void CAccelerometerSensorSym::start()
{
TSensrvProperty dataFormatProperty;
TInt err;
CSensorBackendSym::start();
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdChannelDataFormat, ESensrvSingleProperty, dataFormatProperty));
if(err == KErrNone)
{
TSensrvProperty scaleRangeProperty;
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdScaledRange, KSensrvItemIndexNone, scaleRangeProperty));
if(err == KErrNone)
{
if(scaleRangeProperty.GetArrayIndex() == ESensrvSingleProperty)
{
if(scaleRangeProperty.PropertyType() == ESensrvIntProperty)
{
scaleRangeProperty.GetMaxValue(iScaleRange);
}
else if(scaleRangeProperty.PropertyType() == ESensrvRealProperty)
{
TReal realScale;
scaleRangeProperty.GetMaxValue(realScale);
iScaleRange = realScale;
}
}
else if(scaleRangeProperty.GetArrayIndex() == ESensrvArrayPropertyInfo)
{
TInt index;
if(scaleRangeProperty.PropertyType() == ESensrvIntProperty)
{
scaleRangeProperty.GetValue(index);
}
else if(scaleRangeProperty.PropertyType() == ESensrvRealProperty)
{
TReal realIndex;
scaleRangeProperty.GetValue(realIndex);
index = realIndex;
}
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdScaledRange, KSensrvItemIndexNone, index, scaleRangeProperty));
if(err == KErrNone)
{
if(scaleRangeProperty.PropertyType() == ESensrvIntProperty)
{
scaleRangeProperty.GetMaxValue(iScaleRange);
}
else if(scaleRangeProperty.PropertyType() == ESensrvRealProperty)
{
TReal realScaleRange;
scaleRangeProperty.GetMaxValue(realScaleRange);
iScaleRange = realScaleRange;
}
}
}
}
}
}
/**
* Overriding this method in rotation sensor to hard code value of
* mesurement range from -180 to 180 as Qt wants
* Symbian provides measurement range from 0 to 359
*/
void CRotationSensorSym::GetMeasurementrangeAndAccuracy()
{
TReal accuracy = 0;
TSensrvProperty accuracyProperty;
TRAPD(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdChannelAccuracy, ESensrvSingleProperty, accuracyProperty));
if(err == KErrNone)
{
accuracyProperty.GetValue(accuracy);
}
// Hard coding values -180 and 180 as Qt expects y and z axis
// values range from -180 to 180.
addOutputRange(KMinimumRange, KMaximumRange, accuracy);
}
/**
* Second phase constructor
* Initialize the backend resources
*/
void CAccelerometerSensorSym::ConstructL()
{
//Initialize the backend resources
InitializeL();
TInt err;
TSensrvProperty unitProperty;
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdChannelUnit, ESensrvSingleProperty, unitProperty));
if(err == KErrNone)
{
unitProperty.GetValue(iUnit);
}
}
/**
* HandlePropertyChange is called from backend, to indicate a change in property
*/
void CMagnetometerSensorSym::HandlePropertyChange(CSensrvChannel &/*aChannel*/, const TSensrvProperty &aChangedProperty)
{
if(aChangedProperty.GetPropertyId() != KSensrvPropCalibrationLevel)
{
// Do nothing, if calibration property has not changed
return;
}
TInt calibrationlevel;
aChangedProperty.GetValue(calibrationlevel);
// As Qt requires calibration level in qreal but symbian provides in enum
// It has been agreed with DS Team that the following mechanism will be
// used till discussions with qt mobility are complete
iCalibrationLevel = (1.0/3.0) * calibrationlevel;
}
void CMagnetometer::PropertyChanged(CSensrvChannel& aChannel, const TSensrvProperty& aChangedProperty)
{
TSensrvChannelInfo info = aChannel.GetChannelInfo();
if (info.iChannelType == KSensrvChannelTypeIdMagnetometerXYZAxisData &&
aChangedProperty.GetPropertyId() == KSensrvPropCalibrationLevel)
{
TInt calibration = 0;
aChangedProperty.GetValue(calibration);
iCalibration = calibration == 0? ENone :
calibration == 1? ELow :
calibration == 2? EModerate :
calibration == 3? EHigh : ENone;
}
}
void CMagnetometer::ConstructL()
{
CSensrvChannelFinder* sensorChannelFinder = CSensrvChannelFinder::NewLC();
RSensrvChannelInfoList channelInfoList;
CleanupClosePushL(channelInfoList);
TSensrvChannelInfo mySearchConditions;
mySearchConditions.iChannelType = KSensrvChannelTypeIdMagnetometerXYZAxisData;
sensorChannelFinder->FindChannelsL(channelInfoList, mySearchConditions);
TSensrvChannelInfo channelInfo;
if (channelInfoList.Count() > 0)
channelInfo = channelInfoList[0];
else
User::Leave(KErrNotFound);
CleanupStack::PopAndDestroy(&channelInfoList);
CleanupStack::PopAndDestroy(sensorChannelFinder);
iSensorChannel = CSensrvChannel::NewL(channelInfo);
iSensorChannel->OpenChannelL();
// Get current calibration value
TSensrvProperty property;
iSensorChannel->GetPropertyL(KSensrvPropCalibrationLevel, KSensrvItemIndexNone, property);
TInt calibration = 0;
property.GetValue(calibration);
iCalibration = calibration == 0? ENone :
calibration == 1? ELow :
calibration == 2? EModerate :
calibration == 3? EHigh : ENone;
iSensorChannel->SetPropertyListenerL(this);
}
// ----------------------------------------------------------------------------------
// CSSYChannel::SetPropertyL()
// ----------------------------------------------------------------------------------
//
void CSSYChannel::SetPropertyL( const TSensrvChannelId aChannelId,
const TSensrvProperty& aProperty )
{
SSY_TRACE_IN();
SSY_TRACE( EExtended, "ORIENTATIONSSY:ChannelId %d", iChannelInfo.iChannelId );
if ( ChannelId() != aChannelId )
{
SSY_TRACE( EError, "ORIENTATIONSSY:ERROR: SetPropertyL wrong channelId!" );
User::Leave( KErrArgument );
}
TBool valueChanged( ETrue );
RSensrvChannelList affectedChannels;
TInt valueInt( 0 );
// try first common sensor properties
TInt ret = iSensorProperties->SetProperty( aProperty, affectedChannels );
if ( ret == KErrNotFound )
{
// then try the channel properties
ret = iChannelProperties->SetProperty( aProperty, affectedChannels );
}
if ( ret != KErrNone && ret != KErrAlreadyExists )
{
SSY_TRACE( EError, "ORIENTATIONSSY:ERROR: Property is not supported or it's readonly: 0x%x ", aProperty.GetPropertyId() );
User::Leave( KErrNotSupported );
}
if ( ret == KErrAlreadyExists )
{
// client tried to set the same value that the property already has, lets just return without doing anything
// but informing the "change" via the callback
valueChanged = EFalse;
}
// do something if the value was really changed
if ( valueChanged )
{
aProperty.GetValue( valueInt );
// These are ReadOnly values, cannot change these
if ( ( aProperty.GetPropertyId() == KSensrvPropIdDataRate ) ||
( aProperty.GetPropertyId() == KSensrvPropIdAvailability ) ||
( aProperty.GetPropertyId() == KSensrvPropIdMeasureRange ) ||
( aProperty.GetPropertyId() == KSensrvPropIdChannelDataFormat ) ||
( aProperty.GetPropertyId() == KSensrvPropIdChannelAccuracy ) )
{
SSY_TRACE( EError, "ORIENTATIONSSY:ERROR: Setting the property is not supported: 0x%x ", aProperty.GetPropertyId() );
User::Leave( KErrNotSupported );
}
}
// we call the callback function to inform that property was changed, even if it was not actually changed
iCallback->PropertyChanged( iChannelInfo.iChannelId, affectedChannels, aProperty );
affectedChannels.Reset();
SSY_TRACE_OUT();
}
/**
* start is overridden to allow retrieving initial calibration property before
* and to set the required value type flags
*/
void CMagnetometerSensorSym::start()
{
if(sensor())
{
// Initialize the values
iReading.setX(0);
iReading.setY(0);
iReading.setZ(0);
// Set the required type of values
QVariant v = sensor()->property("returnGeoValues");
iReturnGeoValues = (v.isValid() && v.toBool()); // if the property isn't set it's false
}
TInt err;
// get current property value for calibration and set it to reading
TSensrvProperty calibration;
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropCalibrationLevel, ESensrvSingleProperty, calibration));
// If error in getting the calibration level, continue to start the sensor
// as it is not a fatal error
if ( err == KErrNone )
{
TInt calibrationVal;
calibration.GetValue(calibrationVal);
iCalibrationLevel = calibrationVal * (1.0/3.0);
}
// Call backend start
CSensorBackendSym::start();
TSensrvProperty dataFormatProperty;
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdChannelDataFormat, ESensrvSingleProperty, dataFormatProperty));
if(err == KErrNone)
{
TInt dataFormat;
dataFormatProperty.GetValue(dataFormat);
if(dataFormat == ESensrvChannelDataFormatScaled)
{
TSensrvProperty scaleRangeProperty;
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdScaledRange, KSensrvItemIndexNone, scaleRangeProperty));
if(err == KErrNone)
{
if(scaleRangeProperty.GetArrayIndex() == ESensrvSingleProperty)
{
if(scaleRangeProperty.PropertyType() == ESensrvIntProperty)
{
scaleRangeProperty.GetMaxValue(iScaleRange);
}
else if(scaleRangeProperty.PropertyType() == ESensrvRealProperty)
{
TReal realScale;
scaleRangeProperty.GetMaxValue(realScale);
iScaleRange = realScale;
}
}
else if(scaleRangeProperty.GetArrayIndex() == ESensrvArrayPropertyInfo)
{
TInt index;
if(scaleRangeProperty.PropertyType() == ESensrvIntProperty)
{
scaleRangeProperty.GetValue(index);
}
else if(scaleRangeProperty.PropertyType() == ESensrvRealProperty)
{
TReal realIndex;
scaleRangeProperty.GetValue(realIndex);
index = realIndex;
}
TRAP(err, iBackendData.iSensorChannel->GetPropertyL(KSensrvPropIdScaledRange, KSensrvItemIndexNone, index, scaleRangeProperty));
if(err == KErrNone)
{
if(scaleRangeProperty.PropertyType() == ESensrvIntProperty)
{
scaleRangeProperty.GetMaxValue(iScaleRange);
}
else if(scaleRangeProperty.PropertyType() == ESensrvRealProperty)
{
TReal realScaleRange;
scaleRangeProperty.GetMaxValue(realScaleRange);
iScaleRange = realScaleRange;
}
}
}
}
}
}
}