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

Replies

• 

  Harshad Italiya

  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.
• 

  eni

  // 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