comedi_internal.h

/***************************************************************************
  tag: Peter Soetens  Wed Jan 18 14:11:40 CET 2006  comedi_internal.h 

                        comedi_internal.h -  description
                           -------------------
    begin                : Wed January 18 2006
    copyright            : (C) 2006 Peter Soetens
    email                : peter.soetens@mech.kuleuven.be
 
 ***************************************************************************
 *   This library 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; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library 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 Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 59 Temple Place,                                    *
 *   Suite 330, Boston, MA  02111-1307  USA                                *
 *                                                                         *
 ***************************************************************************/
 
 

// Some info about this hack :
// For LXRT, we should include <rtai_comedi.h>
// but this file is horribly broken, thus
// we use the signatures of the linux/comedilib.h
// functions but _link_ against libkcomedilib_lxrt.so

#ifndef _COMEDI_INTERNAL_HPP
#define _COMEDI_INTERNAL_HPP

#include <rtt/RTT.hpp>
#ifdef OROPKG_OS_LXRT
    #define __KERNEL__
    extern "C"
    {
#include <linux/comedilib.h>
    }
    #undef __KERNEL__
#else
// userspace gnu/linux:
    #include <comedilib.h>
#endif

#include <rtt/Logger.hpp>

namespace OCL
{
    using namespace RTT;

    class ComediDevice::DeviceInfo
    {
    public:
        DeviceInfo( unsigned int dm )
            : devminor(dm), it(0)
        {
            char devString[ 15 ];
            snprintf( devString, 15, "/dev/comedi%d", devminor );

            it = comedi_open( devString );

            if ( it == 0 )
                log(Error) <<"Could not open "<< devString << ": no such device or invalid rights." << endlog();
            else
                log(Info) << "Opened " << devString << ": success." << endlog();


        }

        ~DeviceInfo() {
            if ( it )
                if ( comedi_close(it) < 0 )
                    log(Error) << "Device /dev/comedi"<<devminor<<" : close failed" << endlog();
        }

        unsigned int devminor;
        comedi_t *it;
    };


      

}
#endif

---