请教：switch，case嵌套

只看该作者 · 2011-3-11 09:01

switch(key1n)
{
case 1:
      switch(key3n)
      {

      case 1:

         lcd_wcmd(0x80); //一号阀自动
         lcd_wdat(0x31); //1
         lcd_wdat(0x23); //#

         lcd_wdat(0xd7);
         lcd_wdat(0xd4); //自
         lcd_wdat(0xb6);
         lcd_wdat(0xaf); //动

         lcd_wcmd(0x90); //在第二行显示：是
         lcd_wdat(0xca);
         lcd_wdat(0xc7);    //是
         lcd_wdat(0x20);
         lcd_wdat(0x20);    //空格

         lcd_wcmd(0x88); //在第三行显示：否
         lcd_wdat(0xb7);
         lcd_wdat(0xf1); //否
         lcd_wdat(0x20);
         lcd_wdat(0x20);    //空格
         lcd_wcmd(0x0c); //将光标关掉
         break;
      case 2:
         flag=1;
            lcd_wcmd(0x80); //一号阀自动
         lcd_wdat(0x31); //1
         lcd_wdat(0x23); //#
         lcd_wdat(0xb7); //阀
         lcd_wdat(0xa7);
         lcd_wdat(0x20); //空格
         lcd_wdat(0x20);


         lcd_wcmd(0x90);
         lcd_wdat(0x20); //空格
         lcd_wdat(0x20);
         lcd_wdat(0x20);
         lcd_wdat(0x20);

         lcd_wcmd(0x88);
         lcd_wdat(0xd7);
         lcd_wdat(0xd4);
         lcd_wdat(0xb6);
         lcd_wdat(0xaf);
         lcd_wcmd(0x0c); //将光标关掉
         break;

         default:

         flag=0;
         key3n=0;
      // xianshi();
         lcd_wcmd(0x80); //一号开阀
         lcd_wdat(0x31); //1
         lcd_wdat(0x23); //#
         lcd_wdat(0xbf);
         lcd_wdat(0xaa); //开
         lcd_wcmd(0x90);    //一号阀停止
         lcd_wdat(0x31);    //1
         lcd_wdat(0x23);    //#
         lcd_wdat(0xcd); //停
         lcd_wdat(0xa3);
         lcd_wcmd(0x88);    //一号关阀
         lcd_wdat(0x31);    //1
         lcd_wdat(0x23);    //#

         lcd_wdat(0xb9);    //关
         lcd_wdat(0xd8);
            lcd_wcmd(0x82);
         lcd_wdat(0x20);
         lcd_wdat(0x20); //空格
         lcd_wcmd(0x0c);
      // break;
         }

      case 2:
   switch(key3n)
   {
      case 1:
      flag=0;
      flag1=1;
      // xianshi();
         lcd_wcmd(0x80); //显示：手
      lcd_wdat(0xca);
      lcd_wdat(0xd6); // 手
      lcd_wdat(0x20);
      lcd_wdat(0x20);


         break;
         default:

      flag1=0;
      key3n=0;
      // xianshi();
      lcd_wcmd(0x80); //一号开阀
      lcd_wdat(0x31); //1
      lcd_wdat(0x23); //#
      lcd_wdat(0xbf);
      lcd_wdat(0xaa); //开
         lcd_wcmd(0x82);
      lcd_wdat(0x20); //空格
      lcd_wdat(0x20);
      lcd_wcmd(0x0c);
      // break;
   }