作串口控制，程序中怎样跳出while()循环下的switch，但又不中止程序

做串口控制，程序中怎样跳出while()循环下的switch，但又不中止程序？
从串口发送两个指令，让蜂鸣器以不同频率交替发声一定时间。下面是while循环：
while(1)                          //等待中断 
{
   switch (RxValue)        //RxValue为接收数据缓存
    {
     case 0x01:
                    PTCON &=~(1<<15);    
                    PTPER=17279;          
                    PDC1= 8639;            ////频率改为100HZ，占空比改为50%
                    PTCON |=1<<15;
                    delay_ms(5000);       //延时5000
  
                   PTCON &=~(1<<15);    
                   PTPER=3455;               
                   PDC1= 863;                //频率改为100HZ，占空比改为50%
                   PTCON |=1<<15;
                   delay_ms(5000);         //延时5000
                  break;
     case 0x02:
                    PTCON &=~(1<<15);    
                    PTPER=17279;          
                    PDC1= 8639;            //频率改为100HZ，占空比改为50%
                    PTCON |=1<<15;
                    delay_ms(10000);       //延时10000
  
                   PTCON &=~(1<<15);     
                   PTPER=3455;               
                   PDC1= 863;                ////频率改为100HZ，占空比改为50%