scalarAlarmSupport.h

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#ifndef SCALARALARMSUPPORT_H
#define SCALARALARMSUPPORT_H


#include <pv/pvDatabase.h>
#include <pv/pvSupport.h>
#include <pv/alarm.h>
#include <pv/pvAlarm.h>
#include <pv/pvStructureCopy.h>

#include <shareLib.h>

namespace epics { namespace pvDatabase {

class ScalarAlarmSupport;
typedef std::tr1::shared_ptr<ScalarAlarmSupport> ScalarAlarmSupportPtr;

class epicsShareClass ScalarAlarmSupport :
    PVSupport
{
public:
    POINTER_DEFINITIONS(ScalarAlarmSupport);
    virtual ~ScalarAlarmSupport();
    virtual bool init(
        epics::pvData::PVFieldPtr const & pvValue,
        epics::pvData::PVStructurePtr const & pvAlarm,
        epics::pvData::PVFieldPtr const & pvSupport);
    virtual bool process();
    virtual void reset();
    static ScalarAlarmSupportPtr create(PVRecordPtr const & pvRecord);
    static epics::pvData::StructureConstPtr scalarAlarmField();
private:

    ScalarAlarmSupport(PVRecordPtr const & pvRecord);
    enum {
        range_Lolo = 0,
        range_Low,
        range_Normal,
        range_High,
        range_Hihi,
        range_Invalid,
        range_Undefined
    } AlarmRange;
    void setAlarm(
        epics::pvData::PVStructurePtr const & pvAlarm,
        int alarmRange);
    PVRecordPtr pvRecord;
    int prevAlarmRange;
    epics::pvData::PVScalarPtr pvValue;
    epics::pvData::PVStructurePtr pvAlarm;
    epics::pvData::PVStructurePtr pvScalarAlarm;
    epics::pvData::PVBooleanPtr pvActive;
    epics::pvData::PVDoublePtr pvLowAlarmLimit;
    epics::pvData::PVDoublePtr pvLowWarningLimit;
    epics::pvData::PVDoublePtr pvHighWarningLimit;
    epics::pvData::PVDoublePtr pvHighAlarmLimit;
    epics::pvData::PVDoublePtr pvHysteresis;
    double requestedValue;
    double currentValue;
    bool isHystersis;
};

}}

#endif  /* SCALARALARMSUPPORT_H */