EpicsDouble Class Reference

#include <epicsdouble.h>

Inheritance diagram for EpicsDouble:

Public Slots
void	changeValue (dbr_gr_double val)
void	caput (double val)

Signals
void	valueChanged (double val)
void	valueGraphicChanged (dbr_gr_double val)
Signals inherited from EpicsObject
void	valueChanged ()

Public Member Functions
	EpicsDouble (QString pvName, QObject *parent=0, int debug=0)
virtual	~EpicsDouble ()
void	changeConnection (QString pv)
void	connected ()
double	value ()
Public Member Functions inherited from EpicsObject
	EpicsObject (QString pvName, QObject *parent=0, int debug=0)
virtual	~EpicsObject ()
void	changeConnection (QString pv)
int	count ()
QString	pvName ()
QString	toolTip ()
virtual void	disconnected ()
chid	channelID ()
int	debug ()
void	setDebug (int dbg)
void	settle (double t)
void	ca_pend_io (double t)

Private Member Functions
virtual caEventCallBackFunc *	get_event_handler ()

Static Private Member Functions
static void	event_handler (struct event_handler_args arg)

Private Attributes
dbr_gr_double	m_Value

Additional Inherited Members
Static Public Attributes inherited from EpicsObject
static QMutex	m_Mutex
Protected Attributes inherited from EpicsObject
chid	m_ChannelID
evid	m_EventID
bool	m_HasEventHandler
int	m_Debug

Detailed Description

Definition at line 9 of file epicsdouble.h.

Constructor & Destructor Documentation

EpicsDouble::EpicsDouble	(	QString	pvName,
		QObject *	parent = 0,
		int	debug = 0
	)

Definition at line 6 of file epicsdouble.cpp.

References EpicsObject::debug(), and m_Value.

  : EpicsObject(pvName, parent, dbg)
{
  if (debug()) {
    printf("EpicsDouble::EpicsDouble(%s)\n", qPrintable(pvName));
  }

  m_Value.value = NAN;
}

EpicsDouble::~EpicsDouble ( )

virtual

Definition at line 16 of file epicsdouble.cpp.

{
}

Member Function Documentation

void EpicsDouble::caput ( double  val )

slot

Definition at line 104 of file epicsdouble.cpp.

References EpicsObject::ca_pend_io(), and EpicsObject::channelID().

Referenced by EpicsAmplifier::setGain(), EpicsPowerSupply::setLimit(), EpicsA2DConverter::setLowerLevelDiscrim(), EpicsMCA::setPresetLiveTime(), EpicsMCA::setPresetRealTime(), EpicsA2DConverter::setUpperLevelDiscrim(), and EpicsPowerSupply::setVoltage().

{
  ca_put(DBR_DOUBLE, channelID(), &val);
  ca_pend_io(0.5);
}

void EpicsDouble::changeConnection

(

QString

pv

)

void EpicsDouble::changeValue ( dbr_gr_double  val )

slot

Definition at line 63 of file epicsdouble.cpp.

References EpicsObject::channelID(), EpicsObject::debug(), EpicsObject::m_Mutex, m_Value, EpicsObject::valueChanged(), and valueGraphicChanged().

Referenced by event_handler().

{
  if (debug()) {
    printf("ca_put(%d,%p,%g)\n", DBR_DOUBLE, channelID(), newval);
  }

//  ca_put(DBR_DOUBLE, channelID(), &newval);

  QMutexLocker lock(&m_Mutex);

  int valchanged=0;
  int grpchanged=0;

  if (m_Value.value != newval.value) {
    valchanged=1;
  }

  if ((m_Value.status != newval.status) ||
      (m_Value.severity != newval.severity) ||
      (m_Value.precision != newval.precision) ||
      (m_Value.upper_disp_limit != newval.upper_disp_limit) ||
      (m_Value.lower_disp_limit != newval.lower_disp_limit) ||
      (m_Value.upper_warning_limit != newval.upper_warning_limit) ||
      (m_Value.lower_warning_limit != newval.lower_warning_limit) ||
      (m_Value.upper_alarm_limit != newval.upper_alarm_limit) ||
      (m_Value.lower_alarm_limit != newval.lower_alarm_limit) ||
      (strcmp(m_Value.units,newval.units) != 0)) {
    grpchanged = 1;
  }

  m_Value = newval;

  if (valchanged) {
    emit valueChanged(m_Value.value);
  }

  if (grpchanged) {
    emit valueGraphicChanged(m_Value);
  }
}

void EpicsDouble::connected ( )

virtual

Reimplemented from EpicsObject.

Definition at line 20 of file epicsdouble.cpp.

References EpicsObject::debug(), get_event_handler(), EpicsObject::m_ChannelID, EpicsObject::m_EventID, EpicsObject::m_HasEventHandler, and EpicsObject::pvName().

{
  if (!m_HasEventHandler) {
    SEVCHK(ca_create_subscription(DBR_GR_DOUBLE, 0, m_ChannelID, DBE_VALUE|DBE_ALARM, 
                                  get_event_handler(), this, &m_EventID), NULL);

    m_HasEventHandler = 1;

    if (debug()) {
      printf("Channel %s connected\n", qPrintable(pvName()));
    }
  }
}

void EpicsDouble::event_handler ( struct event_handler_args  arg )

staticprivate

Definition at line 34 of file epicsdouble.cpp.

References changeValue(), and EpicsObject::debug().

Referenced by get_event_handler().

{
  union db_access_val *pb = (union db_access_val *) args.dbr;

  dbr_gr_double res;
  memset(&res, 0xff, sizeof(dbr_gr_double));

  switch (args.type) {
  case DBR_GR_DOUBLE:
    res=pb->gdblval;
    break;
  default:
    printf("data type %ld not supported\n", args.type);
  }

  EpicsDouble *r = ((EpicsDouble*) args.usr);

  if (r && r->debug()) {
    printf("%s Epics Double Event Handler called %ld = %g\n", ca_name(args.chid), args.type, res.value);
  }

  ((EpicsDouble*) args.usr) -> changeValue(res);
}

caEventCallBackFunc * EpicsDouble::get_event_handler ( )

privatevirtual

Implements EpicsObject.

Definition at line 58 of file epicsdouble.cpp.

References event_handler().

Referenced by connected().

{
  return &EpicsDouble::event_handler;
}

double EpicsDouble::value

(

)

Definition at line 110 of file epicsdouble.cpp.

References EpicsObject::m_Mutex, and m_Value.

Referenced by EpicsDoubleDisplay::EpicsDoubleDisplay(), EpicsDoubleLineEdit::EpicsDoubleLineEdit(), and BM12Controller::saveEnergyWindows().

{
  QMutexLocker lock(&m_Mutex);

  return m_Value.value;
}

void EpicsDouble::valueChanged ( double  val )

signal

void EpicsDouble::valueGraphicChanged ( dbr_gr_double  val )

signal

Referenced by changeValue().

Member Data Documentation

dbr_gr_double EpicsDouble::m_Value

private

Definition at line 35 of file epicsdouble.h.

Referenced by changeValue(), EpicsDouble(), and value().

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The documentation for this class was generated from the following files:

• epicsdouble.h
• epicsdouble.cpp