ACE/examples/IPC_SAP/DEV_SAP/reader/reader.cpp

   1 #include "ace/DEV_Addr.h"
   2 #include "ace/DEV_Connector.h"
   3 #include "ace/TTY_IO.h"
   4
   5 int ACE_TMAIN (int argc, ACE_TCHAR *argv[])
   6 {
   7   if (argc < 2)
   8     ACE_ERROR_RETURN ((LM_ERROR,
   9                        ACE_TEXT ("usage: %s device-filename\n"),
  10                        argv[0]),
  11                       1);
  12
  13   ACE_TTY_IO read_dev;
  14   ACE_DEV_Connector con;
  15
  16   if (con.connect (read_dev,
  17                    ACE_DEV_Addr (argv[1])) == -1)
  18     ACE_ERROR_RETURN ((LM_ERROR,
  19                        ACE_TEXT ("%p\n"),
  20                        argv[1]),
  21                       1);
  22
  23   ACE_TTY_IO::Serial_Params myparams;
  24   // Try to read default parameters
  25   if (read_dev.control (ACE_TTY_IO::GETPARAMS, &myparams) == -1)
  26     {
  27       ACE_DEBUG ((LM_DEBUG, ACE_TEXT("GETPARAMS is not supported\n")));
  28     }
  29   else
  30     {
  31       ACE_DEBUG ((LM_DEBUG, ACE_TEXT("GETPARAMS is supported\n")));
  32     }
  33
  34   myparams.baudrate = 19200;
  35   myparams.readmincharacters = 0;
  36   myparams.readtimeoutmsec = 10*1000; // 10 seconds
  37
  38   if (read_dev.control (ACE_TTY_IO::SETPARAMS, &myparams) == -1)
  39     ACE_ERROR_RETURN ((LM_ERROR,
  40                        ACE_TEXT ("%p control\n"),
  41                        argv[1]),
  42                       1);
  43
  44   // Read till character 'q'.
  45   for (char readback = 'x'; readback != 'q'; )
  46     {
  47       ssize_t bytes_read =
  48         read_dev.recv ((void *) &readback, 1);
  49
  50       if (bytes_read == 1)
  51           ACE_DEBUG ((LM_DEBUG,
  52                       ACE_TEXT ("read: %c\n"),
  53                       readback));
  54       else if (bytes_read == 0)
  55           ACE_DEBUG ((LM_DEBUG,
  56                       ACE_TEXT ("timeout!\n")));
  57       else if (bytes_read == -1)
  58           ACE_ERROR_RETURN ((LM_ERROR,
  59                              ACE_TEXT ("%p  recv\n"),
  60                              argv[1]), 1);
  61     }
  62
  63   return 0;
  64 }