- #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定時標志
- unsigned char T0RH = 0; //T0重載值的高字節
- unsigned char T0RL = 0; //T0重載值的低字節
- ///////////////////////////////// 延時子程序
- 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'; //十位轉為ASCII碼
- str[1] = (wdg%10) + '0'; //個位轉為ASCII
- str[2] = '\0';
- LcdShowStr(6, 0, str);
- str[0] = (wdd/10)%10 + '0'; //十位轉為ASCII碼
- str[1] = (wdd%10) + '0'; //個位轉為ASCII
- str[2] = '\0';
- LcdShowStr(10,0, str);
- str[0] = (sdg/10)%10 + '0'; //十位轉為ASCII碼
- str[1] = (sdg%10) + '0'; //個位轉為ASCII
- str[2] = '\0';
- LcdShowStr(6, 1, str);
- str[0] = (sdd/10)%10 + '0'; //十位轉為ASCII碼
- str[1] = (sdd%10) + '0'; //個位轉為ASCII
- str[2] = '\0';
- LcdShowStr(10, 1, str);
- DHT_Start();
- tmp=DHT_ByteRead(&DHT);
- if(tmp==1)
- {
- str[0] = (DHT[0]/10)%10 + '0'; //十位轉為ASCII碼
- str[1] = (DHT[0]%10) + '0'; //個位轉為ASCII
- LcdShowStr(2, 1, str);
- str[0] = (DHT[2]/10)%10 + '0'; //十位轉為ASCII碼
- str[1] = (DHT[2]%10) + '0'; //個位轉為ASCII
- str[2] = '\0';
- LcdShowStr(2,0, str);
- WD= DHT[2];
- SD=DHT[0];
- }
- }
- ////////////////////超熱警報
- 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
- }
- }
- /* 整型數轉換為字符串,str-字符串指針,dat-待轉換數,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) //如果為負數,首先取絕對值,并在指針上添加負號
- {
- dat = -dat;
- *str++ = '-';
- len++;
- }
- do { //先轉換為低位在前的十進制數組
- buf[i++] = dat % 10;
- dat /= 10;
- } while (dat > 0);
- len += i; //i最后的值就是有效字符的個數
- while (i-- > 0) //將數組值轉換為ASCII碼反向拷貝到接收指針上
- {
- *str++ = buf[i] + '0';
- }
- *str = '\0'; //添加字符串結束符
- return len; //返回字符串長度
- }
- /* 配置并啟動T0,ms-T0定時時間 */
- void ConfigTimer0(unsigned int ms)
- {
- unsigned long tmp; //臨時變量
- tmp = 11059200 / 12; //定時器計數頻率
- tmp = (tmp * ms) / 1000; //計算所需的計數值
- tmp = 65536 - tmp; //計算定時器重載值
- tmp = tmp + 12; //補償中斷響應延時造成的誤差
- T0RH = (unsigned char)(tmp>>8); //定時器重載值拆分為高低字節
- 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T0
- }
- /* T0中斷服務函數,完成1秒定時 */
- 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; //讀取狀態字
- LCD1602_E = 0;
- } while (sta & 0x80); //bit7等于1表示液晶正忙,重復檢測直到其等于0為止
- }
- /* 向LCD1602液晶寫入一字節命令,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液晶寫入一字節數據,dat-待寫入數據值 */
- void LcdWriteDat(unsigned char dat)
- {
- LcdWaitReady();
- LCD1602_RS = 1;
- LCD1602_RW = 0;
- LCD1602_DB = dat;
- LCD1602_E = 1;
- LCD1602_E = 0;
- }
- /* 設置顯示RAM起始地址,亦即光標位置,(x,y)-對應屏幕上的字符坐標 */
- void LcdSetCursor(unsigned char x, unsigned char y)
- {
- unsigned char addr;
- if (y == 0) //由輸入的屏幕坐標計算顯示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); //設置RAM地址
- }
- /* 在液晶上顯示字符串,(x,y)-對應屏幕上的起始坐標,str-字符串指針 */
- void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str)
- {
- LcdSetCursor(x, y); //設置起始地址
- while (*str != '\0') //連續寫入字符串數據,直到檢測到結束符
- {
- LcdWriteDat(*str++);
- }
- }
- /* 打開光標的閃爍效果 */
- void LcdOpenCursor()
- {
- LcdWriteCmd(0x0F);
- }
- /* 關閉光標顯示 */
- void LcdCloseCursor()
- {
- LcdWriteCmd(0x0C);
- }
- /* 初始化1602液晶 */
- void InitLcd1602()
- {
- LcdWriteCmd(0x38); //16*2顯示,5*7點陣,8位數據接口
- LcdWriteCmd(0x0C); //顯示器開,光標關閉
- LcdWriteCmd(0x06); //文字不動,地址自動+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;
- }
復制代碼 |