I am using SIM900A based GSM module and doing some stuff related to sending and receiving SMS.What i want to do is to revert back on the same number from where a specific message come.For that i need to know the number of the person from where that SMS come.
what i am doing right now is printing all the information on a 16*2 LCD instead of serial port(though i tried to print all the data which is coming from serial port using software serial and a RS232 but only AT command get printed and nothing else. )
I am using these command to initiate GSM module in text mode and get notification for every arrived new SMS.
is there is any At command which give information regarding from where the last SMS come i.e. its Number so that i can save that number in a variable and revert back on the same number.
yes i had looked in the AT command manual for SIM900A and came to know about AT+CMGR command.I want to ask that what command should i send through serial.println , so that it revert me back with the OA only, or it will always revert me back with all the data, that is described there i.e.
,,....................till .
Because if there is a command which make me get only Originating address , than its a bit easy for me, to revert on the same number, or if i get the whole string, i need to store that string in buffer and then parse it to get the number using strtok function.Am i right?
Also i am facing one more problem that when ever i am sending any message using below code, it is always being delivered in flash message format instead of a simple text message.I don't know where i am messing up.
oid setup()
{
Serial.begin(9600); //Baud rate of the GSM/GPRS Module
Serial.print("\r");
delay(1000);
Serial.print("AT+CMGF=1\r");
delay(1000);
Serial.print("AT+CMGS="+91XXXXXXXXXX"\r"); //Number to which you want to send the sms is XXXXXXXXXX
delay(1000);
Serial.print("THIS IS A TEST MESSAGE \r"); //The text of the message to be sent
delay(1000);
Serial.write(0x1A);
delay(1000);
}
void loop()
{
}