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PIT Timers reliability : How can PIT timers shift over time?

Question asked by xplosiv on Jul 23, 2015
Latest reply on Jul 31, 2015 by Lukas Zadrapa

Hello,

 

I am using a MPC5604P and have implemented some real time sequencer managing 2 tasks using Periodic Interrupt Timer (PIT) interrupts.

 

How could each PIT timer deviate over time?

 

I am initializing PIT0 interrupt as a 200ms task and PIT1 as 1sec task without further reconfiguration once tasks are scheduled.

I'm checking against each task interrupt re-entrance.

 

I see the initial start delay between PIT interrupts as minor but wonder how this delay can vary over time.

 

Thank you.

 

Regards.

 

Message was edited by: xplosiv Readability edit.

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