public static byte[] rByte(String packagestr){
    	  byte[] tmp = new byte[packagestr.length()/2];
    	  for (int i=0;i<packagestr.length()/2;i++){
    		  tmp[i]=Byte.parseByte(packagestr.substring(i*2,i*2+2));
    		  //int j = (String.valueOf(("0x"+packagestr.substring(i*2,i*2+2)).;
    	  }
    	  return tmp;
      }