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#include<reg52.h>
#include <stdio.h>
#include <absacc.h>
#define uchar unsigned char
sbit P3_4=P3^4;
sbit jia=P2^0;//價格加
sbit jian=P2^1;//價格減
sbit gl=P2^2; //公里
sbit hp=P2^3; //換屏
sbit j=P2^4;//記數(shù)
unsigned char keycnt=0;
unsigned char cnt=0;
bit write=0; //寫24C08 的標(biāo)志；
//code uchar tab[10]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,};
//code uchar tab[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,};
code uchar tab[10]={0xbf,0x06,0xdb,0xcf,0x66,0xed,0xfd,0x87,0xff,0xef,};
uchar sz[6];
int yw,ww,qw,bw,sw,gw,a,b,c,d,e,f,g,u,v,w,z;
d=46; //單價
e=00; //公里數(shù)
f=05;
u=12;//時
v=00;//分
w=00;//秒
//jiage=d*e; //金額
/////////24C08 讀寫驅(qū)動程序////////////////////
sbit scl=P3^4; // 24c08 SCL
sbit sda=P3^5; // 24c08 SDA
void delay1(unsigned char x)
{ unsigned int i;
for(i=0;i<x;i++);
;}
void flash()
{ ; ; }
void x24c08_init() //24c08 初始化子程序
{scl=1; flash(); sda=1; flash();}
void start() //啟動（I方C）總線
{sda=1; flash(); scl=1; flash(); sda=0; flash(); scl=0; flash();}
void stop() //停止（I方C）總線
{sda=0; flash(); scl=1; flash(); sda=1; flash();}
void writex(unsigned char j) //寫一個字節(jié)
{ unsigned char i,temp;
temp=j;
for (i=0;i<8;i++)
{temp=temp<<1; scl=0; flash(); sda=CY; flash(); scl=1; flash();}
scl=0; flash(); sda=1; flash();
}
unsigned char readx() //讀一個字節(jié)
{
unsigned char i,j,k=0;
scl=0; flash(); sda=1;
for (i=0;i<8;i++)
{
flash(); scl=1; flash();
if (sda==1) j=1;
else j=0;
k=(k<<1)|j;
scl=0;}
flash(); return(k);
}
void clock() //(I方C）線時鐘
{
unsigned char i=0;
scl=1; flash();
while ((sda==1)&&(i<255))i++;
scl=0; flash();
}
////////從24c02 的地址address 中讀取一個字節(jié)數(shù)據(jù)/////
unsigned char x24c08_read(unsigned char address)
{
unsigned char i;
start(); writex(0xa0);
clock(); writex(address);
clock(); start();
writex(0xa1); clock();
i=readx(); stop();
delay1(10);
return(i);
}
//////向24c02 的address 地址中寫入一字節(jié)數(shù)據(jù)info/////
void x24c08_write(unsigned char address,unsigned char info)
{
EA=0;
start(); writex(0xa0);
clock(); writex(address);
clock(); writex(info);
clock(); stop();
EA=1;
delay1(50);
}
/////////////24C08 讀寫驅(qū)動程序完/////////////////////
void Delay(unsigned int tc) //延時程序
{
while( tc != 0 )
{unsigned int i;
for(i=0; i<100; i++);
tc--;}
}
/////////////////////////////////////////////////////////////////////////////
void jishuqi()
{
if(j==0)
{
cnt++;
switch(cnt)
{
case 30:
e++;
cnt=0;
break;
while(hp==0);
}
}
}
void disp(void)
{
for(c=5;c>=0;c--)
{
SBUF=tab[sz[c]];
while(!TI);
TI=0;
}
}
/*void KEY() //按鍵掃描程序
{
unsigned char i,j;
if(jian==0)
{
for(i=20;i>0;i--) //延時去干擾
for(j=248;j>0;j--);
if(hp==0)
{
keycnt++;
switch(keycnt) //按下次數(shù)判斷
{
case 1: //第一次按下
d=46;
break;
case 2: //第二次按下
d=12;
break;
case 3: //第三次按下
d=78;
keycnt=0; //重新開始判斷鍵值
break;
}
while(hp==0);
}
}
}*/
void shizhong(void)
{
z=TH0*256+TL0;
if(z>1)
{
w++;z=0;
}
if(w>59)
{
v++;w=0;
}
if(v>59)
{
u++;v=0;
}
if(u>23)
{
u=0;
}
}
void led(void) //顯示時間
{
if(jian==0)
{
u++;
}
if(gl==0)
{
v++;
}
if(hp==0)
{
w++;
}
qw=sz[0]=u/10%10;
bw=sz[1]=u%10;
sw=sz[2]=v/10%10;
gw=sz[3]=v%10;
yw=sz[4]=w/10%10;
ww=sz[5]=w%10;
}
void led1(void) //顯示價格里程金額
{
//KEY();
if(jian==0)
{
d=46;
}
if(gl==0)
{
d=78;
}
if(hp==0)
{
e=00;
f=05;
}
qw=sz[0]=d/10%10;
bw=sz[1]=d%10;
sw=sz[2]=e/10%10;
gw=sz[3]=e%10;
yw=sz[4]=f/10%10;
ww=sz[5]=f%10;
jishuqi();
x24c08_write(2,e);
}
void scjs(void)interrupt 3
{
TH1=0X3C;
TL1=0xB0;
a=a+1;
if(a==12)
{
a=0;
P3_4=!P3_4;
if(P3_4==0)
{
//b=TH0*256+TL0;
//f=5;
/*
if(jia==0)
{d++;}
if(jian==0)
{d--;}
if(gl==0)
{e++;}
*/
if(e>3)
{
g=(e-3)*d/10+5;
f=g;
}
shizhong();
if(jia==0)
……………………
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