基于单片机的温湿度监测系统设计（程序）

原创

电子开发圈 2022-11-01 15:04:51 博主文章分类：MCU51系统设计 ©著作权

©著作权归作者所有：来自51CTO博客作者电子开发圈的原创作品，请联系作者获取转载授权，否则将追究法律责任

博主福利：100G+电子设计学习资源包！

http://mp.weixin.qq.com/mp/homepage?__biz=MzU3OTczMzk5Mg==&hid=7&sn=ad5d5d0f15df84f4a92ebf72f88d4ee8&scene=18#wechat_redirect --------------------------------------------------------------------------------------------------------------------------

#include <reg52.h>
#include "1602.h"
#include "dht.h"
#include "2402.h"

//定义三个LED灯
sbit Led_qushi=P1^6;        //去湿灯
sbit Led_jiangwen=P1^5;        //降温灯
sbit Led_shengwen=P1^4;        //升温灯
sbit Key_TH1 = P3^2;
sbit Key_TH2 = P3^3;
sbit Key_HH1 = P3^4;
sbit Key_HH2 = P3^5;

//定义标识
volatile bit FlagStartRH = 0;  //开始温湿度转换标志
volatile bit FlagKeyPress = 0; //有键按下


//定义温湿度传感器用外部变量
extern U8  U8FLAG,k;
extern U8  U8count,U8temp;
extern U8  U8T_data_H,U8T_data_L,U8RH_data_H,U8RH_data_L,U8checkdata;
extern U8  U8T_data_H_temp,U8T_data_L_temp,U8RH_data_H_temp,U8RH_data_L_temp,U8checkdata_temp;
extern U8  U8comdata;
extern U8  count, count_r;

U16 temp;
S16 temperature, humidity;
S16 idata TH, HH;  //温度上限和湿度上限
char * pSave;
U8 keyvalue, keyTH1, keyTH2, keyHH1, keyHH2;

//定义变量
U16 RHCounter;


//数据初始化
void Data_Init()
{
   RHCounter = 0;
   Led_qushi = 1;
   Led_jiangwen = 1;
   Led_shengwen = 1;
   TH = 40;
   HH = 85;
   keyvalue = 0;
   keyTH1 = 1;
   keyTH2 = 1;
   keyHH1 = 1;
   keyHH2 = 1;

}

//定时器0初始化
void Timer0_Init()
{
    ET0 = 1;        //允许定时器0中断
    TMOD = 1;       //定时器工作方式选择
    TL0 = 0x06;     
    TH0 = 0xf8;     //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
{
    TL0 = 0x06;
    TH0 = 0xf8;     //定时器赋予初值

    //每2秒钟启动一次温湿度转换
    RHCounter ++;
    if (RHCounter >= 1000)
    {
       FlagStartRH = 1;
       RHCounter = 0;
    }
}

//存入设定值、
void Save_Setting()
{
   pSave =  (char *)&TH;      //地址低位对应低8位，高位对应高8位
   wrteeprom(0, *pSave);      //存温度上限值TH低8位
   DELAY(500);
   pSave ++;
   wrteeprom(1, *pSave);      //存温度上限值TH高8位
   DELAY(500);
   pSave =  (char *)&HH;
   wrteeprom(2, *pSave);      //存湿度上限值RH低8位
   DELAY(500);
   pSave ++;
   wrteeprom(3, *pSave);      //存湿度上限值RH高8位
   DELAY(500);
}

//载入设定值、
void Load_Setting()
{
   pSave =  (char *)&TH;
   *pSave++ = rdeeprom(0);
   *pSave = rdeeprom(1);
   pSave = (char *)&HH;
   *pSave++ = rdeeprom(2);
   *pSave = rdeeprom(3);
   if ((TH>99)||(TH<0)) TH = 40;
   if ((HH>99)||(HH<0)) HH = 85;
}

void KeyProcess(uint num)
{
   switch (num)
   {
      case 1:
         if (TH<99) TH++;
         L1602_char(1, 15, TH/10+48);
         L1602_char(1, 16, TH%10+48);
         break;
      case 2:
         if (TH>1) TH--;
         L1602_char(1, 15, TH/10+48);
         L1602_char(1, 16, TH%10+48);
         break;
      case 3:
         if (HH<99) HH++;
         L1602_char(2, 15, HH/10+48);
         L1602_char(2, 16, HH%10+48);
         break;
      case 4:
         if (HH>1) HH--;
         L1602_char(2, 15, HH/10+48);
         L1602_char(2, 16, HH%10+48);
         break;
      default:
         break;
   }
   Save_Setting();
}

/********************************************************************
* 名称 : Main()
* 功能 : 主函数
***********************************************************************/
void main()
{
    U16 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<500;i++)
       for (j=0;j<1000;j++)
       {;}
    //清屏
    L1602_string(1,1,"                ");
    L1602_string(2,1,"                ");
    L1602_string(1,1,"Tem:    C  TH:");
    L1602_string(2,1,"Hum:    %  HH:");
    
    //载入温度上限和湿度上限设定值
    Load_Setting();
    L1602_char(1, 15, TH/10+48);
    L1602_char(1, 16, TH%10+48);
    L1602_char(2, 15, HH/10+48);
    L1602_char(2, 16, HH%10+48);


    while(1)
    {
       //温湿度转换标志检查
         if (FlagStartRH == 1)
         {
             TR0 = 0;
             testnum = RH();
              FlagStartRH = 0;
             TR0 = 1;
             //读出温湿度，只取整数部分
             humidity = U8RH_data_H;
             temperature = U8T_data_H;
              //显示温湿度
             L1602_int(1,5,temperature);
             L1602_int(2,5,humidity);    
        }
        //温湿度控制
        if (temperature > TH) Led_jiangwen = 0;
        else Led_jiangwen = 1;                    //降温
        if (humidity > HH) Led_qushi = 0;
        else Led_qushi = 1;                        //去湿
         
        //键盘查询，在弹起时响应
        if ((Key_TH1)&&(keyTH1==0)) {FlagKeyPress = 1; keyvalue = 1;}
        else if ((Key_TH2)&&(keyTH2==0)) {FlagKeyPress = 1; keyvalue = 2;}
        else if ((Key_HH1)&&(keyHH1==0)) {FlagKeyPress = 1; keyvalue = 3;}
        else if ((Key_HH2)&&(keyHH2==0)) {FlagKeyPress = 1; keyvalue = 4;}
        if (FlagKeyPress == 1)
        {
           KeyProcess(keyvalue);
           FlagKeyPress = 0;           
        }
        if (!Key_TH1) keyTH1 = 0;
        else keyTH1 = 1;
        if (!Key_TH2) keyTH2 = 0;
        else keyTH2 = 1;
        if (!Key_HH1) keyHH1 = 0;
        else keyHH1 = 1;
        if (!Key_HH2) keyHH2 = 0;
        else keyHH2 = 1;
    }    
}