-1

hi it is my code to send "hello world" to my phone number with ardiuno and sim800l but i get Error and when i use "gsm.println("at+cmee=1");" i will get cms error 305 what is your suggestion to send normal sms with ardiuno and sim800l?

    void sends()
  {
  Serial.println("try send sms");
  gsm.println("AT+CSCS=\"GSM\"");
  delay(500);
  gsm.println("at+cmee=0");
 if(gsm.available())
  {
    txt1 = gsm.readString();
    Serial.println(txt1);
  }
  gsm.println("at+cmgf=1");
 delay(500);

 
 if(gsm.available())
  {
    txt1 = gsm.readString();
    Serial.println(txt1);
  }

 
delay(500);
  gsm.print("at+cmgs=\"+98914xxxxxxx\"");
  delay(50);
gsm.println("HELLO WORLD");
delay(50);
gsm.println((char)26);

 // gsm.write(26);
delay(500);
  if(gsm.available())
  {
    txt1 = gsm.readString();
    Serial.println(txt1);
  }
}

how can i send sms in ardiuno?

this link suggested by a friend +CMS ERROR: 305 when sending SMS but it is vb and i used gsm.println("AT+CSCS="GSM"");

hesam sadig bayan
  • 1
  • 4

1 Answers1

0

Change

gsm.print("at+cmgs=\"+98914xxxxxxx\"");

to

gsm.println("at+cmgs=\"+98914xxxxxxx\"");

The AT command need to be terminated by a \r\n before you inputing your sms message.

hcheung
  • 3,377
  • 3
  • 11
  • 23