HTTP GET - SIM900A

Projects General Guidance
1

I am using SIM900A GSM/GPRS Module to retrieve the data from a webpage. Can anyone please help me out in the following things?

  1. Why do we need to give delay after every AT commands, when i connect my SIM900A with Arduino Uno using UART?
    2.Below I have posted my HTTP GET method code and the response i obtain from the same. Can anyone please help me out to save the GET response in a variable?
#include <SoftwareSerial.h>
int val;
SoftwareSerial myGsm(7,8);
void setup()
{
myGsm.begin(9600);
Serial.begin(9600);
delay(500);

myGsm.println("AT+CGATT=1");
delay(200);
printSerialData();

myGsm.println("AT+SAPBR=3,1,\"CONTYPE\",\"GPRS\"");//setting the SAPBR,connection type is GPRS
delay(1000);
printSerialData();

myGsm.println("AT+SAPBR=3,1,\"www.airtelgprs.com\",\"\"");//setting the APN,2nd parameter empty works for all networks
delay(5000);
printSerialData();

myGsm.println();
myGsm.println("AT+SAPBR=1,1");
delay(10000);
printSerialData();

myGsm.println("AT+HTTPINIT"); //init the HTTP request
delay(2000);
printSerialData();

//myGsm.println("AT+HTTPPARA=\"URL\",\"http://api.thingspeak.com/apps/thinghttp/send_request?api_key=VV7WQ9DS19E2BNNI\"");// setting the httppara,
myGsm.println("AT+HTTPPARA=\"URL\",\"http://api.thingspeak.com/apps/thinghttp/send_request?api_key=AP6AK0Z3APH3RDNY\"");// setting the httppara,
//the second parameter is the website from where you want to access data
delay(1000);
printSerialData();

myGsm.println();
myGsm.println("AT+HTTPACTION=0");//submit the GET request
delay(8000);//the delay is important if the return datas are very large, the time required longer.
printSerialData();

myGsm.println("AT+HTTPREAD=0,20");// read the data from the website you access
delay(3000);
printSerialData();
//val=printSerialData();


//myGsm.println("");
delay(1000);

myGsm.println("AT+HTTPTERM");// terminate HTTP service
printSerialData();
}
void loop()
{
}
void printSerialData()
{
while(myGsm.available()!=0)
Serial.write(myGsm.read());
}

AT+HTTPINIT

OK
AT+HTTPPARA="URL","http://api.thingspeak.com/apps/thinghttp/sen
AT+HTTPACTION=0

OK

+HTTPACTION:0,200,14
AT+HTTPREAD=0,20

+HTTPREAD:14
1,204,490 hits
OK
2

i have some problem,,, if you have solved this, please tell me about how to solved this problem :frowning:

3

i also have the same problem...please anyone help me out :frowning: