Not sending gps location via SIM900

Projects Programming
1

I am trying to read the gps coordinates and send them to a PHP file on my server.

The following code below does the following When it picks up a location it then sends it to the php file and then adds
it to a text file, I have tried .httpGET by itself and added the the value and it saves to the text file.

When i try the code blow it says Sending Data and then it says Data sent and when I check the text file there is no
information in there. When i check the print out the buffer and past that information into my web browser url bar and then check the text file the information has been saved.

What can cause this to happen?

#include <MemoryFree.h>
#include <TinyGPS++.h>
#include "SIM900.h"
#include <SoftwareSerial.h>
#include "inetGSM.h"

InetGSM inet;
TinyGPSPlus gps;

char msg[50];
int numdata;
int i=0;
boolean started=false;

char APN_Server[50] = "general.t-mobile.uk";
char APN_User[50] = "t-mobile";
char APN_Pass[50] = "tm";

int lat1,lat2; 
int lon1,lon2; 
char buffer[70];


SoftwareSerial ss(7, 6);

void setup() 
{
  Serial.begin(9600);
  ss.begin(9600);

  Serial.println("Starting...");
  
  if (gsm.begin(2400)){
    Serial.println("\nstatus=READY");
    started=true;  
  }else{
    Serial.println("\nstatus=IDLE");
  }
  
  if(started){
     if (inet.attachGPRS(APN_Server, APN_User, APN_Pass)){
       Serial.println("status=ATTACHED");
     }else{ 
       Serial.println("status=ERROR");
     }
  }


};



void loop() 
{
  ss.listen();
  while (ss.available() > 0) {
    char inByte = ss.read();
    if (gps.encode(inByte++)){
        Serial.print(F("Location: ")); 
  	if (gps.location.isValid()){
		float flat = gps.location.lat();
		float flon = gps.location.lng();
  		lat1 = (int)flat; 
  		lat2 = (flat - lat1)*10000; 
		lon1 = (int)flon; 
		lon2 = (flon - lon1)*10000; 
  
		sprintf(buffer, "/system/gps.php?uid=123&lat=%d.%d&lon=%d.%d", lat1, lat2, lon1, lon2);
		
		Serial.println("Sending Data...");
		inet.httpGET("websiteURL.com", 80, buffer, msg,0); 
		//Serial.println(buffer);
		Serial.println("Data Sent!");
   		//Serial.print(gps.location.lat(), 6);
    		//Serial.print(F(","));
    		//Serial.print(gps.location.lng(), 6);

  }else{
    Serial.print(F("INVALID"));
  }

  Serial.println();
    }
  }

    delay(1000);
 
};

Thanks

2 
#include <MemoryFree.h>

But, you never actually call the functions to see if you have enough memory available. On a 328-based Arduino, I'm guessing you don't have enough.

3

PaulS:

#include <MemoryFree.h>

But, you never actually call the functions to see if you have enough memory available. On a 328-based Arduino, I'm guessing you don't have enough.

freeMemory()=244

what is the best way to get this to work on an uno or is it imposable?

4

freeMemory()=244

Where and when.

or is it imposable?

Probably. There are limits that just can't be violated.

5

Why are you assigning 50 characters for an character array ( string ), and then putting only 2 characters into it, which you don't change ?

Why not assign 3 characters for the array ?

With waste like that, no wonder you are running out of space.