出租车计价器代码

出租车计价器代码

#include<reg52.h>

#include <intrins.h>

#define uchar unsigned char

#define uint unsigned int

#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();_nop_();}; uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; sbit exter=P3^3; //外部中断

sbit key0=P1^0; //清零

sbit key1=P1^1; //切换/+

sbit key2=P1^2; //-

sbit key3=P1^3; //功能键

sbit SCL=P2^2;

uint inter,aa,bb,temp,temp1,numwei;

uint zongjine,licheng,dengdai;

uint zongjine1,licheng1;

uint key3num,qiehuantemp,delaytemp;

uchar danjia1,danjia2,danjia3,danjia,qibu;

void delay(uint x) //延时时基为1ms

{

int i,j;

for(i=x;i>0;i--)

for(j=340;j>0;j--);

}

void display() //数码管显示

{

//数码管动态显示

switch(numwei)

{

case 0:P3=0xfe;P0=table[zongjine/100];break;

case 1:P3=0xfd;P0=table[zongjine%100/10]+0x80;break;

case 2:P3=0xfb;P0=table[zongjine%100%10];break;

case 3:P3=0xef;P0=table[licheng/10];break;

case 4:P3=0xdf;P0=table[licheng%10];break;

case 5:P3=0xbf;P0=table[danjia/10]+0x80;break;

case 6:P3=0x7f;P0=table[danjia%10];break;

}

if(numwei==7)

numwei=0;

}

void keyscan() //键盘扫描

{

if(key3==0) //功能键调节{

delay(5);

if(key3==0)

{

key3num++;

if(key3num==5) key3num=0;

while(!key3);

delay(5);

while(!key3);

while(key3num)

{

if(key3num==1) //调白天单价{

if(key1==0)

{

delay(5);

if(key1==0)

{

danjia1++;

if(danjia1==100)

danjia1=0;

while(!key1);

delay(5);

while(!key1);

}

}

if(key2==0)

{

delay(5);

if(key2==0)

{

danjia1--;

if(danjia1==-1)

while(!key2);

delay(5);

while(!key2);

}

}

zongjine=100;

licheng=0;

danjia=danjia1;

}

if(key3num==2) //调夜晚单价{

if(key1==0)

{

delay(5);

if(key1==0)

{

danjia2++;

if(danjia2==100)

danjia2=0;

while(!key1);

delay(5);

while(!key1);

}

}

if(key2==0)

{

delay(5);

if(key2==0)

{

danjia2--;

if(danjia2==-1)

danjia2=99;

while(!key2);

delay(5);

while(!k

ey2);

}

}

zongjine=200;

danjia=danjia2;

}

if(key3num==3) //调等待单价{

if(key1==0)

{

delay(5);

if(key1==0)

{

danjia3++;

if(danjia3==100)

danjia3=0;

while(!key1);

delay(5);

while(!key1);

}

}

if(key2==0)

{

delay(5);

if(key2==0)

{

danjia3--;

if(danjia3==-1)

danjia3=99;

while(!key2);

delay(5);

while(!key2);

}

}

zongjine=300;

licheng=0;

danjia=danjia3;

}

if(key3num==4) //调起步价

{

if(key1==0)

{

delay(5);

if(key1==0)

{

if(qibu==

100)

qibu=0;

while(!key1);

delay(5);

while(!key1);

}

}

if(key2==0)

{

delay(5);

if(key2==0)

{

qibu--;

if(qibu==-1)

qibu=99;

while(!key2);

delay(5);

while(!key2);

}

}

zongjine=400;

licheng=0;

danjia=qibu;

}

if(key3num==5) //退出功能键{

key3num=0;

}

if(key3==0)

{

delay(5);

if(key3==0)

{

key3num++;

while(!key3);

delay(5);

while(!key3);

}

}

}

}

}

}

void init()

{

zongjine=0;

licheng=0;

danjia=0;

bb=0; //判断是否等待的时基个数

inter=0;

EA=1; //开总中断

EX1=1; //开外部中断1

IT1=1; //触发方式下降沿

TMOD=0x01;

TH0=(65536-3000)/256;

TL0=(65536-3000)%256;

ET0=1; //开定时

器T0中断

TR0=1; //开定时器T0

P3=0x08;

P0=table[0];

}

void jisuan()

{

if(licheng>3)

zongjine1=qibu+(licheng-3)*danjia+dengdai*danjia3; //金额计算else

zongjine1=qibu+dengdai*danjia3; //起步公里内金额计算}

void qiehuan()

{

if(key1==0) //白天夜晚切换

{

delay(5); //键盘防抖

if(key1==0)

qiehuantemp=!qiehuantemp;

while(!key1);

delay(5);

while(!key1);

}

if(qiehuantemp==0)

danjia=danjia2;

if(qiehuantemp==1)

danjia=danjia1;

}

void main()

{

init();

qiehuantemp=1;

key3num=0;

while(1)

{

if(key3num==0){zongjine=zongjine1,danjia=danjia,EX1=1;}

else EX1=0;

qiehuan(); //切换白天夜晚单价

jisuan(); //计算总金额

keyscan();

if(key0==0) //清零键

init();

}

}

void inter1() interrupt 2 //脉冲中断

{

inter++;

if(inter==50)

{

inter=0;

licheng++;

if(licheng==100) licheng=0;

}

}

void timer0() interrupt 1

{

TH0=(65536-3000)/256;

TL0=(65536-3000)%256;

display();

bb++;

temp1=licheng; //测试是否进入等待

if(bb==10000) //10s无反应进入等待计费{

bb=0;

if(temp&&temp1) dengdai++;

temp=licheng;

}

}