void
AutoQNH::Process(const NMEAInfo &basic, DerivedInfo &calculated,
const ComputerSettings &settings_computer, const Waypoints &way_points)
{
if (!calculated.flight.on_ground // must be on ground
|| IsFinished() // only do it once
|| !basic.gps.real // never in replay mode / simulator
|| !basic.location_available // Reject if no valid GPS fix
|| !basic.static_pressure_available // Reject if no pressure
|| settings_computer.pressure_available // Reject if QNH already known
) {
if (!IsFinished())
Reset(); // restart if havent performed
return;
}
if (!IsFinished())
countdown_autoqnh--;
if (!countdown_autoqnh) {
if (CalculateQNH(basic, calculated, way_points))
countdown_autoqnh = UINT_MAX; // disable after performing once
else
Reset();
}
}
bool
AutoQNH::CalculateQNH(const NMEAInfo &basic, DerivedInfo &calculated,
const Waypoints &way_points)
{
const Waypoint *next_wp;
next_wp = way_points.LookupLocation(basic.location, fixed(1000));
if (next_wp && next_wp->IsAirport())
CalculateQNH(basic, calculated, next_wp->altitude);
else if (calculated.terrain_valid)
CalculateQNH(basic, calculated, calculated.terrain_altitude);
else
return false;
return true;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/// Parses LXWP0 sentence.
///
/// @param d device descriptor
/// @param sentence received NMEA sentence
/// @param info GPS info to be updated
///
/// @retval true if the sentence has been parsed
///
//static
bool DevLXMiniMap::LXWP0(PDeviceDescriptor_t d, const TCHAR* sentence, NMEA_INFO* info)
{
// $LXWP0,logger_stored, airspeed, airaltitude,
// v1[0],v1[1],v1[2],v1[3],v1[4],v1[5], hdg, windspeed*CS<CR><LF>
//
// 0 loger_stored : [Y|N] (not used in LX1600)
// 1 IAS [km/h] ----> Condor uses TAS!
// 2 baroaltitude [m]
// 3-8 vario values [m/s] (last 6 measurements in last second)
// 9 heading of plane (not used in LX1600)
// 10 windcourse [deg] (not used in LX1600)
// 11 windspeed [km/h] (not used in LX1600)
//
// e.g.:
// $LXWP0,Y,222.3,1665.5,1.71,,,,,,239,174,10.1
TICKER = GetTickCount();
double alt, airspeed;
if (ParToDouble(sentence, 1, &airspeed))
{
airspeed /= TOKPH;
info->TrueAirspeed = airspeed;
info->AirspeedAvailable = TRUE;
}
if (ParToDouble(sentence, 2, &alt))
{
info->IndicatedAirspeed = airspeed / AirDensityRatio(alt);
if (d == pDevPrimaryBaroSource)
{
UpdateQNH(CalculateQNH(alt, alt + AltOffset));
UpdateBaroSource(info, 0, d, alt + AltOffset);
/* if(FirstCheckBaroAlt)
{
FirstCheckBaroAlt = false;
InputEvents::eventSetup(_T("Basic"));
}*/
}
}
if (ParToDouble(sentence, 3, &info->Vario))
info->VarioAvailable = TRUE;
if (ParToDouble(sentence, 10, &info->ExternalWindDirection) &&
ParToDouble(sentence, 11, &info->ExternalWindSpeed))
info->ExternalWindAvailable = TRUE;
TriggerVarioUpdate();
return(true);
} // LXWP0()
