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//程序頭函數
#include <reg52.h>
//顯示函數
#include <display.h>
//宏定義
#define uint unsigned int
#define uchar unsigned char
#include <intrins.h>
#include "eeprom52.h"
#define Data_ADC0809 P1
//管腳聲明
sbit LED_wendu= P2^2;
sbit LED_yanwu= P2^1;
sbit baojing= P2^5;
sbit DQ = P2^0;
sbit fs=P3^4;
//ADC0809
sbit ST=P3^3;
sbit EOC=P3^6;
sbit OE=P3^2;
//按鍵
sbit Key1=P2^6;
sbit Key2=P2^7;
sbit Key3=P3^7;
signed char w; //溫度值全局變量
uint c; //溫度值全局變量
bit bdata flag=0;
//酒精含量變量
uchar temp;
uchar yushe_wendu;
uchar yushe_yanwu;
//按鈕模式|
uchar Mode=0;
//函數聲明
extern uchar ADC0809();
extern void Key();
/******************把數據保存到單片機內部eeprom中******************/
void write_eeprom()
{
SectorErase(0x2000);
byte_write(0x2000, yushe_wendu);
byte_write(0x2001, yushe_yanwu);
byte_write(0x2060, a_a);
}
/******************把數據從單片機內部eeprom中讀出來*****************/
void read_eeprom()
{
yushe_wendu = byte_read(0x2000);
yushe_yanwu = byte_read(0x2001);
a_a = byte_read(0x2060);
}
/**************開機自檢eeprom初始化*****************/
void init_eeprom()
{
read_eeprom(); //先讀
if(a_a != 1) //新的單片機初始單片機內問eeprom
{
yushe_wendu=50;
yushe_yanwu=45;
a_a = 1;
write_eeprom(); //保存數據
}
}
void delay(uint z)
{
uint i,j;
for(i=0;i<z;i++)
for(j=0;j<121;j++);
}
/*****延時子程序*****/
void Delay_DS18B20(int num)
{
while(num--) ;
}
/*****初始化DS18B20*****/
void Init_DS18B20(void)
{
unsigned char x=0;
DQ = 1; //DQ復位
Delay_DS18B20(8); //稍做延時
DQ = 0; //單片機將DQ拉低
Delay_DS18B20(80); //精確延時，大于480us
DQ = 1; //拉高總線
Delay_DS18B20(14);
x = DQ; //稍做延時后，如果x=0則初始化成功，x=1則初始化失敗
Delay_DS18B20(20);
}
/*****讀一個字節*****/
unsigned char ReadOneChar(void)
{
unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--)
{
DQ = 0; // 給脈沖信號
dat>>=1;
DQ = 1; // 給脈沖信號
if(DQ)
dat|=0x80;
Delay_DS18B20(4);
}
return(dat);
}
/*****寫一個字節*****/
void WriteOneChar(unsigned char dat)
{
unsigned char i=0;
for (i=8; i>0; i--)
{
DQ = 0;
DQ = dat&0x01;
Delay_DS18B20(5);
DQ = 1;
dat>>=1;
}
}
/*****讀取溫度*****/
unsigned int ReadTemperature(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0x44); //啟動溫度轉換
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0xBE); //讀取溫度寄存器
a=ReadOneChar(); //讀低8位
b=ReadOneChar(); //讀高8位
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10+0.5; //放大10倍輸出并四舍五入
return(t);
}
//=====================================================================================
//=====================================================================================
//=====================================================================================
/*****讀取溫度*****/
void check_wendu(void)
{
c=ReadTemperature()-5; //獲取溫度值并減去DS18B20的溫漂誤差
if(c<0) c=0;
if(c>=999) c=999;
}
//ADC0809讀取信息
uchar ADC0809()
{
uchar temp_=0x00;
//初始化高阻太
OE=0;
//轉化初始化
ST=0;
//開始轉換
ST=1;
ST=0;
//外部中斷等待AD轉換結束
while(EOC==0)
//讀取轉換的AD值
OE=1;
temp_=Data_ADC0809;
OE=0;
return temp_;
}
void Key()
{
//模式選擇
if(Key1==0)
{
while(Key1==0);
if(Mode>=3) Mode=0;
else
{
write_com(0x38);//屏幕初始化
write_com(0x0d);//打開顯示無光標光標閃爍
write_com(0x06);//當讀或寫一個字符是指針后一一位
Mode++;
switch(Mode)
{
case 1:
{
write_com(0x80+7);//位置
break;
}
case 2:
{
write_com(0x80+15);//位置
break;
}
case 3:
{
write_com(0x38);//屏幕初始化
write_com(0x0c);//打開顯示無光標無光標閃爍
Mode=0;
write_eeprom(); //保存數據
break;
}
}
}
}
if(Key2==0&&Mode!=0)
{
while(Key2==0);
switch(Mode)
{
case 1:
{
yushe_wendu++;
if(yushe_wendu>=99)
yushe_wendu=99;
write_com(0x80+6);
write_data(0x30+yushe_wendu/10);
write_data(0x30+yushe_wendu%10);
break;
}
case 2:
{
yushe_yanwu++;
if(yushe_yanwu>=255)
yushe_yanwu=255;
write_com(0x80+13);
write_data(0x30+yushe_yanwu/100);
write_data(0x30+yushe_yanwu%100/10);
write_data(0x30+yushe_yanwu%10);
break;
}
}
}
if(Key3==0&&Mode!=0)
{
while(Key3==0);
switch(Mode)
{
case 1:
{
yushe_wendu--;
if(yushe_wendu<=0)
yushe_wendu=0;
write_com(0x80+6);
write_data(0x30+yushe_wendu/10);
write_data(0x30+yushe_wendu%10);
break;
}
case 2:
{
yushe_yanwu--;
if(yushe_yanwu<=0)
yushe_yanwu=0;
write_com(0x80+13);
write_data(0x30+yushe_yanwu/100);
write_data(0x30+yushe_yanwu%100/10);
write_data(0x30+yushe_yanwu%10);
break;
}
}
}
delay(200);
write_com(0x38);//屏幕初始化
write_com(0x0c);//打開顯示無光標無光標閃爍
}
void main()
{
check_wendu();
check_wendu();
Init1602();
init_eeprom(); //開始初始化保存的數據
while(1)
{
temp=ADC0809();
check_wendu();
Key();
if(Mode==0)
{
Display_1602(yushe_wendu,yushe_yanwu,c,temp);
if(temp>=yushe_yanwu)
{
LED_yanwu=0;
baojing=0;
fs=0;
}
else
{
LED_yanwu=1;
}
if(c>=(yushe_wendu*10))
{
baojing=0;
LED_wendu=0;
}
else
{
LED_wendu=1;
}
if((temp<yushe_yanwu)&&(c<(yushe_wendu*10)))
{
baojing=1;
fs=1;
}
}
}
}

復制代碼

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