Delay with 50nS resolution...


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  1. #1
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    But it's not a real-time measurement, but one that is delayed by the response of the ADC spinning up, and the PICs associated instruction processing. The equivallent of "Can I use an Abacus to calculate the National Debt?". Sure you can if you wait long enough for an answer....

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    I think it's a shame that Ernie contributed a useful answer, the first I've seen around these parts, and gets mocked for it? By an admin?

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    No, it was a valid answer. If you want to convert your Digital signal to Analogue, then wait, then have it converted back to Digital... then that's fine. But as at today, they've not made a PIC that can measure 50nS without a heap of external help.

    >the first I've seen around these parts

    Are you suggesting that this forum doesn't provide useful answers to it's members?

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    >the first I've seen around these parts

    Are you suggesting that this forum doesn't provide useful answers to it's members?[/QUOTE]


    Quite.

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    That's kinda insulting to everyone that's ever helped someone on this forum. From your posts I don't think you're qualified to make that kind of comment - even you got an answer by Ernie (thanks Ernie by the way, because batee obviously doesn't appreciate the answers folks receive here). Which begs another question, if this forum is so bad, then what are you doing here? After one and a half years since you became a member, how many times have you given up a jot of your time to help someone else?

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    While I have no Earthly idea how many posts I've made here, I can tell you exactly how many times I've given the unhelpful responses "RTM" or "Use Search Tool": 0 And for that I am most proud.

    The elitist attitude (reference your "not qualified" comment) and the unhelpful and in this case harmful and argumentative responses have indeed caused me to think twice before posting. Now it will be three times.

    Bryan

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    Hi, Bryan

    I could answer you your " problem" deals with pure assembler ... and this is not here the right place to post it.

    I will just tell you some ANs from µchip's site play with those time windows.

    My electronics knowledge ( LOL !!! ) tell me to use a HF oscillator, a gated counter ... and read the counter result.

    This sounds familiar to me as I read a while ago a datasheet from µchip where it was written " external gated TMR1 " ...

    as I am a kind guy ... I remember it was the 16F636 ... but may be this feature exists aboard other PICs.

    Counting my answers to your threads, I know one thing : a bit will be enough for that.

    Alain

    PS : "RTFM " means a little brain work from the author is Welcome. This Forum is not intended to give you " already kooked " solutions... But to try to learn you something ...

    The Chinese story of the fisherman ...
    or else:
    If the finger shows the moon, the idiot looks at the finger ...
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

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