Microcontroller Serial in Keil, RS232, Serial Communication, C, avr, atmel

receiver.c

#include <REGX52.H>

void Serial() interrupt 4
{
	if(RI == 1)
	{
		P1 = SBUF;
		RI = 0;
	}
}


main()
{
	SCON = 0x50;
	TH2 = RCAP2H = 0xFF;
	TL2 = RCAP2L = 0xDC;
	T2CON = 0x34;
	 
	ES = 1;
	EA = 1;
	
	while(1)
	 ;
}

sender.c

#include <REGX52.H>

unsigned char i = 0;

void main()
{
	SCON = 0x50;
	TH2 = RCAP2H = 0xFF;
	TL2 = RCAP2L = 0xDC;
	T2CON = 0x34;
	ES = 1;

	while(1)
	{
		TI = 0;
		P1 = i;
		SBUF = i;
		while(TI==0)
		{;}
		
		i++;	
	}
}