gai.zip_南航科院_打铃

#include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit duan=P2^0; sbit wei=P2^1; uchar xdata *posport=0xff20; uchar xdata *dataport=0xff21; uchar xdata *jianport=0xff22; uchar xdata *conport=0xff23; unsigned long int i; uchar j,aa=0,bb=0,cc=0,dd=0,ee=0,ff=0; void display(uchar liu,uchar wu,uchar si,uchar san,uchar er,uchar yi); unsigned char code tab[10]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; unsigned char code lab[6]={0x20,0x10,0x08,0x04,0x02,0x01}; void init8255(void) { *conport=0x81; } void Diss8255(void) { for(j=0;j<6;j++) { if(aa==10) { aa=0; bb++; if(bb==6) { bb=0; cc++; if(cc==10) { cc=0; dd++; if(dd==6) { dd=0; ee++; if(ee==10) { ee=0; ff++; if(ff==2&&ee==4) {aa=0,bb=0,cc=0, dd=0,ee=0,ff=0; } } } } } } } } void init(void) { TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } void display(uchar liu,uchar wu,uchar si,uchar san,uchar er,uchar yi) { *dataport=tab[yi]; *posport=lab[0]; *dataport=tab[er]; *posport=lab[1]; *dataport=tab[san]; *posport=lab[2]; *dataport=tab[si]; *posport=lab[3]; *dataport=tab[wu]; *posport=lab[4]; *dataport=tab[liu]; *posport=lab[5]; } void main(void) { init(); i=0; init8255(); if(i==20) { i=0; while(1) { Diss8255(); display(ff,ee,dd,cc,bb,aa); aa++; } } }void timer0() interrupt 1 using 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; i++; }