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Interruption

 
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kamillas



Joined: 24 Oct 2011
Posts: 50

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Interruption
PostPosted: Sun Mar 04, 2012 4:10 pm     Reply with quote

I want the formula that calculates the timer 0 interrupt frequency 4MHZ, and I want eg the timer0 loaded with a value of 217, which we may well explain the formula for timer0.
dyeatman



Joined: 06 Sep 2003
Posts: 1910
Location: Norman, OK

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PostPosted: Sun Mar 04, 2012 4:20 pm     Reply with quote

What mode and what chip, it matters!
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Mike Walne



Joined: 19 Feb 2004
Posts: 1785
Location: Boston Spa UK

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Interrupts
PostPosted: Sun Mar 04, 2012 5:51 pm     Reply with quote

The data sheet for your chosen device has all the formulae you need in it's timer sections.

On second thoughts, you may need to explain what you are trying to achieve.

Mike
temtronic



Joined: 01 Jul 2010
Posts: 9081
Location: Greensville,Ontario

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PostPosted: Sun Mar 04, 2012 6:25 pm     Reply with quote

I don't think anyone reads any more....
must be a 'lost art'...

EVERY datasheet for EVERY PIC in the past 25+ years I've been using them has had FULL details on every aspect of it's operation....

Even the CCS C compiler manual ( mine's a sprialwound version,13 years old !) has details on the answer to the question.
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