c语言 nmealib-0.5.3 学习 简单代码 ，供参考

void showInfo1(char *buf)

{

    char gps_str[1024];// ="$GPGGA,031105.000,4003.9196,N,11620.5765,E,1,05,3.4,109.0,M,-6.4,M,,0000*4A\r\n";

    sprintf(gps_str,"%s",buf);

    nmeaINFO info;                  // nmea协议解析结果结构体

    nmeaPARSER parser;              // nmea协议解析载体

    nmeaPOS dpos;

    

    nmea_zero_INFO(&info);          // 填入默认的解析结果

    nmea_parser_init(&parser);      // 为解析载体分配内存空间



    // 调用函数完成GPS信息解析，最终结果保留于info数组中

    if( (nmea_parse(&parser, gps_str, (int)strlen(gps_str), &info)) > 0 )

    {

        nmea_info2pos(&info, &dpos);

        printf("longitude   %.5f\r\n",info.lon);

        printf("latitude    %.5f\r\n",info.lat);

        printf("speed       %.2f\r\n",info.speed);

        printf("\r\n");

        printf("longitude   %10.8f\r\n",nmea_radian2degree(info.lon));

        printf("latitude    %10.8f\r\n",nmea_radian2degree(info.lat));

        printf("longitude   %10.8f\r\n",nmea_radian2degree(dpos.lon));

        printf("latitude    %10.8f\r\n",nmea_radian2degree(dpos.lat));

    }



    nmea_parser_destroy(&parser);   // 释放解析载体的内存空间

}



void showInfo_GPGGA(char *buf)

{

    char gps_str[1024];// ="$GPGGA,031105.000,4003.9196,N,11620.5765,E,1,05,3.4,109.0,M,-6.4,M,,0000*4A\r\n";



    sprintf(gps_str,"%s",buf);

    nmeaINFO info;                  // nmea协议解析结果结构体

    nmeaGPGGA pack;

    nmeaPOS dpos;

    

    nmea_zero_INFO(&info);          // 填入默认的解析结果

    nmea_zero_GPGGA(&pack);

    // 调用函数完成GPS信息解析，最终结果保留于info数组中

    if( (nmea_parse_GPGGA(gps_str, (int)strlen(gps_str), &pack)) > 0 )

    {

        nmea_GPGGA2info(&pack,&info);

        nmea_info2pos(&info, &dpos);

        printf("GPGGA longitude   %10.8f\r\n",nmea_radian2degree(dpos.lon));

        printf("GPGGA latitude    %10.8f\r\n",nmea_radian2degree(dpos.lat));

        printf("GPGGA height_sea   %10.8f\r\n",pack.elv);

        printf("GPGGA height_ground   %10.8f\r\n",pack.diff);

        printf("GPGGA GPS_Num   %2d\r\n",pack.satinuse);

    }

}



void showInfo_GPRMC(char *buf)

{

    char gps_str[1024];// ="$GPGGA,031105.000,4003.9196,N,11620.5765,E,1,05,3.4,109.0,M,-6.4,M,,0000*4A\r\n";

    sprintf(gps_str,"%s",buf);

    nmeaINFO info;                  // nmea协议解析结果结构体

    nmeaGPRMC pack;

    nmeaPOS dpos;

    nmea_zero_INFO(&info);          // 填入默认的解析结果

    nmea_zero_GPRMC(&pack);

    // 调用函数完成GPS信息解析，最终结果保留于info数组中

    if( (nmea_parse_GPRMC(gps_str, (int)strlen(gps_str), &pack)) > 0 )

    {

        nmea_GPRMC2info(&pack,&info);

        nmea_info2pos(&info, &dpos);

        //

        printf("GPRMC status  %c\r\n", pack.status);

        printf("DATE     : %4d-%02d-%02d \n",1900+pack.utc.year,pack.utc.mon+1,pack.utc.day);

        printf("TIME     :  %02d:%02d:%02d \n",pack.utc.hour+8,pack.utc.min,pack.utc.sec);

        printf("GPRMC longitude   %10.8f\r\n %c",nmea_radian2degree(dpos.lon),pack.ns);

        printf("GPRMC latitude    %10.8f\r\n %c",nmea_radian2degree(dpos.lat),pack.ew);

        printf("Speed   : %10.4f Km/h\n",pack.speed);

        printf("direction   : %10.4f \n",pack.direction);

    }

}