demo/main.c

   1 /*
   2  */
   3
   4 #include <stdio.h>
   5 #include <comedilib.h>
   6 #include <fcntl.h>
   7 #include <unistd.h>
   8 #include <sys/ioctl.h>
   9 #include <errno.h>
  10 #include <getopt.h>
  11 #include <ctype.h>
  12 #include <malloc.h>
  13
  14
  15 char *filename="/dev/comedi0";
  16 int verbose_flag;
  17 comedi_t *device;
  18
  19 int value;
  20 int subdevice;
  21 int channel;
  22 int aref;
  23 int range;
  24
  25
  26 int parse_options(int argc, char *argv[])
  27 {
  28         int c;
  29
  30
  31         while (optind<argc) {
  32                 c = getopt(argc, argv, "acsrfvdgom");
  33                 switch (c) {
  34                 case -1:
  35                         /* data value */
  36                         sscanf(argv[optind],"%d",&value);
  37                         optind++;
  38                         break;
  39                 case 'f':
  40                         filename = argv[optind];
  41                         optind++;
  42                         break;
  43                 case 's':
  44                         sscanf(argv[optind],"%d",&subdevice);
  45                         optind++;
  46                         break;
  47                 case 'c':
  48                         sscanf(argv[optind],"%d",&channel);
  49                         optind++;
  50                         break;
  51                 case 'a':
  52                         sscanf(argv[optind],"%d",&aref);
  53                         optind++;
  54                         break;
  55                 case 'r':
  56                         sscanf(argv[optind],"%d",&range);
  57                         optind++;
  58                         break;
  59                 case 'v':
  60                         verbose_flag = 1;
  61                         break;
  62                 case 'd':
  63                         aref=AREF_DIFF;
  64                         break;
  65                 case 'g':
  66                         aref=AREF_GROUND;
  67                         break;
  68                 case 'o':
  69                         aref=AREF_OTHER;
  70                         break;
  71                 case 'm':
  72                         aref=AREF_COMMON;
  73                         break;
  74                 default:
  75                         printf("bad option\n");
  76                         exit(1);
  77                 }
  78         }
  79
  80         return argc;
  81 }
  82
  83
  84