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| #include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
sbit dula = P2^6;
sbit wela = P2^7;
sbit TSCLK = P1^0;
sbit TIO = P1^1;
sbit RSET = P1^2;
sbit beep = P2^3;
char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
char code location[] = {0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
void dis_delay(int z)
{
int x,y;
for (x = 114; x; x--)
{
for (y = z; y; y--);
}
}
void display(uchar num,uchar index)
{
uchar i,j,temp,a[8];
if (num < 10)
{
a[1] = 0;
a[0] = num;
}
else
{
for (i = 0, temp = num; temp; temp /= 10, i++)
{
a[i] = temp % 10;
}
}
for (j = 0; j < i; j++)
{
P0 = 0xff;
wela = 1;
P0 = location[j + index];
wela = 0;
P0 = 0;
dula = 1;
if (j == 0 && index != 0)
P0 = table[a[j]] | 0x80;
else
P0 = table[a[j]];
dis_delay(0);
P0 = 0;
dula = 0;
}
}
void write(uchar cmd,uchar dat)
{
uchar i;
RSET = 0;
TSCLK = 0;
RSET = 1;
for (i = 0; i < 8; i++)
{
TSCLK = 0;
TIO = cmd & 0x01;
TSCLK = 1;
cmd >>= 1;
}
for (i = 0; i < 8; i++)
{
TSCLK = 0;
TIO = dat & 0x01;
TSCLK = 1;
dat >>= 1;
}
}
uchar read(uchar cmd)
{
uchar i,dat;
RSET = 0;
TSCLK = 0;
RSET = 1;
for (i = 0; i < 8; i++)
{
TSCLK = 0;
TIO = cmd & 0x01;
TSCLK = 1;
cmd >>= 1;
}
for (i = 0; i < 8; i++)
{
TSCLK = 0;
dat >>= 1;
if (TIO)
{
dat |= 0x80;
}
TSCLK = 1;
}
return dat;
}
uchar BCD_to_DS(uchar dat)
{
uchar dat1,dat2;
dat1 = dat / 10;
dat2 = dat % 10;
dat2 += dat1 * 16;
return dat2;
}
uchar DS_to_BCD(uchar dat)
{
uchar dat1,dat2;
dat1 = dat / 16;
dat2 = dat % 16;
dat2 += dat1 * 10;
return dat2;
}
uchar hour,min,sec,index = 0;
void main()
{
EA = 1;
ET0 = 1;
TR0 = 1;
TMOD = 0x01;
TH0 = 0;
TL0 = 0;
write(0x8e,0);
write(0x80,BCD_to_DS(50));
write(0x82,BCD_to_DS(59));
write(0x84,BCD_to_DS(10));
write(0x8e,0x80);
while (1)
{
write(0x8e,0);
sec = DS_to_BCD(read(0x81));
min = DS_to_BCD(read(0x83));
hour = DS_to_BCD(read(0x85));
write(0x8e,0x80);
display(hour,4);
display(min,2);
display(sec,0);
}
}
void timer() interrupt 1
{
TH0 = 0;
TL0 = 0;
index++;
if (min ==0 && sec == 0 && index == 14)
{
beep = 1;
dis_delay(500);
beep = 0;
index = 0;
}
}
|
