Wow,  Thank you for being so helpful.  I appreciate it.  
Again, thank you.

>From - wan



On Sat, 28 Aug 2004 00:46:58 -0400, Ken Pergola <no_spam@localnet.com> wrote:
> 
> Wan Zulhelmi Wan Ahmad Kamar wrote:
> 
> > Hi, I'm using a PIC18f252 with an ultrasonic transducer to receive
> > signal of 40kHz.  The thing is that I want to calculate the time from
> > the moment the first data arrive until the second data arrive.  How
> > can I do that?
> 
> Hi Wan,
> 
> Ok, I gave you a software delay approach because that is what you decided on
> in a previous post, but after the new information you posted, you don't need
> a software delay after all. You can use the CCP module:
> 
> Check out Microchip's application note AN597:
> 
> AN597
> Title: Implementing Ultrasonic Ranging
> 
> http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&
> appnote=en011066
> 
> Best regards,
> 
> Ken Pergola
> 
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