电子钟 原理图 仿真通过 源程序 c

#include <reg52.h> #include "declare.h" sbit k1=P1^3; sbit k2=P1^4; sbit k3=P1^5; char count,daymax,timetemp; void delay(int); void write_clock(unsigned char,unsigned char); void displayalarm(); void refreshtime(); unsigned char read_clock(unsigned char); void write7219one(unsigned char,unsigned char); void calcdaymax() { if(month==1||month==3||month==5||month==7||month==8||month==10||month==12) daymax=31; else if(month==4||month==6||month==9||month==11) daymax=30; else if(month==2) { if((year+2000)%4!=0) daymax=28; else daymax=29; } } void keyscan() { if(k1==0) { delay(50); if(k1==0&&mode==0) { mode++; } if(k1==0&&mode!=0) { count++; timetemp=0; switch(count) { case 1 : timetemp=readyear; P0=0x01; break; case 2 : timetemp=readmonth; P0=0x02; break; case 3 : timetemp=readday; P0=0x04; calcdaymax(); break; case 4 : timetemp=readweek; P0=0x08; break; case 5 : timetemp=readhour; P0=0x10; break; case 6 : timetemp=readminute; P0=0x20; break; case 7 : timetemp=readsecond; P0=0x40; break; case 8 : mode=2; timetemp=alarmhour; P0=0x10; break; case 9 : timetemp=alarmminute; P0=0x20; break; case 10 : count=0; mode=0; P0=0x00; break; } delay(5); } if(k1==1) delay(30); while(k1==0); } if(k2==0) { delay(50); if(k2==0&&mode==0) { displayalarm(); delay(3000); write7219one(0x09,0x0ff); refreshtime(); } if(k2==0&&mode!=0) { switch(count) { case 1 : timetemp++; if(timetemp>=100) timetemp=0; if(timetemp<0) timetemp=99; year=timetemp; writeyear; break; case 2 : timetemp++; if(timetemp>=13) timetemp=1; if(timetemp<1) timetemp=12; month=timetemp; writemonth; break; case 3 : timetemp++; if(timetemp>daymax) timetemp=1; if(timetemp<1) timetemp=daymax; day=timetemp; writeday; break; case 5 : timetemp++; if(timetemp>=24) timetemp=0; if(timetemp<0) timetemp=23; hour=timetemp; writehour; break; case 6 : timetemp++; if(timetemp>=60) timetemp=0; if(timetemp<0) timetemp=59; minute=timetemp; writeminute; break; case 7 : timetemp++; if(timetemp>=60) timetemp=0; if(timetemp<0) timetemp=59; second=timetemp; writesecond; break; case 4 : timetemp++; if(timetemp>=8) timetemp=1; if(timetemp<=0) timetemp=7; week=timetemp; writeweek; break; case 8 : timetemp++; if(timetemp>=24) timetemp=0; if(timetemp<0) timetemp=23; alarmhour=timetemp; break; case 9 : timetemp++; if(timetemp>=60) timetemp=0; if(timetemp<0) timetemp=59; alarmminute=timetemp; break; } if(k2==1) delay(30); while(k2==0); } } if(k3==0) { delay(50); if(k3==0&&mode!=0) { switch(count) { case 1 : timetemp--; if(timetemp>=100) timetemp=0; if(timetemp<0) timetemp=99; year=timetemp; writeyear; break; case 2 : timetemp--; if(timetemp>=13) timetemp=1; if(timetemp<1) timetemp=12; month=timetemp; writemonth; break; case 3 : timetemp--; if(timetemp>daymax) timetemp=1; if(timetemp<1) timetemp=daymax; day=timetemp; writeday; break; case 5 : timetemp--; if(timetemp>=24) timetemp=0; if(timetemp<0) timetemp=23; hour=timetemp; writehour; break; case 6 : timetemp--; if(timetemp>=60) timetemp=0; if(timetemp<0) timetemp=59; minute=timetemp; writeminute; break; case 7 : timetemp--; if(timetemp>=60) timetemp=0; if(timetemp<0) timetemp=59; second=timetemp; writesecond; break; case 4 : timetemp--; if(timetemp>=8) timetemp=1; if(timetemp<=0) timetemp=7; week=timetemp; writeweek; break; case 8 : timetemp--; if(timetemp>=24) timetemp=0; if(timetemp<0) timetemp=23; alarmhour=timetemp; break; case 9 : timetemp--; if(timetemp>=60) timetemp=0; if(timetemp<0) timetemp=59; alarmminute=timetemp; break; } if(k3==1) delay(30); while(k3==0); } } }