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#include <reg52.h> /////////////頭文件
////////////////////////////////////////////////////////////////////////////
void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str);
void ConfigTimer0(unsigned int ms);
unsigned char IntToString(unsigned char *str, int dat);
extern bit Start18B20();
extern bit Get18B20Temp(int *temp);
extern void InitLcd1602();
bit DHT_Start();
void aj (void);
bit DHT_ByteRead(unsigned char *dat);
/////////////////////////////////////////////////////////////////////
sbit K1=P1^4; ///引腳聲明
sbit K2=P1^5;
sbit K3=P1^6;
sbit K4=P1^7;
sbit M1=P1^0;
sbit M2=P1^1;
sbit M3=P1^2;
sbit M4=P1^3;
sbit D1=P2^7;
sbit D2=P2^6;
sbit KD1=P2^3;
sbit KD2=P2^4;
/////////////////
///////////////////////////// 數(shù)組命名
int SD,WD,x,xx,SDC,WDC,PWM1,PWM2;
int KK1,KK2;
int wdg=40,wdd=20,sdg=80,sdd=60;
bit SZ,JB;
bit flag1s = 0; //1s定時(shí)標(biāo)志
unsigned char T0RH = 0; //T0重載值的高字節(jié)
unsigned char T0RL = 0; //T0重載值的低字節(jié)
///////////////////////////////// 延時(shí)子程序
void delay ()
{
x=99999;
while(x--);
}
/////////////////////////////////
void main() ////////////////主程序
{
bit tmp;
unsigned char str[12];
unsigned char DHT[5];
////初始化///////////////////////
EA = 1; //開總中斷
ConfigTimer0(10); //T0定時(shí)10ms
InitLcd1602(); //初始化液晶
M1=0; M1=0;M2=0;M3=0;D1=0;D2=0;
////////////////////////////////////
DHT_Start();
delay();
delay();
delay();
delay();
while (1)
{
LcdShowStr(0, 0, "WD"); //顯示到液晶屏上
LcdShowStr(0, 1, "SD"); //顯示到液晶屏上
LcdShowStr(5, 0, "H"); //顯示到液晶屏上
LcdShowStr(5, 1, "H"); //顯示到液晶屏上
LcdShowStr(9, 0, "L"); //顯示到液晶屏上
LcdShowStr(9, 1, "L"); //顯示到液晶屏上
if (flag1s) //每秒更新一次溫度
{
str[0] = (wdg/10)%10 + '0'; //十位轉(zhuǎn)為ASCII碼
str[1] = (wdg%10) + '0'; //個(gè)位轉(zhuǎn)為ASCII
str[2] = '\0';
LcdShowStr(6, 0, str);
str[0] = (wdd/10)%10 + '0'; //十位轉(zhuǎn)為ASCII碼
str[1] = (wdd%10) + '0'; //個(gè)位轉(zhuǎn)為ASCII
str[2] = '\0';
LcdShowStr(10,0, str);
str[0] = (sdg/10)%10 + '0'; //十位轉(zhuǎn)為ASCII碼
str[1] = (sdg%10) + '0'; //個(gè)位轉(zhuǎn)為ASCII
str[2] = '\0';
LcdShowStr(6, 1, str);
str[0] = (sdd/10)%10 + '0'; //十位轉(zhuǎn)為ASCII碼
str[1] = (sdd%10) + '0'; //個(gè)位轉(zhuǎn)為ASCII
str[2] = '\0';
LcdShowStr(10, 1, str);
DHT_Start();
tmp=DHT_ByteRead(&DHT);
if(tmp==1)
{
str[0] = (DHT[0]/10)%10 + '0'; //十位轉(zhuǎn)為ASCII碼
str[1] = (DHT[0]%10) + '0'; //個(gè)位轉(zhuǎn)為ASCII
LcdShowStr(2, 1, str);
str[0] = (DHT[2]/10)%10 + '0'; //十位轉(zhuǎn)為ASCII碼
str[1] = (DHT[2]%10) + '0'; //個(gè)位轉(zhuǎn)為ASCII
str[2] = '\0';
LcdShowStr(2,0, str);
WD= DHT[2];
SD=DHT[0];
}
}
////////////////////超熱警報(bào)
if(wdg<=WD)
{
WDC=WD-wdg+2;
M1=1;
}
else M1=0;
if(wdd>=WD)
{
WDC=wdd-WD+2;
M2=1;
}
else M2=0;
if(sdg<=SD)
{
SDC=SD-sdg+2;
M3=1;
}
else M3=0;
if(sdd>=SD)
{
SDC=sdd-SD+2;
M4=1;
}
else M4=0;
if(wdg<=WD||wdd>=WD)
{
PWM1++;
if(PWM1<WDC)
D1=1;
if(PWM1>=WDC)
D1=0;
if(PWM1==10)
PWM1=0;
}
if(wdg>WD&&wdd<WD&&KK1==0)
D1=0;
if(sdg<=SD||sdd>=SD)
{
PWM2++;
if(PWM2<SDC)
D2=1;
if(PWM2>=SDC)
D2=0;
if(PWM2==10)
PWM2=0;
}
if(sdg>SD&&sdd<SD&&KK2==0)
D2=0;
/////////////////////////////按鍵設(shè)置
aj();
//////////////////////////////////////////////
}
}
void aj (void)
{
if(KD1==0)
{
delay();
KK1++;
if(KK1==1)
D1=1;
if(KK1>=2)
{
D1=0;
KK1=0;
}
}
if(KD2==0)
{
delay();
KK2++;
if(KK2==1)
D2=1;
if(KK2>=2)
{
D2=0;
KK2=0;
}
}
if(K1==0)
{
xx++;
delay();
if(xx==1)
LcdShowStr(12, 0, "WDH"); //顯示到液晶屏上
if(xx==2)
LcdShowStr(12, 0, "WDL"); //顯示到液晶屏上
if(xx==3)
LcdShowStr(12, 0, "SDH"); //顯示到液晶屏上
if(xx==4)
LcdShowStr(12, 0, "SDL"); //顯示到液晶屏上
if(xx>=5)
xx=0;
}
if(K2==0)
{
if(xx==1)
{
LcdShowStr(12, 1, "WD+"); //顯示到液晶屏上
wdg++;
}
if(xx==2)
{
LcdShowStr(12, 1, "WD+"); //顯示到液晶屏上
wdd++;
}
if(xx==3)
{
LcdShowStr(12, 1, "SD+"); //顯示到液晶屏上
sdg++;
}
if(xx==4)
{
LcdShowStr(12, 1, "SD+"); //顯示到液晶屏上
sdd++;
}
delay();
}
if(K3==0)
{
if(xx==1)
{
LcdShowStr(12, 1, "WD-"); //顯示到液晶屏上
wdg--;
}
if(xx==2)
{
LcdShowStr(12, 1, "WD-"); //顯示到液晶屏上
wdd--;
}
if(xx==3)
{
LcdShowStr(12, 1, "SD-"); //顯示到液晶屏上
sdg--;
}
if(xx==4)
{
LcdShowStr(12, 1, "SD-"); //顯示到液晶屏上
sdd--;
}
delay();
}
if(K4==0)
{
delay();
xx=0;
InitLcd1602(); //初始化液晶
}
}
/* 整型數(shù)轉(zhuǎn)換為字符串，str-字符串指針，dat-待轉(zhuǎn)換數(shù)，返回值-字符串長度 */
unsigned char IntToString(unsigned char *str, int dat)
{
signed char i = 0;
unsigned char len = 0;
unsigned char buf[6];
if (dat < 0) //如果為負(fù)數(shù)，首先取絕對值，并在指針上添加負(fù)號
{
dat = -dat;
*str++ = '-';
len++;
}
do { //先轉(zhuǎn)換為低位在前的十進(jìn)制數(shù)組
buf[i++] = dat % 10;
dat /= 10;
} while (dat > 0);
len += i; //i最后的值就是有效字符的個(gè)數(shù)
while (i-- > 0) //將數(shù)組值轉(zhuǎn)換為ASCII碼反向拷貝到接收指針上
{
*str++ = buf[i] + '0';
}
*str = '\0'; //添加字符串結(jié)束符
return len; //返回字符串長度
}
/* 配置并啟動(dòng)T0，ms-T0定時(shí)時(shí)間 */
void ConfigTimer0(unsigned int ms)
{
unsigned long tmp; //臨時(shí)變量
tmp = 11059200 / 12; //定時(shí)器計(jì)數(shù)頻率
tmp = (tmp * ms) / 1000; //計(jì)算所需的計(jì)數(shù)值
tmp = 65536 - tmp; //計(jì)算定時(shí)器重載值
tmp = tmp + 12; //補(bǔ)償中斷響應(yīng)延時(shí)造成的誤差
T0RH = (unsigned char)(tmp>>8); //定時(shí)器重載值拆分為高低字節(jié)
T0RL = (unsigned char)tmp;
TMOD &= 0xF0; //清零T0的控制位
TMOD |= 0x01; //配置T0為模式1
TH0 = T0RH; //加載T0重載值
TL0 = T0RL;
ET0 = 1; //使能T0中斷
TR0 = 1; //啟動(dòng)T0
}
/* T0中斷服務(wù)函數(shù)，完成1秒定時(shí) */
void InterruptTimer0() interrupt 1
{
static unsigned char tmr1s = 0;
TH0 = T0RH; //重新加載重載值
TL0 = T0RL;
tmr1s++;
if (tmr1s >= 100) //定時(shí)1s
{
tmr1s = 0;
flag1s = 1;
}
}
#include <reg52.h>
#include <intrins.h>
#define LCD1602_DB P0
sbit IO_18B20 = P3^2;
sbit LCD1602_RS = P2^0;
sbit LCD1602_RW = P2^1;
sbit LCD1602_E = P2^2;
/* 等待液晶準(zhǔn)備好 */
void LcdWaitReady()
{
unsigned char sta;
LCD1602_DB = 0xFF;
LCD1602_RS = 0;
LCD1602_RW = 1;
do {
LCD1602_E = 1;
sta = LCD1602_DB; //讀取狀態(tài)字
LCD1602_E = 0;
} while (sta & 0x80); //bit7等于1表示液晶正忙，重復(fù)檢測直到其等于0為止
}
/* 向LCD1602液晶寫入一字節(jié)命令，cmd-待寫入命令值 */
void LcdWriteCmd(unsigned char cmd)
{
LcdWaitReady();
LCD1602_RS = 0;
LCD1602_RW = 0;
LCD1602_DB = cmd;
LCD1602_E = 1;
LCD1602_E = 0;
}
/* 向LCD1602液晶寫入一字節(jié)數(shù)據(jù)，dat-待寫入數(shù)據(jù)值 */
void LcdWriteDat(unsigned char dat)
{
LcdWaitReady();
LCD1602_RS = 1;
LCD1602_RW = 0;
LCD1602_DB = dat;
LCD1602_E = 1;
LCD1602_E = 0;
}
/* 設(shè)置顯示RAM起始地址，亦即光標(biāo)位置，(x,y)-對應(yīng)屏幕上的字符坐標(biāo) */
void LcdSetCursor(unsigned char x, unsigned char y)
{
unsigned char addr;
if (y == 0) //由輸入的屏幕坐標(biāo)計(jì)算顯示RAM的地址
addr = 0x00 + x; //第一行字符地址從0x00起始
else
addr = 0x40 + x; //第二行字符地址從0x40起始
LcdWriteCmd(addr | 0x80); //設(shè)置RAM地址
}
/* 在液晶上顯示字符串，(x,y)-對應(yīng)屏幕上的起始坐標(biāo)，str-字符串指針 */
void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str)
{
LcdSetCursor(x, y); //設(shè)置起始地址
while (*str != '\0') //連續(xù)寫入字符串?dāng)?shù)據(jù)，直到檢測到結(jié)束符
{
LcdWriteDat(*str++);
}
}
/* 打開光標(biāo)的閃爍效果 */
void LcdOpenCursor()
{
LcdWriteCmd(0x0F);
}
/* 關(guān)閉光標(biāo)顯示 */
void LcdCloseCursor()
{
LcdWriteCmd(0x0C);
}
/* 初始化1602液晶 */
void InitLcd1602()
{
LcdWriteCmd(0x38); //16*2顯示，5*7點(diǎn)陣，8位數(shù)據(jù)接口
LcdWriteCmd(0x0C); //顯示器開，光標(biāo)關(guān)閉
LcdWriteCmd(0x06); //文字不動(dòng)，地址自動(dòng)+1
LcdWriteCmd(0x01); //清屏
}
/////////////////////////////////////////////////////////溫度傳感器18B20
#include<reg52.h>
#include<intrins.h>
sbit DHT_DATA = P3^7;
bit DHT_Start();
bit DHT_ByteRead(unsigned char *dat);
void delay_ms(unsigned char x) //誤差 -0.651041666667us
{
unsigned char a,b,c;
for(c=x;c>0;c--)
{
for(b=102;b>0;b--)
for(a=3;a>0;a--);
}
}
void delay_30us(void) //誤差 -0.703125us
{
unsigned char a;
for(a=12;a>0;a--);
}
void delay_40us(void) //誤差 -0.703125us
{
unsigned char a,b;
for(b=3;b>0;b--)
for(a=4;a>0;a--);
}
bit DHT_Start()
{ unsigned char m=0;
DHT_DATA=1;
DHT_DATA=0;
delay_ms(20);
DHT_DATA=1;
delay_40us();
if(DHT_DATA==1)
return 0;
else
while((DHT_DATA==0)&&(m<200))m++;
delay_40us();
delay_40us();
return 1;
}
bit DHT_ByteRead(unsigned char *dat)
{ unsigned char temp=0;
unsigned char x,y;
unsigned char m=0;
unsigned char n=0;
unsigned char mask=0x01;
unsigned char sum=0;
for(y=0;y<5;y++)
{
for(mask=0x80;mask!=0;mask>>=1)
{
while(DHT_DATA==0&&m<200)m++;
delay_30us();
if(DHT_DATA)
temp|=mask;
else
temp&=(~mask);
while(DHT_DATA==1&&n<200)n++;
}
*(dat+y)=temp;
temp=0;
}
for(x=0;x<4;x++)
sum+=*(dat+x);
if((sum&=0xff)==*(dat+4))
return 1;
else
return 0;
}

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