gps_info.c File Reference

Retrieve GPS information Sample More...

#include <stdio.h>
#include <unistd.h>
#include <libmoxa_rtu.h>

Functions
int	main (int argc, char **const argv)

Detailed Description

Retrieve GPS information Sample

Copyright

Moxa Inc.

Date

06-04-2013

Author

Changfu Hsieh

Version

V1.0

GPS information

Introduction:
This sample code shows how to retrieve GPS information by MOXA GPS API.
Example:
1. Execute the sample code with default settings: ./gps_info
2. Execute the sample code with GPS active antenna: ./gps_info -a
Default:
Use passive antenna, if you are using an active antenna, please use -a parameter.
Help:

root@Moxa:/home#./gps_info -h
GPS information

Usage: ./gps_info [OPTIONS]

Options:
        -a       Use active antenna. 

Library:
GPS APIs

Function Documentation

int main	(	int	argc,
		char **const	argv
	)

/*******************************************************************************
 * Copyright Moxa Inc.
 *
 * Get GPS information
 *
 * Date            Author             Comment
 * 06-04-2013 Changfu Hsieh  Created.
 ******************************************************************************/

#include <stdio.h>
#include <unistd.h>
#include <libmoxa_rtu.h>

int main(int argc, char **const argv)
{
    INT32 rc = 0;
    GPS_DATA gpsData;
    INT8 cmd;
    UINT8 activeAntenna = 0;

    for(;;)
    {
        rc = getopt(argc, argv, "ah");

        if(rc == EOF) break;

        switch(rc)
        {

            case 'a':
                activeAntenna = 1;
                break;

            case 'h':
                printf("-a: Using active antenna, default is passive antenna.");
                exit(1);
        }
    }


    rc = MX_RTU_GPS_Start(activeAntenna);

    printf("MX_RTU_GPS_Start rc:%d\n", rc);

    while(1)
    {
        printf("Press 'enter' to retrieve GPS information or 'q' to quite GPS function.\n", rc);
        scanf("%c", &cmd);

        switch(cmd)
        {

            case 'q':

            case 'Q':
                rc = MX_RTU_GPS_Stop();
                printf("MX_RTU_GPS_Stop rc:%d\n", rc);
                printf("GPS: Quit\n");
                return 0;

            default:
                MX_RTU_GPS_Get_Info(&gpsData);
                printf("GPS fix:%d, latitude:%f, longitude:%f, satInUse:%d, satInView:%d\n", gpsData.fix, gpsData.lat, gpsData.lon, gpsData.satInUse, gpsData.satInView);
                printf("GPS time:%d-%d-%d %d:%d:%d\n", gpsData.time.year, gpsData.time.mon, gpsData.time.day, gpsData.time.hour, gpsData.time.min, gpsData.time.sec);
                break;
        }
    }

    return 0;
}