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#include <reg52.h>
#include <intrins.h>
#define u8 unsigned char
#define u16 unsigned int
#define uchar unsigned char
#define uint unsigned int
uchar wendu=0;
uchar yanwu=0;
uint shezhiwendu;
uchar shezhiyanwu;
uchar Mode=0;
sbit LedRed=P2^2;
sbit LedYellow=P2^4;
sbit Buzzer=P2^0;
sbit LCDRS=P2^7;
sbit LCDEN=P2^6;
sbit D0= P0^0;
sbit D1= P0^1;
sbit D2= P0^2;
sbit D3= P0^3;
sbit D4= P0^4;
sbit D5= P0^5;
sbit D6= P0^6;
sbit D7= P0^7;
void delay(uint z)
{
uint i,j;
for(i=0;i<z;i++)
for(j=0;j<110;j++);
}
void LCDdelay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=10;y>0;y--);
}
void LCD_WriteData(u8 dat)
{
if(dat&0x01)D0=1;else D0=0;
if(dat&0x02)D1=1;else D1=0;
if(dat&0x04)D2=1;else D2=0;
if(dat&0x08)D3=1;else D3=0;
if(dat&0x10)D4=1;else D4=0;
if(dat&0x20)D5=1;else D5=0;
if(dat&0x40)D6=1;else D6=0;
if(dat&0x80)D7=1;else D7=0;
}
void write_com(uchar com)
{
LCDRS=0;
LCD_WriteData(com);
LCDdelay(5);
LCDEN=1;
LCDdelay(5);
LCDEN=0;
}
void write_data(uchar date)
{
LCDRS=1;
LCD_WriteData(date);
LCDdelay(5);
LCDEN=1;
LCDdelay(5);
LCDEN=0;
}
void SelectPosition(unsigned char x,unsigned char y)
{
if (x==0)
{
write_com(0x80+y);
}
else
{
write_com(0xC0+y);
}
}
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s)
{
SelectPosition(x,y) ;
while (*s)
{
write_data( *s);
s ++;
}
}
void LCD_Write_Char(u8 x,u8 y,u16 s,u8 l)
{
SelectPosition(x,y) ;
if(l>=5)
write_data(0x30+s/10000%10);
if(l>=4)
write_data(0x30+s/1000%10);
if(l>=3)
write_data(0x30+s/100%10);
if(l>=2)
write_data(0x30+s/10%10);
if(l>=1)
write_data(0x30+s%10);
}
void Init1602()
{
uchar i=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
}
void Display_1602(shezhiwendu,shezhiyanwu,c,temp)
{
LCD_Write_Char(0,6,shezhiwendu,2) ;
LCD_Write_Char(0,13,shezhiyanwu,3) ;
//wendu
LCD_Write_Char(1,6,c/10,2) ;
write_data('.');
LCD_Write_Char(1,9,c%10,1) ;
//yanwu
LCD_Write_Char(1,13,temp,3) ;
}
//ad0832 函數(shù)
sbit ADCS =P1^5;
sbit ADCLK =P1^2;
sbit ADDI =P1^3;
sbit ADDO =P1^3;
unsigned int Adc0832(unsigned char channel)
{
uchar i=0;
uchar j;
uint dat=0;
uchar ndat=0;
uchar Vot=0;
if(channel==0)channel=2;
if(channel==1)channel=3;
ADDI=1;
_nop_();
_nop_();
ADCS=0;//拉低CS端
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿1
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
ADDI=channel&0x1;
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿2
_nop_();
_nop_();
ADCLK=1;//拉高CLK端
ADDI=(channel>>1)&0x1;
_nop_();
_nop_();
ADCLK=0;//拉低CLK端,形成下降沿3
ADDI=1;//控制命令結(jié)束
_nop_();
_nop_();
dat=0;
for(i=0;i<8;i++)
{
dat|=ADDO;//收數(shù)據(jù)
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次時(shí)鐘脈沖
_nop_();
_nop_();
dat<<=1;
if(i==7)dat|=ADDO;
}
for(i=0;i<8;i++)
{
j=0;
j=j|ADDO;//收數(shù)據(jù)
ADCLK=1;
_nop_();
_nop_();
ADCLK=0;//形成一次時(shí)鐘脈沖
_nop_();
_nop_();
j=j<<7;
ndat=ndat|j;
if(i<7)ndat>>=1;
}
ADCS=1;//拉低CS端
ADCLK=0;//拉低CLK端
ADDO=1;//拉高數(shù)據(jù)端,回到初始狀態(tài)
dat<<=8;
dat|=ndat;
return(dat); //return ad data
}
// 溫度傳感器模塊代碼單片機(jī)教材
sbit DQ = P1^0;
void Delay_DS18B20(int num)
{
while(num--) ;
}
void Init_DS18B20(void)
{
unsigned char x=0;
DQ = 1;
Delay_DS18B20(8);
DQ = 0;
Delay_DS18B20(80);
DQ = 1;
Delay_DS18B20(14);
x = DQ;
Delay_DS18B20(20);
}
unsigned char ReadOneChar(void)
{
unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--)
{
DQ = 0;
dat>>=1;
DQ = 1;
if(DQ)
dat|=0x80;
Delay_DS18B20(4);
}
return(dat);
}
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;
}
}
unsigned int ReadTemperature(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS18B20();
WriteOneChar(0xCC);
WriteOneChar(0x44);
Init_DS18B20();
WriteOneChar(0xCC);
WriteOneChar(0xBE);
a=ReadOneChar();
b=ReadOneChar();
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);
}
u16 check_wendu(void)
{
u16 c;
c=ReadTemperature()-5;
if(c<1) c=0;
if(c>=999) c=999;
return c;
}
//按鍵
sbit Key1=P1^6;
sbit Key2=P1^7;
sbit Key3=P3^2;
#define KEY_SET 1
#define KEY_ADD 2
#define KEY_MINUS 3
u8 Key_Scan()
{ static u8 key_up=1;
if(key_up&&(Key1==0||Key2==0||Key3==0))
{
delay(10);
key_up=0;
if(Key1==0) return 1;
else if(Key2==0)return 2;
else if(Key3==0)return 3;
}
else if(Key1==1&&Key2==1&&Key3==1)
key_up=1;
return 0;
}
void main (void)
{
u8 key;
wendu=check_wendu();
Init1602();
LCD_Write_String(0,0,"SET T:00 E:000");
LCD_Write_String(1,0,"NOW T:00.0 E:000");
delay(1000);
wendu=check_wendu();
while (1)
{
key=Key_Scan();
yanwu=Adc0832(0);
wendu=check_wendu();
if(key==KEY_SET)
{
Mode++;
}
switch(Mode)
{
case 0:
{
Display_1602(shezhiwendu,shezhiyanwu,wendu,yanwu);
if(yanwu>=shezhiyanwu) //溫度大于預(yù)設(shè)溫度
{
LedRed=0;
Buzzer=0; //報(bào)警器報(bào)警
}
else
{
LedRed=1; //關(guān)掉報(bào)警燈
}
if(wendu>=(shezhiwendu*10)) //溫度大于等于預(yù)設(shè)溫度值時(shí)
{
Buzzer=0;
LedYellow=0;
}
else
{
LedYellow=1;
}
if((yanwu<shezhiyanwu)&&(wendu<(shezhiwendu*10)))
{
Buzzer=1;
}
break;
}
case 1://預(yù)設(shè)溫度模式
{
SelectPosition(0,5) ;
write_com(0x0d);
if(key==KEY_ADD)
{
shezhiwendu++;
if(shezhiwendu>=99)
shezhiwendu=99;
……………………
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