单片机液晶显示时间lcd

uchar code disp1[]=\" 2012-12-30\"; uchar code disp2[]=\" 00:00:00\";

uchar aa,shi,fen,miao,ri=1,yue=1,nian=12,KNUM; void delay(uint); void write_com(uchar); void write_data(uchar); void write_str(uchar,uchar *str); void init();

void sfmdisplay(uchar,uchar); void keyscan(); void shanping();

void main() { init(); write_str(0x80,disp1);

write_str(0x80+0x40,disp2); while(1) {

keyscan();//键盘扫描 if(aa==20) {

aa=0;

miao++;

if(miao==60) {

miao=0; fen++; if(fen==60) {

fen=0; shi++; if(shi==24) { shi=0;

} {

ri++;

if(yue==2&&ri==29) { ri=0; yue++; }

if((yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12)&&ri==32)

{ }

}

ri=0;

yue++;

if(yue==13) { }

yue=0; nian++;

}

if((yue==4||yue==6||yue==9||yue==11)&&ri==31) {

ri=0; yue++; if(yue==13) { yue=0; nian++; }

sfmdisplay(0x05,nian);

sfmdisplay(0x08,yue); }

sfmdisplay(0x0b,ri);

}

sfmdisplay(0x40+0x03,shi);

}

sfmdisplay(0x40+0x06,fen);

}

sfmdisplay(0x40+0x09,miao);

void timer0() interrupt 1

TH0=(65535-50000)/256; TL0=(65535-50000)%256; aa++;

}

void delay(uint z) { uint x,y; for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

void write_com(uchar com)//写控制字 {

lcd_rs=0; lcd_en=0; delay(1); lcd_en=1;

lcd_com=com; delay(1); lcd_en=0;

}

void write_data(uchar lcddata)//显示字符 {

lcd_rs=1; lcd_en=0; delay(1); lcd_en=1;

lcd_data=lcddata; delay(1);

lcd_en=0; }

void write_str(uchar addr,uchar *str)//显示字符串 { }

void init() { write_com(0x38); //设置显示模式 write_com(0x08); //关闭显示屏

write_com(0x01); //清楚显示屏

write_com(0x0c); //开启显示屏（无光标）

write_com(0x06); //读写字符时指针自动加1（整屏不移动） write_com(addr); do {

write_data(*str); str++;

}

while(*str!='\\0');

}

TMOD=0x01;

TH0=(65535-50000)/256; TL0=(65535-50000)%256; EA=1; ET0=1; TR0=1;

void sfmdisplay(uchar addr,uchar date) {

write_com(0x80+addr); write_data(date/10+0x30); write_data(date%10+0x30);

}

void keyscan() {

if(KEY==0) {

delay(5); if(KEY==0) {

while(!KEY) ;

KNUM++; switch(KNUM) {

case 1: TR0=0;

write_com(0x80+0X40+0x0a); write_com(0x0f); break;

case 2: write_com(0x80+0x40+0x07); break; case 3:

write_com(0x80+0x40+0x04); break;

write_com(0x80+0x0b); break;

write_com(0x80+0x08);

case 4:

case 5:

break; case 6: write_com(0x80+0x05);

} {

}

}

break;

case 7: write_com(0x0c); TR0=1; KNUM=0;

break;

if(KNUM==1)

if(KUP==0) {

delay(5); if(KUP==0) {

while(!KUP); miao++;

if(miao==60) miao=0; sfmdisplay(0x40+0x09,miao); write_com(0x80+0X40+0x0a);

write_com(0x0f); } }

if(KDOWN==0) { }

delay(5);

if(KDOWN==0) { while(!KDOWN); }

miao--;

if(miao==-1) miao=59; sfmdisplay(0x40+0x09,miao); write_com(0x80+0X40+0x0a); write_com(0x0f);

}

if(KNUM==2) {

if(KUP==0) {

delay(5); if(KUP==0)

} {

{ }

while(!KUP); fen++;

if(fen==60) fen=0;

sfmdisplay(0x40+0x06,fen); write_com(0x80+0X40+0x07); write_com(0x0f);

if(KDOWN==0)

delay(5); if(KDOWN==0) { }

while(!KDOWN); fen--;

if(fen==-1) fen=59;

sfmdisplay(0x40+0x06,fen); write_com(0x80+0X40+0x07); write_com(0x0f);

} }

if(KNUM==3) {

if(KUP==0) {

delay(5); if(KUP==0) { }

while(!KUP); shi++;

if(shi==24) shi=0;

sfmdisplay(0x40+0x03,shi); write_com(0x80+0X40+0x04); write_com(0x0f);

}

if(KDOWN==0) {

delay(5);

if(KDOWN==0) { while(!KDOWN);

shi--;

}

}

if(shi==-1) shi=23;

sfmdisplay(0x40+0x03,shi); write_com(0x80+0X40+0x04); write_com(0x0f);

}

if(KNUM==4) {

if(KUP==0) {

delay(5); if(KUP==0) {

while(!KUP);

ri++; if(yue==2&&ri==29) ri=1;

if((yue==1||yue==3||yue==5||yue==5||yue==8||yue==10||yue==12)&&ri==32)

}

}

ri=1;

if((yue==4||yue==6||yue==9||yue==11)&&ri==31)

ri=1; sfmdisplay(0x0a,ri); write_com(0x80+0x0b); write_com(0x0f);

if(KDOWN==0)

{ delay(5);

if(KDOWN==0) {

while(!KDOWN); ri--;

if(yue==2&&ri==0) ri=28;

if((yue==1||yue==3||yue==5||yue==5||yue==8||yue==10||yue==12)&&ri==00)

ri=31;

if((yue==2||yue==4||yue==6||yue==9||yue==11)&&ri==00) ri=30;

}

}

sfmdisplay(0x0a,ri); write_com(0x80+0x0b); write_com(0x0f);

}

if(KNUM==5) { if(KUP==0) { }

}

delay(5); if(KUP==0) { }

while(!KUP); yue++;

if(yue==13) yue=1; sfmdisplay(0x07,yue); write_com(0x80+0x08); write_com(0x0f);

if(KDOWN==0)

{ delay(5); }

if(KDOWN==0) { }

while(!KDOWN); yue--;

if(yue==0) yue=12; sfmdisplay(0x07,yue); write_com(0x80+0x08); write_com(0x0f);

if(KNUM==6)

{

if(KUP==0) { }

delay(5); if(KUP==0) { }

while(!KUP); nian++;

sfmdisplay(0x04,nian); write_com(0x80+0x05); write_com(0x0f);

}

}

if(KDOWN==0) { }

delay(5);

if(KDOWN==0) { }

while(!KDOWN); nian--;

sfmdisplay(0x04,nian); write_com(0x80+0x05); write_com(0x0f);