DSC_FreqCounter.h

Go to the documentation of this file.

// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4; -*-
// vim: set shiftwidth=4 softtabstop=4 expandtab:
/*
 ********************************************************************
 ** NIDAS: NCAR In-situ Data Acquistion Software
 **
 ** 2008, Copyright University Corporation for Atmospheric Research
 **
 ** This program is free software; you can redistribute it and/or modify
 ** it under the terms of the GNU General Public License as published by
 ** the Free Software Foundation; either version 2 of the License, or
 ** (at your option) any later version.
 **
 ** 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 General Public License for more details.
 **
 ** The LICENSE.txt file accompanying this software contains
 ** a copy of the GNU General Public License. If it is not found,
 ** write to the Free Software Foundation, Inc.,
 ** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 **
 ********************************************************************
*/
#ifndef NIDAS_DYNLD_DSC_FREQCOUNTER_H
#define NIDAS_DYNLD_DSC_FREQCOUNTER_H
 
#include <nidas/core/DSMSensor.h>
#include <nidas/core/Parameter.h>
#include <nidas/util/EndianConverter.h>
 
namespace nidas { namespace dynld {
 
using namespace nidas::core;
 
class DSC_FreqCounter : public DSMSensor {
 
public:
 
    DSC_FreqCounter();
    ~DSC_FreqCounter();
 
    IODevice* buildIODevice();
 
    SampleScanner* buildSampleScanner();
 
    void open(int flags);
 
    void validate();
 
    void init();
 
    void printStatus(std::ostream& ostr);
 
    double calculatePeriodUsec(const Sample*) const;
 
    double calculatePeriodUsec(unsigned int npulses, unsigned int tics) const;
 
    bool process(const Sample*,std::list<const Sample*>& result)
        throw();
 
    int getSamplePeriodMsec() const
    {
        return _msecPeriod;
    }
 
 
protected:
 
    virtual void readParams(const std::list<const Parameter*>& params);
 
    dsm_sample_id_t _sampleId;
 
    int _nvars;
 
    int _msecPeriod;
 
    int _numPulses;
 
    double _clockRate;
 
    const nidas::util::EndianConverter* _cvtr;
 
private:
 
    DSC_FreqCounter(const DSC_FreqCounter&);
 
    DSC_FreqCounter& operator=(const DSC_FreqCounter&);
 
};
 
}}  // namespace nidas namespace dynld
 
#endif