#include<reg51.h>
#include "UART_H_file.h"
sbit LED=P1^0;
void main()
{
   char Data_in;
   UART_Init();
   P1 = 0;
   LED = 1;
   while(1)
   {
       Data_in = UART_RxChar();
       if(Data_in == 'F')
       {
           LED = 0;
           UART_SendString("LED_ON");
       }
       else if(Data_in == 'B')
       {
           LED= 1;
           UART_SendString("LED_OFF");
       }
       else
       {
           UART_SendString("Select proper option");
       }
   }
}
void UART_Init()
{
   TMOD = 0x20;
   TH1 = 0xFD;
   SCON = 0x50;
   TR1 = 1;
}
void UART_TxChar(char Data)
{
   SBUF = Data;
   while (TI==0);
   TI = 0;
}
char UART_RxChar()
{
   char dat;
   while (RI==0);
   RI = 0;
   dat = SBUF;
   return(dat);
}
void UART_SendString(char *str)
{
   int i;
   for(i=0;str[i]!=0;i++)
   {
       UART_TxChar(str[i]);
   }
}