[源码]CheckKey的工作原理

CJJR

好深奥啊，俺看的一头雾水！

CJJR

{0x0A,0x00,0x25,0x16,0x69,0x6B,0x13,0x17,
0x08,0x00,0x26,0x0E,0x75,0x6A,0x6D,0x20,
0x06,0x00,0x0F,0x0D,0x79,0x68,0x6E,0x2E,
0x18,0x00,0x27,0x70,0x74,0x67,0x62,0x30,
0x00,0x00,0x1F,0x15,0x72,0x66,0x76,0x1B,
0x02,0x00,0x1E,0x14,0x65,0x64,0x63,0x12,
0x04,0x00,0x1D,0x6C,0x77,0x73,0x78,0x1A,
0x0C,0x00,0x1C,0x6F,0x71,0x61,0x7A,0x19};

详细看一下，其他基本都能看懂一点，就是这个用十六进制的数组元素的数组不知是干啥的。经常在一些代码里看到类似的数组，现在看见就有一种恐惧感！C语言好难啊！！

yan

键盘上的按键对应的键值。比如： 输入键对应13

wqstar028

13对应的十六数就是0x0d

yan

//NC3000的CheckKey的工作原理
//其他机型应该只需要改动一下key_table就可以了
#define KEY_IO   0xbf
#define KEY     0xc7
char mask[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};//掩码
char key_table[64]=//键值表
{0x0A,0x00,0x25,0x16,0x69,0x6B,0x13,0x17,
0x08,0x00,0x26,0x0E,0x75,0x6A,0x6D,0x20,
0x06,0x00,0x0F,0x0D,0x79,0x68,0x6E,0x2E,
0x18,0x00,0x27,0x70,0x74,0x67,0x62,0x30,
0x00,0x00,0x1F,0x15,0x72,0x66,0x76,0x1B,
0x02,0x00,0x1E,0x14,0x65,0x64,0x63,0x12,
0x04,0x00,0x1D,0x6C,0x77,0x73,0x78,0x1A,
0x0C,0x00,0x1C,0x6F,0x71,0x61,0x7A,0x19};
int checkkey(char key)
{char key_buf[8];
char i,j;
memmove(key_buf,KEY_IO,8);
if(key<128)
{for(i=0;i<64;i++)
  {if(key==key_table)
    {i=mask[i&7]&key_buf[i>>3];
    if(i)return(0);
    else return(-1);
    }
  }
  return(0);
}
for(i=0;i<8;i++)
  {if(key_buf!=0xFF)
   {for(j=0;j<8;j++)
    {
     if(((key_buf>>j)&1)==0)return(key_table[(i<<3)+j]);
    }
   }
  }
}
void main()
{int key;
SetScreen(1);
for(;;)
{key=checkkey(128);
  printf("%d %c\n",key,key);
  if(checkkey(&#39;q&#39;))break;
}
}

xintu1987

想不到这么简单就可以了~！
真是没有做不到
只有想不到啊`！