different software times, impossible?


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  1. #1


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    Default Re: different software times, impossible?

    hello richard, first of all thank you. The y pulse can be always approximate to the unit, so it's never truncated. Only the pause change to reach the total time together at the x pulse. the x pulse is fixed 400*600=240000=240milliseconds, so the y pulses.

  2. #2


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    Default Re: different software times, impossible?

    i will make a test to see if the logical circuit connected to the pic accept "on" states duration other than "off" states, not symmetrical. Cause if the only important thing is the distance between the beginning of every "on" state maybe the software can be easier....

  3. #3
    Join Date
    Apr 2011
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    Default Re: different software times, impossible?

    It is, I understand, also possible to run more than one pic from a clock source. You mentioned connecting pics serially, but I do not see this as a solution; however, two (or more) sync'ed to the same clock...

  4. #4


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    Default Re: different software times, impossible?

    this is what the datasheet of the ic connected to the pic says:

    "An active low pulse on the input pin activate the logic. The activation occurs on the rising edge of the signal"

    clock input pin: low max 0,6v, high min 2v

    clock time: 0,5 us
    set up time: 1 us
    hold time: 4 us

  5. #5


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    Default Re: different software times, impossible?

    i tried with only 4us of "off" state and the input pin of the ic connected to the pic count the clock pulses very good, like the datasheet says

  6. #6


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    Default Re: different software times, impossible?

    it work with even 1us off state

  7. #7
    Join Date
    Nov 2005
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    Default Re: different software times, impossible?

    Are you looking to implement a frequency multiplier using PIC ?

  8. #8


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    Default Re: different software times, impossible?

    oh no, it's a stepper motors driver

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