温湿度控制系统源代码
单片机源程序如下:
- //****************************************************************//
- //单片机 : STC89C52RC
- //硬件连接: P1.7口为通讯口连接DHT11,DHT11的电源和地连接单片机的电源和地。
- //****************************************************************//
- #include <reg52.h>
- #include "1602.h"
- #include "dht.h"
- #include "2402.h"
- //定义两个个LED灯
- sbit Led_jiangwen=P1^5; //加热灯
- sbit Led_shengwen=P1^4; //加湿灯
- sbit fmq=P1^3; //蜂鸣器
- 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
- volatile bit fmqt = 0;
- volatile bit fmqh = 0;
- //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; //温度下限和湿度下限
- 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); //存温度下限值TH高8位
- DELAY(500);
- pSave ++;
- wrteeprom(3, *pSave); //存湿度下限值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<1000;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:");
-
- //载入温度下限和湿度下限设定值
- 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;
- fmqt=1;
- }
- else
- {
- Led_jiangwen= 1;
- fmqt=0;
- } //加热
- if(humidity > HH)
- {
- Led_qushi= 0;
- fmqh=1;
- }
- else
- {
- Led_qushi= 1;
- fmqh=0;
- } //加湿
- if((fmqt==1)||(fmqh==1))
- fmq=0;
- else
- fmq=1;
-
- //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;
- elsekeyTH1 = 1;
- if (!Key_TH2) keyTH2 = 0;
- elsekeyTH2 = 1;
- if (!Key_HH1) keyHH1 = 0;
- elsekeyHH1 = 1;
- if (!Key_HH2) keyHH2 = 0;
- elsekeyHH2 = 1;
-
- }
- }
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