analogy_device.h

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/*
 * Copyright (C) 2012 University of Bristol, UK
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef ANALOGY_DEVICE_H
#define ANALOGY_DEVICE_H

#include <daq.h>
#include <plugin.h>
#include <string>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <rtdm/analogy.h>

class AnalogyDevice : public DAQ::Device
{

public:
 AnalogyDevice(a4l_desc_t *,std::string,IO::channel_t *,size_t);
 ~AnalogyDevice(void);

 size_t getChannelCount(DAQ::type_t) const;
 bool getChannelActive(DAQ::type_t,DAQ::index_t) const;
 int setChannelActive(DAQ::type_t,DAQ::index_t,bool);

 size_t getAnalogRangeCount(DAQ::type_t,DAQ::index_t) const;
 size_t getAnalogReferenceCount(DAQ::type_t,DAQ::index_t) const;
 size_t getAnalogUnitsCount(DAQ::type_t,DAQ::index_t) const;
 size_t getAnalogDownsample(DAQ::type_t,DAQ::index_t) const;
 std::string getAnalogRangeString(DAQ::type_t,DAQ::index_t,DAQ::index_t) const;
 std::string getAnalogReferenceString(DAQ::type_t,DAQ::index_t,DAQ::index_t) const;
 std::string getAnalogUnitsString(DAQ::type_t,DAQ::index_t,DAQ::index_t) const;
 double getAnalogGain(DAQ::type_t,DAQ::index_t) const;
 double getAnalogZeroOffset(DAQ::type_t,DAQ::index_t) const;
 DAQ::index_t getAnalogRange(DAQ::type_t,DAQ::index_t) const;
 DAQ::index_t getAnalogReference(DAQ::type_t,DAQ::index_t) const;
 DAQ::index_t getAnalogUnits(DAQ::type_t,DAQ::index_t) const;
 DAQ::index_t getAnalogOffsetUnits(DAQ::type_t,DAQ::index_t) const;
 int setAnalogGain(DAQ::type_t,DAQ::index_t,double);
 int setAnalogZeroOffset(DAQ::type_t,DAQ::index_t,double);
 int setAnalogRange(DAQ::type_t,DAQ::index_t,DAQ::index_t);
 int setAnalogReference(DAQ::type_t,DAQ::index_t,DAQ::index_t);
 int setAnalogUnits(DAQ::type_t,DAQ::index_t,DAQ::index_t);
 int setAnalogOffsetUnits(DAQ::type_t,DAQ::index_t,DAQ::index_t);
 int setAnalogDownsample(DAQ::type_t, DAQ::index_t, size_t);
 int setAnalogCounter(DAQ::type_t, DAQ::index_t);
 void setAnalogConversion(DAQ::type_t,DAQ::index_t) {}; // Placeholder
 int setAnalogCalibrationValue(DAQ::type_t,DAQ::index_t,double);
 double getAnalogCalibrationValue(DAQ::type_t,DAQ::index_t) const;
 // TODO: Finish defining the functions below for AnalogyDevice class
 int setAnalogCalibrationActive(DAQ::type_t,DAQ::index_t,bool) {return 0;};
 bool getAnalogCalibrationActive(DAQ::type_t,DAQ::index_t) const {return false;};
 bool getAnalogCalibrationState(DAQ::type_t,DAQ::index_t) const {return false;};

 DAQ::direction_t getDigitalDirection(DAQ::index_t) const;
 int setDigitalDirection(DAQ::index_t,DAQ::direction_t);

 void read(void);
 void write(void);

protected:
 virtual void doLoad(const Settings::Object::State &);
 virtual void doSave(Settings::Object::State &) const;

private:
 bool analog_exists(DAQ::type_t,DAQ::index_t) const;

 struct analog_channel_t
 {
 double gain;
 DAQ::index_t range;
 DAQ::index_t reference;
 DAQ::index_t units;
 double conv;
 double offset;
 double zerooffset;
 lsampl_t maxdata;
 DAQ::index_t offsetunits;
 size_t downsample;
 size_t counter;
 bool calibrationActive;
 double calOffset;
 };

 struct digital_channel_t
 {
 DAQ::direction_t direction;
 int previous_value;
 };

 struct channel_t
 {
 bool active;
 union
 {
 analog_channel_t analog;
 digital_channel_t digital;
 };
 };

 struct subdevice_t
 {
 int id;
 DAQ::index_t active;
 DAQ::index_t count;
 channel_t *chan;
 };

 std::string deviceName;
 subdevice_t subdevice[3];
 a4l_desc_t dsc;
};

#endif /* ANALOGY_DEVICE_H */