<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[yp201277的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/yp201277</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; yp201277]]></copyright><item><title><![CDATA[关于mini2440无法启动yaffs2的问题]]></title><link>https://blog.youkuaiyun.com/yp201277/article/details/50908083</link><guid>https://blog.youkuaiyun.com/yp201277/article/details/50908083</guid><author>yp201277</author><pubDate>Wed, 16 Mar 2016 20:21:00 +0800</pubDate><description><![CDATA[VFS: Unable to mount root fs via NFS, trying floppy.
s3c2440-sdi s3c2440-sdi: powered down.
VFS: Cannot open root device "mtdblock3" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available partitions：
Kernel panic - not sy]]></description><category></category></item><item><title><![CDATA[linux　USB驱动前言（主机与USB设备的点滴）]]></title><link>https://blog.youkuaiyun.com/yp201277/article/details/50905518</link><guid>https://blog.youkuaiyun.com/yp201277/article/details/50905518</guid><author>yp201277</author><pubDate>Wed, 16 Mar 2016 15:30:31 +0800</pubDate><description><![CDATA[第一，主机首先会发出一系列标准请求。
第二，在标准请求完成之后，会发出两个类请求：Bulk-Only Mass Storage Reset请求和Get Max LUN请求。这两个请求的格式可以在USB Mass Storage Class Bulk-Only Transport文档中查询。

Bulk-Only Mass Storage Reset没有数据阶段，只在状态阶段告诉主机设备的Reset过程完成与否。如果在状态阶段返回ACK，那么主机就认为设备已经Reset完毕并准备好接收CBW了。
Get Ma]]></description><category></category></item></channel></rss>