C51单片机时钟（八段LED）MCS-51程序

#include <reg52.h> #include <INTRINS.h> unsigned char code table[12]={0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xF6,0x00,0x02}; unsigned char code table_plot[11]={0xFd,0x61,0xDb,0xF3,0x67,0xB7,0xBf,0xE1,0xFf,0xF7,0x01}; unsigned char Time[8],Data[8],k; signed char Time_scan,second,minute,hour,date,month; signed int year; sbit Ch0=P1^1; sbit left=P1^0; sbit right=P1^2; sbit up=P1^4; sbit down=P1^3; sbit int0=P3^2; bit fleft,fright,fup,fdown; void delay(unsigned int i) { while(--i){} ; } void Scan() { unsigned char i; for(i=0;i<8;i++) { if(Ch0==1) { P0=table[Time[i]]; } else { if(i==2||i==4) { P0=table_plot[Data[i]]; } else { P0=table[Data[i]]; } } switch(i) { case 0:P2=0xfe;break; case 1:P2=0xfd;break; case 2:P2=0xfb;break; case 3:P2=0xf7;break; case 4:P2=0xef;break; case 5:P2=0xdf;break; case 6:P2=0xbf;break; case 7:P2=0x7f;break; } delay(200); } } void runtime_0() { second++; if(second==60) {second=0;minute++;} if(minute==60) {minute=0;hour++;} if(hour==24) { hour=0;date++; switch(month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: if(date>=32){date=1;month++;} if(month>=13){month=1;year++;} break; case 4: case 6: case 9: case 11: if(date>=31){date=1;month++;} break; case 2: if(year%4==0&&year%100!=0||year%400==0) { if(date>=30){date=1;month++; break; } } else if (date>=29){date=1;month++;} break; } } if(year>=10000) year=1; } void div() { Time[0]=second%10; Time[1]=second/10; Time[2]=11; Time[3]=minute%10; Time[4]=minute/10; Time[5]=11; Time[6]=hour%10; Time[7]=hour/10; Data[0]=date%10; Data[1]=date/10; Data[2]=month%10; Data[3]=month/10; Data[4]=year%10; Data[5]=year/10%10; Data[6]=year/100%10; Data[7]=year/1000; } void data_add() { date++; switch(month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: if(date>=32) date=1; break; case 4: case 6: case 9: case 11: if(date>=31) date=1; break; case 2: { if(year%4==0&&year%100!=0||year%400==0) { if(date>=30) date=1; } else if (date>=29) date=1; break ; } } } void data_sub() { date--; switch(month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: if(date<=0) date=31; break; case 4: case 6: case 9: case 11: if(date<=0) date=30; break; case 2: { if(year%4==0&&year%100!=0||year%400==0) { if(date<=0) date=29; } else if(date<=0) date=28; break; } } } void Scan_time() { if(Time_scan==0) { P0=table[Time[0]]; P2=0xfe; delay(50); P0=table[Time[1]]; P2=0xfd; delay(50); } else if(Time_scan==1) { P0=table[Time[3]]; P2=0xf7; delay(50); P0=table[Time[4]]; P2=0xef; delay(50); } else if(Time_scan==2) { P0=table[Time[6]]; P2=0xbf; delay(50); P0=table[Time[7]]; P2=0x7f; delay(50); } } void Scan_data() { if(Time_scan==0) { P0=table[Data[0]]; P2=0xfe; delay(50); P0=table[Data[1]]; P2=0xfd; delay(50); } else if(Time_scan==1) { P0=table[Data[2]]; P2=0xfb; delay(50); P0=table[Data[3]]; P2=0xf7; delay(50); } else if(Time_scan==2) { P0=table[Data[4]]; P2=0xef; delay(50); P0=table[Data[5]]; P2=0xdf; delay(50); P0=table[Data[6]]; P2=0xbf; delay(50); P0=table[Data[7]]; P2=0x7f; delay(50); } } void Scan_key() { if(left==0&&fleft==1) { if(++Time_scan>=3) Time_scan=0; } if(right==0&&fright==1) { if(--Time_scan<=-1) Time_scan=2; } if(up==0&&fup==1) { if(Ch0==1) { switch(Time_scan) { case 0: {second++;if(second>=60) {second=0;}break;} case 1: {minute++;if(minute>=60) {minute=0;}break;} case 2: {hour++;if(hour>=24) {hour=0;} break;} } } else { switch(Time_scan) { case 0: {data_add();break;} case 1: {month++;if(month>=13) {month=1;}break;} case 2: {year++;if(year>=10000) {year=0;} break;} } } div(); Scan_time(); } if(down==0&&fdown==1) { if(Ch0==1) { switch(Time_scan) { case 0: {second--;if(second<=-1) {second=59;}break;} case 1: {minute--;if(minute<=-1) {minute=59;}break;} case 2: {hour--;if(hour<=-1) {hour=23;} break;} } } else { switch(Time_scan) { case 0: {data_sub();break; } case 1: {month--;if(month<=0) {month=12;}break;} case 2: {year--;if(year<=-1) {year=9999;}break;} } } div(); Scan_time(); } } void timer0() interrupt 1 using 1 //T0为第1中断，INT0为第0中断 { TH0=0x3c; TL0=0x84; //定时时间 k++; if(k==20) { k=0; runtime_0(); div(); } } void Int0() interrupt 0 using 0 //int0中断，调时间 { while(1) { fleft=left; fright=right; fup=up; fdown=down; if(Ch0==1) Scan_time(); else Scan_data(); Scan_key(); if(int0==1) { break; } } } void main() { TMOD=0x01; TH0=0x3c; TL0=0x84; TR0=1; ET0=1; EX0=1; IT0=1; EA=1; hour=6; minute=30; second=0; year=2007; month=10; date=15; while(1) { Scan(); } }