#include<reg52.h>
typedef unsigned char u8;
typedef unsigned int u16;
/********端口定义*********/
#define DATA P0
#define LED P1
#define DATA1 P2
//sbit seg_sel = P1^4;
//sbit bit_sel = P1^5;
sbit seg_sel=P2^5;
sbit bit_sel0=P2^0;
sbit bit_sel1=P2^1;
sbit bit_sel2=P2^2;
sbit bit_sel3=P2^3;
sbit bit_sel4=P2^4;
sbit start = P3^2;
sbit store = P3^3;
sbit diskey = P3^4;
sbit reset = P3^5;
sbit led = P1^0;
/********变量定义*********/
u16 tem_ms;
u8 n_ten_ms,n_sec,n_min;
u8 run_flag;//当run_flag为1，代表开始计数
u8 temp_buf[5][3];
u8 arr_pt;
u8 num;
u8 code seg_tab[]={
0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0x88,0x83,
0xc6,0xa1,0x86,0x8e };
u8 code seg_tab1[]={
0x40,0x79,0x24,0x30,
0x19,0x12,0x02,0x78,
0x00,0x10,0x08,0x03,
0x46,0x81,0x06,0x0e
};//带小数点
u8 code led_minute[]={
0xff,0xfe,0xfc,0xf8,0xf0,
0xe0,0xc0,0x80,0x00
};//用所点亮LED灯的个数来表示计时的分钟数
u8 code bit_tab[]={
0x7,0xB,0xD,0xE
};
void delay(unsigned int y)
{
unsigned int x,z;
for(x=y; x>0; x--)
for(z=110; z>0; z--);
}
void led_fun(void)
{
LED = led_minute[n_min];
}
void display_led(u8 which_bit, u8 which_number)
{ if(which_bit==2)
{
DATA1 = bit_tab[which_bit];
seg_sel = 1;
DATA = seg_tab1[which_number];
seg_sel = 0;
}
else if(which_bit==1)
{
DATA1 = bit_tab[which_bit];
seg_sel = 1;
DATA = seg_tab[which_number];
seg_sel = 0;
}
}
// 1 29
void display(u8 which_bit, u8 which_number)
{
u8 x,y;
x = which_number/10;//分离十位
y = which_number%10;//分离个位
if (which_bit == 1)
{
display_led(1, x);
delay(2);
display_led(0, y);
delay(2);
}
if (which_bit == 2)
{
display_led(3, x);
delay(2);
display_led(2, y);
delay(2);
}
//if (which_bit == 3)
// {
// led_fun(void);
// delay(2);
// led_fun(void);
// delay(2);
// }
}
void reflash (void)
{
display(1, n_ten_ms);
display(2, n_sec);
display(3, n_min);
}
void main (void)
{
TMOD = 0x01;//设置定时/计数器T0
TH0 = (65535-10000) / 256;
TL0 = (65535-10000) % 256;
EA = 1;//开放总中断
ET0 = 1;//开放定时器0的溢出中断
//TR0 = 1;
while (1)
{
if (start == 0)
{
delay(5);
if (start == 0)
{
run_flag = ~run_flag;
} while(!start);
}
if (reset == 0)
{
delay(5);
if (reset == 0)
{
n_ten_ms = 0;
n_sec = 0;
n_min = 0;
} while(!reset);
}
if (store == 0)
{
delay(5);
if (store == 0)
{
if ((arr_pt >=0) && (arr_pt< 5))
{
temp_buf[arr_pt][0] = n_ten_ms;
temp_buf[arr_pt][1] = n_sec;
temp_buf[arr_pt][2] = n_min;
arr_pt++;
}
} while(!store);
}
if (run_flag)
{
TR0 = 1; //开始计数
}
else if (!run_flag)
{
TR0 = 0;
}
reflash();
}
}
void t0_server(void) interrupt 1
{
TH0 = (65535-10000) / 256;
TL0 = (65535-10000) % 256;
n_ten_ms++;
if (n_ten_ms >= 100)
{
n_ten_ms = 0;
n_sec++;
if (n_sec >= 60)
{
n_sec = 0;
n_min++;
num++;
if (n_min >= 60)
n_min = 0;
}
}
}
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