SerialNL.h

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/*******************************************************************************
 *
 * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
 *                    2010 Thomas Kiebel <kiebel@ivs.cs.uni-magdeburg.de>
 * All rights reserved.
 *
 *    Redistribution and use in source and binary forms, with or without
 *    modification, are permitted provided that the following conditions
 *    are met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the
 *      distribution.
 *
 *    * Neither the name of the copyright holders nor the names of
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 *
 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 *    IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 *    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 *    PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 *    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
 * $Id$
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 ******************************************************************************/
#ifndef __SERIAL_NL_h__
#define __SERIAL_NL_h__

#include <stdio.h>

#include "mw/afp/Config.h"
#include "mw/api/EventChannel.h"
#include "mw/common/NodeID.h"
#include "mw/common/Subject.h"
#include "mw/el/EventLayerCallBack.h"
#include "mw/nl/DistinctNL.h"
#include "mw/nl/Packet.h"

#include "debug.h"

namespace famouso {
    namespace mw {
        namespace nl {
            template< class DRV >
            class SerialNL : public DistinctNL {
                public:
                    typedef SerialNL<DRV> type;
                    typedef famouso::mw::Subject SNN;
                    typedef Packet<SNN> Packet_t;
                    typedef afp::Disable AFP_Config;
                    typedef typename DRV::mob_t mob_t;

                    struct info {
                        enum {
                            payload  = DRV::cfgInfo::payload - sizeof( SNN )
                        };
                    };
                protected:
                    DRV driver;
                    mob_t rmob;
                public:
                    SerialNL()  {}
                    ~SerialNL() {}

                    void init() {
                        TRACE_FUNCTION;

                        driver.onReceive.template bind<type, &type::rx_interrupt>(this);
                        driver.init();
                    }

                    void bind(const Subject &s, SNN &snn) {
                        TRACE_FUNCTION;
                        snn = s;
                    }

                    void deliver(const Packet_t& p) {
                        TRACE_FUNCTION;

                        mob_t smob;
                        SNN *subject = reinterpret_cast<SNN*>( smob.payload );
                        *subject     = p.snn;

                        smob.size = 0;
                        while ( smob.size != p.data_length ) {
                            smob.payload[sizeof( SNN ) + smob.size] = p.data[smob.size];
                            ++smob.size;
                        }
                        smob.size += sizeof( SNN );
                        driver.send( smob );
                    }

                    void fetch(Packet_t& p) {
                        TRACE_FUNCTION;

                        p.snn         = *reinterpret_cast<SNN*>( rmob.payload );
                        p.data        = rmob.payload + sizeof( SNN );
                        p.data_length = rmob.size - sizeof( SNN );
                        p.fragment    = 0;
                    }

                    void rx_interrupt() {
                        TRACE_FUNCTION;

                        driver.recv(rmob);
                        if (rmob.size != 0)
                            famouso::mw::el::IncommingEventFromNL(this);
                    }

                    void tx_interrupt() {
                        TRACE_FUNCTION;
                    }

                    SNN lastPacketSNN() {
                        return *reinterpret_cast<SNN*>( rmob.payload );
                    }
            };
        } // namespace nl
    } // namespace mw
} //namespace famouso

#endif /*__SERIAL_NL_h__*/