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== Timers ==
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== Introduction ==
    
Timers can be used to control periodic tasks as well as implement sophisticated algorithms. The implementation of each type of timer is platform-dependent and has different properties that make them useful in specific situations; some timers have low granularity (seconds) and overflow once in tens of years, and others provide high granularity (microseconds), but overflow rapidly. There are 5 types of timers provided by Contiki:
 
Timers can be used to control periodic tasks as well as implement sophisticated algorithms. The implementation of each type of timer is platform-dependent and has different properties that make them useful in specific situations; some timers have low granularity (seconds) and overflow once in tens of years, and others provide high granularity (microseconds), but overflow rapidly. There are 5 types of timers provided by Contiki:
 
* rtimer
 
* rtimer
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The functions of all types of timers are located in the folder '''core/sys/{timer, stimer, ctimer, etimer, rtimer}.{c,h}'''. A complete documentation of Timers in Contiki can be found [https://github.com/contiki-os/contiki/wiki/Timers here].
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== Overview ==
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