GSM 800Lconfiguration with Arduino Bangla Tutorial Part 01

GSM 800Lconfiguration with Arduino Bangla Tutorial  Part 01

#include <SoftwareSerial.h>

//Create software serial object to communicate with SIM800L

SoftwareSerial mySerial(3, 2); //SIM800L Tx & Rx is connected to Arduino #3 & #2

void setup()

{

  //Begin serial communication with Arduino and Arduino IDE (Serial Monitor)

  Serial.begin(9600);

  

  //Begin serial communication with Arduino and SIM800L

  mySerial.begin(9600);

  Serial.println("Initializing...");

  delay(1000);

  mySerial.println("AT"); //Once the handshake test is successful, it will back to OK

  updateSerial();

  mySerial.println("AT+CSQ"); //Signal quality test, value range is 0-31 , 31 is the best

  updateSerial();

  mySerial.println("AT+CCID"); //Read SIM information to confirm whether the SIM is plugged

  updateSerial();

  mySerial.println("AT+CREG?"); //Check whether it has registered in the network

  updateSerial();

}

void loop()

{

  updateSerial();

}

void updateSerial()

{

  delay(500);

  while (Serial.available()) 

  {

    mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port

  }

  while(mySerial.available()) 

  {

    Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port

  }

}