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PAXCAN.h

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00001 /*******************************************************************************
00002  *
00003  * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
00004  * All rights reserved.
00005  *
00006  *    Redistribution and use in source and binary forms, with or without
00007  *    modification, are permitted provided that the following conditions
00008  *    are met:
00009  *
00010  *    * Redistributions of source code must retain the above copyright
00011  *      notice, this list of conditions and the following disclaimer.
00012  *
00013  *    * Redistributions in binary form must reproduce the above copyright
00014  *      notice, this list of conditions and the following disclaimer in
00015  *      the documentation and/or other materials provided with the
00016  *      distribution.
00017  *
00018  *    * Neither the name of the copyright holders nor the names of
00019  *      contributors may be used to endorse or promote products derived
00020  *      from this software without specific prior written permission.
00021  *
00022  *
00023  *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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00025  *    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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00029  *    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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00036  * $Id$
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00038  ******************************************************************************/
00039 
00040 #ifndef __PAXCAN_h__
00041 #define __PAXCAN_h__
00042 
00043 #include "object/SynchronizedBoundedBuffer.h"
00044 
00045 namespace device {
00046     namespace nic {
00047         namespace CAN {
00048 
00057             template <class Driver>
00058             class PAXCAN : public Driver {
00059                 public:
00060 
00061                     PAXCAN() : sbb(1000) {}
00062 
00064                     void init() {
00065                         Driver::init();
00066                     }
00067 
00076                     bool receive(typename Driver::MOB* mob) {
00077                         if (sbb.is_not_empty()) {
00078                             sbb.pop_back(mob);
00079                             return true;
00080                         } else {
00081                             return false;
00082                         }
00083                     }
00084 
00090                     void receive_blocking(typename Driver::MOB *mob) {
00091                         sbb.pop_back(mob);
00092                     }
00093 
00098                     void transmit(typename Driver::MOB &mob) {
00099                         Driver::write(mob);
00100                     }
00101 
00102                 private:
00104                     object::SynchronizedBoundedBuffer<typename Driver::MOB >  sbb;
00105 
00106                 protected:
00114                     bool interrupt_condition () {
00115                         typename Driver::MOB mob;
00116                         if (Driver::read(mob) == true ) {
00117                             sbb.push_front(mob);
00118                             return true;
00119                         }
00120                         return false;
00121                     }
00122             };
00123 
00124         } /* namespace CAN */
00125     } /* namespace nic */
00126 } /* namespace device */
00127 
00128 #endif
00129