ComPort485F.h

/*
 * Copyright (c) 2015 Pavel Vainerman.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, version 2.1.
 *
 * 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
 * Lesser General Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
// --------------------------------------------------------------------------
#ifndef COMPORT_485F_H_
#define COMPORT_485F_H_
// --------------------------------------------------------------------------
#include <queue>
#include "ComPort.h"
#include "PassiveTimer.h"
// --------------------------------------------------------------------------
namespace uniset
{
class ComPort485F:
    public ComPort
{
    public:

        ComPort485F( const std::string& comDevice, int gpio_num, bool tmit_ctrl = false );

        virtual void sendByte( unsigned char x ) override;
        virtual void setTimeout( timeout_t timeout ) override;
        virtual size_t sendBlock( unsigned char* msg, size_t len ) override;

        virtual void cleanupChannel() override;
        virtual void reopen() override;

    protected:

        virtual unsigned char m_receiveByte( bool wait ) override;
        void save2queue(unsigned char* msg, size_t len, size_t bnum );
        bool remove_echo( unsigned char tb[], size_t len );
        void m_read( timeout_t tmsec );

        unsigned char tbuf[ComPort::BufSize];

        std::queue<unsigned char> wq; 
        std::queue<unsigned char> rq; 
        int gpio_num;
        bool tmit_ctrl_on;
        PassiveTimer ptRecv;
        timeout_t tout_msec = { 2000 };
};
// -------------------------------------------------------------------------
} // end of uniset namespace
// --------------------------------------------------------------------------
#endif // COMPORT_485F_H_
// --------------------------------------------------------------------------