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| #include <STC89C5xRC.H>
sbit DAT=P1^1;
sbit CLK=P1^0;
unsigned char code tab[]= {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40,0xff}; // 显示0~9,-,全灭
//unsigned char code ff[]= {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x77}; //位选;
unsigned char hour,minite,second;
//开启计时
void loading()
{
TMOD=0x01; //工作方式1,65536
TL0 = 0xb0; //设置定时50ms初始值
TH0 = 0x3c; //设置定时50ms初始值
TR0=1;//开启定时器0中断
TR0=1;
ET0=1;
EA=1;
}
//以下是显示程序,共八个,因为有八个数码管;
void sendbyte(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xfe;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num;
CLK=1;
num<<=1;
}
}
void sendbyte\_1(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xfd;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
void sendbyte\_2(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xfb;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
void sendbyte\_3(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xf7;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
void sendbyte\_4(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xef;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
void sendbyte\_5(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xdf;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
void sendbyte\_6(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++) {
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0xbf;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
void sendbyte\_7(unsigned char byte)
{
unsigned char num,c;
num=tab[byte];
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
num=0x7f;
for(c=0; c<8; c++)
{
CLK=0;
DAT=num&0x80;
CLK=1;
num<<=1;
}
}
//延时
void delay(unsigned int xms)
{
unsigned int i,j;
for(i=xms;i>0;i--)
for(j=96;j>0;j--);
}
void main()
{
loading();
while(1)
{
sendbyte(second%10); //秒，个位
delay(5);
sendbyte(11);//消隐
sendbyte\_1(second/10); //秒，十位
delay(5);
sendbyte\_2(10); //‘-’
delay(5);
sendbyte\_3(minite%10); //分，个位
delay(5);
sendbyte\_4(minite/10); //分，十位
delay(5);
sendbyte\_5(10); //‘-’
delay(5);
sendbyte\_6(hour%10); //小时，个位
delay(5);
sendbyte\_7(hour/10); //小时，十位
delay(5);
}
}
void time(void) interrupt 1
{
static volatile unsigned char tt=0;
tt++;
TL0 = 0xb0; //设置定时初始值(65536-50000)%256
TH0 = 0x3c; //设置定时初始值(65536-50000)/256
if(tt==20)
{
tt=0;
second++;
if(second==60)
{
second=0;
minite++;
if(minite==60)
{
minite=0;
hour++;
if(hour==24) hour=0;
}
}
}
}
|
