please help arduino to send AT commands to sos gsm shield

I have spent two weeks learning everything i can to give me an understanding of how the Arduino works and how the coding works so that i can complete my project and be able to hopefully talk to others with an understand that would allow me to solve my issue.

But i am struggling and really need help.

I have tried lots of codes from on here and from youtube videos but i don’t get a return result , sometimes i just get jumble or nothing .I’m not going to included all the codes which i used as I’m sure someone will spot the problem pretty quick.

arduino uno R3 with mega328p
SOS Arduino Compatible M95 GSM / GPRS Shield as its to large to attach.

if i can just get to the stage of writing and sending AT commands from the computer through the arduino and to the gsm shield. and then get the response to appear back on the computer i can write my code from there and show other how i did it

i have been using other peoples codes attached is two of which i have tried. the data sheet provided with the GSM shield can be found at as its to large to attach.

#include <SoftwareSerial.h>
SoftwareSerial GPRS(0, 1);

unsigned char buffer[64];         // buffer array for data recieve over serial port
int count=0;                      // counter for buffer array 

void setup()
  GPRS.begin(9600);               // the GPRS baud rate   
  Serial.begin(9600);             // the Serial port of Arduino baud rate.

void loop()
  while(GPRS.available())          // reading data into char array 
    buffer[count++];   // writing data into array
    if(count == 64) break;
  Serial.write(buffer,count);      // if no data transmission ends, write buffer to hardware serial port
  clearBufferArray();              // call clearBufferArray function to clear the storaged data from the array
  count = 0;                       // set counter of while loop to zero

  if (Serial.available()) {        
    byte b =;
    if ( b == '*')
      GPRS.write( 0x1a );          // replace * with ctrl+z

void clearBufferArray()
  for (int i=0; i<count;i++)
  Serial Event example

 When new serial data arrives, this sketch adds it to a String.
 When a newline is received, the loop prints the string and
 clears it.

 A good test for this is to try it with a GPS receiver
 that sends out NMEA 0183 sentences.

 Created 9 May 2011
 by Tom Igoe

 This example code is in the public domain.


String inputString = "";         // a string to hold incoming data
boolean stringComplete = false;  // whether the string is complete

void setup() {
  // initialize serial:
  // reserve 200 bytes for the inputString:

void loop() {
  // print the string when a newline arrives:
  if (stringComplete) {
    // clear the string:
    inputString = "";
    stringComplete = false;

please can some one help me construct a code .
i think my mistake is that i am not understanding the pins on the gsm data sheet and might need to include more pins in my code.

Can anyone help please after a few weeks of struggling on my own i am getting to my wits end

SoftwareSerial GPRS(0, 1);

Why on earth are you doing software serial on the hardware serial pins?

  Serial.begin(9600);             // the Serial port of Arduino baud rate.

You most certainly can NOT do software serial and hardware serial on the same pins at the same time.

i tried doing them on (0, 1) and i have tired on (2, 3) as they are the secondary rx tx ports for the gsm sheild which are listed on the data sheet neither worked. i have tried so many codes over the last few weeks i got to the stage where i would try anything lol

The gsm Data sheet list pins (1, 0) as the Rx and Tx pins

so i cannot work out from your comment if i should be sending the information through different ports ? if so can you look at the data sheet in the link above and let me know which pins i should send and receive the AT commands through ?

or should i be sending the information in a different type of format ?
or should i be sending the information as i am with the code i am but with out designating pins?

once i am able to send and receive at commands through the serial monitor i have all the codes in order which i need to get the device to do what is required. its just the arduino C++ code and GSM pin data holding me back

i really appreciate the help where it can be spared because as you can see i am new to adruino's but fine with AT commands

is there anyone that can help ?

This idea is terrible, what are you thinking? The code you have written,or wherever you got it from, is terrible. I bet you no one even likes you. Do you wear your trousers properly boi because you need a belt. Besides we dont give help to little snitch ni**as like you.