nmea_hdg.c

the example file that can decode the NMEA protocol

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

#include "NMEA_Lib.h"


#if (NMEA_INCLUDE_HDG == 1)

#include "NMEA_HDG.h"


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

    if('H' == sentence[0] && 'D' == sentence[1] && 'G' == sentence[2])
    {
        sentenceToPOINT(sentence, &NMEAObject->HDGObject.MagneticSensorHeading, &sentence_index, NMEA_HDG_MAGNETICSENSORHEADING, flags);
        sentenceToPOINT(sentence, &NMEAObject->HDGObject.MagneticDeviationDegrees, &sentence_index, NMEA_HDG_MAGNETICDEVIATIONDEGREES, flags);
        sentenceToCHAR(sentence, &NMEAObject->HDGObject.MagneticDeviationDirection, &sentence_index, NMEA_HDG_MAGNETICDEVIATIONDIRECTION, flags);
        sentenceToPOINT(sentence, &NMEAObject->HDGObject.MagneticVariationDegrees, &sentence_index, NMEA_HDG_MAGNETICVARIATIONDEGREES, flags);
        sentenceToCHAR(sentence, &NMEAObject->HDGObject.MagneticVariationDirection, &sentence_index, NMEA_HDG_MAGNETICVARIATIONDIRECTION, flags);
    }
    return ret_val;
}


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

    sentence[0] = 'H';
    sentence[1] = 'D';
    sentence[2] = 'G';

    sentenceFromPOINT(sentence, &NMEAObject->HDGObject.MagneticSensorHeading, &sentence_index, NMEA_HDG_MAGNETICSENSORHEADING, flags);
    sentenceFromPOINT(sentence, &NMEAObject->HDGObject.MagneticDeviationDegrees, &sentence_index, NMEA_HDG_MAGNETICDEVIATIONDEGREES, flags);
    sentenceFromCHAR(sentence, &NMEAObject->HDGObject.MagneticDeviationDirection, &sentence_index, NMEA_HDG_MAGNETICDEVIATIONDIRECTION, flags);
    sentenceFromPOINT(sentence, &NMEAObject->HDGObject.MagneticVariationDegrees, &sentence_index, NMEA_HDG_MAGNETICVARIATIONDEGREES, flags);
    sentenceFromCHAR(sentence, &NMEAObject->HDGObject.MagneticVariationDirection, &sentence_index, NMEA_HDG_MAGNETICVARIATIONDIRECTION, flags);
    return ret_val;
}

#endif