https://www.emblogic.com/blog/09/read-write-driver/ Embedded System and ARM Training Mon, 07 Oct 2013 04:00:03 +0000 hourly 1 http://wordpress.org/?v=3.9.1 https://www.emblogic.com/blog/09/read-write-driver/#comment-45 Fri, 24 Sep 2010 19:26:11 +0000 http://emblogic.org/blog/?p=129#comment-45 Even i can’t understand why the file is opened two times,when you can use same file descriptor for read(),write() operation…using syn between these two e.g. pipes…which is named pipes…

]]> https://www.emblogic.com/blog/09/read-write-driver/#comment-38 Fri, 24 Sep 2010 12:17:23 +0000 http://emblogic.org/blog/?p=129#comment-38 Once for writing: As the node is unidirectional… if the node is used for writing once then from then onwards it could be used for writing only. Now, if you want to read you need a new node in the read mode. so it has to be reopened in the read mode.

]]> https://www.emblogic.com/blog/09/read-write-driver/#comment-34 Fri, 24 Sep 2010 03:57:34 +0000 http://emblogic.org/blog/?p=129#comment-34 why u used open() twice..????????

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