public static byte[] makeTime(){
		byte[] tBytes = new byte[8];
		SimpleDateFormat dateFormat = new SimpleDateFormat("yy,MM,dd,HH,mm,ss,SSSS");
		String strDate = dateFormat.format(new Date());
		//debug
		System.out.println("makeTime:" +strDate);
		String[] dates = strDate.split(",");
		int i = 0;
		int v;
		for(String d : dates){
			v = Integer.parseInt(d);
			if(v > 255){
				//先取后一个字节
				tBytes[i] = ((byte) ( v & 0xFF));
				//再取前一个字节
				v >>= 8;
				i++;
			}
			tBytes[i] = (byte) v;
			i++;
		}
		//debug
		//System.out.println("makeTime byte:" + dump(tBytes));
		return tBytes;
	}