请问一下大神们 我用1602写了一个时钟 都正常运行了 后来想加一个一开始从右向左移动的滚动进入的程序 结果滚动显示后时钟就运行不起来了怎么回事啊……求解
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit lcdrs=P1^0;
sbit lcdrw=P1^1;
sbit lcden=P2^5;
sbit dula=P2^6;
sbit wela=P2^7;
sbit K1=P3^4;
sbit K2=P3^5;
sbit K3=P3^6;
uchar code table[]=" now is";
uchar code table1[]=" 00:00:00" ;
uchar aa,shi,fen,miao,shiw,gew;
void write_sfm(uchar wei,uchar shu);
void delay(uint z)
{
uint x;
uchar y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_con(uchar com)
{
lcdrw=0;
lcdrs=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_data(uchar dat)
{
lcdrw=0;
lcdrs=1;
P0=dat;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void keyscan()
{
uchar key;
if(K1==0)
{
delay(50);
if(K1==0)
{
while(!K1);
key++;
if(key==1)
{
TR0=0;
write_con(0x0f);
write_con(0x80+0x40+10) ;
}
if(key==2)
{
write_con(0x80+0x40+7);
}
if(key==3)
{
write_con(0x80+0x40+4);
}
if(key==4)
{
key=0;
write_con(0x0c);
TR0=1;
}
}
}
if(key!=0)
{
if(K2==0)
{
delay(50);
if(K2==0)
{
while(!K2);
if(key==1)
{
miao++;
if(miao==60) miao=0;
write_sfm(9,miao);
write_con(0x80+0x40+10);
}
if(key==2)
{
fen++;
if(fen==60) fen=0;
write_sfm(6,fen);
write_con(0x80+0x40+7);
}
if(key==3)
{
shi++;
if(shi==24) shi=0;
write_sfm(3,shi);
write_con(0x80+0x40+4);
}
}
}
if(K3==0)
{
delay(50);
if(K3==0)
{
while(!K3);
if(key==1)
{
miao--;
if(miao==-1) miao=0;
write_sfm(9,miao);
write_con(0x80+0x40+10);
}
if(key==2)
{
fen--;
if(fen==-1) fen=0;
write_sfm(6,fen);
write_con(0x80+0x40+7);
}
if(key==3)
{
shi--;
if(shi==-1) shi=0;
write_sfm(3,shi);
write_con(0x80+0x40+4);
}
}
}
}
}
void init()
{ uchar i;
dula=0;
wela=0;
write_con(0x38); //4位总线 双行显示 5*7点阵
write_con(0x0f); //显示开 无光标 无闪烁
write_con(0x06); // 光标右移 字符不移动
write_con(0x01); //清屏
write_con(0x80+17); //将数据写到隐藏地方
for(i=0;i<10;i++)
{
write_data(table[i]);
delay(5);
}
write_con(0x80+0x40+17); //第二行数据
delay(50);
for(i=0;i<11;i++)
{
write_data(table1[i]);
delay(50);
}
for(i=0;i<16;i++)
{
write_con(0x18);
delay(500);
}
TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
TR0=1;
EA=1;
ET0=1;
}
void time_() interrupt 1
{
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
aa++;
}
void write_sfm(uchar wei,uchar shu) //在wei 处写数据 shu
{
uchar shiw,gew;
write_con(0x80+0x40+wei);
shiw=shu/10;
gew=shu%10;
write_data(0x30+shiw);
write_data(0x30+gew);
}
main()
{ init();
while(1)
{
keyscan();
if(aa==20)
{
aa=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(3,shi);
}
write_sfm(6,fen);
}
write_sfm(9,miao);
}
}
}
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