#include?
typedef?unsigned?char?uchar;
#define	DIGIT0	1
#define	DIGIT1	2
#define	DIGIT2	3

sbit?TIMEK1=P3^3;
sbit?TIMEK2=P3^4;
sbit?TIMEK3=P3^5;
sbit?TIMEK4=P3^6;
sbit?KEY5=P1^4;
sbit?din=P2^4;??????????????????????????//定義P2.5控制MAX7219的串行數(shù)據(jù)輸入端
sbit?load=P2^3;?????????????????????????//定義P2.4控制MAX7219的載入使能端
sbit?clk=P2^2;??????????????????????????//定義P2.3控制MAX7219的時(shí)鐘信號(hào)
sbit?BUZ=P0^1;
#define?TIMER_HBYTE?-50000/256??????????//定時(shí)50ms
#define?TIMER_LBYTE?-50000%256
uchar?intr_counter;?????????????????????//設(shè)定的時(shí)間用需要產(chǎn)生的中斷次數(shù)表示
uchar?bdata?byte;???????????????????????//在bdata區(qū)定義一個(gè)變量，便于位操作
sbit?byte_7=byte^7;
bit?foul_flg;???????????????????????????//是否有人犯規(guī)標(biāo)志
bit?time_over_flg;??????????????????????//是否倒計(jì)時(shí)超時(shí)標(biāo)志
bit?key_flg;????????????????????????????//是否有人在規(guī)定時(shí)間內(nèi)按鍵標(biāo)志
void?max7219_reset（void）;???????????????//初始化MAX7219
void?write_reg（ucharuchar）;????????????//向控制寄存器寫數(shù)據(jù)
void?write_digit（ucharuchar）;??????????//向字型寄存器寫數(shù)據(jù)
void?send_data（uchar）;??????????????????//底層的硬件驅(qū)動(dòng)
uchar?set_time（void）;???????????????????//函數(shù)功能：設(shè)置倒計(jì)時(shí)時(shí)間
bit?control_key（void）;??????????????????//函數(shù)功能：檢測(cè)主持人是否按鍵
uchar?getkey_num（void）;????????????????//函數(shù)功能：檢測(cè)哪個(gè)參賽者按鍵
void?display_time（void）;????????????????//函數(shù)功能：顯示倒計(jì)時(shí)剩余時(shí)間
void?foul_handle（uchar??key_number1）;????????????????//函數(shù)功能：犯規(guī)處理
void?key_handle（uchar?key_number1）;?????????????????//函數(shù)功能：按鍵處理
void?time_over_handle（void）;????????????//函數(shù)功能：超時(shí)處理
void?init_t0（void）;?????????????????????//函數(shù)功能：初始化T0定時(shí)器
void?delay_20ms（void）;??????????????????//函數(shù)功能：延時(shí)20ms，按鍵去抖動(dòng)
void?buz_on（void）;???????????????????????//函數(shù)功能：蜂鳴器響500ms
????uchar?key_number;
void?main（void）
{
????delay_20ms（）;
????max7219_reset（）;?????????????????????//初始化MAX7219
????while（1）
????{
????????foul_flg=0;??????????????????????//設(shè)置初始環(huán)境
????????time_over_flg=0;
????????P0=0;
????????TR0=0;???????????????????????????//禁止T0運(yùn)行
????????write_digit（DIGIT00x0）;//上電后3個(gè)數(shù)碼管全部顯示0??a=0?b=E?c=H
????????write_digit（DIGIT10x0）;
????????write_digit（DIGIT20x0）;
????????while（（control_key（）==1）&&（foul_flg==0））
??????????????????????????????????????????//如果主持人沒有按鍵
????????{
????????????key_number=getkey_num（）;??????//檢查是否有人犯規(guī)
????????????if（key_number==0）?????????????//如果沒有，進(jìn)行下一次循環(huán)
????????????????continue;
????????????else??????????????????????????//如果有人犯規(guī)
????????????{
????????????????foul_handle（key_number）;????????//犯規(guī)處理
????????????????foul_flg=1;???????????????//設(shè)置犯規(guī)標(biāo)志
????????????}
????????}
????????if（foul_flg==1）??????????????????//如果有人犯規(guī)
????????{
????????????while（control_key（）==1）;??????//等待主持人按鍵以進(jìn)入下一輪
????????????continue;?????????????????????//主持人按鍵后進(jìn)入下一輪
????????}
????????else?????????????????????????????//如果沒有人犯規(guī)，必定是主持人允許答題
????????{
????????????intr_counter=set_time（）;??????//讀取倒計(jì)時(shí)時(shí)間
????????????init_t0（）;????????????????????//定時(shí)器T0開始計(jì)時(shí)
????????????buz_on（）;?????????????????????//蜂鳴器響500ms
????????????while（time_over_flg==0&&key_flg==0）
????????????{
????????????????key_number=getkey_num（）;?

?屬性????????????大小?????日期????時(shí)間???名稱
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?????文件??????10166??2010-05-09?11:36??4QD\4luqiangdaqi

?????文件???????1494??2010-05-09?11:36??4QD\4luqiangdaqi.hex

?????文件?????????47??2010-05-09?11:36??4QD\4luqiangdaqi.lnp

?????文件??????14990??2010-05-09?11:36??4QD\4luqiangdaqi.M51

?????文件???????1077??2010-05-09?11:40??4QD\4luqiangdaqi.Opt

?????文件???????1453??2010-05-09?11:36??4QD\4luqiangdaqi.plg

?????文件???????2094??2010-05-08?23:59??4QD\4luqiangdaqi.Uv2

????.......??????1079??2010-05-09?00:25??4QD\4luqiangdaqi_Opt.Bak

????.......??????2094??2010-05-03?12:10??4QD\4luqiangdaqi_Uv2.Bak

?????文件?????130467??2010-05-09?12:00??4QD\kkkkk.DSN

?????文件????????768??2010-05-09?14:35??4QD\kkkkk.PWI

?????文件?????130560??2010-05-09?11:58??4QD\Last?Loaded?kkkkk.DBK

?????文件???????3365??2010-05-09?12:32??4QD\MAIN

?????文件????????480??2010-05-09?12:32??4QD\MAIN.BIN

?????文件????????150??2010-05-08?22:10??4QD\MAIN.C

?????文件???????3195??2010-05-10?19:07??4QD\MAIN.DSK

?????文件???????1169??2010-05-09?12:32??4QD\MAIN.HEX

?????文件???????2186??2010-05-08?22:10??4QD\MAIN.LST

?????文件??????15450??2010-05-09?12:32??4QD\MAIN.M51

?????文件????????516??2010-05-08?22:10??4QD\MAIN.OBJ

?????文件???????2116??2010-05-10?18:26??4QD\MAIN.PRJ

?????文件????????139??2010-05-09?12:32??4QD\TEMP.LST

?????文件???????2116??2010-05-09?00:25??4QD\Untitled

?????文件?????????59??2010-05-09?12:32??4QD\WAVE.LIN

?????文件???????8937??2010-05-09?12:32??4QD\xxx.c

?????文件??????17988??2010-05-09?12:32??4QD\XXX.LST

?????文件???????5190??2010-05-09?12:32??4QD\XXX.OBJ

?????目錄??????????0??2010-05-09?14:35??4QD

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???????????????359345????????????????????28

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