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How to configure the SPEAr3xx general purpose timers (GPTs)

Posted: 10 May 2010     Print Version  Bookmark and Share

Keywords:SPEAr3xx GPT  general purpose timers  configure embedded MPU 

This application note provides information about how to configure the general purpose timers (GPTs) integrated in the SPEAr3xx embedded MPU family.

General purpose timers (GPTs) play an important role in any system as they provide a means of calculating time for controlling the execution of various operations. In case of an operating system, they are used for the system tick generation, usually every 10ms; in other applications they can be used to get a finer granularity for controlling the timing of events.

The purpose of this application note is to explain how to read the free running timer counter and configure the clock source of the various GPTs that are integrated in the SPEAr3xx architecture. It also describes and proposes a solution for the problem reported during the Puppy Linux project concerning the status register interrupt bit clear issue.

View the PDF document for more information.





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