Delay with 50nS resolution...

[ErnieM]

Of course you can! (And you were worried, right?)

Courtesy Electronic Design mag:

[Design Briefs]
Measure Nanoseconds With A PIC Microcontroller

Jeffrey L. Rothman, Richard Michta
ED Online ID #5649
September 1, 2003

"Based on a PIC16F887 MCU, this circuit described measures pulse lengths from 2 to 950 ns with a 1-ns resolution."

http://www.elecdesign.com/Articles/A...5649/5649.html

[Melanie]

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....

[batee]

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?

[Melanie]

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?

[batee]

>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.

[Melanie]

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?

[batee]

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