Rising edge of square wave

Hi all,
I'm wondering how I would go about finding the rising edge of a square wave. I can trigger true when the rising edge of a sine wave occurs but it doesn't work for a square wave. 
Any ideas would be excellent!

winterfresh11 wrote:
So I actually discovered the answer to that question I had, but thank you for your response!
And what was your answer?  Please share since somebody else might run into the same issue and this thread might be able to help them.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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    Message Edited by sal22 on 08-16-2009 06:10 PM
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    Hello Cgifford,
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