eibd/examples/madcread.c

   1 /*
   2     EIB Demo program - read ADC value
   3     Copyright (C) 2005-2011 Martin Koegler <mkoegler@auto.tuwien.ac.at>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19 #include "common.h"
  20
  21 int
  22 main (int ac, char *ag[])
  23 {
  24   int len, channel;
  25   EIBConnection *con;
  26   eibaddr_t dest;
  27   int16_t val;
  28   char *prog = ag[0];
  29
  30   parseKey (&ac, &ag);
  31   if (ac != 5)
  32     die ("usage: %s [-k key] url eibaddr channel count", prog);
  33   con = EIBSocketURL (ag[1]);
  34   if (!con)
  35     die ("Open failed");
  36   dest = readaddr (ag[2]);
  37   channel = atoi (ag[3]);
  38   len = atoi (ag[4]);
  39
  40   if (EIB_MC_Connect (con, dest) == -1)
  41     die ("Connect failed");
  42   auth (con);
  43
  44   len = EIB_MC_ReadADC (con, channel, len, &val);
  45   if (len == -1)
  46     die ("Read failed");
  47   printf ("Value: %d\n", val);
  48
  49   EIBClose (con);
  50   return 0;
  51 }