附代码
#include <reg52.h>
#include <intrins.h>
#include <absacc.h>
#include <math.h>
#define uchar unsigned char
#define uint unsigned int
//定义四个输出端口
sbit Led_jiashi=P3^0; //加湿
sbit Led_qushi=P3^1; //去湿
sbit Led_jiangwen=P3^2; //降温
sbit Led_shengwen=P3^3; //升温
//定义三个设置按键
sbit Key_SET = P1^2;
sbit Key_ADD = P1^3;
sbit Key_SUB = P1^4;
sbit Key_OK = P1^5;
//定义24C02数据口
sbit SCL = P1^0;
sbit SDA = P1^1;
//定义DHT11数据口
sbit DATA = P1^6;
sbit buzz=P3^5;
//定义LCD1602端口
sbit E=P0^5; //1602使能引脚
sbit RW=P0^6; //1602读写引脚
sbit RS=P0^7; //1602数据/命令选择引脚
//定义全局变量
uchar U8FLAG,U8temp,U8comdata,U8RH_data_H_temp,U8RH_data_L_temp,U8T_data_H_temp,U8T_data_L_temp,U8checkdata_temp;
uchar U8RH_data_H,U8RH_data_L,U8T_data_H,U8T_data_L,U8checkdata;
//----温度高8位== U8T_data_H------
//----温度低8位== U8T_data_L------
//----湿度高8位== U8RH_data_H-----
//----湿度低8位== U8RH_data_L-----
//----校验 8位 == U8checkdata-----
uchar Mode,humidity,temperature;
char TH,TL,HH,HL;
bit bdata FlagStartRH,hot,cold,humid,dry,BJ;
//定时器0初始化
void Timer0_Init()
{
ET0 = 1; //允许定时器0中断
TMOD = 0x11; //定时器工作方式选择
TL0 = 0xb0;
TH0 = 0x3c; //定时器赋予初值
TR0 = 1; //启动定时器
}
//定时器0中断
void Timer0_ISR (void) interrupt 1 using 0
{
uchar RHCounter;
TL0 = 0xb0;
TH0 = 0x3c; //定时器赋予初值
RHCounter++;
if(RHCounter%10==0&&BJ==1)
buzz=!buzz;
else if(BJ==0)
buzz=1;
//每2秒钟启动一次温湿度转换
if (RHCounter >= 40)
{
FlagStartRH = 1;
RHCounter = 0;
}
}
/*********************************
BASE DRIVE
**********************************/
void DELAY(unsigned int t)
{
while(t!=0)
t--;
}
/******************************
IIC DRIVE
******************************/
void IICStart(void)
{
SCL=0;
DELAY(1);
SDA=1; SCL=1; DELAY(1);
SDA=0; DELAY(1);
SCL=0;
}
void IICStop(void)
{
SDA=0;SCL=1; DELAY(1);
SDA=1; DELAY(1);
SCL=0;
}
void SEND0(void)
{
SDA=0;
SCL=1;
DELAY(1);
SCL=0;
}
void SEND1(void)
{
SDA=1;
DELAY(1);
SCL=1;
DELAY(1);
SCL=0;
}
bit Check_Ack(void)
{
unsigned char errtime=250;
DELAY(1);
SCL=1;
DELAY(1);
CY=SDA;
while(CY)
{
errtime--;
CY=SDA;
if (!errtime)
{
IICStop();
return 1;
}
}
DELAY(1);
SCL=0;
return 0;
}
void Write_byte(unsigned char dat)
{
unsigned char i;
for(i=0;i<8;i++)
{
if((dat<<i)&0x80)
SEND1();
else
SEND0();
}
}
unsigned char Read_byte(void)
{
unsigned char i,temp=0;
for(i=0;i<8;i++)
{
SDA=1;
SCL=1;
DELAY(1);
if(SDA==1)
{
temp=temp<<1;
temp=temp|0x01;
}
else
temp=temp<<1;
SCL=0;
}
return temp;
}
/************************************
EEPROM DRIVE
Addr:from 0x00-->
*************************************/
unsigned char rdeeprom(unsigned char addr)
{
unsigned char temp=0;
bit flag=0;
IICStart();
Write_byte(0xa0);
Check_Ack();
Write_byte(addr);
Check_Ack();
IICStart();
Write_byte(0xa1);
Check_Ack();
temp=Read_byte();
SEND1();
IICStop();
return temp;
}
void wrteeprom(unsigned char addr,unsigned char dat)
{
IICStart();
Write_byte(0xa0);
Check_Ack();
Write_byte(addr);
Check_Ack();
Write_byte(dat);
Check_Ack();
IICStop();
}
void Delay1(uint j)
{
unsigned char i;
i = 47;
while(j--)
{
_nop_();
while (--i);
}
}
void Delay_10us(void)
{
unsigned char i;
_nop_();
i = 2;
while (--i);
}
void COM(void)
{
uchar i;
for(i=0;i<8;i++)
{
U8FLAG=2;
while((!DATA)&&U8FLAG++);
Delay_10us();
Delay_10us();
Delay_10us();
U8temp=0;
if(DATA)U8temp=1;
U8FLAG=2;
while((DATA)&&U8FLAG++);
//超时则跳出for循环
if(U8FLAG==1)break;
//判断数据位是0还是1
// 如果高电平高过预定0高电平值则数据位为 1
U8comdata<<=1;
U8comdata|=U8temp; //0
}//rof
}
//--------------------------------
//-----温湿度读取子程序 ------------
//--------------------------------
//----以下变量均为全局变量--------
//----温度高8位== U8T_data_H------
//----温度低8位== U8T_data_L------
//----湿度高8位== U8RH_data_H-----
//----湿度低8位== U8RH_data_L-----
//----校验 8位 == U8checkdata-----
//----调用相关子程序如下----------
//---- Delay();, Delay_10us();,COM();
//--------------------------------
uchar RH(void)
{
//主机拉低20ms
DATA=0;
Delay1(20); //2000us
DATA=1;
//总线由上拉电阻拉高 主机延时20us
Delay_10us();
Delay_10us();
Delay_10us();
Delay_10us();
//主机设为输入 判断从机响应信号
DATA=1;
//判断从机是否有低电平响应信号 如不响应则跳出，响应则向下运行
if(!DATA) //T !
{
U8FLAG=2;
//判断从机是否发出 80us 的低电平响应信号是否结束
while((!DATA)&&U8FLAG++);
U8FLAG=2;
//判断从机是否发出 80us 的高电平，如发出则进入数据接收状态
while((DATA)&&U8FLAG++);
//数据接收状态
COM();
U8RH_data_H_temp=U8comdata;
COM();
U8RH_data_L_temp=U8comdata;
COM();
U8T_data_H_temp=U8comdata;
COM();
U8T_data_L_temp=U8comdata;
COM();
U8checkdata_temp=U8comdata;
DATA=1;
//数据校验
U8temp=(U8T_data_H_temp+U8T_data_L_temp+U8RH_data_H_temp+U8RH_data_L_temp);
if(U8temp==U8checkdata_temp)
{
U8RH_data_H=U8RH_data_H_temp;
U8RH_data_L=U8RH_data_L_temp;
U8T_data_H=U8T_data_H_temp;
U8T_data_L=U8T_data_L_temp;
U8checkdata=U8checkdata_temp;
}
return 1;
}
else //传感器不响应
{
return 0;
}
}
/********************************************************************
* 文件名 ： 液晶1602显示.c
* 描述 : 该程序实现了对液晶1602的控制。
***********************************************************************/
/********************************************************************
* 名称 : delay()
* 功能 : 延时,延时时间大概为140US
***********************************************************************/
void delay()
{
int i,j;
for(i=0; i<=10; i++)
for(j=0; j<=2; j++);
}
/********************************************************************
* 名称 : enable(uchar del)
* 功能 : 1602命令函数
* 输入 : 输入的命令值
* 输出 : 无
***********************************************************************/
void enable(uchar del)
{
delay();
RS = 0;
RW = 0;
E = 1;
P2 = del;
delay();
E = 0;
delay();
}
/********************************************************************
* 名称 : write(uchar del)
* 功能 : 1602写数据函数
* 输入 : 需要写入1602的数据
* 输出 : 无
***********************************************************************/
void write(uchar del)
{
delay();
RS = 1;
RW = 0;
E = 1;
P2 = del;
delay();
E = 0;
delay();
}
/********************************************************************
* 名称 : L1602_init()
* 功能 : 1602初始化
* 输入 : 无
* 输出 : 无
***********************************************************************/
void L1602_init(void)
{
enable(0x38);
delay();
enable(0x38);
delay();
enable(0x38);
delay();
enable(0x38);
enable(0x08);
enable(0x01); //清屏要放在最后
enable(0x06);
delay();
enable(0x0C);
enable(0x01);
delay();
}
/********************************************************************
* 名称 : L1602_char(uchar hang,uchar lie,char sign)
* 功能 : 改变液晶中某位的值，如果要让第一行，第五个字符显示"b" ，调用该函数如下
L1602_char(1,5,'b')
* 输入 : 行，列，需要输入1602的数据
* 输出 : 无
***********************************************************************/
void L1602_char(uchar hang,uchar lie,char sign)
{
uchar a;
if(hang == 1) a = 0x80;
if(hang == 2) a = 0xc0;
a = a + lie - 1;
enable(a);
write(sign);
}
/********************************************************************
* 名称 : L1602_string(uchar hang,uchar lie,uchar *p)
* 功能 : 改变液晶中某位的值，如果要让第一行，第五个字符开始显示"ab cd ef" ，调用该函数如下
L1602_string(1,5,"ab cd ef;")
* 输入 : 行，列，需要输入1602的数据
* 输出 : 无
***********************************************************************/
void L1602_string(uchar hang,uchar lie,uchar *p)
{
uchar a;
if(hang == 1) a = 0x80;
if(hang == 2) a = 0xc0;
a = a + lie - 1;
enable(a);
while(1)
{
if(*p == '\0') break;
write(*p);
p++;
}
}
//显示整型的温湿度数据用，共占用4位，其中一位符号位
void L1602_int(uchar hang, uchar lie, int num)
{
uint temp;
uint gewei,shiwei,baiwei,sign;
if (num >= 0)
sign = 0;
else
sign = 1;
temp = abs(num);
baiwei = temp / 100;
temp = temp - baiwei*100;
shiwei = temp / 10;
gewei = temp - shiwei*10;
num = abs(num);
if (num>=100)
{
// L1602_char(hang, lie+1, baiwei+48);
L1602_char(hang, lie+2, shiwei+48);
L1602_char(hang, lie+3, gewei+48);
}
else if (num>=10)
{
if (sign == 1)
L1602_char(hang, lie+1, '-');
L1602_char(hang, lie+2, shiwei+48);
L1602_char(hang, lie+3, gewei+48);
}
else
{
if (sign == 1)
L1602_char(hang, lie+2, '-');
else
L1602_char(hang, lie+2, ' ');
L1602_char(hang, lie+3, gewei+48);
}
}
void display()
{
if(Mode==0)
{
L1602_int(1,3,temperature);
L1602_char(1,7,0xdf);
L1602_int(1,12,humidity);
if(hot==1&&cold==0&&humid==0&&dry==0)
{L1602_string(2,1," It's very hot! ");BJ=1;}
else if(hot==1&&cold==0&&humid==1&&dry==0)
{L1602_string(2,1," Hot and humid! ");BJ=1;}
else if(hot==1&&cold==0&&humid==0&&dry==1)
{L1602_string(2,1," Hot and dry! ");BJ=1;}
else if(hot==0&&cold==1&&humid==0&&dry==0)
{L1602_string(2,1," It's very cold!");BJ=1;}
else if(hot==0&&cold==1&&humid==1&&dry==0)
{L1602_string(2,1," Cold and humid!");BJ=1;}
else if(hot==0&&cold==1&&humid==0&&dry==1)
{L1602_string(2,1," Cold and dry! ");BJ=1;}
else if(hot==0&&cold==0&&humid==1&&dry==0)
{L1602_string(2,1,"It's very humid!");BJ=1;}
else if(hot==0&&cold==0&&humid==0&&dry==1)
{L1602_string(2,1," It's very dry! ");BJ=1;}
else if(hot==0&&cold==0&&humid==0&&dry==0)
{L1602_string(2,1,"Good environment");BJ=0;}
}
}
/***按键函数***/
void KEY()
{
if(Key_SET==0)
{
Delay1(200);
if(Key_SET==0)
{
Mode++;
TR0=0;
Led_shengwen=1;
Led_jiangwen=1;
Led_jiashi=1;
Led_qushi=1;
hot=0;
cold=0;
humid=0;
dry=0;
if(Mode==1)
{
L1602_string(1,1," TH: C HH: %");
L1602_char(1,8,0xdf);
L1602_string(2,1," TL: C HL: %");
L1602_char(2,8,0xdf);
L1602_int(1,4,TH);
L1602_int(1,12,HH);
L1602_int(2,4,TL);
L1602_int(2,12,HL);
enable(0x80+6);
enable(0x0f);
}
else if(Mode==2)
{
enable(0x80+0x40+6);
enable(0x0f);
}
else if(Mode==3)
{
enable(0x80+14);
enable(0x0f);
}
else if(Mode==4)
{
enable(0x80+0x40+14);
enable(0x0f);
}
else if(Mode>=5)
{
Mode=1;
enable(0x80+6);
enable(0x0f);
}
while(!Key_SET);
}
}
else if(Key_ADD==0)
{
Delay1(200);
if(Key_ADD==0)
{
if(Mode==1)
{
TH++;
if(TH>=100)
TH=99;
L1602_int(1,4,TH);
enable(0x80+6);
wrteeprom(0,TH);
}
else if(Mode==2)
{
TL++;
if(TL>=TH)
TL=TH-1;
L1602_int(2,4,TL);
enable(0x80+0x40+6);
wrteeprom(1,TL);
}
else if(Mode==3)
{
HH++;
if(HH>=100)
HH=99;
L1602_int(1,12,HH);
enable(0x80+14);
wrteeprom(2,HH);
}
else if(Mode==4)
{
HL++;
if(HL>=HH)
HL=HH-1;
L1602_int(2,12,HL);
enable(0x80+0x40+14);
wrteeprom(3,HL);
}
while(!Key_ADD);
}
}
else if(Key_SUB==0)
{
Delay1(200);
if(Key_SUB==0)
{
if(Mode==1)
{
TH--;
if(TH<=TL)
TH=TL+1;
L1602_int(1,4,TH);
enable(0x80+6);
wrteeprom(0,TH);
}
else if(Mode==2)
{
TL--;
if(TL<=0)
TL=0;
L1602_int(2,4,TL);
enable(0x80+0x40+6);
wrteeprom(1,TL);
}
else if(Mode==3)
{
HH--;
if(HH<=HL)
HH=HL+1;
L1602_int(1,12,HH);
enable(0x80+14);
wrteeprom(2,HH);
}
else if(Mode==4)
{
HL--;
if(HL<=0)
HL=0;
L1602_int(2,12,HL);
enable(0x80+0x40+14);
wrteeprom(3,HL);
}
while(!Key_SUB);
}
}
if(Key_OK==0&&Mode!=0)
{
Delay1(200);
if(Key_OK==0)
{
L1602_string(1,1,"Tem: C Hum: %");
L1602_string(2,1,"Good environment");
Mode=0;
TR0=1;
enable(0x0c);
while(Key_OK==0);
}
}
}
//数据初始化
void Data_Init()
{
Led_qushi = 1;
Led_jiashi=1;
Led_jiangwen = 1;
Led_shengwen = 1;
}
void main()
{
uint i, j, testnum;
EA = 0;
Timer0_Init(); //定时器0初始化
Data_Init();
EA = 1;
L1602_init();
L1602_string(1,1," Welcome to T&H ");
L1602_string(2,1," Control System!");
//延时
for (i=0;i<1000;i++)
for (j=0;j<100;j++)
{;}
/***载入温度上限和湿度上限设定值***/
TH=rdeeprom(0);
Delay1(20); //加延时可以存取稳定
TL=rdeeprom(1);
Delay1(20);
HH=rdeeprom(2);
Delay1(20);
HL=rdeeprom(3);
Delay1(20);
if(TH<=0&&TL<=0&&HH<=0&&HL<=0)
{
wrteeprom(0,30);
Delay1(20); //加延时可以存取稳定
TH=rdeeprom(0);
Delay1(20); //加延时可以存取稳定
wrteeprom(1,20);
Delay1(20); //加延时可以存取稳定
TL=rdeeprom(1);
Delay1(20); //加延时可以存取稳定
wrteeprom(2,60);
Delay1(20); //加延时可以存取稳定
HH=rdeeprom(2);
Delay1(20); //加延时可以存取稳定
wrteeprom(3,50);
Delay1(20); //加延时可以存取稳定
HL=rdeeprom(3);
}
//清屏
L1602_string(1,1," ");
L1602_string(2,1," ");
L1602_string(1,1,"Tem: C Hum: %");
L1602_string(2,1,"Good environment");
while(1)
{
if (FlagStartRH == 1) //温湿度转换标志检查
{
TR0 = 0;
testnum = RH();
FlagStartRH = 0;
TR0 = 1;
humidity = U8RH_data_H; //读出温湿度，只取整数部分
temperature = U8T_data_H;
if(Mode==0) //温湿度控制
{
if (temperature > TH)
{
Led_jiangwen = 0;
hot=1;
Led_shengwen = 1;
cold=0;
// BJ=1;
}
else if(temperature<TL)
{
Led_shengwen = 0;
cold=1;
Led_jiangwen = 1;
hot=0;
buzz=0;
// BJ=1;
}
else
{
Led_jiangwen=1;
Led_shengwen=1;
hot=0;
cold=0;
buzz=1;
}
if (humidity > HH)
{
Led_qushi = 0;
humid=1;
Led_jiashi = 1;
dry=0;
// BJ=1;
}
else if(humidity<HL)
{
Led_jiashi = 0;
dry=1;
Led_qushi = 1;
humid=0;
// BJ=1;
}
else
{
Led_qushi=1;
Led_jiashi=1;
humid=0;
dry=0;
}
}
else
{
Led_shengwen=1;
Led_jiangwen=1;
Led_jiashi=1;
Led_qushi=1;
hot=0;
cold=0;
humid=0;
dry=0;
BJ=0;
}
}
display();
KEY();
}
}
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