Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol.

ANSWER:-

AIM:-In this project implementing the Code for “Interfacing a 16*2 LCD with two Arduino’s (one for Master and one for Slave) using Inter-Integrated Circuit (I2C) communication protocol” by sending the message to LCD using I2C communication protocol and display the message on LCD screen.

GOALS:-

• Communication between Arduino and 16*2 LCD using I2C protocol.
• Displaying the message sent by Master and received by slave i.e. LCD display.                                                                                                                                                                                                                                                    CODE OF THE PROJECT:-

  //I2C MASTERCODE
  //I2C communication between two arduino
  #include //Library for I2C Communication functions
  #include //Library for LCD display function
  LiquidCrystal lcd(2, 7, 8, 9, 10, 11); //Define LCD Module Pins (RS,EN,D4,D5,D6,D7)

  void setup()

  {
  lcd.begin(16,2); //Initilize LCD display
  lcd.setCursor(0,0); //Sets Cursor at first line of Display
  lcd.print("CYIENT"); //Prints CIRCUIT DIGEST in LCD
  lcd.setCursor(0,1); //Sets Cursor at second line of Display
  lcd.print("I2C MASTER ARDUINO"); //Prints I2C ARDUINO in LCD
  delay(5000); //Delay for 5 seconds
  lcd.clear(); //Clears LCD display
  Serial.begin(9600); //Begins Serial Communication at 9600 baud rate
  Wire.begin(); //Begins I2C communication at pin (A4,A5)
  }

  void loop()

  {
  Wire.requestFrom(8,1); // request 1 byte from slave arduino (8)
  byte MasterReceive = Wire.read(); // receive a byte from the slave arduino and store in MasterReceive
  int potvalue = analogRead(A0); // Reads analog value from POT (0-5V)
  byte MasterSend = map(potvalue,0,1023,0,127); //Convert digital value (0 to 1023) to (0 to 127)
  
  Wire.beginTransmission(8); // start transmit to slave arduino (8)
  Wire.write(MasterSend); // sends one byte converted POT value to slave
  Wire.endTransmission(); // stop transmitting
  lcd.setCursor(0,0); //Sets Currsor at line one of LCD
  lcd.print(">> Master <<"); //Prints >> Master << at LCD
  lcd.setCursor(0,1); //Sets Cursor at line two of LCD
  lcd.print("SlaveVal:"); //Prints SlaveVal: in LCD
  lcd.print(MasterReceive); //Prints MasterReceive in LCD received from Slave
  Serial.println("Master Received From Slave"); //Prints in Serial Monitor
  Serial.println(MasterReceive);
  delay(500);
  lcd.clear();
  
  }

  //I2C SLAVE CODE
  //I2C Communication between Two Arduino
  #include //Library for I2C Communication functions
  #include //Library for LCD display function
  LiquidCrystal lcd(2, 7, 8, 9, 10, 11); //Define LCD Module Pins (RS,EN,D4,D5,D6,D7)

  byte SlaveReceived = 0;

  void setup()

  {
  lcd.begin(16,2); //Initilize LCD display
  lcd.setCursor(0,0); //Sets Cursor at first line of Display
  lcd.print("CYIENT"); //Prints CIRCUIT DIGEST in LCD
  lcd.setCursor(0,1); //Sets Cursor at second line of Display
  lcd.print("I2C SLAVE ARDUINO"); //Prints I2C ARDUINO in LCD
  delay(5000); //Delay for 5 seconds
  lcd.clear(); //Clears LCD display
  Serial.begin(9600); //Begins Serial Communication at 9600 baud rate
  Wire.begin(8); //Begins I2C communication with Slave Address as 8 at pin (A4,A5)
  Wire.onReceive(receiveEvent); //Function call when Slave receives value from master
  }

  void loop(void)
  {
  lcd.setCursor(0,0); //Sets Currsor at line one of LCD
  lcd.print(">> Slave <<"); //Prints >> Slave << at LCD
  lcd.setCursor(0,1); //Sets Cursor at line two of LCD
  lcd.print("MasterVal:"); //Prints MasterVal: in LCD
  lcd.print(SlaveReceived); //Prints SlaveReceived value in LCD received from Master
  Serial.println("Slave Received From Master:"); //Prints in Serial Monitor
  Serial.println(SlaveReceived);
  delay(500);
  lcd.clear();
  
  }

  void receiveEvent (int howMany) //This Function is called when Slave receives value from master
  {
  SlaveReceived = Wire.read(); //Used to read value received from master and store in variable SlaveReceived
  }

  OUTPUT:-
• i have attached output in the below file.