通过风力风速传感器，pm2.5传感器等检测空气质量

#include<reg52.h>

#include<intrins.h>

#include<function.h>

#define uint unsigned int

#define uchar unsigned char

typedef unsigned char byte;

typedef unsigned char bool;

//uchar code dis1[]={"123456789"} ;

uchar code dis2[]={"ppm"};

sfr AUXR1=0XA2;//不知道是什么

sfr ADC_CONTR=0XBC;//adc控制寄存器,不可位寻址,用或运算来设置

sfr ADC_RES=0XBD; //转换结果寄存器,高八位

sfr ADC_RES1=0XBE;//转换结果寄存器,低两位

sfr P1ASF=0X9D;//设置p1的那一口为输入口，不可位寻址．

#define ADC_POWER 0X80 //adc电源,第７位

#define ADC_FLAG 0X10 //转换结束标志位，第４位

#define ADC_START 0X08 //转换开始，第３位

#defineADC_SPEEDLL 0X00 //速度位，第５，６位 540

#define ADC_ SPEEDL 0X20 //360

#define ADC_SPEEDH 0X40//180

#define ADC_SPEEDHH 0X60 //90

uint i,j,display=6,t02s;

double c,cdisplay10,ppmd,ppmdou;

int cdisplay,low2;

int wendufazhi=50;

int count ,tt=30;

uint ppm;

uint getADCresult(int n);

void ADC_init()

{

P1ASF=0XFF;//P1口全部作为模拟功能AD使用

ADC_RES=0;//清零转换结果寄存器高8位

ADC_RES1=0; //清零转换结果寄存器低2位

ADC_CONTR=ADC_POWER|ADC_SPEEDLL;//开启AD电源

delay1(2);

}

void ADC0()

{

int i=0,shiwen=0;

for(i=0;i<100;i++)

{

shiwen=getADCresult(0);

c=(double)(shiwen*(5.00/1024))*1000;

cdisplay10+=c;

}

ppmd=cdisplay10/100;

cdisplay10=0;

if(cdisplay>1072)

ppm=400;

if((1049<cdisplay)&&(cdisplay<=1072))

{

ppmdou=(500-((cdisplay-1049)*(100/(1072-1049))));

ppm=(int)ppmdou;

}

if((1036<cdisplay)&&(cdisplay<=1049))

{

ppmdou=(600-((cdisplay-1036)*(100/(1049-1036))));

ppm=(int)ppmdou;

}

if((1023<cdisplay)&&(cdisplay<=1036))

{

ppmdou=(700-((cdisplay-1023)*(100/(1036-1023))));

ppm=(int)ppmdou;

}

if((1016<cdisplay)&&(cdisplay<=1023))

{

ppmdou=(800-((cdisplay-1016)*(100/(1023-1016))));

ppm=(int)ppmdou;

}

if((1006<cdisplay)&&(cdisplay<=1016))

{

ppmdou=(900-((cdisplay-1006)*(100/(1016-1006))));

ppm=(int)ppmdou;

}

if((1000<cdisplay)&&(cdisplay<=1006))

{

ppmdou=(1000-((cdisplay-1000)*(100/(1006-1000))));

ppm=(int)ppmdou;

}

if((966<cdisplay)&&(cdisplay<=1000))

{

ppmdou=(2000-((cdisplay-966)*(100/(1000-966))));

ppm=(int)ppmdou;

}

if((947<cdisplay)&&(cdisplay<=966))

{

ppmdou=(3000-((cdisplay-947)*(100/(966-947))));

ppm=(int)ppmdou;

}

if((924<cdisplay)&&(cdisplay<=947))

{

ppmdou=(4000-((cdisplay-924)*(100/(947-924))));

ppm=(int)ppmdou;

}

if((907<cdisplay)&&(cdisplay<=924))

{

ppmdou=(6000-((cdisplay-907)*(100/(924-907))));

ppm=(int)ppmdou;

}

if(ppm==400)

{

lcd_pos(1,5);

lcd_data('<');

}

if(ppm==10000)

{

lcd_pos(1,5);

lcd_data('>');

}

lcd_pos(1,1);

for(i=0;i<=8;i++)

{

lcd_data(tab2[i]);

delay2(10);

}

lcd_pos(1,6);

lcd_data(ppm/10000);

lcd_data((ppm%10000)/1000);

lcd_pos(1,7);

lcd_data((ppm%1000)/100);

lcd_data((ppm%100)/10);

lcd_pos(1,8);

lcd_data(ppm%10);

lcd_pos(1,9);

for(i=0;i<=2;i++)

{

lcd_data(dis2[i]);

}

delay1(10);

}

//void flash();

uint getADCresult(int n)

{

ADC_CONTR=ADC_POWER|ADC_SPEEDLL|n|ADC_START;

_nop_();

_nop_();

_nop_();

_nop_();

while(!(ADC_CONTR&ADC_FLAG));//等待转换结束

delay1(2);

ADC_CONTR&=~ADC_FLAG;//关闭adc

return(ADC_RES*4+ADC_RES1) ;

}