gsmsim900A interfacing with arduino

[suman]

This is code im using to make call through gsm but im not able to make call..so plz guide me in thi

#include <SoftwareSerial.h>

SoftwareSerial SIM900(7, 8); // configure software serial port

 

void setup()

{

  SIM900.begin(19200);              

  SIM900power();  

  delay(20000);  // give time to log on to network.

}

 

void SIM900power()

// software equivalent of pressing the GSM shield "power" button

{

  digitalWrite(9, HIGH);

  delay(1000);

  digitalWrite(9, LOW);

  delay(5000);

}

 

void callSomeone()

{

  SIM900.println("ATD + +12128675309;"); // dial US (212) 8675309

  delay(100);

  SIM900.println();

  delay(30000);            // wait for 30 seconds…

  SIM900.println("ATH");   // hang up

}

 

void loop()

{

  callSomeone(); // call someone

  SIM900power();   // power off GSM shield

  do {} while (1); // do nothing

}

[GANEEV SINGH]

Hi Suman

I think you are making a mistake while writing the command: SIM900.println("ATD + +12128675309;"), there is no need of "+" sign between ATD and number. Try this way:

SIM900.println("ATD+12128675309;") and wait for the "OK" response. This ensure that the commcand has been executed successfully.

This might help you

[Author]

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