main.c

用“飞思卡尔”MC9S12DG128单片机实现简答抢答器功能

                                    #include <hidef.h>      /* common defines and macros */
#include <mc9s12dg128.h>     /* derivative information */
#pragma LINK_INFO DERIVATIVE "mc9s12dg128b"

#include "LED.h"

extern   INT8U  DispSegTbl[],DispHexToSegTbl[];

#define   A        PORTA_BIT0     //A键，接定时器TC1
#define   B        PORTA_BIT1     //B键，接定时器TC2
#define   C        PORTA_BIT2     //C键，接定时器TC3
#define   Stop     PORTA_BIT3     //Stop键，接定时器TC1


 unsigned char   Flag;  //标志，记时
 unsigned char   F;     //用于判定是显示0--60s记时，或者显示