SERVER CLIENT/httpGET (SIM808/GSM/GPRS)

Projects Programming
1

Hi, im using the sim808 to send coordinates to a http server.

Here i send a AT command using the sim808's library:

 gsm.SimpleWriteln("AT+CGNSINF");

Here i use a function thats return char by char from the AT command's answer. I save each one in a char array:

char leu = gsm.jp();
  int k = 0;
  char teste[70];
  while (leu != 0)
  {
    teste[k] = leu;
    k++;
    leu = gsm.jp();
  }

And here i can have my string for send:

String web = "/pushingbox?devid=XXXXXXXXXXXXXX=" + x + "&y=" + y + '\0';

But the command "inet.httpGET" uses char, so i used the toCharArray with my string:

char wp[100];
teste.toCharArray(wp, sizeof(wp));

Until here its all ok! I tested this code just for add to String and convert to char array, its working!!!
But when a include the command:

  inet.httpGET("api.pushingbox.com", 80, website, msg, 50);

A bug shows up... The first time char array is blank, the second works, the third not work and still like that, and sometimes it never returns anything in the string/char. I really don't know what can be, so please help me, thanks for now!!

The full code its here:

#include "SIM900.h"
#include <SoftwareSerial.h>
#include "inetGSM.h"
//#include "sms.h"
//#include "call.h"

//To change pins for Software Serial, use the two lines in GSM.cpp.

//GSM Shield for Arduino
//www.open-electronics.org
//this code is based on the example of Arduino Labs.

//Simple sketch to start a connection as client.

InetGSM inet;
//CallGSM call;
//SMSGSM sms;

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

void setup()
{


  //Serial connection.
  Serial.begin(9600);
  Serial.println("GSM Shield testing.");
  //Start configuration of shield with baudrate.
  //For http uses is raccomanded to use 4800 or slower.
  if (gsm.begin(2400)) {
    Serial.println("\nstatus=READY");
    started = true;
  }
  else Serial.println("\nstatus=IDLE");

  if (started) {
    //GPRS attach, put in order APN, username and password.
    //If no needed auth let them blank.
    while (!inet.attachGPRS("zap.vivo.com", "vivo", "vivo"))
    {
      Serial.println("status=ERROR");
      delay(2000);
    }
    delay(1000);
    Serial.println("status=ATTACH");

    //Read IP address.
    gsm.SimpleWriteln("AT+CIFSR");
    delay(5000);
    //Read until serial buffer is empty.
    gsm.WhileSimpleRead();
    gsm.SimpleWriteln("AT+CGNSPWR=1");
    delay(1500);
    gsm.WhileSimpleRead();
    delay(1000);

    numdata = inet.httpGET("api.pushingbox.com", 80, "/pushingbox?devid=xxxxxxxxxxxxxxxx", msg, 50);

    //Print the results.
    Serial.println("\nNumber of data received:");
    Serial.println(numdata);
    Serial.println("\nData received:");
    Serial.println(msg);
  }
};

void loop()
{


  String teste =  xy();
  char wp[100];
  teste.toCharArray(wp, sizeof(wp));
Serial.println(wp);
delay(1000);
 send_sheets(wp);
  

};

String xy()
{

  gsm.SimpleWriteln("AT+CGNSINF");
  delay(3000);
  char leu = gsm.jp();
  int k = 0;
  char teste[70];
  while (leu != 0)
  {
    teste[k] = leu;
    k++;
    leu = gsm.jp();
  }
  int flag = 1;
  i = 0;
  int virg = 0;
  String x = "", y = "";
  while (flag)
  {
    if (teste[i] == ',') //HERE IS FOR SEPARATE TWO PARAMETERS OF THE RETURN FROM AT COMMAND
      virg++;
    else if (virg == 3)
      x += teste[i];
    else if (virg == 4)
      y += teste[i];
    else if (virg == 5)
      flag = 0;
    i++;
  }

  String web = "/pushingbox?devid=xxxxxxxxxxxxxx=" + x + "&y=" + y + '\0';
  return web;
}
void send_sheets(char website[])
{

  inet.httpGET("api.pushingbox.com", 80, website, msg, 50);

}