/*********************************************************/
//函数:Delay()
//功能:延时
//输入:延时时间设定值
//输出:?
//描述:
/*********************************************************/
void Delay(unsigned char Times)
{
  unsigned char n;
  n = 120;
  for(;Times>0;Times--)
  {
   for(;n>0;n--);

  }
}
/*********************************************************/
//函数:ReadPS2()
//功能:扫描键盘
//输入:
//输出:键值
//描述:
/*********************************************************/\
unsigned char ReadPS2()
{
  //unsigned char KeyCode;   //键盘键值
  unsigned char bitCount; //位数
  while(scl);     // 等待键盘把时钟第一次拉低

     for(bitCount = 8; bitCount != 0; bitCount --)     // 把起始位算入
     {
       WAITFORKEYBOARDPULSE;         // 等待一个有效的下跳沿
       KeyCode   >>= 1;           // 按照PS2格式,数据低位在前
       scl   = 1;
       sda   = 1;
       if(sda == 1)
   {
           KeyCode |= 0x80; // 得到有效的数据位
         }
     }
     WAITFORKEYBOARDPULSE;         // 等待按键发送效验位
     WAITFORKEYBOARDPULSE;         // 等待按键发送终止位
     while(!scl);                 // 等待键盘把时钟线拉高

     // return(KeyCode);                 // 返回按键扫描
}

/*****************************************************************************/
//main.c
//功能:从PS/2口接受键盘信息控制led灯
//修改:
//时间:2006-10-19
//作者:
/*****************************************************************************/

void main()
{
   P0=0xff;     //初始化P0口
           //   P2_1=0;     //屏蔽LCD

   while(1){
                       ReadPS2();
switch(KeyCode)
                 {
                 case 0x05:     //f1
                             LED1=0;
                             break;
                 case 0x06:
                             LED2=0;
                             break;
                 case 0x04:
                     LED3=0;
                             break;
                 case 0x0c:
         LED4=0;
                             break;
                 case 0x03:
                           LED5= 0;
                             break;
                 case 0x0b:
                           LED6=0;
                           break;
               case 0x83:
                             LED7= 0;
                             break;
               case 0x0a:
                             LED8= 0;
                             break;            
               case 0x76:
           P0=0xff;
                               break;
               default:
   break;
                       }
  }
}