led時(shí)鐘的設(shè)計(jì)
- 文件介紹：
- 該文件為 docx 格式，下載需要 1 積分
- 實(shí)驗(yàn)3#include
#include
#include
#define uchar unsigned char
#define uint unsigned int
#define out P0
sbit RS=P3^0;
sbit RW= P3^1;
sbit E=P3^2;
uchar int_time;
uchar second;
uchar minute;
uchar hour;
uchar code date[]=" H.I.T. CHINA ";
uchar code time[]="TIME 23:59:55 ";
uchar second =55,minute = 59,hour = 23;
void check_busy(void)
{
uchar dt;
do
{
dt = 0xff;
E=0;
RS=0;
RW=1;
E=1;
dt= out;
}while(dt&0x80);
E=0;
}
void delay(uint j)
{
uchar i =250;
for(;j>0;j--)
{
while(--i);
i=249;
while(--i);
i=250;
}
}
void write_com(uchar com)
{
check_busy();
E=0;
RS=0;
RW=0;
out= com;
E=1;
_nop_();
E=0;
delay(1);
}
void write_data(uchar dat)
{
check_busy();
E=0;
RS=1;
RW=0;
out=dat;
E=1;
_nop_();
E=0;
delay(1);
}
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_data(0x30+shi);
write_data(0x30+ge);
}
void clock_init()
{
uchar i,j;
for(i=0;i<16;i++)
{
write_data(date[i]);
}
write_com(0x80+0x40);
for(j=0;j<16;j++)
{
write_data(time[j]);
}
}
void clock_write(uint s,uint m,uint h)
{
write_sfm(0x47,h);
write_sfm(0x4a,m);
write_sfm(0x4d,s);
}
void main()
{
init1602();
clock_init();
TMOD=0x01;
EA=1;
ET0=1;
TH0=(65536-15536)/256;
TL0=(65536-15536)%256;
TR0=1;
int_time=0;
second=55;
minute=59;
hour=23;
while(1)
{
clock_write(second,minute,hour);
}
}
...
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