/**
* Parse a "$D" sentence.
*
* Example: "$D,+0,100554,+25,18,+31,,0,-356,+25,+11,115,96*6A"
*/
static bool
LeonardoParseD(NMEAInputLine &line, NMEA_INFO &info)
{
fixed value;
// 0 = vario [dm/s]
if (line.read_checked(value))
info.ProvideTotalEnergyVario(value / 10);
// 1 = air pressure [Pa]
if (line.skip() == 0)
/* short "$C" sentence ends after airspeed */
return true;
// 2 = netto vario [dm/s]
if (line.read_checked(value))
info.ProvideNettoVario(value / 10);
// 3 = airspeed [km/h]
/* XXX is that TAS or IAS? */
if (line.read_checked(value))
info.ProvideTrueAirspeed(Units::ToSysUnit(value, unKiloMeterPerHour));
// 4 = temperature [deg C]
fixed oat;
info.TemperatureAvailable = line.read_checked(oat);
if (info.TemperatureAvailable)
info.OutsideAirTemperature = Units::ToSysUnit(oat, unGradCelcius);
// 5 = compass [degrees]
/* XXX unsupported by XCSoar */
// 6 = optimal speed [km/h]
/* XXX unsupported by XCSoar */
// 7 = equivalent MacCready [cm/s]
/* XXX unsupported by XCSoar */
// 8 = wind speed [km/h]
/* not used here, the "$C" record repeats it together with the
direction */
return true;
}
/**
* Parse a "$C" sentence.
*
* Example: "$C,+2025,-7,+18,+25,+29,122,314,314,0,-356,+25,45,T*3D"
*/
static bool
LeonardoParseC(NMEAInputLine &line, NMEA_INFO &info)
{
fixed value;
// 0 = altitude [m]
if (line.read_checked(value))
info.ProvideBaroAltitudeTrue(value);
// 1 = vario [dm/s]
if (line.read_checked(value))
info.ProvideTotalEnergyVario(value / 10);
// 2 = airspeed [km/h]
/* XXX is that TAS or IAS? */
if (line.read_checked(value))
info.ProvideTrueAirspeed(Units::ToSysUnit(value, unKiloMeterPerHour));
// 3 = netto vario [dm/s]
if (line.read_checked(value))
info.ProvideNettoVario(value / 10);
else
/* short "$C" sentence ends after airspeed */
return true;
// 4 = temperature [deg C]
fixed oat;
info.TemperatureAvailable = line.read_checked(oat);
if (info.TemperatureAvailable)
info.OutsideAirTemperature = Units::ToSysUnit(oat, unGradCelcius);
// 10 = wind speed [km/h]
// 11 = wind direction [degrees]
SpeedVector wind;
if (ReadSpeedVector(line, wind))
info.ProvideExternalWind(wind);
return true;
}
/**
* Parse a "$FLYSEN" sentence.
*
* @see http://www.flytec.ch/public/Special%20NMEA%20sentence.pdf
*/
static bool
FlytecParseFLYSEN(NMEAInputLine &line, NMEA_INFO &info)
{
fixed value;
// Time(hhmmss), 6 Digits
line.skip();
// Latitude(ddmm.mmm), 8 Digits incl. decimal
// N (or S), 1 Digit
line.skip(2);
// Longitude(dddmm.mmm), 9 Digits inc. decimal
// E (or W), 1 Digit
line.skip(2);
// Track (xxx Deg), 3 Digits
// Speed over Ground (xxxxx cm/s) 5 Digits
// GPS altitude (xxxxx meter), 5 Digits
line.skip(3);
// Validity of 3 D fix A or V, 1 Digit
char validity = line.read_first_char();
if (validity != 'A' && validity != 'V') {
validity = line.read_first_char();
if (validity != 'A' && validity != 'V')
return false;
}
// Satellites in Use (0 to 12), 2 Digits
line.skip();
// Raw pressure (xxxxxx Pa), 6 Digits
if (line.read_checked(value))
info.ProvideStaticPressure(value / 100);
// Baro Altitude (xxxxx meter), 5 Digits (-xxxx to xxxxx) (Based on 1013.25hPa)
if (line.read_checked(value))
info.ProvidePressureAltitude(value);
// Variometer (xxxx cm/s), 4 or 5 Digits (-9999 to 9999)
if (line.read_checked(value))
info.ProvideTotalEnergyVario(value / 100);
// true airspeed (xxxxx cm/s), 5 Digits (0 to 99999cm/s = 3600km/h)
if (line.read_checked(value))
info.ProvideTrueAirspeed(value / 100);
// Airspeed source P or V, 1 Digit P= pitot, V = Vane wheel
// Temp. PCB (xxx °C), 3 Digits
// Temp. Balloon Envelope (xxx °C), 3 Digits
// Battery Capacity Bank 1 (0 to 100%) 3 Digits
// Battery Capacity Bank 2 (0 to 100%) 3 Digits
// Dist. to WP (xxxxxx m), 6 Digits (Max 200000m)
// Bearing (xxx Deg), 3 Digits
// Speed to fly1 (MC0 xxxxx cm/s), 5 Digits
// Speed to fly2 (McC. xxxxx cm/s) 5 Digits
// Keypress Code (Experimental empty to 99) 2 Digits
return true;
}