51单片机C语言可调时钟(2).doc

/*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#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 key_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; sbit 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) return 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_keystate=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_period) /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 if(+keytime=key_continue_period) /按下时间0.5s 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) tab2=0; if(tab05)k=0; void sittime(uchar hour,uchar minute,uchar second ) uchar 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() case (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(+tab14) tab1=0; break; case 3: if(+tab25) tab2=0; break; case 4: if(+tab39) tab3=0; break; case 5: if(+tab45) tab4=0; break; case 6: if(+tab59) tab5=0; break; case (key_2|key_long): switch(main_flag) case 1: if(+tab0=3) tab0=0; break; case 2: if(+tab14) tab1=0; break; case 3: if(+tab25) tab2=0; break; case 4: if(+tab39) tab3=0; break; case 5: if(+tab45) tab4=0; break; case 6: if(+tab59) tab5=0; break; case (key_3|key_press): switch(main_flag) case 1: if(-tab00) tab0=2; break; case 2: if(-tab10) tab1=4; break; case 3: if(-tab20) tab2=5; break; case 4: if(-tab30) tab3=9; break; case 5: if(-tab40) tab4=5; break; case 6: if(-tab50) tab5=9; break; case (key_3|key_long): switch(main_flag) case 1: if(-tab00) tab0=2; break; case 2: if(-tab10) tab1=4; break; case 3: if(-tab20) tab2=5; break; case 4: if(-tab30) tab3=9; break; case 5: if(-tab40) tab4=5; break; case 6: if(-tab50) tab5=9; break;case (key_4|key_press): main_flag=0; display(); void tim