Thread: Could someone look this over?
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Unread 08-02-2004, 12:22
Ryan M. Ryan M. is offline
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Re: Could someone look this over?
Quote:
Originally Posted by Joe Ross
Code:
        	if(currentPWM >= goalPWM + sensitivity)
        		return currentPWM - sensitivity;
        	if(currentPWM <= goalPWM - sensitivity)
        		return currentPWM + sensitivity;
Since everything is an unsigned char, then this code is a problem.
If goalPWM is 254 and sensitivity is 10 and CurrentPWM is 127, the result of (goalPWM + sensitivity) is 8 and so CurrentPWM is greater then 8 and you return 117 not 137 like you hope.
Yep, that will be the problem I'm sure. I'll just add a few extra tests for the extreme cases. (wanting to be at 0 and 254)

And the funny thing is, I had already paritially taken looping around into acount in the code.
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Last edited by Ryan M. : 08-02-2004 at 12:27.