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標題: 四個按鍵槍聲單片機模擬 [打印本頁]

作者: 羿羽鋒 時間: 2017-5-20 00:34
標題: 四個按鍵槍聲單片機模擬
#include <reg52.h>
#include <intrins.h>

#define uchar unsigned char
#define uint  unsigned int

sbit  BEEP= P1^5;
sbit  K1  = P3^0;
sbit  K2  = P3^1;
sbit  K3  = P3^3;
sbit  K4  = P3^2;

uchar  H_count,L_count;

/*********************************************************/
void  main()
{
      P0=0;
      BEEP=1;
TMOD=0x01;
TH0=0xff;
TL0=0xa0;
H_count=0xff;
L_count=0xa0;
EA=1;
ET0=1;

while(1)
{
   if(K1 == 0)  TR0=1;
      if(K2 == 0)  TR0=1;
      if(K3 == 0)  TR0=1;
      if(K4 == 0)  TR0=1;
}
}

/*********************************************************

**********************************************************/
void Time0(void) interrupt 1 using 0
{
      BEEP=~BEEP;
      if( L_count!=0x00 )
      {
         L_count--;
         TH0=H_count;
   TL0=L_count;
   return;
   }else  H_count--;

      if( H_count!=0xfc )
      {
         L_count--;
         TH0=H_count;
   TL0=L_count;
   return;
      }
      else
   {
      H_count=0xff;
      L_count=0xa0;
      TH0=H_count;
      TL0=L_count;
      BEEP=1;
      TR0=0;
   }
}

/*********************************************************/

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