nmea_gsa.c

the example file that can decode the NMEA protocol

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

#include "NMEA_Lib.h"


#if (NMEA_INCLUDE_GSA == 1)

#include "NMEA_GSA.h"


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

    if('G' == sentence[0] && 'S' == sentence[1] && 'A' == sentence[2])
    {
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.SelectionMode, &sentence_index, NMEA_GSA_SELECTIONMODE, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.Mode, &sentence_index, NMEA_GSA_MODE, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix1, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX1, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix2, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX2, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix3, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX3, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix4, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX4, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix5, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX5, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix6, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX6, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix7, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX7, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix8, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX8, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix9, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX9, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix10, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX10, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix11, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX11, flags);
        sentenceToCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix12, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX12, flags);
        sentenceToPOINT(sentence, &NMEAObject->GSAObject.PDOP, &sentence_index, NMEA_GSA_PDOP, flags);
        sentenceToPOINT(sentence, &NMEAObject->GSAObject.HDOP, &sentence_index, NMEA_GSA_HDOP, flags);
        sentenceToPOINT(sentence, &NMEAObject->GSAObject.VDOP, &sentence_index, NMEA_GSA_VDOP, flags);
    }
    return ret_val;
}


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

    sentence[0] = 'G';
    sentence[1] = 'S';
    sentence[2] = 'A';

    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.SelectionMode, &sentence_index, NMEA_GSA_SELECTIONMODE, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.Mode, &sentence_index, NMEA_GSA_MODE, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix1, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX1, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix2, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX2, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix3, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX3, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix4, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX4, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix5, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX5, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix6, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX6, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix7, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX7, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix8, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX8, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix9, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX9, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix10, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX10, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix11, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX11, flags);
    sentenceFromCHAR(sentence, &NMEAObject->GSAObject.IDofSatelliteUsedForFix12, &sentence_index, NMEA_GSA_IDOFSATELLITEUSEDFORFIX12, flags);
    sentenceFromPOINT(sentence, &NMEAObject->GSAObject.PDOP, &sentence_index, NMEA_GSA_PDOP, flags);
    sentenceFromPOINT(sentence, &NMEAObject->GSAObject.HDOP, &sentence_index, NMEA_GSA_HDOP, flags);
    sentenceFromPOINT(sentence, &NMEAObject->GSAObject.VDOP, &sentence_index, NMEA_GSA_VDOP, flags);
    return ret_val;
}

#endif