基于单片机SHT11温湿度采集报警系统设计-全套资料

Posted 2021-05-15 Mr song song

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#include<reg51.h> 
#include <intrins.h>  
#include <math.h>   
#include <stdio.h>    
#define LCD_DB        P0 
sbit         LCD_RS=P2^0;   
sbit         LCD_RW=P2^1;  
sbit         LCD_E=P2^2;     
sbit         beep = P1^7;
sbit         key1 = P3^0;
sbit         key2 = P3^1;
sbit		     key3 = P3^2;
sbit		     key4 = P3^3;

unsigned char Time;		  //用来存放定时时间
unsigned char Second;
unsigned char w;  //标志位
unsigned char wendumode = 0;
unsigned char shidumode = 0;
unsigned char  wenduCB = 40;
unsigned char  shiduCB = 100;
unsigned int wendu,shidu;     

/******定义函数****************/ 
#define uchar unsigned char 
#define uint unsigned int 
void LCD_init(void);                          //初始化函数 
void LCD_write_command(uchar command);        //写指令函数 
void LCD_write_data(uchar dat);               //写数据函数  
void LCD_disp_char(uchar x,uchar y,uchar dat);//在某个屏幕位置上显示一个字符,X（0-15),y(1-2)  
void LCD_disp_str(uchar x,uchar y,uchar *str); //LCD1602显示字符串函数 
void delay_n10us(uint n);                     //延时函数