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(!key2);}}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1IT1=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T0P3=0x08;P0=table[0];}void jisuan(){if(licheng>3)zongjine1=qibu+(licheng-3)*danjia+dengdai*danjia3; //金额计算elsezongjine1=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;}}。