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Re: Displaying time
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Re: Displaying time


  • Subject: Re: Displaying time
  • From: Negm-Awad Amin <email@hidden>
  • Date: Fri, 22 Aug 2008 16:05:27 +0200


Am Fr,22.08.2008 um 16:00 schrieb Graham Cox:


On 22 Aug 2008, at 11:54 pm, Negm-Awad Amin wrote:

This is not ugly, but the starting point for a software PLL.


Well, there's no "loop" to phase lock here.
This was the reason for me, to write: "starting point". Look to my newer answer.

The PLL analogy might hold up if you used your timer to measure the interval between changes of the clock, then use that to change the timer rate (feedback). Then you could ensure that the timer callback always occurred within a certain interval of the clock changing (analogous to the phase delay in a PLL). But, it's pretty complex for such a simple task, and not necessary. If the clock were running much, much faster and you wanted to keep up with sub-millisecond changes then yes, you might have a point...



cheers, Graham


Cheers,
Amin Negm-Awad
email@hidden




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References: 
 >Re: Displaying time (From: Gregory Weston <email@hidden>)
 >Re: Displaying time (From: Ron Fleckner <email@hidden>)
 >Re: Displaying time (From: Graham Cox <email@hidden>)
 >Re: Displaying time (From: Negm-Awad Amin <email@hidden>)
 >Re: Displaying time (From: Thomas Davie <email@hidden>)
 >Re: Displaying time (From: Negm-Awad Amin <email@hidden>)
 >Re: Displaying time (From: Thomas Davie <email@hidden>)
 >Re: Displaying time (From: Negm-Awad Amin <email@hidden>)
 >Re: Displaying time (From: Graham Cox <email@hidden>)

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