/*
$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,*hh<CR><LF>
<1> UTC Time of position fix, hhmmss format
<2> Status, A = Valid position, V = NAV receiver warning
<3> Latitude,ddmm.mmm format (leading zeros will be transmitted)
<4> Latitude hemisphere, N or S
<5> Longitude,dddmm.mmm format (leading zeros will be transmitted)
<6> Longitude hemisphere, E or W
<7> Speed over ground, 0.0 to 999.9 knots
<8> Course over ground 000.0 to 359.9 degrees, true
(leading zeros will be transmitted)
<9> UTC date of position fix, ddmmyy format
<10> Magnetic variation, 000.0 to 180.0 degrees
(leading zeros will be transmitted)
<11> Magnetic variation direction, E or W
(westerly variation adds to true course)
*/
static bool
FormatGPRMC(char *buffer, size_t buffer_size, const MoreData &info)
{
char lat_buffer[20];
char long_buffer[20];
const GeoPoint location = info.location_available
? info.location
: GeoPoint::Zero();
FormatLatitude(lat_buffer, sizeof(lat_buffer), location.latitude);
FormatLongitude(long_buffer, sizeof(long_buffer), location.longitude);
const BrokenDateTime now = info.time_available &&
info.date_time_utc.IsDatePlausible()
? info.date_time_utc
: BrokenDateTime::NowUTC();
snprintf(buffer, buffer_size,
"GPRMC,%02u%02u%02u,%c,%s,%s,%05.1f,%05.1f,%02u%02u%02u,,",
now.hour, now.minute, now.second,
info.location.IsValid() ? 'A' : 'V',
lat_buffer,
long_buffer,
(double)Units::ToUserUnit(info.ground_speed, Unit::KNOTS),
(double)info.track.Degrees(),
now.day, now.month, now.year % 100);
return true;
}
bool
FormatLatitude(Angle latitude, TCHAR *buffer, size_t size)
{
return FormatLatitude(latitude, buffer, size, user_coordinate_format);
}
