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/*
RailControl - Model Railway Control Software
Copyright (c) 2017-2025 by Teddy / Dominik Mahrer - www.railcontrol.org
RailControl 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 3, or (at your option) any
later version.
RailControl 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 RailControl; see the file LICENCE. If not see
<http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mutex>
#include <string>
#include <termios.h>
#include <unistd.h> //close & write;
#include "Logger/Logger.h"
namespace Network
{
class Serial
{
public:
Serial() = delete;
Serial(const Serial&) = delete;
Serial& operator=(const Serial&) = delete;
inline Serial(Logger::Logger* logger,
const std::string& tty,
const unsigned int dataSpeed, // from termio (ex. B9600)
const unsigned char dataBits,
const char parity,
const unsigned char stopBits,
const bool hardwareFlowControl = false)
: logger(logger),
tty(tty),
dataSpeed(dataSpeed),
dataBits(dataBits),
parity(parity),
stopBits(stopBits),
hardwareFlowControl(hardwareFlowControl),
fileHandle(-1)
{
Init();
}
~Serial()
{
Close();
}
inline void ReInit()
{
Close();
Init();
}
inline bool IsConnected() const
{
return fileHandle != -1;
}
inline void ClearBuffers()
{
tcflush(fileHandle, TCIOFLUSH);
}
inline ssize_t Send(const std::string& data)
{
return Send(reinterpret_cast<const unsigned char*>(data.c_str()), data.length());
}
inline ssize_t Send(const unsigned char data)
{
return Send(&data, 1);
}
inline ssize_t Send(const unsigned char* data, const size_t size)
{
if (!IsConnected())
{
return 0;
}
std::lock_guard<std::mutex> Guard(fileHandleMutex);
return write(fileHandle, data, size);
}
bool Receive(std::string& data, const size_t maxData = 1024, const unsigned int timeoutS = 0, const unsigned int timeoutUS = 100000);
ssize_t Receive(unsigned char* data, const size_t maxData, const unsigned int timeoutS = 0, const unsigned int timeoutUS = 100000);
bool ReceiveExact(std::string& data, const size_t length, const unsigned int timeoutS = 0, const unsigned int timeoutUS = 100000);
ssize_t ReceiveExact(unsigned char* data, const size_t length, const unsigned int timeoutS = 0, const unsigned int timeoutUS = 100000);
private:
void Init();
void Close();
Logger::Logger* logger;
const std::string tty;
const unsigned int dataSpeed;
const unsigned char dataBits;
const char parity;
const unsigned char stopBits;
const bool hardwareFlowControl;
int fileHandle;
mutable std::mutex fileHandleMutex;
};
}
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