本帖最后由 Seanwin 于 2017-3-27 16:38 编辑
设计LCD显示日期时间，现在先设计到时间。但是写出来的程序在设置时间时每按设置键s6和按增加s7各只作接低电平的键s9功能一样出现光标，可以移动，但是不能作“+”功能，“-”功能S8无作用。
各位高手能否看下我写的程序（如下），哪里写错了！！！
#include<reg52.h>
#define UCHAR unsigned char
#define UINT unsigned int
sbit lcdE=P3^4;
sbit lcdRs=P3^5;
sbit bitSeg=P2^6;
sbit bitPos=P2^7;
sbit keySet=P3^0;
sbit keyInc=P3^1;
sbit keyDec=P3^2;
sbit rd=P3^7;
UINT num,setNum,incNum,count,hh,mm,ss;
UCHAR code date[]="2017.03.24 SUN";
UCHAR code time[]="23:59:55";
UCHAR code timeAddr[]={0,1,3,4,6,7};
void delay(UINT t)
{
UINT x,y;
for(x=0;x<t;x++)
for(y=0;y<110;y++);
}
void write_com(UCHAR com)
{
lcdRs=0; //set the instruction signal(low level)
lcdE=0; //set the port of lcdE low level
P0=com; //send valid data to the port of P0
delay(5); //delay time
lcdE=1; //the clock latch signal input,and write the data to LCD1602
delay(5); //delay time
lcdE=0; //set the port of lcdE low level
}
void write_dat(UCHAR dat)
{
lcdRs=1; //set the data signal(hight level)
lcdE=0; //set the port of lcdE low level
P0=dat; //send valid data to the port of P0
delay(5); //delay time
lcdE=1; //the clock latch signal input,and write the data to LCD1602
delay(5); //delay time
lcdE=0; //set the port of lcdE low level
}
void write_time(UCHAR addr,UCHAR m)
{
UCHAR shi,ge;
shi=m/10;
ge=m%10;
write_com(0x80+0x44+addr);
write_dat(0x30+shi); //address reference character sheet
write_dat(0x30+ge); //address reference character sheet
}
//写到红色字段程序时，运行不如意。
void key_scan()
{
rd=0;
if(keySet==0)
{
delay(5);
if(keySet==0)
{
while(!keySet);
setNum++;
if(setNum<7)
{
TR0=0;
write_com(0x0f);
switch(setNum)
{
case 1:write_com(0x80+0x45);
break;
case 2:write_com(0x80+0x48);
break;
case 3:write_com(0x80+0x4b);
break;
case 4:write_com(0x0c);
setNum=0;
write_com(0x80+0x45);
TR0=1;
break;
default: ;break;
}
if(keyInc==0)
{
delay(5);
if(keyInc==0)
{
while(!keyInc)
switch(setNum)
{
case 1:hh++;
if(hh==60)
hh=0;
write_time(0,hh);
write_com(0x80+0x45);
break;
case 2:mm++;
if(mm==60)
mm=0;
write_time(3,mm);
write_com(0x80+0x48);
break;
case 3:ss++;
if(ss==60)
ss=0;
write_time(6,ss);
write_com(0x80+0x4b);
break;
default: ;break;
}
}
}
if(keyDec==0)
{
delay(5);
if(keyDec==0)
{
while(!keyDec)
switch(setNum)
{
case 1:hh--;
if(hh<0)
hh=0;
write_time(0,hh);
write_com(0x80+0x45);
break;
case 2:mm--;
if(mm<0)
mm=0;
write_time(3,mm);
write_com(0x80+0x48);
break;
case 3:ss--;
if(ss<0)
ss=0;
write_time(6,ss);
write_com(0x80+0x4b);
break;
default: ;break;
}
}
}
}
}
}
}
//set timer 50ms interrupt once
void timer() interrupt 1
{
TH0=0x4c; //{2^16-50000/[12*(1/11.0592)]}/256;
TL0=0x00;//{2^16-50000/[12*(1/11.0592)]}%256;
count++;
if(count==20) //count to 20 seconds
{
count=0;
ss++;
if(ss==60)
{
ss=0;
mm++;
if(mm==60)
{
mm=0;
hh++;
if(hh==24)
{
hh=0;
}
write_time(0,hh);
}
write_time(3,mm);
}
write_time(6,ss);
}
}
void init()
{
bitSeg=0; //close the nixie tube
bitPos=0; //close the nixie tube
TCON=0x31; //set T/C interrupt 0011 0001
IE=0x82; //set interrupt control 1000 0010
TMOD=0x01; //set timer mode 0000 0001
TH0=0x4c;
TL0=0x00;
hh=23;
mm=59;
ss=55;
lcdE=0;
write_com(0x01); //clear display
write_com(0x38); //set display mode
write_com(0x0c); //set display on and cursor appear
write_com(0x06); //increase address by one,shift cursor to the right
write_com(0x80+0x01); //set the address of date
for(num=0;num<14;num++) //initialization date
{
write_dat(date[num]);
delay(5);
}
write_com(0x80+0x44); //set the address of time
for(num=0;num<8;num++) //initialise time
{
write_dat(time[num]);
delay(5);
}
}
void main()
{
init();
while(1) //if there is no cycle, it will be initialized all the time
{
key_scan();
}
}
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