modbus_server.h File Reference

Modbus/TCP server. More...

#include "core/net.h"
#include "modbus/modbus_common.h"
#include "core/crypto.h"
#include "tls.h"
#include "tls_ticket.h"

Go to the source code of this file.

Data Structures
struct	ModbusServerSettings
	Modbus/TCP server settings. More...
struct	_ModbusClientConnection
	Modbus/TCP client connection. More...
struct	_ModbusServerContext
	Modbus/TCP server context. More...

Macros
#define	MODBUS_SERVER_SUPPORT   ENABLED
#define	MODBUS_SERVER_TLS_SUPPORT   DISABLED
#define	MODBUS_SERVER_DIAG_SUPPORT   DISABLED
#define	MODBUS_SERVER_STACK_SIZE   650
#define	MODBUS_SERVER_PRIORITY   OS_TASK_PRIORITY_NORMAL
#define	MODBUS_SERVER_MAX_CONNECTIONS   2
#define	MODBUS_SERVER_TIMEOUT   60000
#define	MODBUS_SERVER_TICK_INTERVAL   1000
#define	MODBUS_SERVER_TLS_TX_BUFFER_SIZE   2048
#define	MODBUS_SERVER_TLS_RX_BUFFER_SIZE   2048
#define	MODBUS_SERVER_MAX_ROLE_LEN   32
#define	MODBUS_SERVER_PRIVATE_CONTEXT
#define	ModbusServerContext   struct _ModbusServerContext
#define	ModbusClientConnection   struct _ModbusClientConnection

Typedefs
typedef error_t(*	ModbusServerOpenCallback) (ModbusClientConnection *connection, IpAddr clientIpAddr, uint16_t clientPort)
	TCP connection open callback function. More...
typedef void(*	ModbusServerCloseCallback) (ModbusClientConnection *connection)
	TCP connection close callback function. More...
typedef error_t(*	ModbusServerTlsInitCallback) (ModbusClientConnection *connection, TlsContext *tlsContext)
	TLS initialization callback function. More...
typedef void(*	ModbusServerLockCallback) (void)
	Lock Modbus table callback function. More...
typedef void(*	ModbusServerUnlockCallback) (void)
	Unlock Modbus table callback function. More...
typedef error_t(*	ModbusServerReadCoilCallback) (const char_t *role, uint16_t address, bool_t *state)
	Get coil state callback function. More...
typedef error_t(*	ModbusServerWriteCoilCallback) (const char_t *role, uint16_t address, bool_t state, bool_t commit)
	Set coil state callback function. More...
typedef error_t(*	ModbusServerReadRegCallback) (const char_t *role, uint16_t address, uint16_t *value)
	Get register value callback function. More...
typedef error_t(*	ModbusServerWriteRegCallback) (const char_t *role, uint16_t address, uint16_t value, bool_t commit)
	Set register value callback function. More...
typedef error_t(*	ModbusServerProcessPduCallback) (const uint8_t *request, size_t requestLen, uint8_t *response, size_t *responseLen)
	PDU processing callback function. More...
typedef void(*	ModbusServerTickCallback) (ModbusServerContext *context)
	Tick callback function. More...

Enumerations
enum	ModbusConnectionState {   MODBUS_CONNECTION_STATE_CLOSED = 0, MODBUS_CONNECTION_STATE_CONNECT_TLS = 1, MODBUS_CONNECTION_STATE_RECEIVE = 2, MODBUS_CONNECTION_STATE_SEND = 3,   MODBUS_CONNECTION_STATE_SHUTDOWN_TLS = 4, MODBUS_CONNECTION_STATE_SHUTDOWN_TX = 5, MODBUS_CONNECTION_STATE_SHUTDOWN_RX = 6 }
	Modbus/TCP connection state. More...

Functions
void	modbusServerGetDefaultSettings (ModbusServerSettings *settings)
	Initialize settings with default values. More...
error_t	modbusServerInit (ModbusServerContext *context, const ModbusServerSettings *settings)
	Initialize Modbus/TCP server context. More...
error_t	modbusServerStart (ModbusServerContext *context)
	Start Modbus/TCP server. More...
error_t	modbusServerStop (ModbusServerContext *context)
	Stop Modbus/TCP server. More...
void	modbusServerTask (ModbusServerContext *context)
	Modbus/TCP server task. More...
void	modbusServerDeinit (ModbusServerContext *context)
	Release Modbus/TCP server context. More...

Detailed Description

Modbus/TCP server.

License

SPDX-License-Identifier: GPL-2.0-or-later

Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneTCP Open.

This program is free software; you can redistribute it and/or modify it 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.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author

Oryx Embedded SARL (www.oryx-embedded.com)

Version

2.4.4

Definition in file modbus_server.h.

Macro Definition Documentation

MODBUS_SERVER_DIAG_SUPPORT

#define MODBUS_SERVER_DIAG_SUPPORT   DISABLED

Definition at line 54 of file modbus_server.h.

MODBUS_SERVER_MAX_CONNECTIONS

#define MODBUS_SERVER_MAX_CONNECTIONS   2

Definition at line 73 of file modbus_server.h.

MODBUS_SERVER_MAX_ROLE_LEN

#define MODBUS_SERVER_MAX_ROLE_LEN   32

Definition at line 108 of file modbus_server.h.

MODBUS_SERVER_PRIORITY

#define MODBUS_SERVER_PRIORITY   OS_TASK_PRIORITY_NORMAL

Definition at line 68 of file modbus_server.h.

MODBUS_SERVER_PRIVATE_CONTEXT

#define MODBUS_SERVER_PRIVATE_CONTEXT

Definition at line 115 of file modbus_server.h.

MODBUS_SERVER_STACK_SIZE

#define MODBUS_SERVER_STACK_SIZE   650

Definition at line 61 of file modbus_server.h.

MODBUS_SERVER_SUPPORT

#define MODBUS_SERVER_SUPPORT   ENABLED

Definition at line 40 of file modbus_server.h.

MODBUS_SERVER_TICK_INTERVAL

#define MODBUS_SERVER_TICK_INTERVAL   1000

Definition at line 87 of file modbus_server.h.

MODBUS_SERVER_TIMEOUT

#define MODBUS_SERVER_TIMEOUT   60000

Definition at line 80 of file modbus_server.h.

MODBUS_SERVER_TLS_RX_BUFFER_SIZE

#define MODBUS_SERVER_TLS_RX_BUFFER_SIZE   2048

Definition at line 101 of file modbus_server.h.

MODBUS_SERVER_TLS_SUPPORT

#define MODBUS_SERVER_TLS_SUPPORT   DISABLED

Definition at line 47 of file modbus_server.h.

MODBUS_SERVER_TLS_TX_BUFFER_SIZE

#define MODBUS_SERVER_TLS_TX_BUFFER_SIZE   2048

Definition at line 94 of file modbus_server.h.

ModbusClientConnection

#define ModbusClientConnection   struct _ModbusClientConnection

Definition at line 131 of file modbus_server.h.

ModbusServerContext

#define ModbusServerContext   struct _ModbusServerContext

Definition at line 127 of file modbus_server.h.

Typedef Documentation

ModbusServerCloseCallback

typedef void(* ModbusServerCloseCallback) (ModbusClientConnection *connection)

TCP connection close callback function.

Definition at line 167 of file modbus_server.h.

ModbusServerLockCallback

typedef void(* ModbusServerLockCallback) (void)

Lock Modbus table callback function.

Definition at line 187 of file modbus_server.h.

ModbusServerOpenCallback

typedef error_t(* ModbusServerOpenCallback) (ModbusClientConnection *connection, IpAddr clientIpAddr, uint16_t clientPort)

TCP connection open callback function.

Definition at line 159 of file modbus_server.h.

ModbusServerProcessPduCallback

typedef error_t(* ModbusServerProcessPduCallback) (const uint8_t *request, size_t requestLen, uint8_t *response, size_t *responseLen)

PDU processing callback function.

Definition at line 233 of file modbus_server.h.

ModbusServerReadCoilCallback

typedef error_t(* ModbusServerReadCoilCallback) (const char_t *role, uint16_t address, bool_t *state)

Get coil state callback function.

Definition at line 201 of file modbus_server.h.

ModbusServerReadRegCallback

typedef error_t(* ModbusServerReadRegCallback) (const char_t *role, uint16_t address, uint16_t *value)

Get register value callback function.

Definition at line 217 of file modbus_server.h.

ModbusServerTickCallback

typedef void(* ModbusServerTickCallback) (ModbusServerContext *context)

Tick callback function.

Definition at line 241 of file modbus_server.h.

ModbusServerTlsInitCallback

typedef error_t(* ModbusServerTlsInitCallback) (ModbusClientConnection *connection, TlsContext *tlsContext)

TLS initialization callback function.

Definition at line 177 of file modbus_server.h.

ModbusServerUnlockCallback

typedef void(* ModbusServerUnlockCallback) (void)

Unlock Modbus table callback function.

Definition at line 194 of file modbus_server.h.

ModbusServerWriteCoilCallback

typedef error_t(* ModbusServerWriteCoilCallback) (const char_t *role, uint16_t address, bool_t state, bool_t commit)

Set coil state callback function.

Definition at line 209 of file modbus_server.h.

ModbusServerWriteRegCallback

typedef error_t(* ModbusServerWriteRegCallback) (const char_t *role, uint16_t address, uint16_t value, bool_t commit)

Set register value callback function.

Definition at line 225 of file modbus_server.h.

Enumeration Type Documentation

ModbusConnectionState

enum ModbusConnectionState

Modbus/TCP connection state.

Enumerator
MODBUS_CONNECTION_STATE_CLOSED
MODBUS_CONNECTION_STATE_CONNECT_TLS
MODBUS_CONNECTION_STATE_RECEIVE
MODBUS_CONNECTION_STATE_SEND
MODBUS_CONNECTION_STATE_SHUTDOWN_TLS
MODBUS_CONNECTION_STATE_SHUTDOWN_TX
MODBUS_CONNECTION_STATE_SHUTDOWN_RX

Definition at line 143 of file modbus_server.h.

Function Documentation

modbusServerDeinit()

void modbusServerDeinit

(

ModbusServerContext *

context

)

Release Modbus/TCP server context.

Parameters

[in]

context

Pointer to the Modbus/TCP server context

Definition at line 420 of file modbus_server.c.

modbusServerGetDefaultSettings()

void modbusServerGetDefaultSettings

(

ModbusServerSettings *

settings

)

Initialize settings with default values.

Parameters

[out]

settings

Structure that contains Modbus/TCP server settings

Definition at line 49 of file modbus_server.c.

modbusServerInit()

error_t modbusServerInit	(	ModbusServerContext *	context,
		const ModbusServerSettings *	settings
	)

Initialize Modbus/TCP server context.

Parameters

[in]	context	Pointer to the Modbus/TCP server context
[in]	settings	Modbus/TCP server specific settings

Returns

Error code

Definition at line 108 of file modbus_server.c.

modbusServerStart()

error_t modbusServerStart

(

ModbusServerContext *

context

)

Start Modbus/TCP server.

Parameters

[in]

context

Pointer to the Modbus/TCP server context

Returns

Error code

Definition at line 167 of file modbus_server.c.

modbusServerStop()

error_t modbusServerStop

(

ModbusServerContext *

context

)

Stop Modbus/TCP server.

Parameters

[in]

context

Pointer to the Modbus/TCP server context

Returns

Error code

Definition at line 261 of file modbus_server.c.

modbusServerTask()

void modbusServerTask

(

ModbusServerContext *

context

)

Modbus/TCP server task.

Parameters

[in]

context

Pointer to the Modbus/TCP server context

Definition at line 314 of file modbus_server.c.