key.txt

hehe 在这儿给大家共同分享!!! !!!!

#include"spce061a.h"
unsigned int key;

int delay(unsigned int t)
{int m;
 for(m=0;m<t;m++) *P_Watchdog_Clear=1;
}

int scan()
{   int i,j,s;
 int r=10;
 for(i=0;i<=3;i++)
   {*P_IOA_Data|=0x00ff;
     *P_IOA_Data&=~(0x0001<<i);            //i行输出为0
      for(j=4;j<8;j++)
      {if((*P_IOA_Data&(0x0001<<j))==0)     //j行为0
         {delay(30);
             if((*P_IOA_Data&(0x0001<<j))==0)
                {key=*P_IOA_Data&0x00ff;

                switch(key)
                   {    
                    case 0x00ee:   r=0;break;
                    case 0x00e7:   r=1;break; 
                    case 0x00d7:   r=2;break;
                    case 0x00b7:   r=3;break;
                    case 0x00eb:   r=4;break; 
                    case 0x00db:   r=5;break;
                    case 0x00bb:   r=6;break;
                    case 0x00ed:   r=7;break;
                    case 0x00dd:   r=8;break;
                    case 0x00ed:   r=9;break;
                    case 0x0077:   r=10; break;
                    case 0x007b:   r=11; break;
                    case 0x007d:   r=12; break;
                    case 0x007e:   r=13; break;
                    case 0x00de:   r=14; break;
                    case 0x00be:   r=15; break;
                    default :      break;
                  }

              }
          }
      }
   }
   return r;
}