfs (gint *init,
  47                     gint *trig,
  48                     gint *stop,
  49                     gint *error
  50                     )
  51 /*-----------------------------------------------------------------------------
  52  * DESCRIPTION:
  53  *     Opens communication channels to camlasco-rtl kernel module
  54  *
  55  * INPUTS:
  56  *     init:            initialization or uploading of trigger parameters
  57  *     trig:            ?
  58  *     stop:            stop signal
  59  *     error:           error signal
  60  *
  61  * OUTPUTS:
  62  *     piv_trig_par_default:     structure of data aquisition parameters
  63  *
  64  * RETURNS:
  65  *---------------------------------------------------------------------------*/
  66 {
  67     gint ok = 0;
  68
  69     if((*init = open("/dev/rtf/1", O_WRONLY )) < 0)  {
  70         printf("fail in \"init\" FIFO open\n");
  71         return ok;
  72     }
  73
  74     if((*trig = open("/dev/rtf/2", O_WRONLY )) < 0)  {
  75         printf("fail in \"trig\" FIFO open\n");
  76         return ok;
  77     }
  78
  79     if((*stop = open("/dev/rtf/3", O_WRONLY )) < 0)  {
  80         printf("fail in \"stop\" FIFO open\n");
  81         return ok;
  82     }
  83
  84     if((*error = open("/dev/rtf/4", O_RDONLY )) < 0) {
  85         printf("fail in \"error\" FIFO open\n");
  86         return ok;
  87     }
  88
  89     ok = 1;
  90     return ok;
  91 }
  92
  93
  94
  95 #endif /* ENABLE_TRIG */