1 /*

     2  * (c) 2003 Mario de Sousa

     3  *

     4  * Offered to the public under the terms of the GNU General Public License

     5  * as published by the Free Software Foundation; either version 2 of the

     6  * License, or (at your option) any later version.

     7  *

     8  * This program is distributed in the hope that it will be useful, but

     9  * WITHOUT ANY WARRANTY; without even the implied warranty of

    10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General

    11  * Public License for more details.

    12  *

    13  * This code is made available on the understanding that it will not be

    14  * used in safety-critical situations without a full and competent review.

    15  */

    16 

    17 /*

    18  * An IEC 61131-3 IL and ST compiler.

    19  *

    20  * Based on the

    21  * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)

    22  *

    23  */

    24 

    25 

    26 /*

    27  * Code to be included into the code generated by the 4th stage.

    28  *

    29  * This is part of the 4th stage that generates

    30  * a c++ source program equivalent to the IL and ST

    31  * code.

    32  */

    33 

    34 

    35 TIME __CURRENT_TIME;

    36 

    37 int main(int argc, char **argv) {

    38   struct timespec tp;

    39 

    40   if (plc_init(DEFAULT_MODULE_NAME, argc, argv) < 0) {

    41       printf("Error connecting to PLC.\n");

    42       exit(EXIT_FAILURE);

    43   }

    44   __configuration_c config;

    45   /* loop... */

    46   while (1) {

    47     plc_scan_beg();

    48     plc_update();

    49     if (clock_gettime(CLOCK_REALTIME, &tp) < 0)

    50       IEC_error();

    51     __CURRENT_TIME = tp;

    52     config.run();

    53     plc_update();

    54     plc_scan_end();

    55   } /* while (1) */

    56 return -1;

    57 }

    58 

    59 

    60 

    61 

    62