nmea_osd.c

the example file that can decode the NMEA protocol

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

#include "NMEA_Lib.h"


#if (NMEA_INCLUDE_OSD == 1)

#include "NMEA_OSD.h"


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

    if('O' == sentence[0] && 'S' == sentence[1] && 'D' == sentence[2])
    {
        sentenceToPOINT(sentence, &NMEAObject->OSDObject.HeadingDegrees, &sentence_index, NMEA_OSD_HEADINGDEGREES, flags);
        sentenceToCHAR(sentence, &NMEAObject->OSDObject.Status, &sentence_index, NMEA_OSD_STATUS, flags);
        sentenceToPOINT(sentence, &NMEAObject->OSDObject.VesselCourse, &sentence_index, NMEA_OSD_VESSELCOURSE, flags);
        sentenceToCHAR(sentence, &NMEAObject->OSDObject.CourseReference, &sentence_index, NMEA_OSD_COURSEREFERENCE, flags);
        sentenceToPOINT(sentence, &NMEAObject->OSDObject.VesselSpeed, &sentence_index, NMEA_OSD_VESSELSPEED, flags);
        sentenceToCHAR(sentence, &NMEAObject->OSDObject.SpeedReference, &sentence_index, NMEA_OSD_SPEEDREFERENCE, flags);
        sentenceToPOINT(sentence, &NMEAObject->OSDObject.VesselSet, &sentence_index, NMEA_OSD_VESSELSET, flags);
        sentenceToPOINT(sentence, &NMEAObject->OSDObject.VesselDrift, &sentence_index, NMEA_OSD_VESSELDRIFT, flags);
        sentenceToCHAR(sentence, &NMEAObject->OSDObject.SpeedUnits, &sentence_index, NMEA_OSD_SPEEDUNITS, flags);
    }
    return ret_val;
}


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

    sentence[0] = 'O';
    sentence[1] = 'S';
    sentence[2] = 'D';

    sentenceFromPOINT(sentence, &NMEAObject->OSDObject.HeadingDegrees, &sentence_index, NMEA_OSD_HEADINGDEGREES, flags);
    sentenceFromCHAR(sentence, &NMEAObject->OSDObject.Status, &sentence_index, NMEA_OSD_STATUS, flags);
    sentenceFromPOINT(sentence, &NMEAObject->OSDObject.VesselCourse, &sentence_index, NMEA_OSD_VESSELCOURSE, flags);
    sentenceFromCHAR(sentence, &NMEAObject->OSDObject.CourseReference, &sentence_index, NMEA_OSD_COURSEREFERENCE, flags);
    sentenceFromPOINT(sentence, &NMEAObject->OSDObject.VesselSpeed, &sentence_index, NMEA_OSD_VESSELSPEED, flags);
    sentenceFromCHAR(sentence, &NMEAObject->OSDObject.SpeedReference, &sentence_index, NMEA_OSD_SPEEDREFERENCE, flags);
    sentenceFromPOINT(sentence, &NMEAObject->OSDObject.VesselSet, &sentence_index, NMEA_OSD_VESSELSET, flags);
    sentenceFromPOINT(sentence, &NMEAObject->OSDObject.VesselDrift, &sentence_index, NMEA_OSD_VESSELDRIFT, flags);
    sentenceFromCHAR(sentence, &NMEAObject->OSDObject.SpeedUnits, &sentence_index, NMEA_OSD_SPEEDUNITS, flags);
    return ret_val;
}

#endif