/**
* Prosesses NMEA GPGSA sentences
* \param[in] Buffer for parsed nmea GPGSA sentence
*/
void NMEAParser::nmeaProcessGPGSA(char* packet)
{
// start parsing just after "GPGSA,"
// attempt to reject empty packets right away
if(packet[6]==',' && packet[7]==',')
return;
if(!nmeaChecksum(packet)) {
// checksum not valid
return;
}
nmeaTerminateAtChecksum(packet);
QString nmeaString( packet );
QStringList tokenslist = nmeaString.split(",");
// M=Manual, forced to operate in 2D or 3D
// A=Automatic, 3D/2D
QString fixmodeValue = tokenslist.at(1);
if (fixmodeValue == "A") {
emit fixmode(QString("Auto"));
} else if (fixmodeValue == "B") {
emit fixmode(QString("Manual"));
}
// Mode: 1=Fix not available, 2=2D, 3=3D
int fixtypeValue = tokenslist.at(2).toInt();
if (fixtypeValue == 1) {
emit fixtype(QString("NoFix"));
} else if (fixtypeValue == 2) {
emit fixtype(QString("Fix2D"));
} else if (fixtypeValue == 3) {
emit fixtype(QString("Fix3D"));
}
// 3-14 = IDs of SVs used in position fix (null for unused fields)
QList<int> svList;
for(int pos = 0; pos < 12;pos ++) {
QString sv = tokenslist.at(3+pos);
if(!sv.isEmpty()) {
svList.append(sv.toInt());
}
}
emit fixSVs(svList);
// 15 = PDOP
// 16 = HDOP
// 17 = VDOP
GpsData.PDOP = tokenslist.at(15).toDouble();
GpsData.HDOP = tokenslist.at(16).toDouble();
GpsData.VDOP = tokenslist.at(17).toDouble();
emit dop(GpsData.HDOP, GpsData.VDOP, GpsData.PDOP);
}
FILE *RC_fopen(const SEXP fn, const char *mode, const Rboolean expand)
{
wchar_t wmode[10];
if(fn == NA_STRING) return NULL;
mbstowcs(wmode, fixmode(mode), 10);
return _wfopen(filenameToWchar(fn, expand), wmode);
}
FILE *R_fopen(const char *filename, const char *mode)
{
return(filename ? fopen(filename, fixmode(mode)) : NULL );
}
