C++ (Cpp) GGA示例

示例#1

文件： Parser.cpp 项目： ThomasXBMC/XCSoar

bool
NMEAParser::ParseLine(const char *string, NMEAInfo &info)
{
    assert(positive(info.clock));

    if (string[0] != '$')
        return false;

    if (!NMEAChecksum(string))
        return false;

    NMEAInputLine line(string);

    char type[16];
    line.Read(type, 16);

    if (IsAlphaASCII(type[1]) && IsAlphaASCII(type[2])) {
        if (StringIsEqual(type + 3, "GSA"))
            return GSA(line, info);

        if (StringIsEqual(type + 3, "GLL"))
            return GLL(line, info);

        if (StringIsEqual(type + 3, "RMC"))
            return RMC(line, info);

        if (StringIsEqual(type + 3, "GGA"))
            return GGA(line, info);

        if (StringIsEqual(type + 3, "HDM"))
            return HDM(line, info);
    }

    // if (proprietary sentence) ...
    if (type[1] == 'P') {
        // Airspeed and vario sentence
        if (StringIsEqual(type + 1, "PTAS1"))
            return PTAS1(line, info);

        // FLARM sentences
        if (StringIsEqual(type + 1, "PFLAE")) {
            ParsePFLAE(line, info.flarm.error, info.clock);
            return true;
        }

        if (StringIsEqual(type + 1, "PFLAV")) {
            ParsePFLAV(line, info.flarm.version, info.clock);
            return true;
        }

        if (StringIsEqual(type + 1, "PFLAA")) {
            ParsePFLAA(line, info.flarm.traffic, info.clock);
            return true;
        }

        if (StringIsEqual(type + 1, "PFLAU")) {
            ParsePFLAU(line, info.flarm.status, info.clock);
            return true;
        }

        // Garmin altitude sentence
        if (StringIsEqual(type + 1, "PGRMZ"))
            return RMZ(line, info);

        return false;
    }

    return false;
}

示例#2

文件： Parser.cpp 项目： rkalman/LK8000

BOOL NMEAParser::ParseNMEAString_Internal(TCHAR *String, NMEA_INFO *pGPS)
{
  TCHAR ctemp[MAX_NMEA_LEN];
  TCHAR *params[MAX_NMEA_PARAMS];
  size_t n_params;


  n_params = ValidateAndExtract(String, ctemp, MAX_NMEA_LEN, params, MAX_NMEA_PARAMS);
  if (n_params < 1 || params[0][0] != '$')
    return FALSE;
//  if (EnableLogNMEA) 091108 removed LogNMEA and place in calling function
//    LogNMEA(String);

  if(params[0][1] == 'P')
    {
      //Proprietary String

#ifdef DSX
      if(_tcscmp(params[0] + 1,TEXT("PDSXT"))==0)
        {
          return PDSXT(&String[7], params + 1, n_params, pGPS);
        }
#endif 


      if(_tcscmp(params[0] + 1,TEXT("PTAS1"))==0)
        {
          return PTAS1(&String[7], params + 1, n_params, pGPS);
        }

      // FLARM sentences
      if(_tcscmp(params[0] + 1,TEXT("PFLAA"))==0)
        {
          return PFLAA(&String[7], params + 1, n_params, pGPS);
        }

      if(_tcscmp(params[0] + 1,TEXT("PFLAU"))==0)
        {
          return PFLAU(&String[7], params + 1, n_params, pGPS);
        }

      if(_tcscmp(params[0] + 1,TEXT("PGRMZ"))==0)
	{
	  return RMZ(&String[7], params + 1, n_params, pGPS);
	}
      if(_tcscmp(params[0] + 1,TEXT("PLKAS"))==0)
        {
          return PLKAS(&String[7], params + 1, n_params, pGPS);
        }
      return FALSE;
    }

  if(_tcscmp(params[0] + 3,TEXT("GSA"))==0)
    {
      return GSA(&String[7], params + 1, n_params, pGPS);
    }
  if(_tcscmp(params[0] + 3,TEXT("GLL"))==0)
    {
      //    return GLL(&String[7], params + 1, n_params, pGPS);
      return FALSE;
    }
  if(_tcscmp(params[0] + 3,TEXT("RMB"))==0)
    {
      //return RMB(&String[7], params + 1, n_params, pGPS);
          return FALSE;
      }
  if(_tcscmp(params[0] + 3,TEXT("RMC"))==0)
    {
      return RMC(&String[7], params + 1, n_params, pGPS);
    }
  if(_tcscmp(params[0] + 3,TEXT("GGA"))==0)
    {
      return GGA(&String[7], params + 1, n_params, pGPS);
    }
  if(_tcscmp(params[0] + 3,TEXT("VTG"))==0)
    {
      return VTG(&String[7], params + 1, n_params, pGPS);
    }

  return FALSE;
}