DHT11LCD1602溫濕度檢測(cè)與顯示程序

1、/DHT11.C 文件#include#include/the main only needs to call gel DHTI l()jhen the temperature and liuminity was got inF16T.F16RH as floatsbit bitll=P2A0;unsigned char U8T_data_H,U8T_data_L.U8RI Ldata_H,USRl Ldata_L,U8checkdala;float FI6T.F16RH:川于最終讀取的溫濕度數(shù)據(jù)/ read 8 bits onicechar COM(void)char itU8temp.U8

2、comdala; for(i=0;i8;i +)while(!bitll); 表小讀取的高電位延時(shí)人于20 us則讀取的是I占則讀取的是0Delay_us(35);通過(guò)U8FLAG可判斷 bill I顯水?dāng)?shù)據(jù)的脈長(zhǎng)U8temp=();if(bit 11 )U8temp=l;while(bitl 1);U8comdata=l;U8comdatal=U8temp;/()/rofreturn UScomdata;/-/溫濕度讀取子祝序/一以下變量均為全局變量/-湍度高8位=U8T_data_H- 淋度低8位=U8T_data_L .濕度髙 8 位=U8RH_data_H .濕度低 8 位=U8RM_

3、data_L- /校驗(yàn) 8 位=UScheckdata 一調(diào)用相關(guān)子程序如下一- /-Dclay()； Delay_l()us();tCOM(); void getDHTI I (void)上機(jī)拉低18msGOI:bit 11=0;Delay_ms(20);bill 1=1;/總線由上拉電阻拉高 匸機(jī)延時(shí)20usDelay_us(60);/主機(jī)設(shè)為輸入判斷從機(jī)響應(yīng)信號(hào)/ bitll = l;判斷從機(jī)是占何低電平響應(yīng)信號(hào)如不響應(yīng)則跳出，響應(yīng)則向下運(yùn)行 if(!bitll) T!while(!bit 11); /wait DHT goto high while(bitll);/數(shù)據(jù)接收狀態(tài)UXRH

4、_daki_H=COM();UXRH.data.L=COM();U8TdataJI=COM();U8T_data_L=COM();U8checkdata=COM();bill 1=1;數(shù)據(jù)校驗(yàn)if(U8T_data.H+U8T_data.L+U8RH_data.H+U8RH.data_L)!=U8checkdata) 訐check wrong.read againgoto GOI;/fiF16T=U8T_data.H+(float)U8T_data_L/256; /change integer to floatFI6RH=U8RH_dataH+(float)U8RHdata_L/256;/LC

5、D1602 文件#include#include include #include vLcd_1602h#include #define LCD_DATA H)/LCD 1602 data transfer define#define uint unsigned int#define uchar unsigned char廠只由丄函數(shù)凋用的有Init_Lcd()LCD_wri te_str( uchar X,uchar Y.uchar *s)LCD_vaIue(unsigncd char x,unsigned char y,floal f)*/sbit LCD.RS = P2A5;/1602

6、control definesbit RW = P2A6;sbit LCD_E = P2人7;/* *：!：* *：!：*# *木* *：!：*# *#detlne LCD_SCREEN_ON#define LCD_SCREEN_OFF#definc LCD_CURSOR_ON#define LCD_CURSOR_OFF#define LCD_C_FLASH_ON #define LCD_C_FLASH_OFF進(jìn)入模式設(shè)迸指令顯示開(kāi)顯示關(guān)顯示光標(biāo)0x0c /無(wú)光標(biāo)OxOf/有光標(biāo)，光標(biāo)閃動(dòng)OxOe/有光標(biāo)，光標(biāo)不閃動(dòng)OxOC0x08OxOA#define LCD_AC_UP 0x06新數(shù)據(jù)后光

7、標(biāo)右移新數(shù)擁后光林左移/ uai面可平移畫(huà)血不可平移#detlne LCD.AC.DOWN 0x04 #detlne LCD_S_MOVE_ON 0x05 #define LCD_S_MOVE_OFF 0x04 /設(shè)定顯J屏或光標(biāo)移動(dòng)方向指令#define LCD.CLEFT 0x10 光標(biāo)左移 1 格，且 AC 值減 I#define LCD_C_RIGHT 0x11光標(biāo)右移1格.且AC值加丨#detlne LCD_CHAR_L,EFT 0x18顯示器上字符全部左移格，但光標(biāo)不動(dòng)#define LCD.CHAR.RIGHT OxIC顯示器上字符全部右移-格.但光標(biāo)不動(dòng)*：!：* * 木客*

8、宕*/注 仃丄函數(shù)調(diào)用的函數(shù)那C作說(shuō)明 具他函數(shù)般不由丄函數(shù)調(diào)用/*#* 老*：|：* 牝宅*名 稱:Init_Lcd()上函數(shù)調(diào)用*功 能：Led初始化*入口參數(shù)：無(wú)*出口參數(shù)：無(wú)*范 例：在匸函數(shù)屮鬥按調(diào)用void Ini【_Lcd()/LCD初始化LCD_wrilc_chiir(0x3&();Delay_ms( 1);I-C D_wri te_c h ar( Ox 3&0);Dcla_ms( I);LCD_wrile_char()x3&();Delay_ms( I);I,CD_wi【e_char()x(k();Delay_ms( I);LC D_ wi (e_c h ar( 0x06 J

9、):Delay_ms( 1);LCD_write_char(0x0c,0);Delay_ms( I);/* 名 稱：LCD_wi(e_sl(uchaXuchar Yuchar 牡)丄函數(shù)淌用* 功 能：在指定地址寫(xiě)一個(gè)字符吊eg:Y=0.1,2.3.4.5.6.7.8.9.10. 15=X=()J0*入口參數(shù)：X:橫坐標(biāo)Y：縱坐標(biāo)*s：字符串首地址*出口參數(shù)：無(wú)* 范 例：LCD_write_str( 1J ,uchar *s) *#*/ void LCD_write_str(unsigned char X.unsigned char Y.unsigned char *s)(LCD-Wrile

10、-CharfO,*);LCD_set_xy( X. Y );/寫(xiě)地址while (*s)/寫(xiě)顯示字符LCD_write_char( 0, *s );s +;/*the optic sign flash?水名稱：LCD_scl_xy( uchar x, uchar y )*功能：指定一個(gè)地址*入口參數(shù):X:橫坐標(biāo)Y：縱坐標(biāo)*出I參數(shù)：無(wú)* 范 例：LCD_sel_xy(5.l)*?*3i：*CD setxy*未*木示*賽/void LCD-Set_xy( uchar x. uchar y ) 寫(xiě)地址函數(shù) unsigned char address;if (y = 0) address = 0x8

11、() + x;elseaddress = OxcO + x;LCD_write_char( address. 0 );/* * 名 稱：LCD_en_write(void)*功 能：液晶使能*入I參數(shù)：無(wú)*出口參數(shù)：無(wú)*范 例：頁(yè)接調(diào)用 木* 水木次*木* * 本水C)scl xy*55 * *void LCD_en_write(void)液晶使能_nop_();LCD_E=1：/EN=1op_();LCD_E=0;/EN=0/* 宕* 水*：!：* * * 半名 稱：LCD_write_char(uchar cd,uchar ab)*功 能：篤指令或數(shù)據(jù) 當(dāng)寫(xiě)“b時(shí) 應(yīng)使cd=() 當(dāng)cd不

12、為0則寫(xiě)cd且“b的賦值 無(wú)效*入口參數(shù)：cd:指令內(nèi)容ab:數(shù)據(jù)內(nèi)容指令常慣已在上血定義但一般不用*出口參數(shù)：無(wú)* 范 例：LCD_write_char( 0,f) *x*：e：*_CD set xy* 米*水水*$/void LCD.write_char(uchar cd.uchar ab) / 寫(xiě)數(shù)據(jù)Delay _us(20):if(cd=O)LCD_RS= 1;/RS= I,寫(xiě)顯示內(nèi)容LCD_byte(ab);elseILCD_RS=0：/RS=0 寫(xiě)命令LCD_byte(cd);/* 水*：|：4：*：|:：|；*：|：(：*:|：*4：*稱：LCDbyte(abc);屮功 能：寫(xiě)

13、個(gè)字符到or called one byte to LCD屮*入口參數(shù)：*出I參數(shù)：無(wú)寧*字水務(wù)cd set xy*字*眾*拳*字*專水* 厚* 學(xué) SC*/ void LCD_byle(unsigned char abc) RW = 0;LCD_E = 0;LCD.DATA = abc;LCDenwriteO；在液晶屮顯示浮點(diǎn)數(shù)函數(shù)LCD_vaIue(unsigned char x,unsigned char y,float f)unsigned char str| 15); 數(shù)的總位數(shù) sprintf(str/r%.irf); LCD_write_str( x, y, str); retu

14、rn 0;/字符”應(yīng)用轉(zhuǎn)義格式不能定義為char* sm數(shù)組長(zhǎng)度一定要人T浮點(diǎn)/I表示小數(shù)位數(shù)小數(shù)太務(wù)門(mén)動(dòng)四舍五入/主函數(shù)文件#include #include include #include #includellDHTli.ht,extern float FI6T.FI6R比全局變杲聲明void main ()InicLcdO;LCD_write_str()J，”abc”)； 液晶預(yù)顯示測(cè)試LCD_value(0,034.345);Delay_ms(2000);Init_Lcd();whilc(l)getDHTl 1();LCD_write_str(OO/fT=H);LCD.value(3AFI6T)： LCD.write.str(8,()：VCM);LCD_wrhe_sir()；rRH=n);LCDvalue(4J .Fl 6RH);LCD_wrile_s(9.1 J;Delay_ms(500);/延時(shí)函數(shù)文件以卜為延時(shí)函數(shù) this is fit to old C5112MHz, 12 devide freqencyvoid Delay_ms(unsigned int n)/n 亳秒延時(shí)u