C++ (Cpp) NMEAInputLine::rest Examples

Example #1

File: Parser.cpp Project: aharrison24/XCSoar

// PDTSM,duration_ms,"free text"
static bool
PDTSM(NMEAInputLine &line, gcc_unused NMEAInfo &info)
{
  /*
  int duration = (int)strtol(String, NULL, 10);
  */
  line.skip();

  const char *message = line.rest();
#ifdef _UNICODE
  TCHAR buffer[strlen(message)];
  if (MultiByteToWideChar(CP_ACP, 0, message, -1,
                          buffer, ARRAY_SIZE(buffer)) <= 0)
    return false;
#else
  const char *buffer = message;
#endif

  // todo duration handling
  Message::AddMessage(_T("VEGA:"), buffer);

  return true;
}

Example #2

File: Flytec.cpp Project: mobotics/XCSoar

/**
 * Parse a "$FLYSEN" sentence.
 *
 * @see http://www.flytec.ch/public/Special%20NMEA%20sentence.pdf
 */
static bool
FlytecParseFLYSEN(NMEAInputLine &line, NMEAInfo &info)
{
  // Detect firmware/sentence version
  //
  // V or A in field 9  -> 3.31-
  // V or A in field 10 -> 3.32+

  NMEAInputLine line_copy(line.rest());

  line_copy.skip(8);

  bool has_date_field = false;
  char validity = line_copy.read_first_char();
  if (validity != 'A' && validity != 'V') {
    validity = line_copy.read_first_char();
    if (validity != 'A' && validity != 'V')
      return false;

    has_date_field = true;
  }

  //  Date(ddmmyy),   6 Digits (only in firmware version 3.32+)
  if (has_date_field)
    line.skip();

  //  Time(hhmmss),   6 Digits
  line.skip();

  if (validity == 'V') {
    // In case of V (void=not valid) GPS data should not be used.
    // GPS altitude, position and speed should be ignored.
    line.skip(7);

  } else {
    //  Latitude(ddmm.mmm),   8 Digits incl. decimal
    //  N (or S),   1 Digit
    //  Longitude(dddmm.mmm),   9 Digits inc. decimal
    //  E (or W),   1 Digit
    GeoPoint location;
    if (NMEAParser::ReadGeoPoint(line, location)) {
      info.location = location;
      info.location_available.Update(info.clock);
    }

    //  Track (xxx Deg),   3 Digits
    fixed track;
    if (line.read_checked(track)) {
      info.track = Angle::Degrees(track);
      info.track_available.Update(info.clock);
    }

    //  Speed over Ground (xxxxx cm/s)        5 Digits
    fixed ground_speed;
    if (line.read_checked(ground_speed)) {
      info.ground_speed = ground_speed / 100;
      info.ground_speed_available.Update(info.clock);
    }

    //  GPS altitude (xxxxx meter),           5 Digits
    fixed gps_altitude;
    if (line.read_checked(gps_altitude)) {
      info.gps_altitude = gps_altitude;
      info.gps_altitude_available.Update(info.clock);
    }
  }

  //  Validity of 3 D fix A or V,           1 Digit
  line.skip();

  //  Satellites in Use (0 to 12),          2 Digits
  unsigned satellites_used;
  if (line.read_checked(satellites_used)) {
    info.gps.satellites_used = satellites_used;
    info.gps.satellites_used_available.Update(info.clock);
  }

  //  Raw pressure (xxxxxx Pa),  6 Digits
  fixed pressure;
  if (line.read_checked(pressure))
    info.ProvideStaticPressure(AtmosphericPressure::Pascal(pressure));

  //  Baro Altitude (xxxxx meter),          5 Digits (-xxxx to xxxxx) (Based on 1013.25hPa)
  fixed baro_altitude;
  if (line.read_checked(baro_altitude))
    info.ProvidePressureAltitude(baro_altitude);

  //  Variometer (xxxx cm/s),   4 or 5 Digits (-9999 to 9999)
  fixed vario;
  if (line.read_checked(vario))
    info.ProvideTotalEnergyVario(vario / 100);

  //  True airspeed (xxxxx cm/s),           5 Digits (0 to 99999cm/s = 3600km/h)
  fixed tas;
  if (line.read_checked(tas))
    info.ProvideTrueAirspeed(tas / 100);

  //  Airspeed source P or V,   1 Digit P= pitot, V = Vane wheel
  line.skip();

  //  Temp. PCB (xxx �C),   3 Digits
  fixed pcb_temperature;
  bool pcb_temperature_available = line.read_checked(pcb_temperature);

  //  Temp. Balloon Envelope (xxx �C),      3 Digits
  fixed balloon_temperature;
  bool balloon_temperature_available = line.read_checked(balloon_temperature);

  if (balloon_temperature_available) {
    info.temperature = CelsiusToKelvin(balloon_temperature);
    info.temperature_available = true;
  } else if (pcb_temperature_available) {
    info.temperature = CelsiusToKelvin(pcb_temperature);
    info.temperature_available = true;
  }

  //  Battery Capacity Bank 1 (0 to 100%)   3 Digits
  fixed battery_level_1;
  bool battery_level_1_available = line.read_checked(battery_level_1);

  //  Battery Capacity Bank 2 (0 to 100%)   3 Digits
  fixed battery_level_2;
  bool battery_level_2_available = line.read_checked(battery_level_2);

  if (battery_level_1_available) {
    if (battery_level_2_available)
      info.battery_level = (battery_level_1 + battery_level_2) / 2;
    else
      info.battery_level = battery_level_1;

    info.battery_level_available.Update(info.clock);
  } else if (battery_level_2_available) {
    info.battery_level = battery_level_2;
    info.battery_level_available.Update(info.clock);
  }

  //  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;
}