uart.c.bak

采用51单片机的串口模式来完成数据的传输和通行的

#include "..\51Training.h"
#include <stdio.h>

void UartInit()
{
	TMOD=0x21;      
   	TL1=0xff;TH1=0xff;
   	PCON=0x80;//SMOD=1;   	    	         	
   	SCON=0x50;ES=0;TR1=1;      	
}

char putchar (char x)
{
	SBUF=x;
	while(!TI);TI=0;
	return x;
}

char getchar (void)
{
	char x;
	while(!RI);RI=0;
	x=SBUF;
	return x;
}

void main()
{
	UartInit();
	printf("\r\n***************Uart Test Program***************");
	printf("\r\nPlease input some words:");
	while(1) putchar(getchar());
}