Double-Tapping sensor not working on 5800 Xpress

[abolfoooud]

Hi,

Have been trying to have this working for a while but i failed.

I have implemented the Sensor Framework in my application to listen to several sensor channels (accelerometer, rotation) and i am getting all working fine except for the multi-tapping.

When i tap the phone from any direction i always get value 3 for the iDirection member of TSensrvTappingData, which is none of the predefined direction constant:

const TUint8 KSensrvAccelerometerDirectionXplus = 0x01;
const TUint8 KSensrvAccelerometerDirectionXminus = 0x02;
const TUint8 KSensrvAccelerometerDirectionYplus = 0x04;
const TUint8 KSensrvAccelerometerDirectionYminus = 0x08;
const TUint8 KSensrvAccelerometerDirectionZplus = 0x10;
const TUint8 KSensrvAccelerometerDirectionZminus = 0x20;

I read on http://wiki.forum.nokia.com/index.php/Category:Sensor that this sensor channel is supported on the 5800 phone.


This is my callback function that received the tapping data from the sensor:

 void CTappingDataListener::DataReceived( CSensrvChannel& aChannel, 
                               TInt /*aCount*/, 
                               TInt /*aDataLost*/ )
    {
	/**
	* 7. Sensor data is received.
	* - aChannel parameter tells which channel sent the data.
	*/
	TSensrvChannelInfo info = aChannel.GetChannelInfo();
	/*TSensrvTappingData::KDataTypeId )*/ 
	if ( info.iChannelType == KSensrvChannelTypeIdAccelerometerDoubleTappingData )
	    {
		/**
		* 8. The data from the channel is received to a package.
		* - The data is received through GetData method.
		*/
		TSensrvTappingData aTapData; 
		TPckg<TSensrvTappingData> tapPackage( aTapData );
	    aChannel.GetData( tapPackage );
	    
	    /**
		* As the data is now available for the application the compass can now
		* be drawn. The data is forwarded to the draw function.
		*/
	    iSensorEngine->TapData( aTapData.iTimeStamp, aTapData.iDirection );
	    }
	}

Has any one experience such a problem?

Regs
AF

[abolfoooud]

no one has any idea about this?!

[ltomuta]

Not all sensors are unfortunately properly calibrated for each devices so not all will work. As I remember the double tap sensor has this problem on 5800 and there is no way to solve the problem.

[abolfoooud]

Thanks alot for the useful info.
Will look at implementing the double tapping feature myself then.
AF

[t3chNo]

hi abolfoooud. i'm getting the value 3 as direction too. But according to sensrvtappingsensor.h file reference at library, if plus or minus information for axis is not known, both flags are set. 3 means in this situation KSensrvAccelerometerDirectionXplus | KSensrvAccelerometerDirectionXminus.