光强检测仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）
单片机光强检测源程序如下:
#include <reg52.h>
#include <display.h>
#define uint unsigned int
#define uchar unsigned char
#define Data_ADC0809 P1
sbit LED_light= P2^1;
sbit baojing= P2^5;
sbit DQ = P2^0;
sbit fs=P3^4;
sbit ST=P3^3;
sbit EOC=P3^6;
sbit OE=P3^2;
sbit Key1=P2^6;
sbit Key2=P2^7;
sbit Key3=P3^7;
signed char w;
uint c;
bit bdata flag=0;
uchar temp;
uchar yushe_wendu=50;
uchar yushe_light=100;
uchar Mode=0;
extern uchar ADC0809();
extern void Key();
void delay(uint z)
{
uint i,j;
for(i=0;i<z;i++)
for(j=0;j<121;j++);
}
uchar ADC0809()
{
uchar temp_=0x00;
OE=0;
ST=0;
ST=1;
ST=0;
while(EOC==0)
OE=1;
temp_=Data_ADC0809;
OE=0;
return temp_;
}
void Key()
{
if(Key1==0)
{
while(Key1==0);
if(Mode>=2) Mode=0;
else
{
write_com(0x38)；
write_com(0x0d)；
write_com(0x06)
Mode++;
switch(Mode)
{
case 1:
{
write_com(0x80+12)
break;
}
case 2:
{
write_com(0x38)；
write_com(0x0c)；
Mode=0;
break;
}
}
}
}
if(Key2==0&&Mode!=0)
{
while(Key2==0);
switch(Mode)
{
case 1:
{
yushe_light++;
if(yushe_light>=255)
yushe_light=255;
write_com(0x80+13);
write_data(0x30+yushe_light/100);
write_data(0x30+yushe_light%100/10);
write_data(0x30+yushe_light%10);
break;
}
}
}
if(Key3==0&&Mode!=0)
{
while(Key3==0);
switch(Mode)
{
case 1:
{
yushe_light--;
if(yushe_light<=0)
yushe_light=0;
write_com(0x80+13);
write_data(0x30+yushe_light/100);
write_data(0x30+yushe_light%100/10);
write_data(0x30+yushe_light%10);
break;
}
}
}
delay(200);
write_com(0x38)；
write_com(0x0c)；
}
void main()
{
Init1602();
fs=0;
while(1)
{
temp=ADC0809();
Key();
if(Mode==0)
{
Display_1602(yushe_wendu,yushe_light,c,temp);
if(temp>=yushe_light)
{
LED_light=0;
baojing=0;
fs=1;
}
else
{
LED_light=1;
}
if(temp<yushe_light)
{
baojing=1;
fs=0;
}
}
}
}
全部资料51hei下载地址：
光照强度检测程序5.20.2.rar
(27.87 KB, 下载次数: 29)
光照强度检测proteus仿真.rar
(98.23 KB, 下载次数: 34)
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