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#include <at89x52.h>
#define key_start 0x40//按鍵用P3.6按鍵開始　 
#define key_pause 0x80//探按兩下暫停
int P2table[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01,0x02,0x04,0x08,0x10,0x20,0x40};
char const P0table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
char bdata flag;
sbit Mode0_flag=flag^0;
sbit Mode1_flag=flag^1;
sbit up_flag=flag^2;
int task;
int anti_cck_i;
int pili_led_i;
int i=2;
int ii;
int j=0;
int count=0;
char k=0;
int time=0;
char Trg;
char Cont;
unsigned char zero_cnt;

sbit buzzer = P3^5;
char bcd[2]={0,0};
char P1table[]={0xFE,0xfD,0xFF};
void delay_1ms(int k)
{
 int i,j;
 for(i=0;i<k;i++)
  for(j=0;j<110;j++)
       ;
}
void task1_seg7_rotate3_cck()//???????
 {
   for(anti_cck_i=0;anti_cck_i<3;anti_cck_i++)
   {
   P1=0XFE;P0=0XFE;delay_1ms(50);//?a ???
   P1=0XFD;P0=0XFE;delay_1ms(50); //?a???
   P1=0XFB;P0=0XFE;delay_1ms(50); //?a???
   P1=0XF7;P0=0XFE;delay_1ms(50); //?a???

   P1=0XF7;P0=0XDF;delay_1ms(50); //?f???
   P1=0XF7;P0=0XEF;delay_1ms(50); //?e???

  P1=0XF7;P0=0XF7;delay_1ms(50); //?d???
   P1=0XFB;P0=0XF7;delay_1ms(50); //?d???
   P1=0XFD;P0=0XF7;delay_1ms(50); //?d???
   P1=0XFE;P0=0XF7;delay_1ms(50); //?d???

  P1=0XFE;P0=0XFB;delay_1ms(50); //?c???
   P1=0XFE;P0=0XFD;delay_1ms(50); //?b???
   }
   P1=0XFE;P0=0XFE;delay_1ms(500); //?a???
 }

void task2_8LED_rotate3()
{
 for(ii=0;ii<3;ii++)
 {
  for(pili_led_i=0;pili_led_i<14;pili_led_i++)
  {
  P2=~P2table[pili_led_i];delay_1ms(50);
  }
 }
}

void task3_buzzer_beep3(int count,int TH,int TL)
{
 int i;
 for(i=0;i<count;i++)
 {
  buzzer=0;
  delay_1ms(TL);
  buzzer=1;
  delay_1ms(TH);
 }
}
void init()
{
 int task=1;//
 if(task==1)
 {
  P0=~0xFF;P1=0XFF;
  task1_seg7_rotate3_cck();//
  P0=~0xFF;P1=0XFF;//OFF
  task=2;
 }
 if(task==2)
 {
   task2_8LED_rotate3();
   P2=~0x80;delay_1ms(500);P2=0xFF;
   task=3;
 }
 if(task==3)
 {
    int i;
    for(i=0;i<3;i++)
    { 
     task3_buzzer_beep3(100,1,1);delay_1ms(10);
     }
 }
}
void T0_int(void) interrupt 1
{
   TH0=(65536-5000)/256;
   TL0=(65536-5000)%256;
   P0=P0table[ bcd[j] ];
   P1=P1table[j];
   j++;       
   if(j==2) j=0;
}
void T1_int(void) interrupt 3
{
 TH1=(65536-50000)/256;
 TL1=(65536-50000)%256;
 time++;
 if(time %2==0)
 {
    count++;
    if(count==100)   count=0;
    bcd[1]=count/10;
    bcd[0]=count%10;
 }
}
void KeyRead()
{
    unsigned char ReadData = P3^0xff;   // 1
   ReadData &= 0xc0; //按鍵只讀取 P3.6 及 P3.7不一定要0XC0
/*
        11000000       11000000
    &)10000000   &01000000
        10000000       01000000都沒有按為0X00，有壓為1沒壓為0
*/
    Trg = ReadData & (ReadData ^ Cont); // 2
    Cont = ReadData;  // Cont =為最後按鍵值(沒有放開也是ReadData)=ReadData例如0x40 0x80
   Trg=0, cont=readdata
/*
  不是0x80不然就是0x40
*/
}
void KeyProc()
{
if(Trg & key_start) TR1=1;//Trg & 只會做一次, 按著不放也是0
/*
Triger只會出現(判斷)一次，Triger沒有按皆為0，cont也是0，
按一次開始計數 P3.6 0x40 & 0x40 =0x40
*/
if(Trg & key_pause)
/*按一次開始計數   P3.7 0x80 & 0x80=0x80  */
{ //短按兩次停止計數
TR1=1;
k++;
if(k == 2)
TR1=0;
}
if(!Trg & !Cont) //按一次放開後 k 為零，按一下k=1, 不執行任何動作,反相Trg 反相cont
{                   //沒壓也執行此段
/*
  10000000 &
*/
zero_cnt++;
if(zero_cnt>10)//放開執行k清除
{
zero_cnt=0;
k=0;;
}
}
if (Cont & key_pause)//按著不放開是0
/*
長按按鍵停止計數並歸零
0x80 & 0x80
*/
{
zero_cnt++;
if(zero_cnt>50)
{
zero_cnt=0;
TR1=0;
count=0;   
bcd[1]=0;
bcd[0]=0;
}
}
}
void main()
{
init();
P3=0xFF;
  IE=0x8A; 
  TMOD=0x11; 
  TH0=(65536-5000)/256;
  TL0=(65536-5000)%256;
  TH1=(65536-50000)/256;
  TL1=(65536-50000)%256;
  Mode0_flag=1;
  TR0=1; TR1=0;
  while(1)
  {
if(Mode0_flag==1)
{
delay_1ms(80); //防止按鍵彈跳，delay時間配合短按兩下的時間調整
KeyRead();
KeyProc();
}
  }
}