本帖最后由 51學者 于 2016-12-25 13:21 編輯
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit SPK = P2^3;
sbit dula = P2^6;
sbit wela = P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar num,num1,num2,bai,shi,ge;
void delay(uint z) //延時函數
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void display (uchar bai,uchar shi,uchar ge)
{
dula=0;
P0=table[bai];
dula=1;
dula=0;
wela=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);
dula=0;
P0=table[shi];
dula=1;
dula=0;
wela=0;
P0=0xfd;
wela=1;
wela=0;
delay(5);
dula=0;
P0=table[ge];
dula=1;
dula=0;
wela=0;
P0=0xfd;
wela=1;
wela=0;
delay(5);
}
void main() //主函數
{
TMOD = 0x11;
TH0 = (65536-45872)/256;
TL0 = (65536-45872)%256;
TH1 = (65536-45872)/256;
TL1 = (65536-45872)%256;
EA = 1;
ET0 = 1;
ET1 = 1;
TR0 = 1;
TR1 = 1;
while(1)
{
display(bai,shi,ge);
}
}
void T0_time() interrupt 1
{
TH0 = (65536-45872)/256;
TL0 = (65536-45872)%256;
num1++;
if(num1==20)
{
num1 = 0;
SPK = ~SPK;
}
}
void T1_time() interrupt 3
{
TH1 = (65536-45872)/256;
TL1 = (65536-45872)%256;
num2++;
if(num2==20)
{
num2 = 0;
num++;
if(num==120)num=0;
bai = num/100;
shi = num%100/10;
ge = num%10;
}
}
這是一個120正計時程序 |
