[SailfishDevel] QGeoSatelliteInfoSource in Sailfish

[christopher.lamb at thurweb.ch]

Hi Aaron

Adding that information proved easier than I had expected: it just  
took a few minutes during breakfast!


void SatInfoSource::onSatsInViewUpdated(const QList<QGeoSatelliteInfo>  
&list) {
     int newInView = list.count();
     if (newInView != _satsInView) {
         qDebug() << "satInfoSource.cpp: onSatsinViewUpdated: " <<  
QString::number(newInView, 'g', 2);
         for (int i = 0; i < newInView; i++ ) {
             qDebug() << "satsInView: id: "  <<  
list[i].satelliteIdentifier() << ", system: " <<  
list[i].satelliteSystem() << ", strength: " + list[i].signalStrength();
         }
         _satsInView = newInView;
         emit satellitesInViewChanged(newInView);
     }
}

The for loop is new, and gives the following output.

[D] SatInfoSource::onSatsInViewUpdated:59 - satInfoSource.cpp:  
onSatsinViewUpdated:  "23"
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  1 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  3 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  6 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  11 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  14 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  17 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  19 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  20 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  22 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  27 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  28 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  32 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  74 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  66 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  82 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  73 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  80 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  65 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  88 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  87 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  81 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  67 ,  
system:  0 , strength:
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  72 ,  
system:  0 , strength:

Interestingly neither system nor strength give expected output.

Sometimes I get garbled output like:

[D] SatInfoSource::onSatsInViewUpdated:59 - satInfoSource.cpp:  
onSatsinViewUpdated:  "21"
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  1 , system:  0
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  3 ,  
system:  0 Updates requested, but no satellite info source available
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  6 ,  
system:  0 ates requested, but no satellite info source available
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  11 ,  
system:  0 Stop Updates requested, but no satellite info source  
available
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  14 ,  
system:  0  Updates requested, but no satellite info source available
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  19 , system:  0
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  22 ,  
system:  0  requested, but no satellite info source available
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  27 ,  
system:  0 ates requested, but no satellite info source available
[D] SatInfoSource::onSatsInViewUpdated:61 - satsInView: id:  28 ,  
system:  0 Stop Updates requested, but no satellite info source  
available


Grüsse

Chris



Zitat von christopher.lamb at thurweb.ch:

> Aaron
>
> I will have to write some more code to spit out the sat ids to the  
> debug console. At the moment my SatInfoSource declarative plugin is  
> ultra-simple, it just exposes the numbers of Sats InView and InUse,  
> nothing more.
>
> At the moment my hypothesis is based on the circumstantial evidence  
> that new newer devices (Jolla and Galaxy) show roughly double the  
> number of older GPS only devices (N9, Garmin).
>
> Cheers
>
> Chris
>
> Zitat von "Aaron McCarthy" <aaron.mccarthy at jolla.com>:
>
>> Hi,
>>
>> On Sat, 1 Feb 2014 10:37:59 christopher.lamb at thurweb.ch wrote:
>>> A slight correction to my previous post
>>>
>>> I think that the high number of Sats in View shown on the Jolla means
>>> that it is showing both GPS and Glonass Satellites, and thus gives a
>>> figure almost double of that I was used to from the Nokia N9 and
>>> classic GPS devices.
>>>
>>> Comparing various devices I get the following readings:
>>>
>>> Sats in use / Sats in View / Device / Technology
>>>
>>> 6 / 9 / Nokia N9 / GPS only
>>>
>>> 5 / 20 / Jolla / GPS and Glonass
>>>
>>> 15 / 21 / Samusung Galaxy Note 3 / GPS and Glonass
>>>
>>> 9 / Garmin GPSmap 60CSx / GPS only
>>>
>>> So the Sats in View figure of the Jolla is plausible.
>>>
>>> Interestingly the Jolla's Sats In Use figure - at least in the tests
>>> on my terrace this morning - is consistently lower than that displayed
>>> by the other devices. I show 15 for the Galaxy above, but have seen
>>> readings of 18 and 19.
>>
>> What are the satellite identification numbers for these satellites.  
>> Satellites
>> 65 to 88 are GLONASS. Others are GPS. Does this match your hypothesis?
>>
>> Cheers,
>>
>> --
>> Aaron McCarthy
>> _______________________________________________
>> SailfishOS.org Devel mailing list
>>
>
>
>
> _______________________________________________
> SailfishOS.org Devel mailing list
>