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TinyGPS distance calculation

Posted by Steven Chang on January 4, 2011 at 9:10pm

Hi there 
I have a EB-85 gps connected to an Arduino

I used TinyGPS from http://arduiniana.org/libraries/tinygps/ and

was able to obtain NMEA sentences from my GPS

and also display then on the serial monitor of the Arduino IDE

 

I then modified the code by adding a Haversine function for calculating distance between 2 points

But i am having trouble accessing the position data from the GPS as input to my Haversine function

 

I am trying to access the values of lat and lon from 
gps.get_position(&lat, &lon, &age);
but i keep getting an error 

 

Attached is a copy of my code if it helps

my problem starts from line 55 of the code

A major part of the code was directly copied from TinyGPS

Simple_TinyGPS_Test_01.pde

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Tags: gps, haversine, heading, distance
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  • Steven Chang January 4, 2011 at 9:16pm

    Short description of  TinyGPS

     

    "TinyGPS is designed to provide most of the NMEA GPS functionality I imagine an Arduino user would want – position, date, time, altitude, speed and course – without the large size that seems to accompany similar bodies of code.  To keep resource consumption low, the library avoids any floating point dependency and ignores all but a few key GPS fields."

     

    http://arduiniana.org/libraries/tinygps/

    TinyGPS | Arduiniana
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