#include

code senen_seg[10]={0x81,0xe7,0x92,0xa2,0xe4,0xa8,0x88,0xe3,0x80,0xa0}; //P1.7(冒號)口高電平

bit key1_enter=0,key2_enter=0,key3_enter=0,countdown_mark=0,stopwatch_mark=0,count_mark=0,bell_mark=0; //狀態標誌
unsigned char program=0,program_variable=0,count_bit=0,count=0;
unsigned char hour=10,minute=10,second=0; //時間變量
unsigned char delayed_hour=22,delayed_minute=10,delayed_second=0; //定時變量
unsigned char count_hour=0,count_minute=0,count_second=0; //計時計數變量
unsigned int count_time=0,count_count=0;

void delay(unsigned int t) //延時子程序
{
unsigned int i,j;
for(i=0;ifor(j=0;j<10;j++)
;
}

void time0_init(void){ //定時計數0器初始化
EA=0;
TR0=0;
TMOD=0x02;
TH0=0x4;
TL0=0x4;
ET0=1;
TR0=1;
EA=1;
}

static void timer0_isr(void) interrupt TF0_VECTOR using 1 //定時計數0器中斷函數
{
count_time++; //時鐘計時程序
if(count_time>=4020){
count_time=0;
second++;
if(second>=60){
second=0;
minute++;
if(minute>=60){
minute=0;
hour++;
if(hour>=24)hour=0;
}
}
}
if(delayed_hour==hour && delayed_minute==minute && second<4) P3_7=0;
else P3_7=1;
if(countdown_mark==1){ //倒計時程序
count_count++;
if(count_count>=4000 && (count_second!=0|count_minute!=0|count_hour!=0)){
count_count=0;
count_second--;
if(count_second>=60){
count_second=59;
count_minute--;
if(count_minute>=60){
count_minute=59;
count_hour--;
if(count_hour>=100) count_hour=99;
}
}
}
if(count_second==0&&count_minute==0&&count_hour==0&&count_count<=12000) P3_7=0;
else P3_7=1;
if(count_count>=15000) count_count=14000;
}
if(stopwatch_mark==1){ //秒錶程序
count_count++;
if(count_count>=40){
count_count=0;
count_second++;
if(count_second>=100){
count_second=0;
count_minute++;
if(count_minute>=60){
count_minute=0;
count_hour++;
if(count_hour>=60) count_hour=0;
}
}
}
}
}

unsigned char show_key (void){
unsigned char x=0,y=0;
switch (program){
case 0: P1&=senen_seg[second%10]; //時鐘秒的個位
break;
case 1: if(count_time>=2000) P1&=senen_seg[second%10]; //校正秒的個位
break;
case 2: if(delayed_hour==24) P1=0xfe; //鬧鐘秒的個位
else P1&=senen_seg[delayed_second%10];
break;
case 3: if(count_bit>=0) P1&=senen_seg[count_second%10];//倒計時秒的個位
else P1=0xff;
break;
case 4: P1&=senen_seg[count_second%10]; //秒錶秒的個位
break;
case 5: P1&=senen_seg[count_second%10]; //計數器個位
break;
}
P3_3=0;
delay(10);
if(P3_5==0){ //功能鍵1識別
key1_enter=1;
if(count<=254)count++;
}
if(P3_4==0) key2_enter=1; //功能鍵2識別
if(P3_2==0) key3_enter=1; //功能鍵3識別
P3_3=1;
P1|=0xff;

switch (program){
case 0: P1&=senen_seg[second/10]; //時鐘秒的十位
break;
case 1: if(count_time>=2000) P1&=senen_seg[second/10]; //校正秒的十位
break;
case 2: if(delayed_hour==24) P1=0xfe; //鬧鐘秒的十位
else P1&=senen_seg[delayed_second/10];
break;
case 3: if(count_bit>=1) P1&=senen_seg[count_second/10];//倒計時秒的十位
else P1=0xff;
break;
case 4: P1&=senen_seg[count_second/10]; //秒錶秒的十位
break;
case 5: P1&=senen_seg[count_second/10]; //計數器十位
break;
}
P3_1=0;
delay(10);
P3_1=1;
P1|=0xff;

switch (program){
case 0: P1&=senen_seg[minute%10]; //時鐘分的個位
break;
case 1: if(count_time>=2000) P1&=senen_seg[minute%10]; //校正分的個位
break;
case 2: if(delayed_hour==24) P1=0xfe; //鬧鐘分的個位
else P1&=senen_seg[delayed_minute%10];
break;
case 3: if(count_bit>=2) P1&=senen_seg[count_minute%10];//倒計時分的個位
else P1=0xff;
break;
case 4: P1&=senen_seg[count_minute%10]; //秒錶分的個位
break;
case 5: P1&=senen_seg[count_minute%10]; //計數器百位
break;
}
P3_2=0;
delay(10);
P3_2=1;
P1|=0xff;

switch (program){
case 0: P1&=senen_seg[minute/10]; //時鐘秒的個位
break;
case 1: if(count_time>=2000) P1&=senen_seg[minute/10]; //校正秒的個位
break;
case 2: if(delayed_hour==24) P1=0xfe; //鬧鐘秒的個位
else P1&=senen_seg[delayed_minute/10];
break;
case 3: if(count_bit>=3) P1&=senen_seg[count_minute/10];//倒計時秒的個位
else P1=0xff;
break;
case 4: P1&=senen_seg[count_minute/10]; //秒錶秒的個位
break;
case 5: P1&=senen_seg[count_minute/10]; //計數器千位
break;
}
P3_5=0;
delay(10);
P3_5=1;
P1|=0xff;

switch (program){
case 0: P1&=senen_seg[hour%10]; //時鐘時的個位
break;
case 1: if(count_time>=2000) P1&=senen_seg[hour%10]; //校正時的個位
break;
case 2: if(delayed_hour==24) P1=0xfe; //鬧鐘時的個位
else P1&=senen_seg[delayed_hour%10];
break;
case 3: if(count_bit>=4) P1&=senen_seg[count_hour%10];//倒計時時的個位
else P1=0xff;
break;
case 4: P1&=senen_seg[count_hour%10]; //秒錶時的個位
break;
case 5: P1&=senen_seg[count_hour%10]; //計數器萬位
break;
}
P3_0=0;
delay(10);
if(P3_4==1 && key2_enter==1){
x=3; //確認功能鍵2識別，返回3
key2_enter=0;
}
P3_0=1;
P1|=0xff;

switch (program){
case 0: P1&=senen_seg[hour/10]; //時鐘時的個位
break;
case 1: if(count_time>=2000) P1&=senen_seg[hour/10]; //校正時的個位
break;
case 2: if(delayed_hour==24) P1=0xfe; //鬧鐘時的個位
else P1&=senen_seg[delayed_hour/10];
break;
case 3: if(count_bit>=5)P1&=senen_seg[count_hour/10]; //倒計時時的個位
else P1=0xff;
break;
case 4: P1&=senen_seg[count_hour/10]; //秒錶時的個位
break;
case 5: P1&=senen_seg[count_hour/10]; //計數器萬位
break;
}
P3_4=0;
delay(10);
if(P3_5==1 && key1_enter==1){ //確認功能鍵1識別，執行退出或進入下一個功能
if(count>=127) x=1; //確認功能鍵1為長按，返回1
else x=2; //確認功能鍵1為短按，返回2
key1_enter=0;
count=0;
}
if(P3_2==1 && key3_enter==1){
x=4; //確認功能鍵3識別，返回4
key3_enter=0;
}
P3_4=1;
P1|=0xff;
if(program<=1 && count_time>=2000) P1&=0xff; //校時和顯示功能時鐘時冒號閃爍
if(program<=1 && count_time<=2000) P1&=0x7f;
if(program==2) P1&=0x7f; //設置鬧鐘功能時冒號長亮
if(program==3) P1&=0xff; //設置倒計時功能時冒號長滅
if(program==4) P1&=0x7f; //設置秒錶功能時冒號長亮
if(program==5) P1&=0xff; //設置計數時冒號長滅
y=x;
x=0;
return y;
}

void main(){ //主程序
P1=0xff;
P3=0xff;
time0_init();
while(1){
switch(program){
case 0: while(program==0){ //時鐘菜單
switch(show_key()){
case 0: break;
case 1: program=0;
break;
case 2: program=1;
break;
}
}
break; //校時菜單
case 1: while(program==1){
switch(show_key()){
case 0: break;
case 1: program=0;
break;
case 2: program=2;
break;
case 3: hour++;
if(hour>=24)hour=0;
break;
case 4: minute++;
if(minute>=60)minute=0;
break;
}
}
break;
case 2: while(program==2){ //鬧鐘菜單
switch(show_key()){
case 0: break;
case 1: program=0;
break;
case 2: program=3;
break;
case 3: delayed_hour++;
if(delayed_hour>=25)delayed_hour=0;
break;
case 4: delayed_minute++;
if(delayed_minute>=60)delayed_minute=0;
break;
}
}
break;
case 3: while(program==3){ //倒計時菜單
switch(show_key()){
case 0: break;
case 1: program=0;
break;
case 2: program=4;
break;
case 3: count_bit++;
if(count_bit>=7)count_bit=0;
break;
case 4: switch(count_bit){
case 0: count_second+=1;
break;
case 1: count_second+=10;
break;
case 2: count_minute+=1;
break;
case 3: count_minute+=10;
break;
case 4: count_hour+=1;
break;
case 5: count_hour+=10;
break;
case 6: break;
}
if(count_hour>=100) count_hour-=100;
if(count_minute>=60) count_minute-=60;
if(count_second>=60) count_second-=60;
break;
}
if(count_bit==6) countdown_mark=1;
else countdown_mark=0;
}
break;
case 4: count_hour=0; //秒錶菜單
count_minute=0;
count_second=0;
while(program==4){
switch(show_key()){
case 0: break;
case 1: program=0;
break;
case 2: program=5;
break;
case 3: stopwatch_mark=~stopwatch_mark;
break;
case 4: if(stopwatch_mark==0){
count_hour=0;
count_minute=0;
count_second=0;
}
break;
}
}
break; //計數器菜單
case 5: count_hour=0;
count_minute=0;
count_second=0;
while(program==5){
switch(show_key()){
case 0: break;
case 1: program=0;
break;
case 2: program=0;
break;
case 3: count_second++;
if(count_second>=100){
count_second=0;
count_minute++;
if(count_minute>=100){
count_minute=0;
count_hour++;
if(count_hour>=100)count_hour=0;
}
}
break;
case 4: count_hour=0;
count_minute=0;
count_second=0;
break;
}
if(P3_7==0){
while(P3_7==0) show_key();
count_second++;
if(count_second>=100){
count_second=0;
count_minute++;
if(count_minute>=100){
count_minute=0;