DHT11_LCD1602溫濕度檢測(cè)與顯示程序

1、/DHT11.C文件#include<reg52.h>#include<Time.Delay.h>/themainonlyneedstocallgelDHTIl()jhenthetemperatureandhuminitywasgotinF16T.F16RHasfloatsbitbitll=P2A0;unsignedcharU8T_data_H,U8T_dala_U8RH_dala_H,U8RH_dala_L.U8checkdala:floatFI6T,F16RH:川丁最終讀取的溫濕度數(shù)據(jù)/read8bitsonicecharCOM(void)chari.U8lemp.

2、U8comdata;for(i=0;i<8;i+)while(!bitll);表小讀取的高電位延時(shí)大于20多us則讀取的是I否則讀取的是0Delay_us(35);通過(guò)U8FLAG可判斷billl顯小數(shù)據(jù)的脈長(zhǎng)U8temp=();if(bitlI)U8temp=l;while(bitl1);U8comdata«=l;U8comdatal=U8temp;/()/rofreturnU8comdata;/-/一一溫濕度讀取子程序.一以下變量均為全局變量-溫度高8位=U8T_data_H-小-溫度低8位=U8T_data_L-濕度高8位=U8RH_data_H-一濕度低8位=U8RH_

3、data_L-一校驗(yàn)8位=U8checkdata一一一調(diào)用相關(guān)子程序如下/-Delay。;.Delay_l()us();tCOM();voidgetDHTII(void)主機(jī)拉低18msGOI:bit11=0;Delay_ms(20);bill1=1;總線由上拉電阻拉高上機(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)是否有低電平響應(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(!bitlI);/waitDHTgotohighwhile(bitl1);數(shù)據(jù)接收狀態(tài)U8RH_dala_H=COM();U8RH_daUi_L=

4、COM();U8T_data_H=COM();U8T_data_L=COM();U8checkdata=COM();bill1=1;數(shù)據(jù)校驗(yàn)if(U8T_dala_H+U8T_da【a_L+U8RH_dala_H+U8RH_dala_L)!=l18checkdata)/ifcheckwrong.readagaingotoGOI;/fiF16T=U8T_data.H+(float)U8T_data_L/256;/changeintegertofloatF16RH=U8RH_data_H+(float)U8RH_data_L/256:/LCD1602文件#include<reg52.h>

5、;#include<stdio.h>include<INTRINS.H>#include<Lcd_1602.h>#include<Time_Delay.h>#defineLCD_DATAPO/LCD1602datatransferdefine#detmeuintunsignedint#detmeucharunsignedchar/*只由主函數(shù)倜用的白Init_Lcd()LCD_write_str(ucharX,ucharY.uchar*s)LCD_vaIue(unsigncdcharx,unsignedchary,floalf)*/sbitLCD

6、.RS=P2A5;/16()2controldefinesbitRW=P2A6;sbitLCD_E=P2A7;OxOC顯示開0x08顯示關(guān)OxOA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)新數(shù)據(jù)后光標(biāo)右移新數(shù)據(jù)后光標(biāo)左移畫面可平移畫而不可平移/*木*李*豐*4：*字*±*#detlneLCD_SCREEN_ON#defineLCD_SCREEN_OFF#defincLCD_CURSOR_ON#defineLCD_CURSOR_OFF#defineLCD_C_FLASH_ON#defineLCD_C_FLASH_OFF進(jìn)入模式設(shè)置指令#defineLCD_

7、AC_UP0x06#defineLCD_AC_DOWN0x04#detlneLCD_S_MOVE_ON0x05#defineLCD_S_MOVE_OFF0x04設(shè)定顯小圻或光標(biāo)移動(dòng)方向指令#defineLCD.C_LEFT0x10光標(biāo)左移1格，且AC值減I#defineLCD_C_RIGHT0x11光標(biāo)右移1格，且AC值加I#detlneLCD_CHAR_L,EFT0x18顯示器上字符全部左移格，但光標(biāo)不動(dòng)#defineLCD.CHAR.RIGHTOxIC顯示器上字符全部右移一格，但光標(biāo)不動(dòng)*察*左*米*卡*本*本*x*木*/注仃上函數(shù)調(diào)用的函數(shù)都己作說(shuō)明其他函數(shù)一般不由上函數(shù)調(diào)用/*本*4：

8、* 名稱：IniLLcdO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：在上函數(shù)中直接調(diào)用*京*木*木*本*率><*東*/voidInit_Lcd()LCD初始化LCD_write_char(0x38,。);Delay_ms(1);I-CD_writjchar(Ox3X,0);Delay_ms(I);LCD_write_char(Ox38.O);Delay_ms(I);LCD_wri(e_char()x()c,();Delay_ms(I);LCD_wite_char(0x06,0);Delay_ms(1);LCD_write_char()x()c,();

9、Delay_ms(I);/* 名稱：LCD_wnte_str(ucharX.ucharY.uchar*s)上函數(shù)調(diào)用* 功能：在指定地址寫一個(gè)字符申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(1,Lucliar*s)*屯*拿*/voidLCD_write_str(unsignedcharX.unsignedcharY.unsignedchar*s)(LCD_wrile_char(O,'LCD_set_xy(X,Y);寫地址while(*s)/寫顯示字符

10、LCD_write_char(0,*s);s+;/*本*theopticsignflash?* 名稱：LCD_sel_xy(ucharx,uchary)* 功能：指定一個(gè)地址* 入I參數(shù)：X:橫坐林Y：縱坐標(biāo)* 出I參數(shù)：無(wú)*x*cdsetxy* 范例：LCD_set_xy(5.l)*：1：*"*：*：*voidLCD_set_xy(ucharx,uchary)寫地址函數(shù)(unsignedcharaddress;if(y=0)address=0x8()+x;elseaddress=OxcO+x;LCD_write_char(address.0);/*宇* 名稱：LCD_en_writ

11、e(void)* 功能：液晶使能* 入口參數(shù)：無(wú)* 出口參數(shù)：無(wú)* 范例：宜接調(diào)用* *«木木木*本木本木本*C)sexy*本木東京東木木本木木木東東東木*本木木*本東東東*木x*木木木本*本木東木京木木東水木東東本東木木*孝木木木本*/voidLCD_en_write(void)液晶使能_nop_();LCD_E=1：/EN=1op_()；LCD_E=0;/EN=0)/*#* 名稱：LCD_write_char(ucharcd,ucharab)功能：寫指令或數(shù)據(jù)當(dāng)寫ab時(shí)應(yīng)使cd=()當(dāng)cd不為0則寫cd且ab的賦值無(wú)效*入I參數(shù)：cd:指令內(nèi)容ab:數(shù)據(jù)內(nèi)容指令常量已在上面定義但

12、一般不用*出口參數(shù)：無(wú)* 范例：LCD_wilc_char(0,嚇)*去*w*號(hào)*)k/CDsetxy*：«：*小*/voidLCD.write_char(ucharcd.ucharab)/寫數(shù)據(jù)Delay_us(20):if(cd=O)(LCD_RS=1;/RS=I,寫顯示內(nèi)容LCD_byte(ab);)elseILCD_RS=0：/RS=0.寫命令LCD_byte(cd);/*：|：*木*：|：*左*4：*：1：*：|；*東*字* 名稱：LCD_byte(abc);中功能：寫個(gè)字符到oicall"onebytetoLCD中* 入口參數(shù)：* 出I參數(shù)：無(wú)* *ij：*.C

13、Dsetxy*率*率*岸*率*率*/voidLCD.byte(unsignedcharabc)(RW=0;LCD_E=0;LCD.DATA=abc;LCD_en_wile();在液晶中顯示浮點(diǎn)數(shù)函數(shù)LCD_vaIue(unsignedcharx,unsignedchary,floatf)unsignedcharstr|15;不能定義為char*str,數(shù)組長(zhǎng)度一定要大于浮點(diǎn)數(shù)的總位數(shù)sprintf(str,"%.lff);/I表示小數(shù)位數(shù)小數(shù)太多自動(dòng)四舍五.入LCD_write_str(x,y,str);return0;主函數(shù)文件#include<reg52.h>#inc

14、lude<intrins.li>include<Lcd_16O2.h>#include<Time_DeIay.h>#includeltDHTli.ht,externfloatF16T,FI6RH;全局變量聲明voidmain()(InicLcdO;LCD_write_str(OJ,"abc");液晶預(yù)顯小測(cè)試LCD_value(0,0,34.345);Delay_ms(2000);Init_Lcd();whilc(l)(getDHTl1();LCD_write_str(0,0,"T=");LCD_value(3,0.FI6T)：LCD_write-str(8.0.',',C");字符"應(yīng)用轉(zhuǎn)義格式LCD_write_str(0,1,"RH=");LCD.vaIue(4J,FI6RH);LCD_wriie_str(9,1);Delay_ms(500);/延時(shí)函數(shù)文件以下為延時(shí)函數(shù)thisisfittooldC5112MHz,12devidefreqencyvoidDelay_ms(unsignedintn)/