stage4/generate_cc/plciec.cc
author mario
Thu, 01 Feb 2007 11:31:46 +0100
changeset 7 0df673a4a561
parent 0 fb772792efd1
permissions -rwxr-xr-x
Added some comments. Fixed some accesses to potential NULL pointers.
/*
 * (c) 2003 Mario de Sousa
 *
 * Offered to the public under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * This code is made available on the understanding that it will not be
 * used in safety-critical situations without a full and competent review.
 */

/*
 * An IEC 61131-3 IL and ST compiler.
 *
 * Based on the
 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
 *
 */


/*
 * Code to be included into the code generated by the 4th stage.
 *
 * This is part of the 4th stage that generates
 * a c++ source program equivalent to the IL and ST
 * code.
 */


TIME __CURRENT_TIME;

int main(int argc, char **argv) {
  struct timespec tp;

  if (plc_init(DEFAULT_MODULE_NAME, argc, argv) < 0) {
      printf("Error connecting to PLC.\n");
      exit(EXIT_FAILURE);
  }
  __configuration_c config;
  /* loop... */
  while (1) {
    plc_scan_beg();
    plc_update();
    if (clock_gettime(CLOCK_REALTIME, &tp) < 0)
      IEC_error();
    __CURRENT_TIME = tp;
    config.run();
    plc_update();
    plc_scan_end();
  } /* while (1) */
return -1;
}