LCD1206时钟显示.doc

液晶LCD1602时钟显示键盘控制 #include#define uchar unsigned char#define uint unsigned intsbit rs=P20;sbit rw=P21;sbit en=P22;sbit key1=P31;sbit key2=P32;sbit key3=P33;sbit rd=P34;uchar num,count,keynum;char second,minute,hour;uchar code table=2011-06-20 THU;uchar code table1=00:00:00;void delay(uint x)uint i,j;for(i=x;i0;i-)for(j=110;j0;j-);void write_com(uchar com)rs=0;rw=0;en=1;P0=com;delay(5);en=0; void write_date(uchar date)rs=1;rw=0;en=1;P0=date;delay(5);en=0;void init() en=0;write_com(0x38);write_com(0x0c);write_com(0x06);write_com(0x01);write_com(0x80+0x02);for(num=0;num14;num+)write_date(tablenum);delay(5);write_com(0x80+0x44);for(num=0;num8;num+)write_date(table1num);delay(5);TMOD=0x01;EA=1;ET0=1;TR0=1;TH0=(65536-50000)/256;TL0=(65536-50000)%256;void write_shijian(uchar add,uchar date)uchar shi,ge;shi=date/10;ge=date%10;write_com(0x80+0x40+add);write_date(0x30+shi);write_date(0x30+ge);void keyscan()rd=0;if(key1=0)delay(5);if(key1=0)keynum+;while(!key1);if(keynum=1)TR0=0;write_com(0x80+0x40+10);write_com(0x0f); if(keynum=2) write_com(0x80+0x40+7);if(keynum=3) write_com(0x80+0x40+4);if(keynum=4) keynum=0; write_com(0x0c); TR0=1; if(keynum!=0) if(key2=0) delay(5);if(key2=0) while(!key2); if(keynum=1) second+;if(second=60) second=0;write_shijian(10,second);write_com(0x80+0x40+10); if(keynum=2) minute+;if(minute=60)minute=0;write_shijian(7,minute);write_com(0x80+0x40+7); if(keynum=3) hour+;if(hour=24)hour=0;write_shijian(4,hour);write_com(0x80+0x40+4); if(key3=0) delay(5);if(key3=0) while(!key3); if(keynum=1) second-;if(second=-1)second=59;write_shijian(10,second);write_com(0x80+0x40+10); if(keynum=2) minute-;if(minute=-1) minute=59;write_shijian(7,minute);write_com(0x80+0x40+7); if(keynum=3) hour-;if(hour=-1)hour=23;write_shijian(4,hour);write_com(0x80+0x40+4); void timer0() interrupt 1TH0=(65536-50000)/256;TL0=(65536-50000)%256;count+; if(count=20) count=0; second+; if(second=60) second=0; minute+; if(minute=60) minute=0; hour+; if(hour=24) hour=0; write