时钟三：用内部中断实现时钟

root_robot

于 2016-09-14 19:39:25 发布

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CC 4.0 BY-SA版权

分类专栏：单片机文章标签：单片机时钟内部中断

本文链接：https://blog.youkuaiyun.com/root_robot/article/details/52541058

主文件：

#include <reg52.h>
#include "./delay/delay.h"

#define PORTLEN P0

sbit key1 = P3^2;
sbit key2 = P2^3;
sbit bit_select = P2^0;
sbit seg_select = P2^1;

unsigned char duanma[16] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned char weima[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char second1[8] = (0x3f,0x3f,0x40,0x3f,0x3f,0x40,0x3f,0x3f);
unsigned char shi = 0;
unsigned char fen = 0;
unsigned char miao = 0;
static unsigned char i = 0;

void display()
{
	  static unsigned char i = 0;
	  PORTLEN = 0x0;   //ÏûÖØÓ°
	  seg_select = 1;
	  seg_select = 0;
	
	  PORTLEN = 0xff;
	  bit_select = 1;
	  bit_select = 0;

	  PORTLEN = second1[i];
	  seg_select = 1;
	  seg_select = 0;
	
	  PORTLEN = weima[i];
	  bit_select = 1;
	  bit_select = 0;

	  i++;
	  if(8

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