单片机时钟和电压表 - - Powered by Discuz!

#include <reg52.h>
#include "XPT2046.h"
#define uchar unsigned char
#define uint unsigned int
uchar a;
sbit lcden=P2^7; //LDC1602读写使能
sbit rs=P2^6; //LCD1602寄存器
sbit rw=P2^5; //LCD1602读写
sbit s1=P3^0; //时钟暂停
sbit s2=P3^1; //时间减
sbit s3=P3^3; //时间加
sbit k3=P3^2; //中断开关，按下后跳到电压表
sbit LSA=P2^2; //三八译码器A口
sbit LSB=P2^3; //三八译码器B口
sbit LSC=P2^4; //三八译码器C口
int disp[4];
int code smgduan[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //数码管0到9
int code xiaoshu[10]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};
uchar count,s1num;
char miao,shi,fen;
uchar code table[]=" 2019-1-11 TIME ";
uchar code table1[]=" 00:00:00";
uchar code table2[]="student id:1840740128";
void delay(uint z) //延时
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(uchar com)
{
rs=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_date(uchar date)
{
rs=1;
lcden=0;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init()
{
uchar num;
lcden=0;
rw=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
for(num=0;num<15;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)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_date(0x30+shi);
write_date(0x30+ge);
}
void keyscan()
{
if(s1==0)
{
delay(5);
if(s1==0)
{ s1num++;
while(!s1);
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)
{
s1num=0;
write_com(0x0c);
TR0=1;
}
}
if(s1num!=0)
{
if(s2==0)
{
delay(5);
if(s2==0)
{
while(!s2);
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(s3==0)
{
delay(5);
if(s3==0)
{
while(!s3);
if(s1num==1)
{
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);
}
}
}
}
}
void timer0() interrupt 1 //定时器中断
{
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);
}
}
void datapros()
{
int temp;
static int i;
if(i==50)
{
i=0;
temp = Read_AD_Data(0xE4); // AIN3 外部输入
}
i++;
disp[3]=xiaoshu[temp/1000];//千位
disp[2]=smgduan[temp%1000/100];//百位
disp[1]=smgduan[temp%1000%100/10];//个位
disp[0]=smgduan[temp%1000%100%10];
}
//数码管显示函数
void DigDisplay()
{
int i;
for(i=0;i<4;i++)
{
switch(i) //位选，选择点亮的数码管，
{
case(0):
LSA=0;LSB=0;LSC=0; break;//显示第0位
case(1):
LSA=1;LSB=0;LSC=0; break;//显示第1位
case(2):
LSA=0;LSB=1;LSC=0; break;//显示第2位
case(3):
LSA=1;LSB=1;LSC=0; break;//显示第3位
}
P0=disp[i];//发送数据
delay(1); //间隔一段时间扫描
P0=0x00;//消隐
}
}
void dianyabiao()
{
datapros(); //数据处理函数
DigDisplay();//数码管显示函数
}
void shumaguan()
{
}
void main()
{
a=0;
IT0=0; //中断触发方式为低电平触发，IT0=1则为下边沿触发
EX0=1; //打开外部中断0
EA=1; //打开中断总开关
init();
while(1)
{
switch(a%2)
{
case 1:dianyabiao();break;
case 0:keyscan();break;
}
}
}
void INTERR(void) interrupt 0
{
if(k3==0)
{
while(1)
{
delay(100);
if(k3==1)
{
break;
}
}
a++;
delay(300);
}
}

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