As has been mentioned, move the while(1) to above the while(hwi>0)

So;

while(1)

{
     while(hwi>0)
     {

       rest of code goes here
    }
}

You still have one problem to solve, that is once hwi reaches zero it will=
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stay at zero, if you want this loop to be continuous you'll need to reload=
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the variable.=20

Be careful of using the term constant for 'hwi', as misusing it could cause=
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you or others confusion at some other time.

Colin
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cdb, colin@btech-online.co.uk on 13/03/2011
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