出租车计价器法度模范[必威体育精装版]lta2u.doc

出租车计价器程序#includereg52.h#include stdio.h#include absacc.h#define uchar unsigned charsbit P3_4=P3^4;sbit jia=P2^0;//价格加sbit jian=P2^1;//价格减sbit gl=P2^2; //公里sbit hp=P2^3; //换屏sbit j=P2^4;//记数unsigned char keycnt=0;unsigned char cnt=0;bit write=0; //写24C08 的标志；//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; //单价e=00; //公里数f=05;u=12;//时v=00;//分w=00;//秒//jiage=d*e; //金额/////////24C08 读写驱动程序////////////////////sbit scl=P3^4; // 24c08 SCLsbit sda=P3^5; // 24c08 SDAvoid delay1(unsigned char x){ unsigned int i;for(i=0;ix;i++);;}void flash(){ ; ; }void x24c08_init() //24c08 初始化子程序{scl=1; flash(); sda=1; flash();}void start() //启动（I方C）总线{sda=1; flash(); scl=1; flash(); sda=0; flash(); scl=0; flash();}void stop() //停止（I方C）总线{sda=0; flash(); scl=1; flash(); sda=1; flash();}void writex(unsigned char j) //写一个字节{ unsigned char i,temp;temp=j;for (i=0;i8;i++){temp=temp1; scl=0; flash(); sda=CY; flash(); scl=1; flash();}scl=0; flash(); sda=1; flash();}unsigned char readx() //读一个字节{unsigned char i,j,k=0;scl=0; flash(); sda=1;for (i=0;i8;i++){flash(); scl=1; flash();if (sda==1) j=1;else j=0;k=(k1)|j;scl=0;}flash(); return(k);}void clock() //(I方C）线时钟{unsigned char i=0;scl=1; flash();while ((sda==1)(i255))i++;scl=0; flash();}////////从24c02 的地址address 中读取一个字节数据/////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 地址中写入一字节数据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 读写驱动程序完/////////////////////void Delay(unsigne