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14-Apr-2008, 14:57
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Potentiometer offset?Using Motorola HC68...Designing a game of Pong using potentiometer to control the bat (paddle). The potentiometer's range is between 0-255 and the screens range that it needs to cover is between 0-50...
I was trying to multiply/divide using the following to get the correct reading - ADC_input * 50 / 256. I was trying to multiply using instruction MULU. I tried ADC_input * 2, just to see if it would work and it did up until a certain value and then it just kept randomly multiplying no matter which way I turned the potentiometer. I presume its something to do with mixing up bytes with longs. Any help or better methods in getting the correct input? |
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