溫濕度傳感器與應(yīng)用代碼和仿真設(shè)計

1、 仿真圖形 運(yùn)營后成果#ifndef _TOU_H_#define _TOU_H_#include#include /#include /Keil library #define uchar unsigned charenum TEMP,HUMI;sbit DATA = P11;sbit SCK = P10;sbit RS = P20;sbit RW = P21;sbit E = P22;sfr DBPort = 0 x80; /P0=0 x80,P1=0 x90,P2=0 xA0,P3=0 xB0.數(shù)據(jù)端口/* DS1602函數(shù)聲明 */void LCD_Initial();void Got

2、oXY(unsigned char x, unsigned char y);void Print(unsigned char *str);void LCD_Write(bit style, unsigned char input);/* SHT10函數(shù)聲明 */void s_connectionreset(void);char s_measure(unsigned char *p_value, unsigned char *p_checksum, unsigned char mode);void calc_sth10(float *p_humidity ,float *p_temperatur

3、e);/float calc_dewpoint(float h,float t);#endif/*/SHT10程序（SHT10.c）：/#include#define noACK 0/繼續(xù)傳播數(shù)據(jù)，用于判斷與否結(jié)束通訊#define ACK 1 /結(jié)束數(shù)據(jù)傳播；/地址 命令 讀/寫#define STATUS_REG_W 0 x06 /000 0011 0#define STATUS_REG_R 0 x07 /000 0011 1#define MEASURE_TEMP 0 x03 /000 0001 1#define MEASURE_HUMI 0 x05 /000 0010 1#define

4、 RESET 0 x1e /000 1111 0/寫字節(jié)程序char s_write_byte(unsigned char value) unsigned char i,error=0; for (i=0 x80;i0;i=1) /高位為1，循環(huán)右移 if (i&value) DATA=1; /和要發(fā)送旳數(shù)相與，成果為發(fā)送旳位 else DATA=0; SCK=1; _nop_();_nop_();_nop_(); /延時3us SCK=0;DATA=1; /釋放數(shù)據(jù)線SCK=1; error=DATA; /檢查應(yīng)答信號，確認(rèn)通訊正常_nop_();_nop_();_nop_();SCK=0;

5、 DATA=1;return error; /error=1 通訊錯誤/讀字節(jié)程序char s_read_byte(unsigned char ack)/- unsigned char i,val=0;DATA=1; /釋放數(shù)據(jù)線for(i=0 x80;i0;i=1) /高位為1，循環(huán)右移 SCK=1; if(DATA) val=(val|i); /讀一位數(shù)據(jù)線旳值 SCK=0; DATA=!ack; /如果是校驗(yàn)，讀取完后結(jié)束通訊；SCK=1; _nop_();_nop_();_nop_(); /延時3us SCK=0; _nop_();_nop_();_nop_(); DATA=1; /釋

6、放數(shù)據(jù)線return val;/啟動傳播void s_transstart(void)/ generates a transmission start / _ _/ DATA: |_|/ _ _/ SCK : _| |_| |_ DATA=1; SCK=0; /準(zhǔn)備 _nop_(); SCK=1; _nop_(); DATA=0; _nop_(); SCK=0; _nop_();_nop_();_nop_(); SCK=1; _nop_(); DATA=1; _nop_(); SCK=0; /連接復(fù)位void s_connectionreset(void)/ communication res

7、et: DATA-line=1 and at least 9 SCK cycles followed by transstart/ _ _/ DATA: |_|/ _ _ _ _ _ _ _ _ _ _ _/ SCK : _| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_ unsigned char i; DATA=1; SCK=0; /準(zhǔn)備for(i=0;i=1 in case of no response form the sensor */ /溫濕度測量char s_measure(unsigned char *p_value, unsigned

8、char *p_checksum, unsigned char mode)/ 進(jìn)行溫度或者濕度轉(zhuǎn)換，由參數(shù)mode決定轉(zhuǎn)換內(nèi)容； /enum TEMP,HUMI; /已經(jīng)在頭文獻(xiàn)中定義unsigned error=0;unsigned int i;s_transstart(); /啟動傳播switch(mode) /選擇發(fā)送命令 case TEMP : error+=s_write_byte(MEASURE_TEMP); break; /測量溫度 case HUMI : error+=s_write_byte(MEASURE_HUMI); break; /測量濕度 default : brea

9、k; for (i=0;i100)rh_true=100; /濕度最大修正if(rh_true0.1)rh_true=0.1; /濕度最小修正*p_temperature=t_C; /返回溫度成果*p_humidity=rh_true; /返回濕度成果/從相對溫度和濕度計算露點(diǎn)/*float calc_dewpoint(float h,float t)float logEx,dew_point;logEx=0.66077+7.5*t/(237.3+t)+(log10(h)-2);dew_point = (logEx - 0.66077)*237.3/(0.66077+7.5-logEx);re

10、turn dew_point; */*/DS1602程序（1602.c）：/#include/內(nèi)部等待函數(shù)*unsigned char LCD_Wait(void) RS=0; RW=1; _nop_(); E=1; _nop_(); E=0; return DBPort; /向LCD寫入命令或數(shù)據(jù)*#define LCD_COMMAND 0 / Command#define LCD_DATA 1 / Data#define LCD_CLEAR_SCREEN 0 x01 / 清屏#define LCD_HOMING 0 x02 / 光標(biāo)返回原點(diǎn)void LCD_Write(bit style,

11、 unsigned char input) E=0; RS=style; RW=0; _nop_(); DBPort=input; _nop_();/注意順序 E=1; _nop_();/注意順序 E=0; _nop_(); LCD_Wait(); /設(shè)立顯示模式*#define LCD_SHOW 0 x04 /顯示開#define LCD_HIDE 0 x00 /顯示關(guān) #define LCD_CURSOR 0 x02 /顯示光標(biāo)#define LCD_NO_CURSOR 0 x00 /無光標(biāo) #define LCD_FLASH 0 x01 /光標(biāo)閃動#define LCD_NO_FLASH

12、 0 x00 /光標(biāo)不閃動void LCD_SetDisplay(unsigned char DisplayMode) LCD_Write(LCD_COMMAND, 0 x08|DisplayMode); /設(shè)立輸入模式*#define LCD_AC_UP 0 x02#define LCD_AC_DOWN 0 x00 / default#define LCD_MOVE 0 x01 / 畫面可平移#define LCD_NO_MOVE 0 x00 /defaultvoid LCD_SetInput(unsigned char InputMode) LCD_Write(LCD_COMMAND, 0

13、 x04|InputMode);/初始化LCD*void LCD_Initial() E=0; LCD_Write(LCD_COMMAND,0 x38); /8位數(shù)據(jù)端口,2行顯示,5*7點(diǎn)陣 LCD_Write(LCD_COMMAND,0 x38); LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); /啟動顯示, 無光標(biāo) LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); /清屏 LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); /AC遞增, 畫面不動/液晶字符輸入旳位置*void GotoXY(unsign

14、ed char x, unsigned char y) if(y=0) LCD_Write(LCD_COMMAND,0 x80|x); if(y=1) LCD_Write(LCD_COMMAND,0 x80|(x-0 x40);/將字符輸出到液晶顯示void Print(unsigned char *str) while(*str!=0) LCD_Write(LCD_DATA,*str); str+; /*/主函數(shù)（main.c）：/#includetypedef union /定義共用同類型 unsigned int i;float f; value;/延時函數(shù)void delay(int

15、z)/z為毫秒數(shù)int x,y;for(x=z;x0;x-)for(y=125;y0;y-);void main() unsigned int temp,humi;value humi_val,temp_val;/定義兩個共同體，一種用于濕度，一種用于溫度/float dew_point; /用于記錄露點(diǎn)值unsigned char error; /用于檢查與否浮現(xiàn)錯誤unsigned char checksum;/CRC uchar wendu6; /用于記錄溫度uchar shidu6; /用于記錄濕度 LCD_Initial(); /初始化液晶 GotoXY(0,0); /選擇溫度顯示位

16、置 Print(TEMP: %C); /5格空格 GotoXY(0,1); /選擇濕度顯示位置 Print(HUMI: %RH); /5格空格s_connectionreset(); /啟動連接復(fù)位while(1)error=0; /初始化error=0，即沒有錯誤error+=s_measure(unsigned char*)&temp_val.i,&checksum,TEMP); /溫度測量error+=s_measure(unsigned char*)&humi_val.i,&checksum,HUMI); /濕度測量 if(error!=0) s_connectionreset();

17、/如果發(fā)生錯誤，系統(tǒng)復(fù)位 else humi_val.f=(float)humi_val.i; /轉(zhuǎn)換為浮點(diǎn)數(shù) temp_val.f=(float)temp_val.i; /轉(zhuǎn)換為浮點(diǎn)數(shù) calc_sth10(&humi_val.f,&temp_val.f); /修正相對濕度及溫度/ dew_point=calc_dewpoint(humi_val.f,temp_val.f); /計算e dew_point temp=temp_val.f*10; humi=humi_val.f*10; GotoXY(5,0);/設(shè)立溫度顯示位置 wendu0=temp/1000+0; /溫度百位 wendu1=temp%1000/100+0; /溫度十位 wendu2=temp%100/10+0