51单片机C语言可调时钟

1、/*这是一个真正有意义的时钟key1功能键 选择可调位，短按，每按一下有一位闪烁 长按闪烁不断向下一位推移key2 加键 短按相应闪烁的位加1，长按连续加1；key3 减键 短按相应闪烁的位减1，长按连续减一；key4 确定键 按下退出调时，正常显示；*/#include<reg52.h>#define uint unsigned int#define uchar unsigned char#define LED P0 #define KEY_1 0x0e #define KEY_2 0x0d#define KEY_3 0x0b#define KEY_4 0x07#define K

2、EY_NULL 0x0f#define KEY_PRESS 0x80 #define KEY_LONG 0x40#define KEY_STATE_INIT 0 #define KEY_STATE_PRESS 1#define KEY_STATE_LONG 2#define KEY_STATE_UP 3#define KEY_LONG_PERIOD 20 #define KEY_CONTINUE_PERIOD 10bit set;bit dao1S=0; bit dao2MS=0;bit dao10MS; sbit dula=P26;sbit wela=P27;sbit key1=P34; s

3、bit key2=P35;sbit key3=P36;sbit key4=P37;int main_flag,exit_flag,up_flag,down_flag; int tab=0,0,0,0,0,0; uchar weitable=0x01,0x02,0x04,0x08,0x10,0x20;uchar tab1=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90;void nint() TMOD=0X01; TH0=0XF8; TL0=0XCC; TR0=1; ET0=1; uchar KeyScan() if(key1=0) retur

4、n KEY_1; if(key2=0) return KEY_2; if(key3=0) return KEY_3; if(key4=0) return KEY_4; return KEY_NULL;uchar GetKey()uchar keyRetu=0,keyTemp=KEY_NULL; static uchar s_keyState=KEY_STATE_INIT,keyTime=0,keyLast=KEY_NULL; keyTemp=KeyScan();switch (s_keyState) case KEY_STATE_INIT: if(keyTemp!=KEY_NULL) s_ke

5、yState=KEY_STATE_PRESS; break; case KEY_STATE_PRESS: if(keyTemp!=KEY_NULL) s_keyState=KEY_STATE_LONG; keyTime=0; keyLast=keyTemp; else s_keyState=KEY_STATE_INIT; break; case KEY_STATE_LONG: if(keyTemp=KEY_NULL) s_keyState=KEY_STATE_INIT; keyRetu=(keyLast|KEY_PRESS); else if(+keyTime>=KEY_LONG_PER

6、IOD) /按下时间>1s s_keyState=KEY_STATE_UP; keyTime=0; break; case KEY_STATE_UP: if(keyTemp=KEY_NULL) s_keyState=KEY_STATE_INIT; else keyTime=0; keyRetu=(keyLast|KEY_LONG); break;return keyRetu;void updatetime() if(dao1S) dao1S=0; if(+tab5=10) tab5=0; if(+tab4=6)tab4=0; if(+tab3=10) tab3=0; if(+tab2=6

7、) tab2=0; if(tab0<2) if(+tab1=10) tab1=0; tab0+; else if(tab1=4) tab1=0; tab0=0; void display() static uchar k=0; dula=1; LED=tab1tabk; if(set&&(k=main_flag-1) LED=0XFF; dula=0; LED=0Xff; wela=1; LED=weitablek; wela=0; if(+k>5)k=0; void sittime(uchar hour,uchar minute,uchar second ) uc

8、har a1,a2,b1,b2,c1,c2; a1=hour/10; a2=hour%10; b1=minute/10; b2=minute%10; c1=second/10; c2=second%10; tab0=a1; tab1=a2; tab2=b1; tab3=b2; tab4=c1; tab5=c2; void main() nint(); EA=1; sittime(15,20,15); while(1) updatetime(); if(dao2MS) dao2MS=0; display(); if(dao10MS) dao10MS=0; switch (GetKey() cas

9、e (KEY_1|KEY_PRESS): if(+main_flag>=7)main_flag=0; break; case (KEY_1|KEY_LONG): if(+main_flag>=7)main_flag=0; break; case (KEY_2|KEY_PRESS): switch(main_flag) case 1: if(+tab0>=3) tab0=0; break; case 2: if(+tab1>4) tab1=0; break; case 3: if(+tab2>5) tab2=0; break; case 4: if(+tab3>

10、;9) tab3=0; break; case 5: if(+tab4>5) tab4=0; break; case 6: if(+tab5>9) tab5=0; break; case (KEY_2|KEY_LONG): switch(main_flag) case 1: if(+tab0>=3) tab0=0; break; case 2: if(+tab1>4) tab1=0; break; case 3: if(+tab2>5) tab2=0; break; case 4: if(+tab3>9) tab3=0; break; case 5: if(

11、+tab4>5) tab4=0; break; case 6: if(+tab5>9) tab5=0; break; case (KEY_3|KEY_PRESS): switch(main_flag) case 1: if(-tab0<0) tab0=2; break; case 2: if(-tab1<0) tab1=4; break; case 3: if(-tab2<0) tab2=5; break; case 4: if(-tab3<0) tab3=9; break; case 5: if(-tab4<0) tab4=5; break; cas

12、e 6: if(-tab5<0) tab5=9; break; case (KEY_3|KEY_LONG): switch(main_flag) case 1: if(-tab0<0) tab0=2; break; case 2: if(-tab1<0) tab1=4; break; case 3: if(-tab2<0) tab2=5; break; case 4: if(-tab3<0) tab3=9; break; case 5: if(-tab4<0) tab4=5; break; case 6: if(-tab5<0) tab5=9; break;case (KEY_4|KEY_PRESS): main_flag=0; disp