51单片机水温水位检测调节程序,采用SR04、12864、DS1820 -

#include<reg52.h>
#include "12864.h"
#include "delay.h"
#include "sr04.h"
#include "ds18b20.h"
#include "delay.h"
#include "beep.h"
sbit s1=P1^2;
sbit s2=P3^7;
sbit KEY1=P1^3;
sbit KEY2=P1^4;
sbit KEY3=P1^5;
extern uchar table1[];
extern uint time,s;
extern uchar code table5[];
extern uchar code table6[];
uchar num,num2;
uchar j,mode;
uchar weidu=25;
uchar shuiwei=5;
uchar ge,si;
uchar set_w=25;
uchar set_s=2;
bit res;
int temp; //读取到的当前温度值
int intT, decT; //温度值的整数和小数部分
unsigned char len;
unsigned char str[12];
void get_temp();
unsigned char IntToString(unsigned char *str, int dat);
void judge();
void keyscan();
void main()
{
s1=0;s2=0; // 继电器关
Start18B20(); //启动DS18B20
lcd_init(); //液晶初始
TMOD=0X10; // 定时器
TH1=(65536-45872)/256;//50ms
TL1=(65536-45872)%256;
EA=1;
ET1=1;
TR1=1;
while(1) // 死循环
{
if((num==10)&&(mode==0)) // 500ms刷新时间和显示界面0
{
num=0;
get_temp(); sr04();// 获得温度距离
lcd_pos(0,3); j=0; // 显示距离
while(table1[j]!='\0' )
{
write_dat(table1[j]); j++;
}
}
if(mode==0)
{judge();} // 水位水温调节
keyscan();
}
}
void judge()
{
if(s<set_s) // 水位判断
{
s2=1; lcd_pos(1,5); j=0;
while(table6[j]!='\0' )
{
write_dat(table6[j]); j++;
}
BEEP=1;
}
else
{
s2=0; lcd_pos(1,5); j=0;
while(table5[j]!='\0' )
{
write_dat(table5[j]); j++;
}
BEEP=0;
}
if(intT<set_w) // 温度判断
{
s1=1;lcd_pos(3,6); j=0;
while(table6[j]!='\0' )
{
write_dat(table6[j]); j++;
}
}
else
{
s1=0;lcd_pos(3,6); j=0;
while(table5[j]!='\0' )
{
write_dat(table5[j]); j++;
}
}
}
void T1_time() interrupt 3
{
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
num++;
}
/* 整型数转换为字符串，str-字符串指针，dat-待转换数，返回值-字符串长度 */
unsigned char IntToString(unsigned char *str, int dat)
{
signed char i = 0;
unsigned char len = 0;
unsigned char buf[6];
if (dat < 0) //如果为负数，首先取绝对值，并在指针上添加负号
{
dat = -dat;
*str++ = '-';
len++;
}
do { //先转换为低位在前的十进制数组
buf[i++] = dat % 10;
dat /= 10;
} while (dat > 0);
len += i; //i最后的值就是有效字符的个数
while (i-- > 0) //将数组值转换为ASCII码反向拷贝到接收指针上
{
*str++ = buf[i] + '0';
}
*str = '\0'; //添加字符串结束符
return len; //返回字符串长度
}
void get_temp()
{
res = Get18B20Temp(&temp); //读取当前温度
if (res) //读取成功时，刷新当前温度显示
{
intT = temp >> 4; //分离出温度值整数部分
decT = temp & 0xF; //分离出温度值小数部分
len = IntToString(str, intT); //整数部分转换为字符串
str[len++] = '.'; //添加小数点
decT = (decT*10) / 16; //二进制的小数部分转换为1位十进制位
str[len++] = decT + '0'; //十进制小数位再转换为ASCII字符
while (len < 6) //用空格补齐到6个字符长度
{
str[len++] = ' ';
}
str[len] = '\0'; //添加字符串结束符
lcd_pos(2,3); j=0;
while(str[j]!='\0' ) // 显示温度
{
write_dat(str[j]);
j++;
}
}
else //读取失败时，提示错误信息
{
//LcdShowStr(0, 0, "error!");
}
Start18B20(); //重新启动下一次转换
}
void keyscan()
{
if(KEY1==0) // set
{
delay(5);
if(KEY1==0)
{
while(!KEY1);
mode++;
}
}
if(mode==1) //界面1
{
clear(); //界面1显示
if(KEY2==0)
{
delay(5);
if(KEY2==0)
{
shuiwei++;
if(shuiwei>9)
{shuiwei=9;}
}
}
if(KEY3==0)
{
delay(5);
if(KEY3==0)
{
shuiwei--;
if(shuiwei==255)
{shuiwei=0;}
}
}
lcd_pos(2,5);
write_dat(shuiwei+0x30);
write_dat( );
}
if(mode==2) //界面2
{
mode2();// 界面显示
if(KEY2==0)
{
delay(5);
if(KEY2==0)
{ while(!KEY2);
weidu++;
if(weidu>50)
{weidu=50;}
}
}
if(KEY3==0)
{
delay(5);
if(KEY3==0)
{ while(!KEY3);
weidu--;
if(weidu==255)
{weidu=0;}
}
}
ge=weidu%10;
si=weidu/10;
lcd_pos(2,5);
write_dat(si+0x30);
write_dat(ge+0x30);
}
if(mode==3)
{
mode=0;lcd_init();// 界面0 及显示
set_w=weidu;
set_s=shuiwei;
}
}

复制代码