51單片機大棚溫濕度檢測顯示源程序與Proteus仿真圖

ID:474195 · 發表于 2021-5-28 21:56

仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機源程序如下:

#include <reg52.h>
#include <intrins.h>
#include <stdio.h>
#include "1602.h"
#include "delay.h"
#include"18b20.h"
#include"i2c.h"
sbit led_l = P1^0;
sbit led_b = P1^1;
sbit fan = P1^4;
sbit relay = P1^3;
sbit key_s = P3^4;
sbit key_a = P3^5;
sbit key_u = P3^6;
unsigned char readTem = 0 ;
unsigned char readADCFlag = 0 ;
int temp;
float temperature = 0;
char disdat[16];
char disset[16];
unsigned long time_20ms=0;
float Lv=0.0;
float Tv=0.0;
unsigned int Lval =0;
unsigned int Rval = 0;
unsigned int distem;
unsigned char rekey = 0;
unsigned char SetFlag = 0;
unsigned char setLval = 50;
unsigned char setRval = 50;
unsigned char setTval = 35;
void Init_Timer0(void);
void main (void)
{
unsigned char midval;
Init_Timer0();
LCD_Init();
DelayMs(20);
LCD_Clear();
led_l = 0;relay = 0;led_b = 0;fan = 0;
DelayMs(200);
led_l = 1;relay = 1;led_b = 1;fan = 1;
sprintf(disdat,"L:%2d R:%2d T:%2d C",Lval,Rval,distem);
LCD_Write_String(0,0,disdat);
sprintf(disset," L:%2d R:%2d T:%2d",(unsigned int)setLval,(unsigned int)setRval,(unsigned int)setTval);
LCD_Write_String(0,1,disset);
while (1)
{
if((key_s == 0)||(key_a == 0 )||(key_u == 0))
{
if(rekey == 0)
{
DelayMs(10);
if(key_s == 0)
{
if(SetFlag == 0)
{
SetFlag =1;
}
else if(SetFlag == 1)
{
SetFlag =2;
}
else if(SetFlag == 2)
{
SetFlag = 3;
}
else if(SetFlag == 3)
{
SetFlag =0;
}
rekey = 1;
}
if(key_a == 0)
{
if(SetFlag == 1)
{
if(setLval <99)
{setLval++;}
}
else if(SetFlag == 2)
{
if(setRval <99)
{setRval++;}
}
else if(SetFlag == 3)
{
if(setTval <99)
{setTval++;}
}
rekey = 1;
}
if(key_u == 0)
{
if(SetFlag == 1)
{
if(setLval >0)
{setLval--;}
}
else if(SetFlag == 2)
{
if(setRval >0)
{setRval--;}
}
else if(SetFlag == 3)
{
if(setTval >0)
{setTval--;}
}
rekey = 1;
}
}
}
else
{rekey = 0;}
if(readADCFlag == 1)
{
midval=ReadADC(1);
Lv=5.15-(float)midval*5.15/255;
Lval = (unsigned int )(Lv * 100 )/5.16;
DelayMs(10);
midval=ReadADC(0);
Tv=5.15-(float)midval*5.15/255;
Rval = (unsigned int )(Tv * 100 )/5.16;
sprintf(disdat,"L:%2d R:%2d T:%2d C",Lval,Rval,distem);
LCD_Write_String(0,0,disdat);
LCD_Write_Char(14,0,0XDF) ;
readADCFlag = 0 ;
sprintf(disset," L:%2d R:%2d T:%2d ",(unsigned int)setLval,(unsigned int)setRval,(unsigned int)setTval);
LCD_Write_String(0,1,disset);
if(SetFlag == 1)
{
LCD_Write_Char(0,1,'S') ;
LCD_Write_Char(5,1,' ') ;
LCD_Write_Char(10,1,' ') ;
}
else if(SetFlag == 2)
{
LCD_Write_Char(0,1,' ') ;
LCD_Write_Char(5,1,'S') ;
LCD_Write_Char(10,1,' ') ;
}
else if(SetFlag == 3)
{
LCD_Write_Char(0,1,' ') ;
LCD_Write_Char(5,1,' ') ;
LCD_Write_Char(10,1,'S') ;
}
else
{
LCD_Write_Char(0,1,' ') ;
LCD_Write_Char(5,1,' ') ;
LCD_Write_Char(10,1,' ') ;
}
if(Lval <= setLval)
{
led_l = 0;
}
else
{
led_l = 1;
}
if(Rval <= setRval)
{
relay = 0;
}
else
{
relay = 1;
}
if(distem <= setTval)
{
led_b = 0;
fan = 1;
}
else
{
led_b = 1;
fan = 0;
}
}
if(readTem==1)
{
temp=ReadTemperature();
temperature=(float)temp*0.0625;
if(temperature >1)
{distem = (unsigned int )temperature;}
readTem=0;
}
}
}
void Init_Timer0(void)
{
TMOD |= 0x01;
TH0=(65536-20000)/256;
TL0=(65536-20000)%256;
EA=1;
ET0=1;
TR0=1;
}
void Timer0_isr(void) interrupt 1
{
TH0=(65536-20000)/256;
TL0=(65536-20000)%256;
time_20ms++;
if(time_20ms % 20 == 0)
{
readADCFlag = 1;
}
if(time_20ms % 40 == 0)
{
readTem = 1;
}
}