#include <reg51.h>
#include<absacc.h>

#define uchar unsigned char
#define uint unsigned int

void delays(void);//延時
uchar kbscan(void);//鍵盤掃描


/*
sbit P00=P0^0;
sbit P01=P0^1;
sbit P02=P0^2;
sbit P03=P0^3;
sbit P04=P0^4;
sbit P05=P0^5;
sbit P06=P0^6;
sbit P07=P0^7;
*/



void main(void)//主程序
{
uchar key;
         while(1)
         {
         key=kbscan();
         delays(); 
            switch(key)
                  {
                   /* case 0xee:speed++;break;
                      case 0xde:speed=(speed-1);break;
                      case 0xbe:shui01=1;break;
                      case 0x7e:shui02=1;break;
                   */
                      case 0xed:P0=0x81;break;
                      case 0xdd:P0=0x73;break;
                      case 0xbd:P0=0xf3;break;
                      case 0x7d:P0=0xe7;break;
       
                      case 0xeb:P0=0xd6;break;
                      case 0xdb:P0=0x77;break;
                      case 0xbb:P0=0xf5;break;
                      case 0x7b:P0=0x76;break;
       
                      case 0xe7:P0=0xd3;break;
                      case 0xd7:P0=0xc1;break;
                      case 0xb7:P0=0xf7;break;
                      case 0x77:P0=0x74;break; 

                   }

         
          }
	
}




////////////////////鍵盤掃描子程序//////////////////////
uchar kbscan(void)
{
  uchar sccode,recode;
  P1=0xf0;//置所有行為低電平
  if((P1&0xf0)!=0xf0)//判斷列中是否有低電平，有往下執(zhí)行


        {
         delays();
         if((P1&0xf0)!=0xf0)
              {
               sccode=0xFE;
                      while((sccode&0x10)!=0)
                           {
                            P1=sccode;//逐行掃描初值
                               if ((P1&0xf0)!=0xf0)
                                     {
                                      recode=(P1&0xf0)|0x0f;
                                      return(sccode&recode);
                                      }
                               else sccode=(sccode<<1)|0x01;
                            }
               }
         }
}
/////////////延時程序///////////////////////
void delays(void)
{
uchar i;
for (i=300;i>0;i--);
}