#include <LiquidCrystal.h> 
LiquidCrystal lcd(PA0, PA1, PA2, PA3, PA4, PA5);
float POT_RV;
float VOLTAGE;

void setup() 
{
  Serial.begin(9600);
  lcd.begin(20, 4);
  lcd.clear(); 
  lcd.setCursor(3, 1);  
  Serial.println("STM32 BLUEPILL WITH LCD");         
  lcd.print("STM32 BLUE PILL");  
  lcd.setCursor(5, 2);          
  lcd.print("WITH LCD"); 
  delay(2000);  
  lcd.clear();    
  lcd.setCursor(3, 1);         
  lcd.print("Voltage= ");     
}

void loop() 
{ 
  POT_RV = analogRead(PB1);
  VOLTAGE = ((POT_RV * 5)/4095);
  Serial.println(VOLTAGE);
  delay(500);  
  lcd.setCursor(12, 1);
  lcd.print(VOLTAGE); 
}