sht11溫濕度傳感器及1602應(yīng)用代碼和仿真設(shè)計(jì)

1、-. z. 仿真圖形 運(yùn)行后結(jié)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*80; /P0=0*80,P1=0*90,P2=0*A0,P3=0*B0.數(shù)據(jù)端口/* DS1602函數(shù)聲明 */void LCD_Initial();void Got

2、o*Y(unsigned char *, 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)傳輸數(shù)據(jù)，用于判斷是否完畢通訊#define ACK 1 /完畢數(shù)據(jù)傳輸；/地址 命令 讀/寫#define STATUS_REG_W 0*06 /000 0011 0#define STATUS_REG_R 0*07 /000 0011 1#define MEASURE_TEMP 0*03 /000 0001 1#define MEASURE_HUMI 0*05 /000 0010 1#define RESET

4、 0*1e /000 1111 0/寫字節(jié)程序char s_write_byte(unsigned char value) unsigned char i,error=0; for (i=0*80;i0;i=1) /高位為1，循環(huán)右移 if (i&value) DATA=1; /和要發(fā)送的數(shù)相與，結(jié)果為發(fā)送的位 else DATA=0; SCK=1; _nop_();_nop_();_nop_(); /延時(shí)3us SCK=0;DATA=1; /釋放數(shù)據(jù)線SCK=1; error=DATA; /檢查應(yīng)答信號(hào)，確認(rèn)通訊正常_nop_();_nop_();_nop_();SCK=0; DATA=1;

5、return error; /error=1 通訊錯(cuò)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*80;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)線的值 SCK=0; DATA=!ack; /如果是校驗(yàn)，讀取完后完畢通訊；SCK=1; _nop_();_nop_();_nop_(); /延時(shí)3us SCK=0; _nop_();_nop_();_nop_(); DATA=1; /釋放數(shù)據(jù)線retur

6、n val;/啟動(dòng)傳輸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)/ munication reset: DATA-lin

7、e=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 char *p_checks

8、um, unsigned char mode)/ 進(jìn)展溫度或者濕度轉(zhuǎn)換，由參數(shù)mode決定轉(zhuǎn)換內(nèi)容； /enum TEMP,HUMI; /已經(jīng)在頭文件中定義unsigned error=0;unsigned int i;s_transstart(); /啟動(dòng)傳輸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 : break; for (i=0;i1

9、00)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; /返回溫度結(jié)果*p_humidity=rh_true; /返回濕度結(jié)果/從相對溫度和濕度計(jì)算露點(diǎn)/*float calc_dewpoint(float h,float t)float logE*,dew_point;logE*=0.66077+7.5*t/(237.3+t)+(log10(h)-2);dew_point = (logE* - 0.66077)*237.3/(0.66077+7.5-logE*);return dew_point

10、; */*/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_MAND 0 / mand#define LCD_DATA 1 / Data#define LCD_CLEAR_SCREEN 0*01 / 清屏#define LCD_HOMING 0*02 / 光標(biāo)返回原點(diǎn)void LCD_Write(bit style, unsigned char input) E=

11、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)置顯示模式*#define LCD_SHOW 0*04 /顯示開#define LCD_HIDE 0*00 /顯示關(guān) #define LCD_CURSOR 0*02 /顯示光標(biāo)#define LCD_NO_CURSOR 0*00 /無光標(biāo) #define LCD_FLASH 0*01 /光標(biāo)閃動(dòng)#define LCD_NO_FLASH 0*00 /光標(biāo)不閃動(dòng)void LCD_SetDispl

12、ay(unsigned char DisplayMode) LCD_Write(LCD_MAND, 0*08|DisplayMode); /設(shè)置輸入模式*#define LCD_AC_UP 0*02#define LCD_AC_DOWN 0*00 / default#define LCD_MOVE 0*01 / 畫面可平移#define LCD_NO_MOVE 0*00 /defaultvoid LCD_SetInput(unsigned char InputMode) LCD_Write(LCD_MAND, 0*04|InputMode);/初始化LCD*void LCD_Initial()

13、 E=0; LCD_Write(LCD_MAND,0*38); /8位數(shù)據(jù)端口,2行顯示,5*7點(diǎn)陣 LCD_Write(LCD_MAND,0*38); LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); /開啟顯示, 無光標(biāo) LCD_Write(LCD_MAND,LCD_CLEAR_SCREEN); /清屏 LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); /AC遞增, 畫面不動(dòng)/液晶字符輸入的位置*void Goto*Y(unsigned char *, unsigned char y) if(y=0) LCD_Write(LCD_MAN

14、D,0*80|*); if(y=1) LCD_Write(LCD_MAND,0*80|(*-0*40);/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(shí)函數(shù)void delay(int z)/z為毫秒數(shù)int *,y;for(*=z;*0;*-)for(y=125;y0;y-);void main() unsig

15、ned int temp,humi;value humi_val,temp_val;/定義兩個(gè)共同體，一個(gè)用于濕度，一個(gè)用于溫度/float dew_point; /用于記錄露點(diǎn)值unsigned char error; /用于檢驗(yàn)是否出現(xiàn)錯(cuò)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 Goto*Y(0,0); /選擇溫度顯示位置 Print(TEMP: %C); /5格空格 Goto*Y(0,1); /選擇濕度顯示位置 Print(HUMI: %RH);

16、 /5格空格s_connectionreset(); /啟動(dòng)連接復(fù)位while(1)error=0; /初始化error=0，即沒有錯(cuò)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(); /如果發(fā)生錯(cuò)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(jì)算e dew_point temp=temp_val.f*10; humi=humi_val.f*10; Goto*Y(5,0);/設(shè)置溫度顯示位置 wendu0=temp/1000+0; /溫度百位 wendu1=temp%1000/100+0; /溫度十位 wendu2=temp%100/10+0;