How to get NMEA sentences out of GPS device?

[joergpauly]

Hi, all,

how can I get the raw NMEA data out of a GPS device?
QGeoPositionInfo doesn't provide it...

Regards
Joerg

[JKSH]

Hi,

You could subclass "QNmeaPositionInfoSource":http://doc.qt.io/qt-5/qnmeapositioninfosource.html and reimplement parsePosInfoFromNmeaData() to capture the raw NMEA sentence:

@
bool MySource::parsePosInfoFromNmeaData(const char * data, int size, QGeoPositionInfo * posInfo, bool * hasFix) override
{
// Store the raw sentence for later retrieval
this->sentence += QString(data, size);

// Call the base implementation to process the sentence
return QNmeaPositionInfoSource::parsePosInfoFromNmeaData(data, size, posInfo, hasFix);

}
@

[joergpauly]

Hello,

that sounds very interesting.

But as QNmeaPositionInfoSource requires a QIODevice now the goal was to find out what device file is emitting the GPS' data...

Sorry, I'm absolutely rookie to android development.

Regards
Joerg

[JKSH]

Hmm... reading through the documentation again, I might have misunderstood how QNmeaPositionInfoSource works.

I have to admit I don't have experience with the Qt Positiioning classes; try asking at the "Interest mailing list":http://lists.qt-project.org/mailman/listinfo/interest where you can find Qt engineers (you'll need to subscribe first)