51单片机水温控制系统Proteus仿真程序 LCD1602显示 -

#include<reg52.h>
#include"1602.h"
#include"ds18b20.h"
#define uint unsigned int
#define uchar unsigned char
sbit speaker=P1^5; //定义蜂鸣器
sbit red=P2^0; //定义报警灯
//sbit green=P2^1;
sbit key1=P3^0; //定义温度按键
sbit key2=P3^1; //定义时间按键
uint tem; //定义采集温度
int htem,time; //定义温度、时间
int cnt1=1,cnt2=1; //定义计数变量
int min,i;
uchar mode=0; //定义模式变量
uchar code t3[]={"high temp: C"};
uchar code t4[]={"time: MIN"};
//延时函数
void delay1(uint i)
{
while(i--);
}
//显示函数1
void display(uint dat,uchar add)
{
uchar bai,shi ,ge;
bai=dat/100;
shi=dat%100/10;
ge=dat%10;
writelcd_cmd(add);
writelcd_dat(bai+0x30);
writelcd_dat(shi+0x30);
writelcd_cmd(add+3);
writelcd_dat(ge+0x30);
}
//显示函数2
void display2(uint dat,uchar add)
{
uchar bai,shi ;
bai=dat/100;
shi=dat%100/10;
//ge=dat%10;
writelcd_cmd(add);
writelcd_dat(shi+0x30);
writelcd_dat(bai+0x30);
writelcd_cmd(add+3);
//writelcd_dat(ge+0x30);
}
//显示函数3
void display3(uint dat,uchar add)
{
uchar ge;
//bai=dat/100;
//shi=dat%100/10;
ge=dat%10;
writelcd_cmd(add);
//writelcd_dat(shi+0x30);
//writelcd_dat(bai+0x30);
//writelcd_cmd(add+3);
writelcd_dat(ge+0x30);
}
//按键扫描函数
void keyscan()
{ uchar i,j;
writelcd_cmd(0x80);
for(i=0;i<16;i++)
{writelcd_dat(t3[i]);}
writelcd_cmd(0xc0);
for(j=0;j<16;j++)
{writelcd_dat(t4[j]);}
while(mode!=0)
{
display2(htem,0x8b);
display3(time,0xca);
while(mode!=0)
{
switch(mode)
{
case 1:writelcd_cmd(0xc0+10);writelcd_cmd(0x0f);break;
case 2:writelcd_cmd(0x80+11);writelcd_cmd(0x0f);break;
default:mode=0;break;
}
if(key1==0&&mode==1)
{
delay(50);
if(key1==0)
{
cnt1++;
while(key1==0);
switch(cnt1%10)
{
case 1:time=1;min=1000;display3(time,0xca);writelcd_cmd(0xca+11);break; //1分钟
case 2:time=2;min=2000;display3(time,0xca);writelcd_cmd(0xca+11);break; //2分钟
case 3:time=3;min=3000;display3(time,0xca);writelcd_cmd(0xca+11);break; //3分钟
case 4:time=4;min=4000;display3(time,0xca);writelcd_cmd(0xca+11);break; //4分钟
case 5:time=5;min=5000;display3(time,0xca);writelcd_cmd(0xca+11);break; //5分钟
case 6:time=6;min=6000;display3(time,0xca);writelcd_cmd(0xca+11);break; //6分钟
case 7:time=7;min=7000;display3(time,0xca);writelcd_cmd(0xca+11);break; //7分钟
case 8:time=8;min=8000;display3(time,0xca);writelcd_cmd(0xca+11);break; //8分钟
case 9:time=9;min=9000;display3(time,0xca);writelcd_cmd(0xca+11);break; //9分钟
default:break;
}
}
}
if(key2==0&&mode==2)
{
delay(10);
if(key2==0)
{
cnt2++;
while(key2==0);
switch(cnt2%4)
{
case 1:htem=20;display2(htem,0x8b);writelcd_cmd(0x80+11);break; //20摄氏度
case 2:htem=50;display2(htem,0x8b);writelcd_cmd(0x80+11);break; //50摄氏度
case 3:htem=80;display2(htem,0x8b);writelcd_cmd(0x80+11);break; //80摄氏度
default:break;
}
}
}
}
}
lcd_init();
}
//中断初始化函数
void init()
{
lcd_init(); //lcd初始化
speaker=1;
red=0;
mode=0;
htem=20;
time=1;
EA=1; //总中断开启
EX0=1; //外部中断0允许
ET0=1; //定时器0允许
TMOD=0X01; //定时中断0，模式1
IT0=1; //下降沿触发
TH0=0Xee; //0.5us
TL0=0X00;
//TR0=0;
}
//主函数
void main()
{
red=0;
init(); //中断初始化
while(1)
{
if(mode!=0)
{keyscan();}
else if(mode==0)
{
delay(100);
tmpchange();
tem=tmp(); //温度值获取
if(tem>=(htem*10)) //高于设定温度
{
TR0=1; //中断开启
red=1; //报警灯亮
}
else //低于设定温度
{
TR0=0; //中断关闭
red=0; //报警灯灭
}
delay(10);
display(tem,0xca);
delay(100);
TR0=0;
}
}
}
//外部中断服务函数
void exter()interrupt 0
{
delay(50); //按键消抖
if(P3^2==0)
mode++;
mode=mode%4 ; //每按4次置0
}
//定时中断服务函数
void timer0()interrupt 1
{
TH0=0Xee; //重装载
TL0=0X00;
min--;
if(min<=0) //计时时间到
{
red=1; //报警灯闪烁
delay(200);
speaker=~speaker;delay1(1); //蜂鸣器报警
TR0=0; //定时中断关闭
}
}

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