lcd1602液晶时钟,指针数组
用1602显示,用单片机的定时写了一个时钟,可以显示年月日,时分秒和星期,都可以用按键调节,但是调节星期的时候会出现问题,能显示MON,和TUE,但是继续按下去会出现乱码WE,乱码TU,接下来只能显示一位字母和3个乱码,然后就会显示年月日的部分信息,00:,最后全都是乱码,求大佬帮助
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;//锁存器的段选和位选,关数码管
sbit rs=P1^0;
sbit rw=P1^1;
sbit lcden=P2^5;//lcd1602的控制信号
sbit s4=P3^0; //功能键
sbit s8=P3^1;//加键
sbit s12=P3^2;//减键
sbit rd=P3^7;
uchar count,s1num;
char miao,shi,fen,year,month,date;
uchar code table[]=" 2017-07-14 MON";
uchar code table1[]=" 00:00:00";
uchar *ptr[7] = {"MON","TUE","WED","THU","FRI","SAT","SUN"};//使得星期可调
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(uchar com) //lcd1602写命令
{
rs=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_date(uchar date) //lcd1602写数据
{
rs=1;
lcden=0;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init() //初始化
{
uchar num;
dula=0;
wela=0;
lcden=0;
// fen=59;
// miao=53;
// shi=23;
rw=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<16;num++)
{
write_date(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<12;num++)
{
write_date(table1[num]);
delay(5);
}
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void write_sfm(uchar add,uchar date) //写时分秒
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void write_ymd(uchar add,uchar date)//写年月日
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void keyscan() //
{ uchar const monday=0,i;
rd=0;
if(s4==0) //功能键按下
{
delay(5);
if(s4==0)
{ s1num++;//调节年月日,时分秒的标志位
while(!s4);//释放按键
if(s1num==1)
{
TR0=0;
write_com(0x80+0x40+10);
write_com(0x0f);
}
}
if(s1num==2)
{
write_com(0x80+0x40+7);
}
if(s1num==3)
{
write_com(0x80+0x40+4);
}
if(s1num==4)
{
write_com(0x80+5);
}
if(s1num==5)
{
write_com(0x80+7);
}
if(s1num==6)
{
write_com(0x80+10);
}
if(s1num==7)
{
write_com(0x80+14);
}
if(s1num==8)
{
s1num=0;
write_com(0x0c);
TR0=1;
}
}
if(s1num!=0) //
{
if(s8==0)
{
delay(5);
if(s8==0)
{
while(!s8);
if(s1num==1)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
// write_com(0x80+0x40+10);
}
if(s1num==2)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
write_com(0x80+0x40+7);
}
if(s1num==3)
{
shi++;
if(shi==24)
shi=0;
write_sfm(4,shi);
write_com(0x80+0x40+4);
}
if(s1num==4)
{
year++;
if(year==99)
year=0;
write_ymd(4,year);
write_com(0x80+4);
}
if(s1num==5)
{
month++;
if(month==13)
month=1;
write_ymd(7,month);
write_com(0x80+7);
}
if(s1num==6)
{
date++;
if(date==32)
date=1;
write_ymd(10,date);
write_com(0x80+10);
}
if(s1num==7)
{
monday++;//monday = 1
if(monday>6)
monday=0;
switch (monday)
{
case 0
}
/*
if(monday>6)
monday=0;
write_com(0x80+13);
for (i=0;i<3;i++)
{
write_date(*ptr[monday]++);
}
write_com(0x02); */
}
}
}
if(s12==0)
{
delay(5);
if(s12==0)
{
while(!s12);
if(s1num==1)
{
/* if(miao==0)
{
miao=59;
write_sfm(10,miao);
write_com(0x80+0x40+10);
}*/
miao--;
if(miao==-1)
miao=59;
write_sfm(10,miao);
write_com(0x80+0x40+10);
}
if(s1num==2)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
write_com(0x80+0x40+7); /
}
if(s1num==3)
{
shi--;
if(shi==-1)
shi=23;
write_sfm(4,shi);
write_com(0x80+0x40+4);
}
if(s1num==4)
{
year--;
if(year<17)
year=17;
write_ymd(4,year);
write_com(0x80+4);
}
if(s1num==5)
{
month--;
if(month<=0)
month=1;
write_ymd(7,month);
write_com(0x80+7);
}
if(s1num==6)
{
date--;
if(date<=0)
date=1;
write_ymd(10,date);
write_com(0x80+10);
}
}
}
}
}
void main()
{
init();
while(1)
{
keyscan();
}
while(1);
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if(count==18)
{
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(4,shi);
}
write_sfm(7,fen);
}
write_sfm(10,miao);
}
}