NewLC - Playing with the N95 - The LBS API - Comments

Re: Playing with the N95 - The LBS API

nlvraghavendra — Mon, 30 Mar 2009 09:34:46 +0200

Hi
I changed the code in the following manner..

/*
============================================================================
 Name        : CActivePositioner.cpp
 Author      : MarCo
 Version     :
 Copyright   : Just Try It
 Description : CCActivePositioner implementation
============================================================================
*/
#include "FirstGpsAppView.h"
#include "CActivePositioner.h"

TInt myVar;
// CONSTANTS

//Second
//const TInt KSecond = 1000000;

//Update interval
//const TInt KUpdateInterval = KSecond;

//Update time out
//const TInt KUpdateTimeOut = 15*KSecond;

//MaxAge
//const TInt KMaxAge = 500000;

//The name of the requestor
_LIT(KRequestor,"First GPS Application");

CCActivePositioner::CCActivePositioner() : CActive(EPriorityStandard)        // Standard priority
{
         CActiveScheduler::Add( this );
}

void CCActivePositioner::ConstructL(CFirstGpsAppView *aView)
{
        
        
        
        
        //Lbs Stuff
          // Connect to the position server
    TInt error = iPosServer.Connect( );
    
    // Open subsession to the position server
    error = iPositioner.Open(iPosServer);
    
    // Set position requestor
    error = iPositioner.SetRequestor( CRequestor::ERequestorService ,
         CRequestor::EFormatApplication , KRequestor );
   
   // Set update interval to one second to receive one position data per second
   
  /*  TPositionUpdateOptions upOpt;
    upOpt.SetUpdateInterval(TTimeIntervalMicroSeconds(KUpdateInterval));

    // If position server could not get position
    // In two minutes it will terminate the position request
    upOpt.SetUpdateTimeOut(TTimeIntervalMicroSeconds(KUpdateTimeOut));

    // Positions which have time stamp below KMaxAge can be reused
    upOpt.SetMaxUpdateAge(TTimeIntervalMicroSeconds(KMaxAge));

    // Enables location framework to send partial position data
    upOpt.SetAcceptPartialUpdates(EFalse);
         
       // Set update options
    //error =  iPositioner.SetUpdateOptions( upOpt );
    */
    iView = aView;
    iPositioner.NotifyPositionUpdate(iPositionInfo,iStatus);
        SetActive();
}

CCActivePositioner::~CCActivePositioner()
{
        Cancel(); // Cancel any request, if outstanding
        iPositioner.Close(); // Destroy the RTimer object
        iPosServer.Close();
        
        // Delete instance variables if any
}

void CCActivePositioner::DoCancel()
{
        iPositioner.CancelRequest(EPositionerNotifyPositionUpdate );
}


void CCActivePositioner::RunL()
{
        
         
    switch ( iStatus.Int() )
    {
        // The fix is valid
        case KErrNone:
        // The fix has only partially valid information.
        // It is guaranteed to only have a valid timestamp
        case KPositionPartialUpdate:
            {

            // Pre process the position information
            iView->SetPos(iPositionInfo);
            iView->SetErrorCode(0);
                        break;
            }
        default:
                iView->SetErrorCode(iStatus.Int());
    }
        // Request next position
    if( myVar != 1 )
            {
    iPositioner.NotifyPositionUpdate( iPositionInfo, iStatus );
    myVar = 1;
            }
    else
            CActiveScheduler::Stop();
           // Set this object active
           SetActive();
}

is the above code correct? Need help..

Re: Playing with the N95 - The LBS API

nlvraghavendra — Sun, 29 Mar 2009 15:09:00 +0200

HI
I went through the FirstGps code. I've a doubt as i dont want to get the locations periodically. How to achieve that?
I removed the line SetUpdateOptions(UpOp) and it its not working.
Looking for help..

Regards
NLV

Re: Playing with the N95 - The LBS API

ahmedj — Sat, 07 Mar 2009 10:02:12 +0100

Hi MarCo
Are there any way to know if user cancel the BT GPS selection dialog ?, because in all cases, the dialog showed after calling NotifyPositionUpdate, and when user cancel the dialog, RunL called and iStatus.Int() will give the same error, so is there any way to know if user cancel the dialog?

Thanks,
Ahmed.

Re: Playing with the N95 - The LBS API

vikrant — Mon, 08 Sep 2008 12:03:38 +0200

Hey very nice article..

Although I am a newbie here still coud get the details

thnx

Re: Playing with the N95 - The LBS API

pz1974 — Wed, 16 Jul 2008 23:44:52 +0200

Hi,
I have two newbe's questions:
1.Is it possible to get more raw data from internal GPS via LBS API? Most needed are pseudorange measurements which I want to use to recalculate the position by my application after it gets some correction data from the net.
2. Is the internal GPS module able to read RTCM correction data to recalculate the position to increase the accuracy? If yes, what methods inside LPS API are responsible for it?

Java JSR 179 API do not offer above, so maybe LBS API will do?

Thanks

piter

Re: Playing with the N95 - The LBS API

christian le jalle — Fri, 13 Jun 2008 11:35:21 +0200

Hi ,

RSG file is a header specifying resource identifier that will be created in the epoc32/include directory.
Within CARBIDE it can be found in the following path:
FirstGps/Includes/C:/Symbian/9.2/S60_3rd_FP1/Epoc32/include
This file is generated by the build process.

Christian

Re: Playing with the N95 - The LBS API

gtraballi — Fri, 30 May 2008 05:38:38 +0200

I had a problem here.
When I tried building the project (from FirstGps.zip) appeared an error: "FirstGps.rsg: No such or directory[/Symbian/Carbide/workspace/FirstGps/src/firstgpsappui.cpp:14]", I just started to use S60 SDK 3 FP1 (to nokia n95). Do anyone know exactly whats wrong (besides my terrible english)?
I couldn´t locate this missing file (FirstGps.rsg).

Re: FirstGps N95 error "unable to install" installind FirstGps

marciallus — Mon, 05 May 2008 09:35:18 +0200

When i wrate this tutorial it was just to present the symbian LBS API , It wasn't designed to be use as is in a real program.

For your sis problem, you can check this url : http://www.newlc.com/Why-the-fuck-won-t-my-SIS-file.html

--
MarCo

FirstGps N95 error "unable to install" installind FirstGps sis

christian le jalle — Wed, 30 Apr 2008 18:57:55 +0200

Hi ,

I have signed "fistGps " app with symbiansigned WEB,
after adding capabilities Location and ReadUserData , got a new sis file.
but installation of the signed sis file on N95 failed "unable to install"
work fine on Emulator
I have upgraded my N95firmwrar to the latest release. didn't fixed
Sounds it's coming from my Pkg file ?
I have created one with the following contents:

; Installation file for FirstGps example application
;
;Languages
&EN
;
; UID is the app's UID
;
#{"FirstGps"},(0xE1EF0018 ),2,0,0
;Supports Series 60 v 3.0
[0x101F7961], 0, 0, 0, {"Series60ProductID"}
%{"Forum Nokia Test EN"}
:"Forum Nokia"
;

; Four files to install
;
"$(EPOCROOT)\Epoc32\release\$(PLATFORM)\$(TARGET)\FirstGps.exe"-"!:\sys\bin\FirstGps.exe"
"$(EPOCROOT)\EPOC32\data\Z\resource\apps\FirstGps.rsc"-"!:\resource\apps\FirstGps.rsc"
"$(EPOCROOT)\EPOC32\data\Z\private\10003a3f\apps\FirstGps_reg.RSC"-"!:\private\10003a3f\import\apps\FirstGps_reg.rsc"
"$(EPOCROOT)\Epoc32\data\z\resource\apps\FirstGps.mif" -"!:\resource\apps\FirstGps.mif"

-
Run with no error .
I'm wondering what I'm doing wrong ???

I have also used the FirstGps classes in another application. worked fine on emulator
but crashed on the "live" N95 when calling the GPS function ....

Any help and suggestion will be appreciated
Christian

Re: Playing with the N95 - The LBS API

agamit — Wed, 19 Mar 2008 14:29:21 +0100

thanks for your reply ..ok i will the signing procedure

Re: Playing with the N95 - The LBS API

marciallus — Tue, 11 Mar 2008 09:09:30 +0100

Sorry but I can't help you

You must have a problem with signing your application and there's a lot of information about the Symbian Signed procedure on the Web.

The requested Capabilitie for GPS feature is Location.

--
MarCo

Re: Playing with the N95 - The LBS API

agamit — Tue, 11 Mar 2008 05:38:44 +0100

On March 10th, 2008 agamit said:
Hi ,
wen I tried to install your FirstGPS app with self signed in N-95 I am getting this error message

"required application access not granted"

Please help me regarding the same.

And also I added criteria in FirstGPS app and ran it on simulator but its getting crash so i thought to run it on N-95 but I
am not able to install it

Re: The LBS API are not Nokia

agamit — Mon, 10 Mar 2008 10:33:27 +0100

Hi ,
wen I tried to install your FirstGPS app with self signed in N-95 I am getting this error message

"required application access not granted"

Please help me regarding the same.

And also I added criteria in FirstGPS app and ran it on simulator but its getting crash so i thought to run it on N-95 but I
am not able to install it

Re: Playing with the N95 - The LBS API

marciallus — Tue, 05 Feb 2008 15:57:48 +0100

Hello

If you want to install on your device you can Sign an application for being installed on your phone only so you can have program run on your device, there's a lot of doc on the web about the SymbianSigned process, you can go to SymbianSigned.com to have more informations.

What you can not do easily is signing an applicatio for every phone but that's not what you want I think

--
MarCo

Re: Playing with the N95 - The LBS API

aml_1989 — Tue, 05 Feb 2008 15:49:22 +0100

Hi,

Quick question:

What have you had to do about signing/certifying this program?
I've been told the N95 OS wont install any programs that aren't digitally signed/certified etc.

My N95 is nearly on order, so haven't had a chance to play around with copying programs to / from any devices yet.
The program works fine on the emulator, I just need to wait 'till I have a copy of the real thing in my hands.
Good post tho...

Thanks,
Andy.

P.S. Please reply using words a complete beginner would understand.

Playing with the N95 - The LBS API

marciallus — Sun, 27 May 2007 18:09:38 +0200

So this tutorial will describe a simple App, very simple App, which just get the current location of the phone and write it on the view.