(INCOMPLETE) Standard C++ Codes for Data Exchange between Arduino UART and PC (Polling Method)

(INCOMPLETE) Standard C++ Codes for Data Exchange between Arduino UART and PC (Polling Method)

#include <Arduino.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(A0,A1,A2,A3,A4,A5);

void setup()
{
    lcd.begin(16,2);
    lcd.clear();
    lcd.setCursor(5,0);
pinMode(13,OUTPUT);

    bitWrite(UCSR0B,4,1); /// L11 : PDO as RXD
    bitWrite(UCSR0B,3,1); /// L12 : PD1 as TXD
    bitWrite(UCSR0C,6,0); ///UMSEL1 = 0
    bitWrite(UCSR0C,7,0); /// UMSEL1 = 0 : SET ASYNCHRONUS MODE

    UBRR0H=0x00;
    UBRR0L=0xCF; /// SELECTED 4800 BAUD

    bitWrite(UCSR0B,2,0);
    bitWrite(UCSR0C,2,1);
    bitWrite(UCSR0C,1,1); /// 8 data bit

    /// Send A by polling UDRE0
    while(bitRead(UCSR0A,5) !=HIGH) ///L16: Wait for TX To be empty
    {

    }

UDR0=0x41; ///ASCII of A written on TX Register


while(bitRead(UCSR0A,5)!=HIGH)
{

}
UDR0=0x0D; /// CARRIAGE RETURN CODE

while(bitRead(UCSR0A,5) !=HIGH)
{

}

UDR0 = 0x0A; ///LINE FEED

while(bitRead(UCSR0A,7) !=HIGH) ///WAIT RXC0 to get high
{

}

byte x1=UDR0; /// Read Data
lcd.write(x1); /// Show On LCD

///SEND A by polling TXC0

lcd.setCursor(5,1);

bitWrite(UCSR0A,6,1); /// Make TX Register Ready to Recieve data by Making TXC0 Reset (LOGIC HIGH RESETS IT)

while(bitRead(UCSR0A,6) !=HIGH)
{

} /// Wait for TXC0 To get high

UDR0=0x41; /// L18C : ASCII For A

while(bitRead(UCSR0A,5)!=HIGH)
{

}
UDR0=0x0D; /// CARRIAGE RETURN CODE

while(bitRead(UCSR0A,5) !=HIGH)
{

}

UDR0 = 0x0A; ///LINE FEED


while(bitRead(UCSR0A,7) !=HIGH) ///WAIT RXC0 to get high
{

}

byte x2=UDR0; /// Read Data
lcd.write(x2); /// Show On LCD

}

void loop()
{

}