DT interrupt/pulse generator

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  1. - 18th August 2008, 11:42 #1
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    Adrian
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    Default DT interrupt/pulse generator

    I have used Darrel's interrupts to generate a 1KHz pulse stream. As I'm using TOGGLE the interrupts needs to be at a 2KHz rate. Using PicMultiCalc with 7 instructions and 20MHz oscillator this gives Timer reload as 63043. Using this I get 959 Hz. I have to load 63150 to get about 1,000Hz. 107 ticks seems a long way out to me. Can someone please tell me why the great discrepancy and/or what I'm doing wrong. Many thanks
    Adrian
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