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#include

#include

#include

#define uchar unsigned char

#define uint unsigned int

#define ADC0809 XBYTE[0x0B000] //P2.6选通

float sum=0,fjg;

uint i,j,*q,*p,sd=5;

sbit p1_0=P1^0;

void wait(uint n);

void main(void)

{ j=0;

TMOD=0X01;//设置定时器0

TH0=0XFC;//定时时间设为1ms

TL0=0X18;

EA=0;//先关中断

EA=1;//开总中断

ET0=1;

//TR0=1;

for(; ;)

{

if(j=20){

do{}while(!TF0);

q=0x30;

for(i=0;i20;i++) //转化后的数值求均方根

{sum=sum+(*q)*(*q);

q++;

}

sum=sum/20;

fjg=sqrt(sum);

if(fjg>sd) //判断是否跳闸

p1_0=1;

j=0;

}}

}

void power(void)

{ uchar x;

for(;;)

{ADC0809=0x01;

wait(1000);

x=ADC0809;

P2=x;

}

}

void wait(uint n)

{ uint i,j;

for(i=0;i

for(j=0;j100;j++);

}

timer0()interrupt 1 using 1

{*p=ADC0809;

p++;

TH0=0XFC;

TL0=0X18;

TR0=1;

j++;

}