cj.rar_cj

#include<reg52.h> #define uint unsigned int #define uchar unsigned char sbit p00=P0^0;sbit p01=P0^1;sbit p02=P0^2;sbit p03=P0^3;sbit p04=P0^4;sbit p05=P0^5;sbit p06=P0^6;sbit p07=P0^7; sbit p10=P1^0;sbit p11=P1^1;sbit p12=P1^2;sbit p13=P1^3;sbit p14=P1^4;sbit p15=P1^5;sbit p16=P1^6;sbit p17=P1^7; sbit p20=P2^0;sbit p21=P2^1;sbit p22=P2^2;sbit p23=P2^3;sbit p24=P2^4;sbit p25=P2^5;sbit p26=P2^6;sbit p27=P2^7; sbit sda=P3^0;sbit scl=P3^1;sbit p32=P3^2;sbit p33=P3^3;sbit p34=P3^4;sbit p35=P3^5;sbit p36=P3^6;sbit p37=P3^7; uchar num,temp,num1; uchar a,cf,flag,ra; void ledscan(); void delay() //空操作5us延时 { ;; } void start() //开始信号 { sda=1; delay(); scl=1; delay(); sda=0; delay(); } void stop() //停止 { sda=0; delay(); scl=1; delay(); sda=1; delay(); } void respons() //应答 { uchar i; scl=1; delay(); while((sda==1)&&(i<250))i++; scl=0; delay(); } void init() //初始化 { EA=1; IT0=0; IT1=0; EX0=1; EX1=1; flag=0; sda=1; cf=1; delay(); scl=1; delay(); } void write_byte(uchar date) //写数据 { uchar i,temp; temp=date; for(i=0;i<8;i++) { temp=temp<<1; scl=0; delay(); sda=CY; delay(); scl=1; delay(); // scl=0; // delay(); } scl=0; delay(); sda=1; delay(); } uchar read_byte() //读数据 { uchar i,k; scl=0; delay(); sda=1; delay(); for(i=0;i<8;i++) { scl=1; delay(); k=(k<<1)|sda; scl=0; delay(); } return k; } void delay1(uchar x) //延时程序，防止读写之前的冲突。1ms，，，延时时取100 { uchar a,b; for(a=x;a>0;a--) for(b=100;b>0;b--); } void write_add(uchar address,uchar date) //直接对给定地址写给定数据 { start(); write_byte(0xa0); respons(); write_byte(address); respons(); write_byte(date); respons(); stop(); } uchar read_add(uchar address) //直接读取给定地址上的数据并返回 { uchar date; start(); write_byte(0xa0); respons(); write_byte(address); respons(); start(); write_byte(0xa1); respons(); date=read_byte(); stop(); return date; } uchar keyscan(); void display(uchar aa); void main() { init(); while(1) { keyscan(); ledscan(); } } uchar keyscan() { P2=0xfe; temp=P2; temp=temp&0xf0; while(temp!=0xf0) { delay1(5); temp=P2; temp=temp&0xf0; while(temp!=0xf0) { temp=P2; switch(temp) { case 0xee: { p00=0;write_add(23,0x11);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xde: { p01=0;write_add(23,0x12);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xbe: { p02=0;write_add(23,0x22);delay1(100);p36=0;delay1(100);p36=1; } break; case 0x7e: { p03=0;write_add(23,0x13);delay1(100);p36=0;delay1(100);p36=1; } break; } while(temp!=0xf0) { temp=P2; temp=temp&0xf0; } } } P2=0xfd; temp=P2; temp=temp&0xf0; while(temp!=0xf0) { delay1(5); temp=P2; temp=temp&0xf0; while(temp!=0xf0) { temp=P2; switch(temp) { case 0xed: { p04=0;write_add(23,0x23);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xdd: { p05=0;write_add(23,0x14);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xbd: { p06=0;write_add(23,0x24);delay1(100);p36=0;delay1(100);p36=1; } break; case 0x7d: { p07=0;write_add(23,0x15);delay1(100);p36=0;delay1(100);p36=1; } break; } while(temp!=0xf0) { temp=P2; temp=temp&0xf0; } } } P2=0xfb; temp=P2; temp=temp&0xf0; while(temp!=0xf0) { delay1(5); temp=P2; temp=temp&0xf0; while(temp!=0xf0) { temp=P2; switch(temp) { case 0xeb: { p10=0;write_add(23,0x25);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xdb: { p11=0;write_add(23,0x26);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xbb: { p12=0;write_add(23,0x31);delay1(100);p36=0;delay1(100);p36=1; } break; case 0x7b: { p13=0;write_add(23,0x32);delay1(100);p36=0;delay1(100);p36=1; } break; } while(temp!=0xf0) { temp=P2; temp=temp&0xf0; } } } P2=0xf7; temp=P2; temp=temp&0xf0; while(temp!=0xf0) { delay1(5); temp=P2; temp=temp&0xf0; while(temp!=0xf0) { temp=P2; switch(temp) { case 0xe7: { p14=0;write_add(23,0x33);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xd7: { p15=0;write_add(23,0x34);delay1(100);p36=0;delay1(100);p36=1; } break; case 0xb7: { p16=0;write_add(23,0x35);delay1(100);p36=0;delay1(100);p36=1; } break; case 0x77: { p17=0;write_add(23,0x36);delay1(100);p36=0;delay1(100);p36=1; } break; } while(temp!=0xf0) { temp=P2; temp=temp&0xf0; } } } return num; } void ledscan ()//扫描熄灯 { switch (cf) { case 1: {p12=1;p00=1;}break; case 2: p13=1;break; case 3: p14=1;break; case 4: p15=1;break; case 5: p16=1;break; case 6: {p17=1;p11=1;}break; } if (flag==1) { switch (cf) { case 2: p01=1;break; case 3: p03=1;break; case 4: p05=1;break; case 5: p07=1;break; } } if (flag==2) { switch (cf) { case 2: p02=1;break; case 3: p04=1;break; case 4: p06=1;break; case 5: p10=1;break; } } } void currentfloor() interrupt 0 { delay1(100); ra=read_add(22); cf=(ra&0x0f); switch(ra&0xf0) { case 0x10:flag=1;break; case 0x20:flag=2;break; case 0x00:flag=0;break; } while(INT0==0); }