标题: 烟雾报警器程序 [打印本页]

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作者: 小磊快跑    时间: 2016-10-20 15:59
标题: 烟雾报警器程序

#include<reg52.h>

#include<I2C.H>

#define SET 20

#define PCF8591 0X90

//PCF8591地址

code unsigned char t[]={

0xc0,0xf9,0xa4,0xb0,0x99,0x92,

0x82,0xf8,0x80,0x90,0x88,0x83,

0xc6,0xa1,0x86,0x8e

};

sbit D1=P2^0;

sbit D2=P2^1;

sbit D3=P2^2;

sbit D4=P2^3;

sbit BEEP=P1^7

void delayms(unsigned char);

void display(unsigned char);

void adc(void);

bit ISendByte(unsugned char sla,unsignedchar c);

unsigned char IRcvByte(unsigned char sla);

void warning(void);

unsigned char n;

void main()

{while(1)

  {

  adc();

  display(n);

  warning();

  }

}

bit ISendByte(unsugned char sla,unsignedchar c)

{

Start_I2c();

SendByte(sla);

if(ack == 0) return 0;

SendByte(c);

if(ack == 0) return 0;

Stop_I2c();

return 1;

}

unsigned char IRcvByte(unsigned char sla)

{

unsignedchar c;

Start_I2c();

SendByte(sla+1);

c=RcvByte();

Ack_I2c(1);

Stop_I2c();

return c;

}

void adc(void)

{

ISendByte(PCF8591,0x00|2);

n=IRcvByte(PCF8591);

}

void delayms(unsigned char x){

unsigned char i,j;

for(i = 0;I < x;i++)

{

for(j = 0;j < 123;j++);

}

}

void display(unsigned char x){

unsinged char bai,shi,ge;

bai=x/100;

shi=x%100/10;

ge=x%10;

D3=1;

D1=0;

P0=t[bai];

delayms(5);

P0=0xff;

D1=1;

D2=0;

P0=t[shi];

delayms(5);

P0=0xff;

D1=1;

D3=0;

P0=t[ge];

delayms(5);

P0=0xff;

}

void warning(void){

if(n> SET) BEEP = 1;

elseBEEP = 0;

}

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作者: 十二又十一    时间: 2018-10-27 18:38
那个I2c.h

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