EmbLogic » driver https://www.emblogic.com/blog Embedded System and ARM Training Tue, 03 Mar 2020 13:00:06 +0000 en-US hourly 1 http://wordpress.org/?v=3.9.1 What is Character Driver? https://www.emblogic.com/blog/02/what-is-character-driver/ https://www.emblogic.com/blog/02/what-is-character-driver/#comments Sun, 21 Feb 2016 12:10:16 +0000 http://www.emblogic.com/blog/?p=13296 Continue reading →]]> A character device driver is one that transfers data directly to and from a user process.

This is the most common type of device driver and there are plenty of simple examples in the source tree.

Character device drivers may transfer data between a user-level process and the device using any scheme other than the system buffer cache.

Character drivers control devices such as :-

 

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* network cards

* terminal devices

* printers

* specialized devices such as robots

* medical devices

* retail sales devices.

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