GSM 800L and Arduino Mega communication

Projects Programming
1

Hi all

I created a project utilising a Mega2560, GSM 800L, and Nextion display.GSM will deliver the SMS when I provide the command using Nextion.Nextion will display "Success" or "Failed" after the sms has been sent.
So, after sending the SMS GSM, I opted to read the AT Command response over serial communication.

After sms sent,GSM response is here

AT+CMGS="+649575610284"
> Current HMR: 3558
> 
+CMGS: 115

OK

if i received the +CMGS: command from GSM display will shows "Success".

i have tried ,but its not get success

Here is my code

void sendSMS1(char * message4)
{

 EEPROM.get(addr_Ph1,adminNumber);
  x=String(adminNumber);//+("\"");
  String sendnum = String ("\"")+"+91"+(x)+("\"");
  
 

   GPRS.print("AT+CMGS=");
   GPRS.println(sendnum);
  delay(1000);
  GPRS.println (message4);
   delay(1000);
  GPRS.write( 0x1a ); // ctrl+Z character
  delay(1000);
  
 if (GPRS.available())
  {
    String indata = GPRS.readString();
   Serial.println(indata);
  

  if (indata.indexOf ("+CMGS:") > -1)
  {
    byte position1 = indata.indexOf("+CMGS:");
   
    Serial.println(position1);
   
  }
  }
}

Arduino read all content
How can i derived only +CMGS: from the all content
S/o Out put

AT+CMGS="+649575610284"
> Current HMR: 3558
> 
+CMGS: 115

51

Please advice .

2

seeking help from members

3

Kindly help me!!!

4

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