SerialPort.h

/***************************************************************************
 * \file SerialPort.h
 *
 * \brief Serial port connection manager.
 *
 * \author DA
 * \copyright Copyright (c) 2015-2021 CyberRadio Solutions, Inc.
 *
 */

#ifndef INCLUDED_LIBCYBERRADIO_SERIALPORT_H_
#define INCLUDED_LIBCYBERRADIO_SERIALPORT_H_

#include "LibCyberRadio/Common/Debuggable.h"
#include <string>
#include <termios.h>


namespace LibCyberRadio
{

    class SerialPort : public Debuggable
    {
        public:
            SerialPort(
                    const std::string& device,
                    int baudrate = 115200,
                    char parity = 'N',
                    int databits = 8,
                    int stopbits = 1,
                    bool xonxoff = false,
                    bool rtscts = false,
                    bool debug = false
                );
            ~SerialPort();
            SerialPort(const SerialPort& other);
            SerialPort& operator=(const SerialPort& other);
            bool open();
            bool close();
            std::string read();
            bool write(const std::string& data);
            int getBaudRate() const;
            bool setBaudRate(int baudrate);
            char getParity() const;
            bool setParity(char parity);
            int getDataBits() const;
            bool setDataBits(int databits);
            int getStopBits() const;
            bool setStopBits(int stopbits);
            bool usesXonXoffFlowControl() const;
            bool enableXonXoffFlowControl(bool enabled);
            bool usesRtsCtsFlowControl() const;
            bool enableRtsCtsFlowControl(bool enabled);
            std::string getLastError() const;


        protected:
            // Serial device name
            std::string _device;
            // Baud rate
            int _baudrate;
            // Parity setting
            char _parity;
            // Data bits
            int _databits;
            // Stop bits
            int _stopbits;
            // Use XON/XOFF software flow control
            bool _useXonXoff;
            // Use RTS/CTS hardware flow control
            bool _useRtsCts;
            // Use DTS/DTR hardware flow control
            bool _useDtsDtr;
            // File descriptor
            int _fd;
            // Last error message
            std::string _lastError;
            // Receive buffer
            char* _recvBuf;
            // Receive buffer size
            int _recvBufSize;
            // Terminal settings
            struct termios _settings;
    };

} // namespace LibCyberRadio




#endif /* INCLUDED_LIBCYBERRADIO_SERIALPORT_H_ */