text1.c

单片机快速入门原程序

#include <reg51.h>
#include<stdio.h>
Uart_Init();
sbit P10=0x90;
sbit P32=0xB2;
xdata int nCounter=0;
char Table[10]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90};
main()
{ 
	Uart_Init();
	EX0=1;		/* 外部中断0允许 */
	EA=1;		/* 全局中断允许 */
	while(1)
	{	;
	}
}

void Int0() interrupt 0 using 0
{
	if(nCounter>9)	 
	{nCounter=0;
	}
	P1=Table[nCounter];
	printf("LED displayed %d\n",nCounter);
	nCounter++;

}
Uart_Init()
	{SCON = 0x52;    /* 设置串行口控制寄存器SCON*/
	 TMOD = 0x21;    /* 12M时钟时波特率为2400  */
	 TCON = 0x69;    /* TCON */
	 TH1 =  0xf3;    /* TH1 */
	}