arduino uno and gps/gprs/gsm module v3.0

eni

want to use arduino uno and gps/gprs/gsm module v3.0 from drfobot for my project. but so far i am unable to receive an sms on the gsm shield, anybody who can give me a working arduino code? thanks.

It would be better if you share your work in which you are facing issue then it might make some sense.

// Product name: GPS/GPRS/GSM Module V3.0
// # Product SKU : TEL0051
// # Description:
// # The sketch for controling the GSM/GPRS/GPS module via SMS.
// # Steps:
// # 1. Turn the S1 switch to the Prog(right side)
// # 2. Turn the S2 switch to the USB side(left side)
// # 3. Plug the GSM/GPS jumper caps to the GSM side
// # 4. Upload the sketch to the Arduino board(Make sure turn off other Serial monitor )
// # 5. Turn the S1 switch to the comm(left side)
// # 6. Turn the S2 switch to the Arduino(right side)
// # 7. RST the board until the START led is on(make sure you have >6V power supply)
// # 8. Plug the long side of LED into pin 8 and short side into GND
// # 9. Start sending "LH" and "LL" to your board to turn LED on and off.

/*
* created: 2013-11-14
* by: Grey
* Version: 0.3
* Attention: if you send the wrong SMS command to the module, just need to press RST.
* This version can't watch the module status via the serial monitor, it only display the Arduino command.
* If you want to watch the status,use the SoftwareSerial or the board with another serial port plese.
*/


byte gsmDriverPin[3] = {
3,4,5};//The default digital driver pins for the GSM and GPS mode
//If you want to change the digital driver pins
//or you have a conflict with D3~D5 on Arduino board,
//you can remove the J10~J12 jumpers to reconnect other driver pins for the module!
int ledpin = 13;
char inchar;
void setup()
{
//Init the driver pins for GSM function
for(int i = 0 ; i < 3; i++){
pinMode(gsmDriverPin,OUTPUT);
}
pinMode(ledpin,OUTPUT);
Serial.begin(9600); //set the baud rate
digitalWrite(5,HIGH); //Output GSM Timing
delay(1500);
digitalWrite(5,LOW);
digitalWrite(3,LOW); //Enable the GSM mode
digitalWrite(4,HIGH); //Disable the GPS mode
delay(2000);
delay(5000); //call ready
delay(5000);
Serial.println("AT+CMGD=1,4"); //Delete all SMS in box
}

void loop()
{
if(Serial.available()>0)
{
inchar=Serial.read();
if(inchar=='T')
{
delay(1000);
inchar=Serial.read();
if (inchar=='I') //When the GSM module get the message, it will display the sign '+CMTI "SM", 1' in the serial port
{
delay(1000);
Serial.println("AT+CMGR=1"); //When Arduino read the sign, send the "read" AT command to the module
delay(1000);
}
}
else if (inchar=='L')
{
delay(1000);
inchar=Serial.read();
if (inchar=='H') //Thw SMS("LH") was display in the Serial port, and Arduino has recognize it.
{
delay(1000);
digitalWrite(ledpin,HIGH); //Turn on led
delay(1000);
Serial.println("AT+CMGD=1,4"); //Delete all message
delay(1000);
}
if (inchar=='L') //Thw SMS("LH") was display in the Serial port, and Arduino has recognize it.
{
delay(100);
digitalWrite(ledpin,LOW); //Turn off led
delay(1000);
Serial.println("AT+CMGD=1,4"); //Delete all message
delay(1000);
}
}
}
}

ok. that is the code i am using. the problem is: the led on pin 13 doesnt go on and in the serial monitor the only thing being displayed is: AT+CMGD=1,4
please help. thanks