nmea_gll.c

the example file that can decode the NMEA protocol

#include <stdlib.h>
#include <string.h>

#include "NMEA_Lib.h"


#if (NMEA_INCLUDE_GLL == 1)

#include "NMEA_GLL.h"


BOOL NMEA_ParseGLLSentence(CHAR * sentence, struct NMEAObject_t * NMEAObject, UINT32 * flags)
{
    UINT32 sentence_index = 3;
    BOOL ret_val = NMEA_FAILURE;

    if('G' == sentence[0] && 'L' == sentence[1] && 'L' == sentence[2])
    {
        sentenceToPOINT(sentence, &NMEAObject->GLLObject.Latitude, &sentence_index, NMEA_GLL_LATITUDE, flags);
        sentenceToCHAR(sentence, &NMEAObject->GLLObject.NorthOrSouth, &sentence_index, NMEA_GLL_NORTHORSOUTH, flags);
        sentenceToPOINT(sentence, &NMEAObject->GLLObject.Longitude, &sentence_index, NMEA_GLL_LONGITUDE, flags);
        sentenceToCHAR(sentence, &NMEAObject->GLLObject.EastOrWest, &sentence_index, NMEA_GLL_EASTORWEST, flags);
        sentenceToUTC(sentence, &NMEAObject->GLLObject.UniversalTimeCoordinated, &sentence_index, NMEA_GLL_UNIVERSALTIMECOORDINATED, flags);
        sentenceToCHAR(sentence, &NMEAObject->GLLObject.StatusA, &sentence_index, NMEA_GLL_STATUSA, flags);
    }
    return ret_val;
}


BOOL NMEA_CreateGLLSentence(CHAR * sentence, struct NMEAObject_t * NMEAObject, UINT32 * flags)
{
    UINT32 sentence_index = 3;
    BOOL ret_val = NMEA_FAILURE;

    sentence[0] = 'G';
    sentence[1] = 'L';
    sentence[2] = 'L';

    sentenceFromPOINT(sentence, &NMEAObject->GLLObject.Latitude, &sentence_index, NMEA_GLL_LATITUDE, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GLLObject.NorthOrSouth, &sentence_index, NMEA_GLL_NORTHORSOUTH, flags);
    sentenceFromPOINT(sentence, &NMEAObject->GLLObject.Longitude, &sentence_index, NMEA_GLL_LONGITUDE, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GLLObject.EastOrWest, &sentence_index, NMEA_GLL_EASTORWEST, flags);
    sentenceFromUTC(sentence, &NMEAObject->GLLObject.UniversalTimeCoordinated, &sentence_index, NMEA_GLL_UNIVERSALTIMECOORDINATED, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GLLObject.StatusA, &sentence_index, NMEA_GLL_STATUSA, flags);
    return ret_val;
}

#endif