明明显示占用了16K，可以打开发现只有一个1K大小的文件

应该是个mbed的跳转

<!-- mbed Microcontroller Website and Authentication Shortcut -->
<!-- Version: 0200 Build: Aug 27 2014 13:29:28 -->
<html>
<head>
<meta http-equiv="refresh" content="0; url=http://mbed.org/device/?code=071502005A1266076577F02F"/>
<title>mbed Website Shortcut</title>
</head>
<body></body>
</html>