LCD和DS1302显示不正确，没有时间，是静止的00：00：80

只看该作者 · 2015-6-1 16:49

这样怎么办。。。。。。我在IO口已经上拉电阻但是没有效果。仿真也没问题
#define RST0()    RST=0
unsigned  char    time[]={0x00,0x0b,0x0b,0x02,0x01,0x01,0x0c};
//写入dat
void ds1302_write(unsigned char dat)
{
  uchar i;
  DDR_1();
  for (i=0;i<8;i++)
  {
if(dat & 0x01) IO1();
else  IO0() ;
dat=dat>>1;
SLCK0();_nop_();
SLCK1(); _nop_();
  }
}
//输出dat
unsigned char ds1302_read()
{
  uchar i;
  uchar dat=0x00;
  DDR_0();
  for (i=0;i<8;i++)
  {
SLCK1(); _nop_();
SLCK0();_nop_();
if(io()) dat |=(1<<i);
  }
  return dat/16*10+dat%16;
}
//读取指定地址adress中的dat
unsigned char  ds1302_readadress(unsigned char adress)
{
  uchar dat;
  RST0(); _nop_();
  SLCK0(); _nop_();
  RST1(); _nop_();
  ds1302_write(adress);
  dat=ds1302_read();
  SLCK1(); _nop_();
  RST0();  _nop_();
  return dat;
}
//在指定地址adress写入dat
void ds1302_writeadress(unsigned char adress ,unsigned char dat)
{
  RST0();  _nop_();
  SLCK0(); _nop_();
  RST1();  _nop_();
  ds1302_write(adress) ;
  ds1302_write(dat);
  SLCK1(); _nop_();
  RST0();
}

//读取时间
void ds1302_readtime()
{ uchar i;
  uchar adress=0x81;
  for (i=0;i<7;i++)
  {
  time=ds1302_readadress(adress);
  adress +=2;
_nop_();_nop_();
_nop_();_nop_();
  }
}

只看该作者 · 2015-6-1 16:49

程序是这样的/
sbit  RS=P2^0; //写信号
sbit  RWW=P2^1; //读信号
sbit  E=P2^2;  //使能信号
#define e1 E=1
#define rd1  RWW=1
#define rs1  RS=1
#define e0 E=0
#define rd0  RWW=0
#define rs0  RS=0
#define PP P0
//延时函数ms
void _delay_ms(uint t)
{
uint i,j;
for(i=0;i<t;i++)
   for(j=0;j<120;j++);
}
//延时函数us
void _delay_us(uchar t)
{
while(t>0)t--;
}
//写1602控制字
void  lcd1602_writecrtl(uchar  dat)
{
  rd0;//读信号置0
  rs0;//写信号置0
  _delay_us(5);
  PP=dat;
  e1;//使能信号置1
  _delay_us(5);
  e0;//使能信号置0
}
//写1602数据
void  lcd1602_writenumber(uchar dat)
{
  rd0;//读信号置0
  rs1;//写信号置1
  _delay_us(5);
  PP=dat;
  e1;//使能信号置1
  _delay_us(5);
  e0;//使能信号置0
}
//1602初始化
void  lcd1602_init()
{
  lcd1602_writecrtl(0x38); //显示模式
  lcd1602_writecrtl(0x06); //显示光标移动位置
  lcd1602_writecrtl(0x0c); //显示开及光标设置
  lcd1602_writecrtl(0x01); //显示清屏
}
//显示地址
void  lcd1602_adr(uchar dat)
{
  lcd1602_writecrtl(0x80 | dat);
}
//行显示-
void LCD1602_string(uchar hang,uchar lie,uchar const *p)
{
uchar a;
if(hang == 1) a = 0x00;
if(hang == 2) a = 0x40;
a = a + lie - 1;
lcd1602_adr(a);
while(1)
{
if(*p == '\0') break;
lcd1602_writenumber(*p);
p++;
}
}
//uchar code zifux[]="1234567812345678"
//LCD1602_string(1,1,zifux);
//LCD1602_string(2,1,zifux);

只看该作者 · 2015-6-1 16:50

#include <reg52.h>
#include <intrins.h>
#include <math.h>
#define uchar  unsigned char
#define uint unsigned int
//用液晶屏显示参数
uchar code zifx0[]="0123456789abcdef";
uchar code zifu0[]="Parking:5  Use:x";
uchar code zifu1[]=" 12:00:00    ";
uchar code zifu2[]=" Waiting    ";
uchar code zifu3[]=" Full...    ";
//按键
sbit key1=P2^3;
sbit key2=P2^4;
sbit key3=P2^5;
//报警
sbit beer=P2^7;
//信号
sbit s1=P1^0;
sbit s2=P1^1;
sbit s3=P1^2;
sbit s4=P1^3;
sbit s5=P1^4;
//判断车位标志
uchar bz1;
uchar bz2;
uchar bz3;
uchar bz4;
uchar bz5;
uchar use;
//报警
uchar bzb=0;
//显示
uchar bzx=0;
uint  jishu1;
#include "time.h"
#include "1602.h"
//蜂鸣器-------------
void beerc()
{
  beer=0; _delay_ms(40);  beer=1; _delay_ms(20);
}
//-------------------------------------------------------------
void ctrl()
{
  //读取时间------------------
  ds1302_readtime();
  //判断车位------------------
  if(s1==0)bz1=1;else bz1=0;
  if(s2==0)bz2=1;else bz2=0;
  if(s3==0)bz3=1;else bz3=0;
  if(s4==0)bz4=1;else bz4=0;
  if(s5==0)bz5=1;else bz5=0;
  use=bz1+bz2+bz3+bz4+bz5;
  //-显示使用
  lcd1602_adr(0x0f);
  lcd1602_writenumber(0x30+use%10);
  //-显示时分秒
  if(bzx==1)
  {
   lcd1602_adr(0x43);
   lcd1602_writenumber(0x30+time[2]%100/10);
   lcd1602_writenumber(0x30+time[2]%10);
   lcd1602_writenumber(':');
   lcd1602_writenumber(0x30+time[1]%100/10);
   lcd1602_writenumber(0x30+time[1]%10);
   lcd1602_writenumber(':');
   lcd1602_writenumber(0x30+time[0]%100/10);
   lcd1602_writenumber(0x30+time[0]%10);
  }
  //-车位状态
  if(bzx==0)
  {
   lcd1602_adr(0x43);
   if(use<5)
   {
   lcd1602_writenumber('W');
   lcd1602_writenumber('a');
   lcd1602_writenumber('t');
   lcd1602_writenumber('i');
   lcd1602_writenumber('n');
   lcd1602_writenumber('g');
   lcd1602_writenumber(' ');
   lcd1602_writenumber(' ');
   }
   if(use==5)
   {
   lcd1602_writenumber('F');
   lcd1602_writenumber('u');
   lcd1602_writenumber('l');
   lcd1602_writenumber('l');
   lcd1602_writenumber('.');
   lcd1602_writenumber('.');
   lcd1602_writenumber('.');
   lcd1602_writenumber('.');
   }
  }
  //-按键
  if(key1==0){bzx=1;if(use==5)bzb=1;while(key1==0);}
  if(key2==0){bzx=1;if(use==5)bzb=1;while(key2==0);}
  if(key3==0){bzb=0;while(key3==0);}

  if(bzb==1)beerc();
}
//主函数
void main()
{
  _delay_ms(1);
  //初始化
  lcd1602_init();
  LCD1602_string(1,1,zifu0);
  LCD1602_string(1,1,zifu0);
  LCD1602_string(2,1,zifu1);
//定时器0配置方式1 16
  TMOD|=0x01;
  //使能定时器0
  ET0=1;
  //定时器的初值
  TH0=(65536-50000)/256;
  TL0=(65536-50000)%256;
  //停止开启定时器0
  TR0=1;
  EA=1;
  while(1)
{
   ctrl();
}
}
//----T0 计数
void  Time0() interrupt 1
{
  TH0=(65536-50000)/256;
  TL0=(65536-50000)%256;
  if(bzx==1)
  {
jishu1=jishu1+1;
if(jishu1>60){jishu1=0;bzx=0;}
  }