DFRobot GPS/GPRS/GSM Module V3.0 working example

Ok, Ive been working on a simple code to stream GPS data to a webserver and then be able to locate it with Google Maps API.

here is a WORKING example of what Ive done so far. Before you begin, Im open to any suggestions and improvements. Again, 
ITS A SIMPLE CODE, It uses delays (because I know what the ATcommand answer will be) instead of interpreting the module answer.

The only time it reads data, is when decoding GPS stream into Lat/Long strings.

Im using GPS/GPRS/GSM Module V3.0 and Arduino UNO.


ANyways... here is the arduino code:
 

Code: Select all char aux_str[30]; char aux; char latitude[15]; char longitude[15]; char inChar;  //used to decode gps int index; char inData[200]; void setup() {   //Init the driver pins for GSM function    pinMode(3,OUTPUT);    pinMode(4,OUTPUT);    pinMode(5,OUTPUT);   //Output GSM Timing    digitalWrite(5,HIGH);    delay(1500);    digitalWrite(5,LOW);        Serial.begin(9600);        // Use these commands instead of the hardware switch 'UART select' in order to enable each mode    // If you want to use both GMS and GPS. enable the required one in your code and disable the other one for each access.    digitalWrite(3,LOW);//enable GSM TX?RX    digitalWrite(4,HIGH);//disable GPS TX?RX        delay(20000); //wait 20secs for module to be ready        start_GSM(); //initializes GSM/GPRS configs        delay(5000);        start_GPS();  //initializates GPS       } void loop()     {           read_GPS();  //acquire actualLat/Long   delay(2000);   send_GPRS(); //send actual Lat/Long to desired url   delay(30000); } void start_GSM(){     //Configuracion GPRS Claro Argentina    Serial.println("AT");    delay(2000);    Serial.println("AT CREG?");    delay(2000);    Serial.println("AT SAPBR=3,1,"APN","igprs.claro.com.ar"");  //replace with you mobile network APN    delay(2000);    Serial.println("AT SAPBR=3,1,"USER","clarogprs""); //replace with your  mobile network USER    delay(2000);    Serial.println("AT SAPBR=3,1,"PWD","clarogprs999""); //replace with your mobile password    delay(2000);    Serial.println("AT SAPBR=3,1,"Contype","GPRS"");  //config connection as GPRS    delay(2000);    Serial.println("AT SAPBR=1,1");  //set it    delay(10000);    Serial.println("AT HTTPINIT"); //initiate HTTP    delay(2000);    Serial.println("AT HTTPPARA="CID",1"); //mobile network CID    delay(2000); } void send_GPRS(){  //here we send the actual Lat/long          /*I adapted a PHP template to receive the lat/long data             if there is latitude=XXXXX&longitude=XXXX on header, PHP will write info into a TXT file             If not, then, it will read TXT file and place a mark on a google map API          **/          Serial.print("AT HTTPPARA="URL","YOU.URL.COM/geo/geo2_0.php?latitude=");          Serial.print(latitude);          Serial.print("&longitude=");          Serial.print(longitude);          Serial.println(""");          delay(2000);          Serial.println("AT HTTPACTION=0"); //now GET action          delay(2000);                     } void start_GPS(){     //Configuracion en Inicializacion GPS    Serial.print("AT");    delay(1000);    Serial.println("AT CGPSIPR=9600");// (set the baud rate)    delay(1000);    Serial.println("AT CGPSPWR=1"); // ?turn on GPS power supply?    delay(1000);    Serial.println("AT CGPSRST=1"); //?reset GPS in autonomy mode?    delay(120000); //delay long enough to assure GPS gets date, otherwise, location will be 0/0 } void read_GPS(){            Serial.println("AT CGPSINF=0");  //ask SIM908 GPS info        read_String();  //read and store serial answer        strtok(inData, ","); //decode string into comma separated values    strcpy(longitude,strtok(NULL, ",")); // Gets longitude    strcpy(latitude,strtok(NULL, ",")); // Gets latitude            convert2Degrees(latitude);  //fix value    convert2Degrees(longitude); //fix value         } void read_String() {      index=0;            while(Serial.available() > 0) // Don't read unless                                                  // there you know there is data   {       if(index < 199) // One less than the size of the array       {           inChar = Serial.read(); // Read a character           inData[index] = inChar; // Store it           index  ; // Increment where to write next           inData[index] = ''; // Null terminate the string       }   } } int8_t convert2Degrees(char* input){    float deg;    float minutes;    boolean neg = false;        //auxiliar variable    char aux[10];    if (input[0] == '-')    {        neg = true;        strcpy(aux, strtok(input 1, "."));    }    else    {        strcpy(aux, strtok(input, "."));    }    // convert string to integer and add it to final float variable    deg = atof(aux);    strcpy(aux, strtok(NULL, ''));    minutes=atof(aux);    minutes/=1000000;    if (deg < 100)    {        minutes  = deg;        deg = 0;    }    else    {        minutes  = int(deg) % 100;        deg = int(deg) / 100;        }    // add minutes to degrees    deg=deg minutes/60;    if (neg == true)    {        deg*=-1.0;    }    neg = false;    if( deg < 0 ){        neg = true;        deg*=-1;    }        float numeroFloat=deg;    int parteEntera[10];    int cifra;    long numero=(long)numeroFloat;      int size=0;        while(1){        size=size 1;        cifra=numero;        numero=numero/10;        parteEntera[size-1]=cifra;        if (numero==0){            break;        }    }      int indice=0;    if( neg ){        indice  ;        input[0]='-';    }    for (int i=size-1; i >= 0; i--)    {        input[indice]=parteEntera[i] '0';        indice  ;    }    input[indice]='.';    indice  ;    numeroFloat=(numeroFloat-(int)numeroFloat);    for (int i=1; i<=6 ; i  )    {        numeroFloat=numeroFloat*10;        cifra= (long)numeroFloat;                  numeroFloat=numeroFloat-cifra;        input[indice]=char(cifra) 48;        indice  ;    }    input[indice]=''; }

Ok, so far, that's the Arduino Code.

And here is the PHP that receives and shows the information, Its arranged by Date, because eventually i want to be able to select a date and see where Ive been. NOTE: you need jquery-1.10.1.min.js within PHP file for it to properly work.

Here is the .js file:
http://www.mediafire.com/?hfeieb260bg89vj

DFrobot wont allow me to attach this file. 


 

Code: Select all<!--   This Script is to store GPS strings over header as Latitude & Longitude store them into a TXT file under the name of the day. If no Lat&Long information on the header, reads the TXT file according to the date, and after that post them into a Google Maps V3 Api map. Author: N4rf - --> <?php    if (!empty($_GET['latitude']) && !empty($_GET['longitude'])) {        function getParameter($par, $default = null){            if (isset($_GET[$par]) && strlen($_GET[$par])) return $_GET[$par];            elseif (isset($_POST[$par]) && strlen($_POST[$par]))                return $_POST[$par];            else return $default;        }                 $day=date("d");   $month=date("m"); $year=date("y"); $fecha=$day.$month."20".$year; $filename=$fecha.'.txt';        $file = $filename;        $lat = getParameter("latitude");        $lon = getParameter("longitude");        $person = $lat.",".$lon."n";                echo "            DATA:n            Latitude: ".$lat."n            Longitude: ".$lon;        if (!file_put_contents($file, $person, FILE_APPEND | LOCK_EX))            echo "nt Error saving Datan";        else echo "nt Data Saven";    }    else { ?> <!DOCTYPE html> <html>     <head>    <!-- Load Jquery -->    <script language="JavaScript" type="text/javascript" src="jquery-1.10.1.min.js"></script>    <!-- Load Google Maps Api -->    <!-- IMPORTANT: change the API v3 key -->    <script src="http://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&sensor=false"></script>    <!-- Initialize Map and markers -->    <script type="text/javascript">        var myCenter=new google.maps.LatLng(-31.40306,-64.19827);        var marker;        var map;        var mapProp;        function initialize()        {            mapProp = {              center:myCenter,              zoom:15,              mapTypeId:google.maps.MapTypeId.ROADMAP              };            setInterval('mark()',30000);        }        function mark()        {                 //adquirimos las fechas para generar el archivo del dia         var f = new Date();                         if(f.getDate() < 10 && (f.getMonth() 1)<10){         var fecha =("0" f.getDate() "0" (f.getMonth()  1)  f.getFullYear()); }else if(f.getDate() > 10 && (f.getMonth() 1)<10){         var fecha =(f.getDate() "0" (f.getMonth()  1)  f.getFullYear()); }else if(f.getDate() < 10 && (f.getMonth() 1)>10){         var fecha =("0" f.getDate() (f.getMonth()  1)  f.getFullYear()); }else if(f.getDate() > 10 && (f.getMonth() 1)>10){         var fecha =(f.getDate() (f.getMonth()  1)  f.getFullYear()); }            map=new google.maps.Map(document.getElementById("googleMap"),mapProp);            var file = fecha ".txt";            $.get(file, function(txt) {                var lines = txt.split("n");                for (var i=0;i<lines.length;i  ){                    console.log(lines[i]);                    var words=lines[i].split(",");                    if ((words[0]!="")&&(words[1]!=""))                    {                        marker=new google.maps.Marker({                              position:new google.maps.LatLng(words[0],words[1]),                              });                        marker.setMap(map);                        map.setCenter(new google.maps.LatLng(words[0],words[1]));                    }                }                marker.setAnimation(google.maps.Animation.BOUNCE);            });        }        google.maps.event.addDomListener(window, 'load', initialize);    </script> </head> <body> <body background="background.png">    <?php        echo '            <!-- Draw information table and Google Maps div -->        <div>            <center><br />                <b> Posicion Actual</b><br /><br />                <br /><br />                <div id="googleMap" style="width:800px;height:700px;"></div>            </center>        </div>';    ?> </body> </html> <?php } ?>

Im setting a dummy for you to try the php code with a Google APi Key of mine:

all you have to do is copy paste this into your browser adress and change XXX for numbres...

http://gpsdummy.net23.net/geo/geo.php?l ... itude=XXXX

example:

http://gpsdummy.net23.net/geo/geo.php?l ... =34.214234

and if you want to see the last location point, just go to

http://http://gpsdummy.net23.net/geo/geo.php


Again, its a very simple, yet working example, suggestions and improvements are welcome.


EDITED: Since quoting code is messed up (there are quite a few "/" missing that is missunderstood by forum plataform) Im attaching files.

Please, in order to work, remember to edit your mobile network APN, USER; and PWD.

and on PHP file, copy/pase your Google API key.