nmea_apa.c

the example file that can decode the NMEA protocol

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

#include "NMEA_Lib.h"


#if (NMEA_INCLUDE_APA == 1)

#include "NMEA_APA.h"


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

    if('A' == sentence[0] && 'P' == sentence[1] && 'A' == sentence[2])
    {
        sentenceToCHAR(sentence, &NMEAObject->APAObject.StatusBlink, &sentence_index, NMEA_APA_STATUSBLINK, flags);
        sentenceToCHAR(sentence, &NMEAObject->APAObject.StatusCycleLockWarning, &sentence_index, NMEA_APA_STATUSCYCLELOCKWARNING, flags);
        sentenceToPOINT(sentence, &NMEAObject->APAObject.CrossTrackErrorMagnitude, &sentence_index, NMEA_APA_CROSSTRACKERRORMAGNITUDE, flags);
        sentenceToCHAR(sentence, &NMEAObject->APAObject.DirectionToSteer, &sentence_index, NMEA_APA_DIRECTIONTOSTEER, flags);
        sentenceToCHAR(sentence, &NMEAObject->APAObject.CrossTrackUnits, &sentence_index, NMEA_APA_CROSSTRACKUNITS, flags);
        sentenceToCHAR(sentence, &NMEAObject->APAObject.StatusArrivalCircleEntered, &sentence_index, NMEA_APA_STATUSARRIVALCIRCLEENTERED, flags);
        sentenceToCHAR(sentence, &NMEAObject->APAObject.StatusPerpendicularPassedAtWaypoint, &sentence_index, NMEA_APA_STATUSPERPENDICULARPASSEDATWAYPOINT, flags);
        sentenceToUINT16(sentence, &NMEAObject->APAObject.BearingOriginToDestination, &sentence_index, NMEA_APA_BEARINGORIGINTODESTINATION, flags);
        sentenceToCHAR(sentence, &NMEAObject->APAObject.MagneticOrTrue, &sentence_index, NMEA_APA_MAGNETICORTRUE, flags);
        sentenceToWPID(sentence, &NMEAObject->APAObject.DestinationWaypointID, &sentence_index, NMEA_APA_DESTINATIONWAYPOINTID, flags);
    }
    return ret_val;
}


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

    sentence[0] = 'A';
    sentence[1] = 'P';
    sentence[2] = 'A';

    sentenceFromCHAR(sentence, &NMEAObject->APAObject.StatusBlink, &sentence_index, NMEA_APA_STATUSBLINK, flags);
    sentenceFromCHAR(sentence, &NMEAObject->APAObject.StatusCycleLockWarning, &sentence_index, NMEA_APA_STATUSCYCLELOCKWARNING, flags);
    sentenceFromPOINT(sentence, &NMEAObject->APAObject.CrossTrackErrorMagnitude, &sentence_index, NMEA_APA_CROSSTRACKERRORMAGNITUDE, flags);
    sentenceFromCHAR(sentence, &NMEAObject->APAObject.DirectionToSteer, &sentence_index, NMEA_APA_DIRECTIONTOSTEER, flags);
    sentenceFromCHAR(sentence, &NMEAObject->APAObject.CrossTrackUnits, &sentence_index, NMEA_APA_CROSSTRACKUNITS, flags);
    sentenceFromCHAR(sentence, &NMEAObject->APAObject.StatusArrivalCircleEntered, &sentence_index, NMEA_APA_STATUSARRIVALCIRCLEENTERED, flags);
    sentenceFromCHAR(sentence, &NMEAObject->APAObject.StatusPerpendicularPassedAtWaypoint, &sentence_index, NMEA_APA_STATUSPERPENDICULARPASSEDATWAYPOINT, flags);
    sentenceFromUINT16(sentence, &NMEAObject->APAObject.BearingOriginToDestination, &sentence_index, NMEA_APA_BEARINGORIGINTODESTINATION, flags);
    sentenceFromCHAR(sentence, &NMEAObject->APAObject.MagneticOrTrue, &sentence_index, NMEA_APA_MAGNETICORTRUE, flags);
    sentenceFromWPID(sentence, &NMEAObject->APAObject.DestinationWaypointID, &sentence_index, NMEA_APA_DESTINATIONWAYPOINTID, flags);
    return ret_val;
}

#endif