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標題: 矩陣鍵盤控制數碼管秒表的問題 [打印本頁]

作者: hao0314 時間: 2017-11-30 21:35
標題: 矩陣鍵盤控制數碼管秒表的問題
各位大俠幫忙看一下問題出在那兒，秒表開始后按了設定了好的按鍵不會停止，想實現的功能是按下key2=5的按鍵開始，再按下停止以此循環查了一下似乎if(key2==5)下面的語句進不去TR0一直都是1，按鍵編碼檢查了沒有問題，還望指點迷津

#include <reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint  unsigned int
sbit wei=P2^6;
sbit duan=P2^7;
uchar code table_tube[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar code a[]={0xFE,0xFD,0xFB,0xF7};
uint xms,temp,key1,key2;
uchar num,bai,shi,ge,tt0;
void delay(uint);
void display(uchar,uchar,uchar);
void init();
uchar keynum();
uchar coding(uchar);

void main()
{
      init();
      while(1)
      {
            key1=keynum();
            key2=coding(key1);
            if(key2==5)
            {
                     key2=0;
                     TR0=~TR0;
            }
      }
}

void init()
{
      TMOD=0x11;
      TH0=(65535-10000)/256;
      TL0=(65535-10000)%256;
      TH1=(65535-1000)/256;
      TL1=(65535-1000)%256;
      EA=1;ET0=1;TR0=1;
      ET1=1;TR1=1;

      P1=0xff;
      wei=1;
      P0=0xf8;
      wei=0;
      duan=1;
      P0=table_tube[0];
      duan=0;
}
void display(uchar bai,uchar shi,uchar ge)
{
      wei=1;
      P0=0xfe;
      wei=0;
      duan=1;
      P0=table_tube[bai]+0x80;
      duan=0;
      delay(1);

      wei=1;
      P0=0xfd;
      wei=0;
      duan=1;
      P0=table_tube[shi];
      duan=0;
      delay(1);

      wei=1;
      P0=0xfb;
      wei=0;
      duan=1;
      P0=table_tube[ge];
      duan=0;
      delay(1);
}

uchar coding(uchar m)
{
  uchar k;
      switch(m)
      {
            case (0xee): k=0;break;
            case (0xde): k=1;break;
            case (0xbe): k=2;break;
            case (0x7e): k=3;break;
            case (0xed): k=4;break;
            case (0xdd): k=5;break;
            case (0xbd): k=6;break;
            case (0x7d): k=7;break;
            case (0xeb): k=8;break;
            case (0xdb): k=9;break;
            case (0xbb): k=10;break;
            case (0x7b): k=11;break;
            case (0xe7): k=12;break;
            case (0xd7): k=13;break;
            case (0xb7): k=14;break;
            case (0x77): k=15;break;
      }
      return k;
}
uchar keynum()
{
  uchar i,k;
      P1=0xf0;          //¿éòÔÖ±½óìáè¡¸ßËÄÎ»±è½Ï￡¬èôÎT¼ü°′ÏÂ￡¬¸ßËÄÎ»±Ø¶¨êÇ1111￡¬±è½ÏP1&0xf0oí0xf0êÇ·ñÏàí¬¼′¿é
      if((P1&0xf0)!=0xf0)
      {
      delay(5);
            if((P1&0xf0)!=0xf0)
            {
                     i=0;
               P1=a[i];
                     while(i<4)
                     {
                              if((P1&0xf0)!=0xf0)    //¿éòÔÖ±½óìáè¡¸ßËÄÎ»￡¬±è½ÏP1&0xf0oí0xf0
                              {
                                    k=P1;
                                    break;
                              }
                              else
                              {
                                    i++;
                                    P1=a[i];
                              }
               }
            //       while((P1&0xf0)!=0xf0);
                     return k;
            }
      }
      return 0;
}

void delay(uint xms)
{
      uint x,y;
      for(x=xms;x>0;x--)
      for(y=110;y>0;y--);
}
void timer0()interrupt 1
{
      TH0=(65535-10000)/256;
      TL0=(65535-10000)%256;
      temp++;
      if(temp==1000)
            temp=0;
      bai=temp/100;
      shi=temp%100/10;
      ge=temp%100%10;
}
void timer1()interrupt 3
{
      TH1=(65535-1000)/256;
      TL1=(65535-1000)%256;
display(bai,shi,ge);
}

作者: dxxxyydxxxy 時間: 2017-11-30 21:45
按鍵檢測的時候是不是加點延時

作者: dxxxyydxxxy 時間: 2017-11-30 21:46
按鍵檢測的時候是不是加點延時

作者: 偶也 時間: 2017-11-30 22:08
應該不是延時的問題吧

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