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请问程序为何不能显示DH11温湿度传感器的数值？

2018-7-28 18:18:15 1849 DH11 温湿度传感器

0 `源程序如下，DH11按资料提供的参照图接线。数据传输口为P2.2, 注释乱码了，请大神看附件 //ÒÑÓÃ¶Ë¿Ú£ºP2.5,P2.6,P2.7,P3.2,P3.4,P0 #include #include /********LCD_12864***********************/ #define uchar unsigned char #define unint unsigned int #define LCD_DATA P0 it LCD_RS=P2^6; it LCD_RW=P2^5; it LCD_EN=P2^7; it LCD_PSB=P3^2; it LCD_RES=P3^4; /********ÑÓÊ±xms********* void delay_xms(uint a) { uint i,j; for(i=a;i>0;i--) for(j=110;j>0;j--); } **************************/ //*************************** /**********ÑÓÊ±1ms********/ void delay1ms() { unsigned char i,j; for(i=0;i<4;i++) for(j=0;j<33;j++);//(3j+2)i=(3¡Á33+2)¡Á10=1010(Î¢Ãë)£¬¿ÉÒÔÈÏÎªÊÇ1ºÁÃë } /*********ÑÓÊ±xms**********************/ void delay_xms(uchar n) { unsigned char i; for(i=0;i delay1ms(); } /************************************************* /*****ÅÐÃ¦*************/ bit check_busy() { bit busy; LCD_RS=0; LCD_RW=1; LCD_EN=1; delay_xms(2); busy=(bit)(LCD_DATA&0X80); LCD_EN=0; return busy; } //µÈ´ýLCD¿ÕÏÐ void wait() { while(check_busy()); } //************************** /*********Ð´Ö¸Áî********/ void write_cmd(uchar cmd) { wait(); LCD_RS=0; LCD_RW=0; LCD_EN=0; delay_xms(2); LCD_DATA=cmd; LCD_EN=1; delay_xms(2); LCD_EN=0; } //*************************** /*********Ð´Êý¾Ý***********/ void write_data(uchar dat) { wait(); LCD_RS=1; LCD_RW=0; LCD_EN=0; delay_xms(5); LCD_EN=1; LCD_DATA=dat; delay_xms(10); LCD_EN=0; } //********************************* /*******LCD_12864³õÊ¼»¯*********/ void initial_12864() { delay_xms(40); LCD_PSB=1; delay_xms(1); LCD_RES=0; delay_xms(1); LCD_RES=(1); write_cmd(0x30);//»ù±¾Ö¸Áî delay_xms(10); write_cmd(0x0c);//¿ªÏÔÊ¾£¬¹Ø¹â±ê delay_xms(10); write_cmd(0x01);//ÇåÆÁ delay_xms(10); } //********************************** /*******×Ö·û´®Ð´ÈëµØÖ·**********/ void LCD_POS(uchar X, uchar Y) { uchar pos; if(X==0) {X=0x80;} if(X==1) {X=0x90;} if(X==2) {X=0x88;} if(X==3) {X=0x98;} pos=X+Y; write_cmd(pos); } //************************************* /***********×Ö·û´®Ð´ÈëÏÔÊ¾***********/ unsigned char LCD_DISPLAY(uchar x, uchar y, uchar DATA) { int i=0; LCD_POS(x,y); while(DATA!='') { write_data(DATA); i++; } return 0; } //****************************************** /*******************DH11_ÎÂÊª¶È´«¸ÐÆ÷Ä¿Ç°Ö»ÏÔÊ¾Êª¶È**************************/ //ÒÑÓÃ¶Ë¿Ú£ºP2.2 it DH11_IC=P2^2; //DH11µÄÊý¾Ý¿Ú unsigned char DH11_temp; unsigned char DH11_data; unsigned char RH_DATA_H_TEMP,RH_DATA_L_TEMP,T_DATA_H_TEMP,T_DATA_L_TEMP,CHECK_DATA_TEMP;//RH_Êª¶È£¬T_ÎÂ¶È unsigned char RH_DATA_H,RH_DATA_L,T_DATA_H,T_DATA_L,CHECK_DATA; unsigned char DISPLAY_HUMIDITY[]={" "}; //´æ·ÅÏÔÊ¾µÄÊª¶ÈÖµ unsigned char DISPLAY_WENDU[]={" "}; //´æ·ÅÏÔÊ¾µÄÎÂ¶ÈÖµ unsigned char RH_T_TEMP[2]; void delay_10us(void) { uchar i; i--; i--; i--; i--; i--; i--; } void DH11_COM(void) { uchar i; for(i=0;i<8;i++) { while(!DH11_IC); delay_10us(); delay_10us(); delay_10us(); delay_10us(); delay_10us(); DH11_temp=0; if(DH11_IC) //ÅÐ¶ÏÊý¾ÝÎ»ÊÇ0»¹ÊÇ1,·¢³öµÍµçÆ½Êý¾Ý¿ªÊ¼ÐÅºÅºó£¬Êý¾ÝÀ¸ß£¬¸ßµçÆ½µÄÊ±¼ä¾ö¶¨Êý¾ÝÎ»Îª1»òÕß0£¬ DH11_temp=1; //µ±¸ßµçÆ½Ê±¼äÐ¡ÓÚ30usÊ±Îª0£¬´óÓÚ30usÇÒÐ¡ÓÚ70usÎª1£¬´óÓÚ70usÔò½øÈëÏÂÒ»¸öbit while (DH11_IC); //µÈ´ýÊý¾Ý½ÓÊÜÍê DH11_data<<=1; //×óÒÆÒ»Î» DH11_data\|=DH11_temp; //½«¸ÃÎ»¸³¸øDH11_data } } //-------------------------------- //-----Êª¶È¶ÁÈ¡×Ó³ÌÐò ------------ //-------------------------------- //----ÒÔÏÂ±äÁ¿¾ùÎªÈ«¾Ö±äÁ¿-------- //----ÎÂ¶È¸ß8Î»== U8T_data_H------ //----ÎÂ¶ÈµÍ8Î»== U8T_data_L------ //----Êª¶È¸ß8Î»== U8RH_data_H----- //----Êª¶ÈµÍ8Î»== U8RH_data_L----- //----Ð£Ñé 8Î» == U8checkdata----- //----µ÷ÓÃÏà¹Ø×Ó³ÌÐòÈçÏÂ---------- //---- Delay();, Delay_10us();,COM(); //-------------------------------- void R_H(void) { DH11_IC=0; delay_xms(18); //Ö÷»úÀµÍ18ms DH11_IC=1; delay_10us(); //×ÜÏßÓÉÉÏÀµç×èÀ¸ß Ö÷»úÑÓÊ±20-40us delay_10us(); delay_10us(); delay_10us(); delay_10us(); DH11_IC=1; if(!DH11_IC) //Ö÷»úÉèÎªÊäÈë ÅÐ¶Ï´Ó»úÏìÓ¦ÐÅºÅ { while(!DH11_IC); //ÅÐ¶Ï´Ó»úÊÇ·ñ·¢³ö 80us µÄµÍµçÆ½ÏìÓ¦ÐÅºÅÊÇ·ñ½áÊø while(DH11_IC); //ÅÐ¶Ï´Ó»úÊÇ·ñ·¢³ö 80us µÄ¸ßµçÆ½£¬Èç·¢³öÔò½øÈëÊý¾Ý½ÓÊÕ×´Ì¬ DH11_COM(); //Êý¾Ý½ÓÊÕ×´Ì¬ RH_DATA_H_TEMP=DH11_data; DH11_COM(); RH_DATA_L_TEMP=DH11_data; DH11_COM(); T_DATA_H_TEMP=DH11_data; DH11_COM(); T_DATA_L_TEMP=DH11_data; DH11_COM(); CHECK_DATA_TEMP=DH11_data; DH11_IC=1; //×ÜÏßÀ¸ß£¬½øÈë¿ÕÏÐÄ£Ê½ //data check! DH11_temp=(T_DATA_H_TEMP+T_DATA_L_TEMP+RH_DATA_H_TEMP+RH_DATA_L_TEMP); if(DH11_temp==CHECK_DATA_TEMP) { if(RH_DATA_H_TEMP!=0) { RH_DATA_H=RH_DATA_H_TEMP; RH_DATA_L=RH_DATA_L_TEMP; T_DATA_H=T_DATA_H_TEMP; T_DATA_L=T_DATA_L_TEMP; CHECK_DATA=CHECK_DATA_TEMP; } } } } void display_humidity1() { R_H(); RH_T_TEMP[0]=0x30+RH_DATA_H/10; RH_T_TEMP[1]=0x30+RH_DATA_H%10; //shidu_fen=0x30+RH_DATA_L/10; //wendu_shi=0x30+T_DATA_H/10; //wendu_ge=0x30+T_DATA_H%10; //wendu_fen=0x30+T_DATA_L/10; DISPLAY_HUMIDITY[0]=+RH_T_TEMP[0]; DISPLAY_HUMIDITY[1]=+RH_T_TEMP[1]; //DISPLAY_HUMIDITY[2]='.'; //DISPLAY_HUMIDITY[3]=shidu_fen; //DISPLAY_WENDU[0]=wendu_shi; //DISPLAY_WENDU[1]=wendu_ge; } //Ö÷º¯Êý void main() { initial_12864(); while(1) { LCD_DISPLAY(3,0,"Êª¶È£º"); display_humidity1(); //LCD_DISPLAY(1,3,&DISPLAY_WENDU); LCD_DISPLAY(3,3,&DISPLAY_HUMIDITY); LCD_DISPLAY(3,6,"%"); } } ` DH11.zip (35.46 KB, 下载次数: 0 )* 0
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