为什么我的lcd1602一直是两排白块，老师说我的是程序有问题但是我不会改有没有大佬帮忙看看。因为我是在网上找的别人51的程序，改成15的。老师说我的延时函数有问题但是我自己改了一下因为不知道原来是延时多久我也不会改。有没有大佬帮忙看看为什么我的lcd1602一直是两排白板
#include "stc15.h"
#include <intrins.h>
#define uchar unsigned char
#define unit unsigned int
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
sbit key0=P1^0;//功能键
sbit key1=P1^1;//光标的移动
sbit key2=P1^2;//加
sbit key3=P1^3;//减
sbit buz=P2^7;//蜂鸣器
sbit in1=P1^4;
sbit in2=P1^6;
sbit led=P3^7;//led
sbit hood=P1^7;
unsigned char count=0;
unsigned int hour=0,min=0,sec=0;
unsigned int alarm_h=0,alarm_m=0;
unsigned char str_sw0[]={"off"};
unsigned char str_sw1[]={"on"};
unsigned char str[]={"0123456789"};
unsigned int readtemp=0;
unsigned char a[]={"alarm:"};
unsigned int w=-1,pattern=0,sw=0;
unsigned int i=0;
unsigned char s[]={"T:"};
void delay();
void beep();
void delay(unsigned int t);
void writecom(unsigned char com);
void writedat(unsigned char dat);
void initlcd();
void display_time();
void display_alarm();
void inittimer();
void function();
void main();
void delayms(unsigned int q)//延时函数
{
unsigned int w=0,e=0,k=1;
k=10*q;
for(w=0;w<k;w++)
{
for(e=0;e<120;e++);
}
}
void delay(unsigned int t)//延时函数
{
unsigned int i=0,j=0;
for(i=0;i<t;i++)
{
for(j=0;j<120;j++);
}
}
//************************LCD1602************************//
void writecom(unsigned char com)//写命令
{
RS=0;
RW=0;
E=0;
P0=com;
delayms(2);
E=1;
E=0;
}
void writedat(unsigned char dat)//写数据
{
RS=1;
RW=0;
E=0;
P0=dat;
delayms(2);
E=1;
E=0;
}
void initlcd() // lcd1602初始化
{
writecom(0x38);//设置16*2显示,5*7点阵,8位数据接口
writecom(0x0c);//设置开显示,不显示光标
writecom(0x06);//写一个字符后地址指针加1
writecom(0x01);//显示清0,数据指针清0
}
void display_time()//时间显示
{
unsigned char temp0=0,temp1=0,temp2=0,temp3=0,temp4=0,temp5=0;
temp0=hour/10;//拆分个位十位
temp1=hour%10;
temp2=min/10;
temp3=min%10;
temp4=sec/10;
temp5=sec%10;
writecom(0x80+0x40);//第二行显示
delay(2);
writedat(str[temp0]);//显示时分秒
delay(2);
writedat(str[temp1]);
delay(2);
writedat(':');
delay(2);
writedat(str[temp2]);
delay(2);
writedat(str[temp3]);
delay(2);
writedat(':');
delay(2);
writedat(str[temp4]);
delay(2);
writedat(str[temp5]);
delay(2);
}
void display_alarm()//闹钟显示
{
unsigned char temp0=0,temp1=0,temp2=0,temp3=0,i=0,j=0;
writecom(0x80);
delay(2);
temp0=alarm_h/10;//拆分个位十位
temp1=alarm_h%10;
temp2=alarm_m/10;
temp3=alarm_m%10;
while(a[i]!='\0')
{
writedat(a[i]);
delay(5);
i++;
}
writecom(0x80+15);
delay(2);
if(sw==0)
{
writedat('0');
}
if(sw==1)
{
writedat('1');
}
delay(2);
writecom(0x80+0x40+5);
delay(2);
writedat(str[temp0]);
delay(2);
writedat(str[temp1]);
delay(2);
writedat(':');
delay(2);
writedat(str[temp2]);
delay(2);
writedat(str[temp3]);
delay(2);
}
//**************************定时器************************//
void inittimer()//定时器初始化
{
TMOD=0x01;
TH0=0x3c;//50ms
TL0=0xb0;
ET0=1;//开启定时器0的中断
EA=1;//开启总中断
TR0=1;//启动定时器0
}
//***********************调时功能*********************//
void function()//调时,闹钟功能
{
unsigned int key1sum=0,key2sum=0;
if(key0==0)//判断按键是否按下
{
delay(10);//消抖
if(key0==0)
{
if(pattern<1)
{
pattern++;
}
else pattern=0;
while(!key0);//等待松开
}
}
if(pattern==0)//时间界面
{
if(key1==0)//判断是否按下
{
delay(10);
if(key1==0)
{
while(!key1);//等待松开
if(key1sum<3)//按几下光标移到哪一位
{key1sum++;
EA=0;}
else key1sum=0;
if(key1sum==1)
{
writecom(0x80+0x40+7);//移动到秒
writecom(0x0e); //光标显示
while(1)
{
if(key1==0)
{
delay(10);
if(key1==0)
{
while(!key1);
key1sum=2;
break;
}
}
if(key2==0) //秒归零
{
delay(10);
if(key2==0)
{
while(!key2);
sec=0;
display_time();
writecom(0x80+0x40+7);
}
}
if(key3==0) //秒归零
{
delay(10);
if(key3==0)
{
while(!key3);
sec=0;
display_time();
writecom(0x80+0x40+7);
}
}
}
}
if(key1sum==2)
{
writecom(0x80+0x40+4);//移动到分
writecom(0x0e); //光标显示
while(1)
{
if(key1==0)
{
delay(10);
if(key1==0)
{
while(!key1);
key1sum=3;
break;
}
}
if(key2==0)//加
{
delay(10);
if(key2==0)
{
while(!key2);
min++;
if(min==60)//最高为60分
{min=0;}
display_time();
writecom(0x80+0x40+4);
}
}
if(key3==0) //减
{
delay(10);
if(key3==0)
{
while(!key3);
if(min>0)
{min--;}
display_time();
writecom(0x80+0x40+4);
}
}
}
}
if(key1sum==3)
{
writecom(0x80+0x40+1);//移动到时
writecom(0x0e); //光标显示
while(1)
{
if(key1==0)
{
delay(10);
if(key1==0)
{
while(!key1);
key1sum=0;
break;
}
}
if(key2==0)//加
{
delay(10);
if(key2==0)
{
while(!key2);
hour++;
if(hour==24)//最高为24时
{hour=0;}
display_time();
writecom(0x80+0x40+1);
}
}
if(key3==0) //减
{
delay(10);
if(key3==0)
{
while(!key3);
if(hour>0)
{hour--;}
display_time();
writecom(0x80+0x40+1);
}
}
}
}
if(key1sum==0)//跑时钟
{
EA=1;
writecom(0x0c);
}
}
}
}
if(pattern==1)//闹钟界面
{
if(key1==0) //开关闹钟
{
delay(10);
if(key1==0)//检验是否按下
{
while(!key1);//等待按键松开
if(sw==0)
{sw=1;}
else sw=0;
display_alarm();
}
}
if(key2==0)//检测key2是否摁下 //设置闹钟
{
delay(10);
if(key2==0)
{
while(!key2);//等待松开
if(key2sum<2)
{key2sum++;}
else key2sum=0;
if(key2sum==1)
{
writecom(0x80+0x40+6);//移动到时
writecom(0x0e); //打开光标
while(1)
{
if(key2==0)
{
delay(10);
if(key2==0)
{
while(!key2);
key2sum=2;
break;
}
}
if(key3==0)
{
delay(10);
if(key3==0)
{
while(!key3);
alarm_h++;
if(alarm_h==24)
{alarm_h=0;}
display_alarm();
writecom(0x80+0x40+6);
}
}
}
}
if(key2sum==2)
{
writecom(0x80+0x40+9);//移动到分
writecom(0x0e); //打开光标
while(1)
{
if(key2==0)
{
delay(10);
if(key2==0)
{
while(!key2);
key2sum=0;
break;
}
}
if(key3==0)
{
delay(10);
if(key3==2)
{
while(!key3);
alarm_m++;
if(alarm_m==60)
{alarm_m=0;}
display_alarm();
writecom(0x80+0x40+9);
}
}
}
}
if(key2sum==0) //设置完毕,归位
{
writecom(0x0c);
}
}
}
}
}
void main()
{
unsigned int flag0=0,flag1=0,flag2=0;
initlcd();
inittimer();
P0M1 = 0; P0M0 = 0; //设置为准双向口
P1M1 = 0; P1M0 = 0; //设置为准双向口
P2M1 = 0; P2M0 = 0; //设置为准双向口
P3M1 = 0; P3M0 = 0; //设置为准双向口
P4M1 = 0; P4M0 = 0; //设置为准双向口
P5M1 = 0; P5M0 = 0; //设置为准双向口
P6M1 = 0; P6M0 = 0; //设置为准双向口
P7M1 = 0; P7M0 = 0; //设置为准双向口
buz=1;
while(1)
{
function();
if(pattern==0)//时间界面
{
if(flag0==0)
{
writecom(0x40);
flag0=2;
}
display_time();
flag1=0;
}
if(pattern==1)//闹钟界面
{
if(flag1==0)
{
writecom(0x01);
flag1=2;
}
display_alarm();
flag0=0;
}
if((sw==1&&hour==alarm_h&&min==alarm_m&&hood==1&&in1==1)||(sw==1&&hour==alarm_h&&min==alarm_m&&hood==1&&in2==1))
{
delay();
while((sw==1&&hour==alarm_h&&min==alarm_m&&hood==1&&in1==1)||(sw==1&&hour==alarm_h&&min==alarm_m&&hood==1&&in2==1))
{
beep();
}
}
if((sw==1&&hour==alarm_h&&min>=alarm_m&&in1==1&&hood==1)||(sw==1&&hour==alarm_h&&min>=alarm_m&&in2==1&&hood==1))
{
delay();
while((sw==1&&hour==alarm_h&&min>=alarm_m&&in1==1&&hood==1)||(sw==1&&hour==alarm_h&&min>=alarm_m&&in2==1&&hood==1))
{
beep();
}
}
if((sw==1&&hour>=alarm_h&&in1==1&&hood==1)||(sw==1&&hour>=alarm_h&&in2==1&&hood==1))
{
delay();
while((sw==1&&hour>=alarm_h&&in1==1&&hood==1)||(sw==1&&hour>=alarm_h&&in2==1&&hood==1))
{
beep();
}
}
if(hood==1)
led=1;
if(hood==0)
led=0;
}
}
void beep()
{
for(i=0;i<100;i++)
{
delay();
buz=~buz;
EA=1;
}
}
void timer0_isr() interrupt 1 //定时器中断服务函数
{
count++;
if(count==19)//1s
{
sec++;
count=0;
}
if(sec==60)
{
min++;
sec=0;
}
if(min==60)
{
hour++;
min=0;
}
if(hour==24)
{
hour=0;
}
} |
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