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篮球比赛计时记分器
这里，我把之前参加学校比赛的一个小作品放在网上，虽然有很多错误，不过，希望还是能对一些人有帮助吧.
原理图如下：
源程序如下：
/* * =====================================================================
* * Filename: main.h
* Description: declaration for jsq
* Version: 1.0
* Created: 27.11.2011 11:51:54
* Revision: none
* Compiler: sdcc 3.0.0
* Author: YOUR NAME (), * Company: * *
===================================================================== */
#ifndef _MAIN_H_
#define _MAIN_H_
#define uchar unsigned char
#define uint unsigned int
#define FEN 12
//定义蜂鸣器
__sbit __at (0x96) fmq //sbit fmq=P1^6;
uchar sz[] = {0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x90};
//共阳极数字编码(0x0~0x9)
uchar szy[] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f};
//共阴极数字段码//
uchar sw[] = {0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f};
uchar sw[] = {0x25, 0x26, 0x20, 0x2c, 0x34, 0x24, 0x64, 0xa4};
//位码(第0位至第7位)
//定义按键
__sbit __at (0xB0) K1 ; //A队加一分 * sbit K1=P3^0;
__sbit __at (0xB1) K2 ; //A队减一分 sbit K2=P3^1;
__sbit __at (0xB4) K3 ; //B队加一分 sbit K3=P3^4;
__sbit __at (0xB5) K4 ; //B队减一分 sbit K4=P3^5;
__sbit __at (0xB2) K5 ; //24s重置 sbit K5=P3^2;
__sbit __at (0xB3) K6 ; //比赛暂停 sbit K6=P3^3;
//定义计时器引脚
__sbit __at (0x93) dscs ; //sbit dscs=P1^0;
__sbit __at (0x94) dsas ;//sbit dsas=P1^1;
__sbit __at (0x95) dsrw ;//sbit dsrw=P1^2;
__sbit __at (0x96) dsds ;//sbit dsds=P1^3;
//锁存器控制脚__sbit __at (0xB6) wela; //sbit wela=P3^6;
__sbit __at (0xB7) dula; //sbit dula=P3^7;
//定义全局变量uchar a,b; //两队分数__bit PauseFlag=1;
//暂停标识uchar sec24s=24;
//24s计时uchar sec=0,sec2=0;uchar fen,miao,PauseFen=0,PauseMiao=0;
extern void DisplayTime(void);
extern void DisplayGrade(void);
extern void beep(uchar);
extern void delay(uchar);
extern void ds_init();
extern void init();
extern void keyscan();
extern uchar read_ds(uchar );
extern void write_ds(uchar , uchar );
extern void switchTeam();
extern void teamAdd();
extern void teamSub();
extern void pause();
#endif
/* * =====================================================================
* * Filename: main.c
* * Description: main source code for jsq
* * Version: 1.0
* Created: 27.11.2011 11:52:13
* Revision: none
* Compiler: sdcc 3.0.0
* Author: andyhuzhill
* HomePage: http://andyhuzhill.github.io
* ===================================================================== */
#include <8052.h>
#include "main.h"
void delay(unsigned char i)
{
uchar j;
while (i--)
for (j = 0; j < 115; j++);
}
void write_ds(uchar add, uchar ds_data)
{
dscs = 0;
dsas = 1;
dsds = 1;
dsrw = 1;
P0 = add;
dsas = 0;
//锁存数据
dsrw = 0;
P0 = ds_data;
dsrw = 1;
dsas = 1;
dscs = 1;
//都根据时序图
}
uchar read_ds(uchar add)
{
uchar ds_data;
dsas = 1;
dsds = 1;
dsrw = 1;
dscs = 0;
P0 = add;
dsas = 0;
dsds = 0;
P0 = 0xff;
ds_data = P0;
dsds = 1;
dsas = 1;
dscs = 1;
return ds_data;
}//读写DS12CR887
void ds_init(void)
{
dsas = 0; //以下未初始化，很重要
dsds = 0;
dsrw = 0;
write_ds(0x0b, 0x04); //DS12cr887使用二进制编码
write_ds(0x0a, 0x20); //DS12CR887寄存器A功能设置，开启时钟振荡器
}
void keyscan(void)
{
if (K1 == 0)
{
delay(5);
a++;
while (!K1);
}
if (K2 == 0)
{
delay(5);
a--;
while (!K2);
}
if (K3 == 0)
{
delay(5);
b++;
while (!K3);
}
if (K4 == 0)
{
delay(5);
b--;
while (!K4);
}
}
void DisplayTime(void)
{
wela = 1;
P2 = sw[3];
wela = 0;
dula = 1;
P2 = szy[(FEN - fen) / 10];
dula = 0;
delay(5);
wela = 1;
P2 = sw[2];
wela = 0;
dula = 1;
P2 = sz[(FEN - fen) % 10];
dula = 0;
delay(5);
wela = 1;
P2 = sw[5];
wela = 0;
dula = 1;
P2 = sz[(60 - miao) / 10];
dula = 0;
delay(5);
wela = 1;
P2 = sw[4];
wela = 0;
dula = 1;
P2 = szy[(60 - miao) % 10];
dula = 0;
delay(5);
//显示小节时间倒计时
P1_5 = 0;
dula = 1;
P2 = szy[sec24s / 10];
dula = 0;
delay(5);
P1_5 = 1;
P1_4 = 1;
dula = 1;
P2 = sz[sec24s % 10];
dula = 0;
delay(5);
P1_4 = 0;
//24s倒计时显示 wela=1; P2=0x24; wela=0; delay(5);
}
void DisplayGrade(void)
{
wela = 1;
P2 = sw[0];
wela = 0;
dula = 1;
P2 = sz[a / 10];
dula = 0;
delay(5);
wela = 1;
P2 = sw[1];
wela = 0;
dula = 1;
P2 = sz[a % 10];
dula = 0;
delay(5);
//显示A队分数 wela=1; P2=sw[6]; wela=0; dula=1; P2=sz[b/10%10]; dula=0; delay(5); wela=1; P2=sw[7]; wela=0; dula=1; P2=sz[b%10]; dula=0; delay(5);
//显示B队分数
}
void beep(uchar t)
{
fmq = 1;
delay(t);
fmq = 0;
}
void sec24reset(void) __interrupt 0 //24秒复位函数
{ sec24s = 24; sec = 0; TH1 = (65536 - 50000) / 256; TL1 = (65536 - 50000) % 256;}
void sec24sub(void) __interrupt 3
{
if (!PauseFlag)
{
if (sec == 20)
{
sec24s--;
sec = 0;
}
else
{
sec++;
}
if (sec24s == 0)
{
beep(5);
sec24s = 24;
}
}
else { }
}
void pauseint(void) __interrupt 2 //暂停
{
if (PauseFlag)
{
write_ds(0, miao);
write_ds(2, fen);
PauseFlag = 0;
}
else{
fen = read_ds(2);
miao = read_ds(0);
PauseFlag = 1; }
}
void pause()
{
fen = 0;
miao = 0;
PauseFlag = 1;
}
void init(void) // 总初始化函数
{
EA = 1; //全局中断允许
ET1 = 1; //T1中断允许
EX0 = 1;
EX1 = 1; //外部中断允许
TR0 = 1;
TMOD = 0x10;
//TMOD=00010000B T1工作在模式1
TH1 = (65536 - 50000) / 256;
TL1 = (65536 - 50000) % 256;
TR1 = 1; //启动定时器T1
ds_init();
write_ds(2, 0);
write_ds(0, 0);
//将分和秒写入时钟芯片
a = 0;
b = 0;
wela = 0;
dula = 0;
}
/*****************主函数****************/
void main(void)
{
init();
while (1)
{
keyscan();
if (!PauseFlag)
{
fen = read_ds(2);
miao = read_ds(0);
}
DisplayGrade();
DisplayTime();
if ((fen == 12) && (miao == 0))
{
beep(10);
pause();
}
}
}
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