《环境监测仪》word版

1、.#include <reg52.h>#include <intrins.h>/#define LCD_data P0 /数据口typedefunsigned char unint8;typedefunsigned char unint16;#define power_down 0x00#define power_on 0x01#define reset 0x07#define h_resolution_mod 0x10#define m_resolution_mod 0x13#define l_resolution_mod 0x16#define onetime_h

2、0x20#define onetime_m 0x23#define onetime_l 0x26#define write_1710 0x46#define read_1710 0x47sbit SCL = P10;sbit SDA = P11;sbit dvi = P12;unsigned char str1=" "unsigned char str2=" "char str3=" "unsigned char code wel1 = "*"unsigned char code wel2 = "| We

3、lcome You !|"unsigned char code wel3 = "| MADE: 李培陈杰"unsigned char code wel4 = "*"unsigned char code dis1 = "温湿度检测系统："unsigned char code dis2 = "湿度： %RH "unsigned char code dis3 = "温度: C "unsigned char code dis4 = "光强: LX "sbit TRH = P

4、36;sbit Beep = P15 ; sbit LCD_RS = P24; /寄存器选择输入 sbit LCD_RW = P25; /液晶读/写控制sbit LCD_EN = P26; /液晶使能控制sbit LCD_PSB = P21; /串/并方式控制sbit LCD_RST = P23; /液晶复位端口unint8TH_data,TL_data,RH_data,RL_data,CK_data;unint8TH_temp,TL_temp,RH_temp,RL_temp,CK_temp;unint8com_data,untemp,temp;unint8respond;/*/void de

5、layNOP()_nop_();_nop_();_nop_();_nop_();/*/*/ 毫秒级延时子程序/*/void delay_ms(unsigned char ms)unsigned char i;while(ms-)for(i = 0; i<250; i+)_nop_();_nop_();_nop_();_nop_();/*/*/5us级延时程序/*/void delay_us()unint8 i;i-;i-;i-;i-;i-;i-; /*/ /*/ 测试LCD忙碌状态/lcd_busy()为1时，忙，等待。lcd_busy()为0时,闲，可写指令与数据。/*/bit lcd

6、_busy() bit result; LCD_RS = 0; LCD_RW = 1; LCD_EN = 1; delayNOP(); result = (bit)(P0&0x80); LCD_EN = 0; return(result);/*/*/ 写入指令数据到LCD/*/void lcd_wcmd(unsigned char cmd) while(lcd_busy(); LCD_RS = 0; LCD_RW = 0; LCD_EN = 0; _nop_(); _nop_(); P0 = cmd; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN

7、 = 0;/*/*/写显示数据到LCD /RS=高电平，RW=低电平，E=高脉冲，D0-D7=数据。 /*/void lcd_wdata(unsigned char dat) while(lcd_busy(); LCD_RS = 1; LCD_RW = 0; LCD_EN = 0; P0 = dat; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN = 0; /*/*/LCD初始化设定/*/void lcd_init() LCD_PSB = 1; /并口方式 LCD_RST = 0; /液晶复位 delay_ms(3); LCD_RST = 1; dela

8、y_ms(3); lcd_wcmd(0x34); /扩充指令操作 delay_ms(5); lcd_wcmd(0x30); /基本指令操作 delay_ms(5); lcd_wcmd(0x0C); /显示开，关光标 delay_ms(5); /lcd_wcmd(0x01); /清除LCD的显示内容 /delay_ms(5);/*/*/设定LCD显示位置/*/void lcd_dis_pos(unsigned char X,unsigned char Y)unsigned char pos; if (X=1)X=0x80; else if (X=2)X=0x90; else if (X=3)X=

9、0x88; else if (X=4)X=0x98; pos = X+Y ; lcd_wcmd(pos); /显示地址void lcd_pos(unsigned char X,unsigned char Y)unsigned char pos; if (X=2)pos=0x90; if (X=3)pos=0x88;if (X=4)pos=0x98;lcd_wcmd(Y | pos);/数据指针=80+地址变量/*/*/* * 清屏函数 * */void clr_screen() lcd_wcmd(0x34); /扩充指令操作 delay_ms(5); lcd_wcmd(0x30); /基本指令

10、操作 delay_ms(5); lcd_wcmd(0x01); /清屏 delay_ms(5); /*/*/收发信号检测，数据读取/*/char receive() unint8 i;com_data=0;for(i=0;i<=7;i+) respond=2;while(!TRH)&&respond+);delay_us();delay_us();delay_us();if(TRH)temp=1;respond=2;while(TRH)&&respond+); elsetemp=0;com_data<<=1; com_data|=temp; r

11、eturn(com_data); /*/*/湿度读取子程序 /温度高8位= TL_data/温度低8位= TH_data/湿度高8位= RH_data/湿度低8位= RH_data/校验 8位 = CK_data/调用的程序有 delay();, Delay_5us();,RECEIVE(); /*/void read_TRH()int m;/主机拉低18ms TRH=0; delay_ms(18); TRH=1;/DATA总线由上拉电阻拉高 主机延时20us delay_us(); delay_us(); delay_us(); delay_us();/delay_us();/delay_u

12、s();delay_us();delay_us();delay_us();/主机设为输入 判断从机响应信号 TRH=1;/判断DHT11是否有低电平响应信号 如不响应则跳出，响应则向下运行 if(!TRH) respond=2;/判断DHT11发出 80us 的低电平响应信号是否结束 while(!TRH)&& respond+);respond=2;/判断从机是否发出 80us 的高电平，如发出则进入数据接收状态while(TRH && respond+);/数据接收状态 RH_temp = receive(); RL_temp = receive(); TH

13、_temp = receive(); TL_temp = receive(); CK_temp = receive();TRH=1; /数据校验 untemp=(RH_temp+RL_temp+TH_temp+TL_temp);if(untemp=CK_temp) RH_data = RH_temp; RL_data = RL_temp;TH_data = TH_temp; TL_data = TL_temp; CK_data = CK_temp;/湿度整数部分str10 = (char)(0X30+RH_data/10); str11 = (char)(0X30+RH_data%10);/温

14、度整数部分str20 = (char)(0X30+TH_data/10); str21 = (char)(0X30+TH_data%10);m=(int)(RH_data);void welcome()unsigned char i;lcd_dis_pos(1,0);for(i=0;i<16;i+) /显示字符lcd_wdata(wel1i);lcd_dis_pos(2,0);for(i=0;i<16;i+) /显示字符lcd_wdata(wel2i);lcd_dis_pos(3,0);for(i=0;i<16;i+) /显示字符lcd_wdata(wel3i);lcd_di

15、s_pos(4,0);for(i=0;i<16;i+) /显示字符lcd_wdata(wel4i);/delay_ms(100000); /bh1710/void delay120ms(void) unsigned char a,b,c; for(c=199;c>0;c-) for(b=120;b>0;b-) for(a=1;a>0;a-);void delayus() ; void BH_start() /dvi = 0;SDA=1; delayus(); SCL=1; delayus(); SDA=0; delayus();/dvi = 1;/delay120ms(

16、);/dvi = 0;/delay120ms();/dvi = 1;void BH_stop() SDA=0; delayus(); SCL=1; delayus(); SDA=1;void BH_respons() unsigned char i; SCL=1; delayus(); while(SDA=1)&&(i<250)i+; SCL=0; delayus();void init_BH() SDA=1; delayus(); SCL=1; delayus(); void BH_write_byte(unsigned char date) unsigned char

17、 i,temp; for(i=0;i<8;i+) temp=date&0x80; SCL=0; delayus(); SDA=temp; delayus(); SCL=1; delayus(); date=date<<1; SCL=0; delayus(); SDA=1; delayus();unsigned char BH_read_byte() unsigned char i,k; SCL=0; delayus(); SDA=1; delayus(); for(i=0;i<8;i+) SCL=1; delayus(); k=(k<<1)|SDA;

18、 SCL=0; delayus(); return k;void write_reg(unsigned char address,unsigned char shuju) BH_start(); BH_write_byte(address); BH_respons(); BH_write_byte(shuju); BH_respons(); BH_stop();unsigned int read_reg(unsigned char address) unsigned char date2; unsigned char date1; unsigned int date; BH_start();

19、BH_write_byte(address); BH_respons(); date1=BH_read_byte(); SCL=0; delayus(); SDA=0; delayus(); SCL=1; delayus(); date2=BH_read_byte(); SCL=0; delayus(); SDA=0; delayus(); SCL=1; delayus(); BH_stop(); date=date*256+date2; return date;unsigned int bh1710_read() int bh; write_reg(write_1710,power_on); write_reg(write_1710,reset); write_reg(write_1710,h_resolution_mod); delay120ms(); delay120ms(); bh=read_reg(read_1710); return bh; void read_Dat(void)unsigned char lx;init_BH(); lx= bh1710_read();str30 = lx%1000/100+'0'str31 = lx%100/10+'0'str32 = lx%10+'0'/