8051 Development Board

/*
 * Project name:
    8051 Development Board
 * Copyright
     (c) Researchdesignlab.com
 * Description:
    
 * Test configuration:
     MCU:             AT89S52
     Dev.Board:       8051
     Oscillator:      11.0592 MHz
     Software:        Keil uVision3

*/

#include<reg51.h>

	unsigned char SCI_ReceiveByte( void );	
	void TRANSMIT(unsigned char *);
	void transmit_byte(unsigned char );
	void DELAY();

	void main()
{	
	unsigned char byte; 
	TMOD=0X20;
	TH1=0XFD;
	SCON=0X50;
	TR1=1;
	TRANSMIT("RESEARCH DESIGN LAB");
	DELAY();
	while(1)
	{
	byte=SCI_ReceiveByte();
	transmit_byte(byte);
	}

}
	void DELAY()
  	{
	unsigned int X=6000000;
	while(X--);

  	}


	void transmit_byte(unsigned char  byte)
	{
	SBUF=byte;
	while(!TI);
	TI=0;
	}
  
 	void TRANSMIT(unsigned char *string)
	{
	while(*string)
	transmit_byte(*string++);
	}	
	unsigned char SCI_ReceiveByte( void )
  	{
	unsigned char byte;
	while(RI!=1);
	byte = SBUF;
	RI=0;
	return byte;
  	}