1 /*

     2  * Copyright (c) 2002,2016 Mario de Sousa (msousa@fe.up.pt)

     3  *

     4  * This file is part of the Modbus library for Beremiz and matiec.

     5  *

     6  * This Modbus library is free software: you can redistribute it and/or modify

     7  * it under the terms of the GNU Lesser General Public License as published by

     8  * the Free Software Foundation, either version 3 of the License, or

     9  * (at your option) any later version.

    10  *

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

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

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 

    14  * General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU Lesser General Public License

    17  * along with this Modbus library.  If not, see <http://www.gnu.org/licenses/>.

    18  *

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

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

    21  */

    22 

    23 

    24 #ifndef MODBUS_LAYER2_H

    25 #define MODBUS_LAYER2_H

    26 

    27 #include <time.h> /* struct timespec data type */

    28 

    29 //#include <sys/socket.h>

    30 //#include <netinet/in.h>

    31 #include <netinet/ip.h> /* superset of previous */ // Required for INADDR_ANY

    32        

    33        

    34 /* Library Error codes */

    35 #define PORT_FAILURE   -101

    36 #define INTERNAL_ERROR -102

    37 #define TIMEOUT        -103

    38 #define INVALID_FRAME  -104

    39 #define MODBUS_ERROR   -105

    40 

    41 /* NOTE: Modbus error codes are defined in mb_util.h */

    42 

    43 

    44 

    45 

    46 typedef enum {optimize_speed, optimize_size} optimization_t;

    47 

    48 

    49 typedef enum {

    50         naf_ascii,

    51         naf_rtu,

    52         naf_tcp,

    53   } node_addr_family_t;

    54 

    55 typedef struct {

    56         const char *host;

    57         const char *service;

    58         int         close_on_silence;  

    59   } node_addr_tcp_t;

    60 

    61 typedef struct {

    62         const char *device;

    63         int         baud;       /* plain baud rate, eg 2400; zero for the default 9600 */

    64         int         parity;     /* 0 for none, 1 for odd, 2 for even                   */

    65         int         data_bits;

    66         int         stop_bits;

    67         int         ignore_echo; /* 1 => ignore echo; 0 => do not ignore echo */

    68   } node_addr_rtu_t;

    69 

    70 typedef node_addr_rtu_t node_addr_ascii_t;

    71 

    72 typedef union {

    73         node_addr_ascii_t ascii;

    74         node_addr_rtu_t   rtu;

    75         node_addr_tcp_t   tcp;

    76   } node_addr_common_t;

    77 

    78 typedef struct {

    79         node_addr_family_t  naf;

    80         node_addr_common_t  addr;

    81   } node_addr_t;

    82 

    83 #endif  /* MODBUS_LAYER2_H */

    84 

    85 

    86 

    87 

    88 

    89 

    90 

    91