Arduino Sample Codes

Using Arduino Programming Questions
1

hi i want to know if it is possible that you can get a response from the GSM module when you program AT command in arduino.

i understand and try some of the At commands in hyperterminal.

this is my module

i tried some sketch and it did not work

//Serial Monitoring Sketch for Arudino and SIM900D

#include <SoftwareSerial.h> 
//Include the SoftwareSerial library to send serial commands to the cellular module.
#include <string.h> 
//Used for string manipulations
char incoming_char=0; 
//Will hold the incoming character from the Serial Port.
SoftwareSerial cell(2,3); 
//Create a 'fake' serial port. Pin 2 is the Rx pin, pin 3 is the Tx pin.
void setup()
{
  //Initialize serial ports for communication.
Serial.begin(9600);
cell.begin(9600);
Serial.println("Starting SIM900D Communication...");
}
void loop()
{
//If a character comes in from the cellular module...
if(cell.available() >0)
{
incoming_char=cell.read();  //Get the character from the cellular serial port.
Serial.print(incoming_char);  //Print the incoming character to the terminal.
}
//If a character is coming from the terminal to the Arduino...
if(Serial.available() >0)
{
incoming_char=Serial.read();  //Get the character coming from the terminal
cell.print(incoming_char);  //Send the character to the cellular module.
}

i got stack in this part and i can't get the whole output.

Starting SIM900D Communication

2

There was a right brace ( } ) missing from the code. Luckily I had a spare one.
The code is much easier to read when formatted. Consider using the auto format command in the IDE.

Now I will look to see what the code does.

3

A link to the actual device would be better than just a picture of it.
I know that they say that "a picture paints a thousand words" but in this case the words would be better.

Can you please give a fuller explanation of what happens and what you expect to happen when you send AT command ?

4

http://www.e-gizmo.com/KIT/GSMGPRS%20modem%20kit.html

http://www.e-gizmo.com/KIT/Gizduino.html

i want to program the arduino it's just a test that the arduino will do the AT commands on my GSM module

5

Have you downloaded and read the technical manual for the shield ?

6

yes