Uio48Sensor.h

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// -*- 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
 **
 ** 2021, 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_UIO48SENSOR_H
#define NIDAS_DYNLD_UIO48SENSOR_H
 
#include <nidas/Config.h> 
#include <nidas/core/DSMSensor.h>
#include <nidas/core/UnixIODevice.h>
#include <nidas/core/LooperClient.h>
 
#ifdef HAVE_UIO48_H
#include <uio48.h>
#include <nidas/util/BitArray.h>
#endif
 
 
namespace nidas { namespace dynld {
 
using namespace nidas::core;
 
#ifdef HAVE_UIO48_H
 
class Uio48 {
public:
 
    Uio48(int npins = 48);
    ~Uio48();
 
    int getFd() const { return _fd; }
 
    void open(const std::string& device);
 
    void close();
 
    int getNumPins() const
    {
        return _npins;
    }
 
    void clearPins(const nidas::util::BitArray& which);
 
    void setPins(const nidas::util::BitArray& which);
 
    void setPins(const nidas::util::BitArray& which,
                    const nidas::util::BitArray& val);
 
    nidas::util::BitArray getPins();
 
    const std::string& getName() const { return _devName; }
 
private:
    std::string _devName;
    int _fd;
    int _npins;
 
    Uio48(const Uio48&);
 
    Uio48& operator=(const Uio48&);
 
};
#endif
 
class Uio48Sensor : public DSMSensor {
public:
 
    Uio48Sensor();
    ~Uio48Sensor();
 
    void open(int flags);
 
    IODevice* buildIODevice();
 
    SampleScanner* buildSampleScanner();
 
    void init();
 
    void validate();
 
    bool process(const Sample* insamp,std::list<const Sample*>& results) throw();
 
#ifdef HAVE_UIO48_H
 
    void close();
 
    class Uio48IODevice: public UnixIODevice {
    public:
        Uio48IODevice(): UnixIODevice() {}
        // pipe is opened by sensor open method.
        void open(int) {}
 
        void setFd(int val) { _fd = val; }
    };
 
    class Uio48LooperClient : public LooperClient {
    public:
        Uio48LooperClient(const DSMSensor& sensor, Uio48& uio, int pipefd);
 
        void looperNotify();
 
        void setFd(int val) { _pipefd = val; }
    private:
        const DSMSensor& _sensor;
        Uio48& _uio;
        int _pipefd;
        std::vector<unsigned char> _buffer;
 
        Uio48LooperClient(const Uio48LooperClient&);
 
        Uio48LooperClient& operator=(const Uio48LooperClient&);
 
    };
 
#endif
 
private:
 
    int _nvars;
 
    SampleTag* _stag;
 
#ifdef HAVE_UIO48_H
 
    Uio48 _uio48;
 
    int _pipefds[2];
 
    Uio48IODevice *_iodevice;
 
    Uio48LooperClient _looperClient;
#endif
 
    Uio48Sensor(const Uio48Sensor&);
 
    Uio48Sensor& operator=(const Uio48Sensor&);
};
 
}}  // namespace nidas namespace dynld
 
#endif // NIDAS_DYNLD_UIO48SENSOR_H