CODE

/*
 THIS CODE PROGRAM WITH C++
Program to test 16*2 Alaphanumeric LCD with STM32 (Blue Pill) 

For: www.circuitdigest.com

  The circuit:

 * LCD RS pin to digital pin PB11

 * LCD Enable pin to digital pin PB10

 * LCD D4 pin to digital pin PB0

 * LCD D5 pin to digital pin PB1

 * LCD D6 pin to digital pin PC13

 * LCD D7 pin to digital pin PC14

 * LCD R/W pin to ground

 * LCD VSS pin to ground

 * LCD VCC pin to 5V

*/


#include <LiquidCrystal.h> // include the LCD library

const int rs = PB11, en = PB10, d4 = PB0, d5 = PB1, d6 = PC13, d7 = PC14; //mention the pin names to with LCD is connected to 

LiquidCrystal lcd(rs, en, d4, d5, d6, d7); //Initialize the LCD

int a;
PinMode(PA0,INPUT);

void setup() {

  LDR= analogRead(PA0);


  lcd.print(a);

  lcd.begin(16, 2);//We are using a 16*2 LCD

   //At first row first column 

  lcd.print("Interfacing LCD"); //Print this

  lcd.setCursor(0, 1); //At secound row first column 

  lcd.print("gHASEM KOJAIE?"); //Print this


  delay(2000); //wait for two secounds 

  lcd.clear(); //Clear the screen

}

void loop() {

  lcd.setCursor(0, 0); //At first row first column 

  lcd.print("MEHRDAD--RAEEN"); //Print this

  lcd.setCursor(0, 1); //At secound row first column 

  lcd.print(millis() / 1000); //Print the value of secounds

}