modbustcp.h
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/*
* Copyright (c) 2022 Peter M. Groen
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include "modbusbase.h"
#include "connectionconfig.h"
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
namespace osdev {
namespace components {
namespace modbus {
using X_SOCKET = int;
using SOCKADDR = struct sockaddr;
using SOCKADDR_IN = struct sockaddr_in;
#define X_ISVALIDSOCKET(s) ((s) >= 0)
#define X_CLOSE_SOCKET(s) close(s)
#define X_ISCONNECTSUCCEED(s) ((s) >= 0)
/*!
* \brief The ModbusTCP class
*/
class ModbusTCP : public ModbusBase
{
public:
/*!
* \brief ModbusTCP
* \param port_configuration
*/
ModbusTCP(const ConnectionConfig &port_configuration);
// Pure virtuals. Override when inherited.
/*!
* \brief Connect
* \return
*/
virtual bool Connect() override;
/*!
* \brief Close
*/
virtual void Close() override;
private: // Methods
/*!
* \brief modbusSend
* \param to_send
* \param length
* \return
*/
virtual ssize_t modbusSend(uint8_t *to_send, size_t length) override;
/*!
* \brief modbusReceive
* \param buffer
* \return
*/
virtual ssize_t modbusReceive(uint8_t *buffer) const override;
private: // Members
uint16_t m_port {};
std::string m_host{};
X_SOCKET m_socket{};
SOCKADDR_IN m_server{};
};
} // End namespace modbus
} // End namespace components
} // End namespace osdev