static void setHomeLocation(GPSPositionData * gpsData)
{
HomeLocationData home;
HomeLocationGet(&home);
GPSTimeData gps;
GPSTimeGet(&gps);
if (gps.Year >= 2000)
{
// Store LLA
home.Latitude = gpsData->Latitude;
home.Longitude = gpsData->Longitude;
home.Altitude = gpsData->Altitude + gpsData->GeoidSeparation;
// Compute home ECEF coordinates and the rotation matrix into NED
double LLA[3] = { ((double)home.Latitude) / 10e6, ((double)home.Longitude) / 10e6, ((double)home.Altitude) };
double ECEF[3];
RneFromLLA(LLA, (float (*)[3])home.RNE);
LLA2ECEF(LLA, ECEF);
// TODO: Currently UAVTalk only supports float but these conversions use double
// need to find out if they require that precision and if so extend UAVTAlk
home.ECEF[0] = (int32_t) (ECEF[0] * 100);
home.ECEF[1] = (int32_t) (ECEF[1] * 100);
home.ECEF[2] = (int32_t) (ECEF[2] * 100);
// Compute magnetic flux direction at home location
if (WMM_GetMagVector(LLA[0], LLA[1], LLA[2], gps.Month, gps.Day, gps.Year, &home.Be[0]) >= 0)
{ // calculations appeared to go OK
home.Set = HOMELOCATION_SET_TRUE;
HomeLocationSet(&home);
}
}
}
static void setHomeLocation(GPSPositionData * gpsData)
{
HomeLocationData home;
HomeLocationGet(&home);
GPSTimeData gps;
GPSTimeGet(&gps);
if (gps.Year >= 2000)
{
// Store LLA
home.Latitude = gpsData->Latitude;
home.Longitude = gpsData->Longitude;
home.Altitude = gpsData->Altitude; // Altitude referenced to mean sea level geoid (likely EGM 1996, but no guarantees)
// Compute home ECEF coordinates and the rotation matrix into NED
double LLA[3] = { ((double)home.Latitude) / 10e6, ((double)home.Longitude) / 10e6, ((double)home.Altitude) };
// Compute magnetic flux direction at home location
if (WMM_GetMagVector(LLA[0], LLA[1], LLA[2], gps.Month, gps.Day, gps.Year, &home.Be[0]) >= 0)
{ // calculations appeared to go OK
// Compute local acceleration due to gravity. Vehicles that span a very large
// range of altitude (say, weather balloons) may need to update this during the
// flight.
home.Set = HOMELOCATION_SET_TRUE;
HomeLocationSet(&home);
}
}
}
